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  • Chemistry  (81)
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  • 1
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4774 | 1256 | 2011-09-29 15:55:47 | 4774 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Megacyclops viridis Jurine, noticed in Lago Maggiore in 1912 by De Marchi from the littoral vegetation of Pallanza, is a normal member of the littoral plankton of the lake. The subgenus Megacyclops, created by Kiefer in his revision of the viridis-vernalis group, contains european and american species some of which are today considered as varieties of the species viridis. This paper examines morphology and of the distribution of the Italian viridis in Lake Maggiore.
    Beschreibung: Translated from Italian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater lakes ; Freshwater crustaceans ; Animal morphology ; Life cycle ; Ecological distribution ; Italy ; Lake Maggiore ; Megacyclops viridis
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    Materialart: monograph
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  • 2
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4772 | 1256 | 2011-09-29 15:55:41 | 4772 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: This work is mainly intended as an addition to the studies of the populations dynamics of Cyclops scutifer, which is part of the ”Latn ja jaure project” (a study of the principles involved in the ecosystem of a small -initially fish free- mountain lake, before and after the introduction of fish). The field work consisted of sampling in Lake Erken in Roslagen in June, July and September, as well as in Latn ja jaure in the Abisko mountains in August and September of 1965. Additional sampling was done in Latn ja jaure for the study of the horizontal, vertical and temporal distribution of Cyclops scutifer, as well as the in situ development of the different stages. These samples have been analysed in such a way as to fit into the frame work of future studies on the population dynamics of Cyclops scutifer, The main aim of the present investigation is the determination of the dependence upon tempera- tare of the development of the embryo in the subarctic Cyclops scutifer as compared with the conditions found in the warm water species Mesocyclops leuckarti.
    Beschreibung: Translation from the original thesis published in 1966. Translated from Swedish into English
    Schlagwort(e): Biology ; Limnology ; Freshwater lakes ; Freshwater ecology ; Population dynamics ; Freshwater crustaceans ; Embryonic development ; Distribution ; Sweden
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    Materialart: monograph
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  • 3
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4765 | 1256 | 2011-09-29 15:55:10 | 4765 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Sensillae of the limbs of Cladocera are described with emphasis on Eurycercus lamellatus.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Limnology ; Freshwater crustaceans ; Animal morphology ; Sense organs
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    Materialart: monograph
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  • 4
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4762 | 1256 | 2011-09-29 15:55:00 | 4762 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The present work appertains to a series of investigations in the field of trophodynamics of water bodies conducted by the department of hydrobiology ”Mosrybvtuza” under the leadership of Prof. Director N.S. Gaevska. Usually with quantitative collections of benthos ostracoda are hardly taken account of. But with the employment of special methods it is possible to be convinced that they are encountered in massive numbers. The role of ostracods in the nutrition of fish is recognised as important by many authors. On the question of the feeding of ostracods, in the literature there are only the fragmentary indications about the occurrence in the gut of ostracods of algae (diatoms, desmids) and detritus. The study of the feeding of ostracods was conducted both by the method of dissecting the guts of ostracods taken from natural waters, and by the method of feeding ostracods under laboratory conditions with a variety of food objects. Moreover, with a view to revision of obtained quantitative data, for determination of food requirements of ostracods the respiration method was applied.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Ecology ; Limnology ; Freshwater crustaceans ; Trophodynamic cycle ; Feeding behaviour ; Feeding ; Food composition ; Experimental research ; Algae ; Oxygen consumption
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  • 5
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4764 | 1256 | 2011-09-29 15:55:08 | 4764 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The author summarises observations on the behaviour of Polyphemus pediculus and functions of its extremities in the process of feeding. The crustacean Polyphemus pediculus seizes its prey, kills it and pulverises its food with the help of its extremities. Therefore for a study of its feeding method was necessary not only to have been acquainted in detail with the structure of its extremities, but also to have observed their interaction for the accomplishment of the stated functions.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Animal morphology ; Animal physiology ; Feeding behaviour
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    Materialart: monograph
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  • 6
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4766 | 1256 | 2011-09-29 15:55:11 | 4766 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: For an explanation of the dynamics of numbers of chydorids, appearing a massive group in the littoral of fresh water bodies, the structure of the limbs of 29 species was studied.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Limnology ; Freshwater crustaceans ; Animal morphology ; Animal organs ; Chydoridae
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  • 7
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4768 | 1256 | 2011-09-29 15:55:26 | 4768 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Results of the investigation on certain problems of the nutrition of Leptodora and Bythotrephes in Rybinsk Reservoir (Russia) are reviewed. To clarify the composition of the food of Leptodora and Bythotrephes in this period, experiments were provided on their nutrition by cyclopids and rotifers.
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Animal organs ; Predation ; Feeding behaviour ; Freshwater ecology ; Russia
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    Materialart: monograph
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  • 8
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4763 | 1256 | 2011-09-29 15:55:07 | 4763 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: This brief chapter describes the occurrence Macrocyclops distinctus in the littoral zone of the Rybinsk Reservoir. Sampling was undertaken in summer and autumn 1961. In order to facilitate distinction of M. distinctus and Macrocyclops fuscus the author presents drawings of the whole species and certain characteristic parts of the body, and also gives a description of M. distinctus, comparing it with M. fuscus.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Ecology ; Limnology ; Freshwater crustaceans ; Animal morphology ; Freshwater ecology ; Taxonomy
    Repository-Name: AquaDocs
    Materialart: monograph
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  • 9
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4787 | 1256 | 2011-09-29 15:54:01 | 4787 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Many sides of the biology of Polyphemus pediculus are adequately studied at the present time. Most complicated is the question of its feeding. Dissection does not give an idea of the composition of the food, since Polyphemus strongly grinds its food with its mandibles. For clarification of the composition of the food of Polyphemus pediculus, the authors carried out in July and August 1962 a series of experiments with the application of radio-carbon methods in order to judge the degree of utilization of one or other foods by the quantity of C14, accumulated in the body of the crustacean after feeding. Particular attention in these experiments was given to the question of the possibility of the utilization by polyphemus of plant food - bacteria, algae and detritus.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Food composition ; Feeding ; Algae ; Carbon 14 ; Bacteria ; Detritus ; Polyphemus pediculus
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    Materialart: monograph
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  • 10
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4789 | 1256 | 2011-09-29 15:53:57 | 4789 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Until now observations on the temporal variation of size of freshwater copepods have not provided much information. Other observers only mention in passing this or that phenomenon from which it is possible to deduct termporal variations. In this study Cyclops strenuus s.l., a freshwater species of fairly wide distribution, is studied in two water bodies. The author studies the systematic, placing of inhabitants described as C. strenuus Fischer in both locations, their annual life cycle, and their annual size variations.
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater Lakes ; Freshwater crustaceans ; Temporal distribution ; Temporal variations ; Life cycle ; Cyclops strenuus
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    Materialart: monograph
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  • 11
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4788 | 1256 | 2011-09-29 15:53:59 | 4788 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Experimental research was conducted to study the development of eggs of Eudiaptomus gracilis Sars. The egg production was studied as well as the population dynamics. Factors like losses in the lake and through the effluent Rhine at Konstanz were considered.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater Lakes ; Eggs ; Embryonic development ; Experimental research ; Population dynamics ; Freshwater crustaceans ; Eudiaptomus gracilis ; Germany ; River Rhine
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  • 12
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4791 | 1256 | 2011-09-29 15:53:46 | 4791 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: This is a short excerpt of the original paper giving the key to the identification of the naupliar instars of the genus Cyclops.
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Limnology ; Freshwater crustaceans ; Identification keys ; Taxonomy ; Cyclops
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    Materialart: monograph
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  • 13
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4800 | 1256 | 2011-09-29 15:53:35 | 4800 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Cyclopids, exactly in the same way as daphnids, significant component in the nutrition of plankton-f and the young of the majority of fishes. It is established that the food spectrum of cyclopids is extremely broad: daphnids, planarians, Copepodite stages of copepods (cannibalism), rotifers, protists, bacteria, phytoplankton and so on. It is clear that the problem of studying these or other components of feeding in the general food spectrum can be definitely resolved only after obtaining exact quantitative data on the feeding of cyclopids. This article attempts to fill the gap in the study of the quantitative side of the feeding of cyclopias; in it is investigated the size of the 24-hour ration of cyclopids feeding on protists, the dependence of the ration on some factors of the external medium, and the difference of 24-hour consumption per unit weight of tody with two species of cyclopids (Cyclops strenuus and Cyclops viridis).
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Food composition ; Feeding behaviour ; Data acquisition ; Nutrition ; Experimental data ; Russia ; Cyclops strenuus ; Cyclops viridis
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    Materialart: monograph
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  • 14
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4802 | 1256 | 2011-09-29 15:52:17 | 4802 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: As is known, copepods play an important role in the nutrition of fish. Therefore with a view to facilitating research on the study of the quantitative side of feeding, there have recently appeared a considerable number of papers devoted to the development of methods for determining the wet. weight of these crustaceans. For the further facilitating of research in the nutrition of fish it would be of great interest to clarify the problem, is there not some kind of rule in the growth of the crustaceans during metamorphosis, and if there is such a rule is it not possible, to determine the length of the larvae at each stage, not by measuring them, but by using the formulae derived on the basis of these rules. This article examines the growth curves of different species of freshwater Copepoda, obtained on the basis of experimental observations in cultures or by way of measurement of mass material at all stages of development in samples from water-bodies. The authors study in particular the ratio of the mean diameter of the eggs to the mean length of the egg-bearing females.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Growth ; Growth curves ; Life cycle ; Larvae ; Formulae ; Copepoda
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    Materialart: monograph
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  • 15
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4799 | 1256 | 2011-09-29 15:53:30 | 4799 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The feeding of freshwater copepods, especially cyclopoida, has been poorly covered in research so far. The majority of existing special works on the feeding of cyclopoida illustrate this question only from the qualitative side. The food content of the nauplius of freshwater cyclops has not been studied at all, as also the feeding of adult entomostracans on bacteria. Moreover the question of the suitability of vegetable food for Cyclops is not clear enough. This article aims to elucidate as fully as possible the nutrition of Acanthocyclops viridis (Jur.) - a large cyclops, inhabiting the mass of demersal layers of the open parts of the Rybinsk reservoir and its foreshore. The present work is devoted only to the predatory feeding of A. viridis, and includes data from the content of the intestines of cyclops, collected in natural conditions, and also the results of experimental observations carried out in a laboratory during 1958.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Feeding ; Nutrition ; Experimental research ; Feeding behaviour ; Russia
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    Materialart: monograph
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  • 16
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4806 | 1256 | 2011-09-29 15:52:39 | 4806 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The significance of the photoperiod, a well-known phenomenon with arthropods, for the development of Cyclops vicinus were studied in laboratory conditions. There are indications that the point of the development process (development of the eggs and proportion of sexes) can be influenced through the photoperiod.
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Limnology ; Experimental data ; Freshwater crustaceans ; Light effects ; Photoperiodicity ; Developmental stages ; Insect eggs ; Life cycle ; Light ; Cyclops vicinus
    Repository-Name: AquaDocs
    Materialart: monograph
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  • 17
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4807 | 1256 | 2011-09-29 15:52:40 | 4807 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: This is a short excerpt of the original paper giving the key to the identification of the naupliar instars of the genus Cyclops.
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Limnology ; Freshwater crustaceans ; Identification keys ; Taxonomy ; Cyclops
    Repository-Name: AquaDocs
    Materialart: monograph
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  • 18
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4809 | 1256 | 2011-09-29 15:52:44 | 4809 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The vertical zoning of the planktonic Crustacea in a lake is the expression of a complex set of different factors. Besides the measurable, external influences such as light, temperature, acid and C02 stratification, a particularly large part is played by internal factors, which co-ordinate a specific reaction in each species depending on state of development, age and sex. Supporting this extensive, predictable, annual course of diurnal depths and the daily vertical migrations, whose extent is again dependent on external conditions, primarily of course on the amount of light. The individual factors mentioned, however, are here also of great significance. Within the scope of a long-term study of the planktonic Copepoda of Lake Constance, some day and night series were in 1963 also carried out in the Obersee, in order to obtain at least volumetric data on the extent of the daily migrations of these creatures.
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater lakes ; Freshwater crustaceans ; Vertical migrations ; Biological surveys ; Lake Constance
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    Materialart: monograph
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  • 19
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4811 | 1256 | 2011-09-29 15:52:15 | 4811 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Histochemical experiments are conducted in order to study the interrenal cells of European brook lamprey (Lampetra planeri).
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Limnology ; Freshwater lakes ; Zooplankton ; Vertical migrations ; Biological sampling ; Freshwater crustaceans ; Freshwater ecology ; Lake Constance
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    Materialart: monograph
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  • 20
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4813 | 1256 | 2011-09-29 15:51:28 | 4813 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Investigations on the control of the embryonic and post-embryonic development of arthropods have formed an intensively studied field of zoological research for a long time, Here in especially favourable cases the causal chain from the operation of external factors on the influence of physiological mechanisms, eg. of the hormone variety, is known right through to its primary influences. A comparative approach to the relevant questions was in the main only made in the case of the insects. For crustacea , investigations are available almost exclusively only for the malacostraca. This study examines the influence of the factors of temperature and photoperiod on the entire development of Cyclops vicinus. Tests were made on whether the light-darkness change serves as a regulator for a possible existing molting rhythm - a question which for the entire arthropods has been settled only very rarely. The basic material for the cultures that were examined originates from Lake Constance.
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Feeding experiments ; Crustacean culture ; Temperature effects ; Light effects ; Moulting ; Embryonic development ; Lake Constance ; Cyclops vicinus
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  • 21
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4815 | 1256 | 2011-09-29 15:52:03 | 4815 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: In a survey of histological preparations of several hundreds of Moina macrocopa Straus , one specimen was discovered, in the left ovary of which was found a parthenogenetic embryo. The short article includes an illustration of a transverse section of parthenogenetic female of Moina macrocopa.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Limnology ; Freshwater crustaceans ; Parthenogenesis ; Histology ; Embryos ; Moina macrocopa
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  • 22
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4818 | 1256 | 2011-09-29 15:51:20 | 4818 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Cases of mutual exclusion of two species of organisms in nature are known in large numbers. In the majority, they make different demands on the environ- ment which makes co-occurrence impossible. Less frequent are those cases in which a definite activity of one species prevents the occurrence of the other in the same region. An experiment was carried out n order to establish if Chydorus sphaericus can co-occur with water-snails. It emerged that a substance soluble in water which is given off by snails is responsible for the negative effect on small crustacea.
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Limnology ; Interspecific relationships ; Freshwater crustaceans ; Freshwater molluscs ; Experimental research ; Austria ; Lake Neusiedler
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  • 23
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4826 | 1256 | 2011-09-29 15:50:53 | 4826 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The behaviour in the feeding process and the functional morphology of Lathonura rectirostris O.F. Muller - one of the widely distributed species of macrothricids - is studied. The current work is an attempt at morpho-functional analysis of the apparatus of the trunk appendages of Lathonura rectirostris O.F. Muller. This highly specialized species, the method of feeding of which basically comes to the mechanical scraping-off and collection of epiphytic single-celled algae and particles deposited on the surface of aquatic plants.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Feeding ; Feeding behaviour ; Freshwater ecology ; Animal morphology ; Russia
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    Materialart: monograph
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  • 24
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4827 | 1256 | 2011-09-29 15:50:55 | 4827 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The results are described of eco-physiological investigations of the broad-pincered (Astacus astacus L.J.) crayfish and the long-pincered (Astacus astacus Esch.) crayfish, conducted in 1963—64 in the Institute of Zoology and Parasitology of the Academy of Science of the Lithuanian SSR, for the purpose of studying the interspecific relationship of these two species. In the course of the investigation were determined: the influence of the temperature of the environment on the consumption of oxygen by full grown individuals of both species and on the respiratory movements of the scaphognathites, the threshold temperatures and the saturation of the water by oxygen, the diel activity in the winter period.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Interspecific relationships ; Animal morphology ; Experimental research ; Temperature effects ; Ecophysiology ; Astacus astacus ; Astacus leptodactylus
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  • 25
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4828 | 1256 | 2011-09-29 15:50:56 | 4828 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The significance of detritus in the nutrition of aquatic animals, especially of the small representatives of the zooplankton, has been studied very slightly. Research so far has established that in M. rectirostris with feeding on protococcal and single-celled green algae and bacteria the beginning of formation of eggs takes place in 2 - 4 days. The young appear in 4 - 6 days. In this study M. rectirostris and C. quadrangula are fed on detritus of natural origin in laboratory conditions. In order to determine the assimilability and productive: effect of detritus, the author set up experiments, permitting to characterize the rate of growth, speed of maturing and fertility of M. rectirostris and C. quadrangula with feeding of them on detritus of different composition and age.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Experimental research ; Laboratory culture ; Feeding ; Feeding experiments ; Animal growth
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    Materialart: monograph
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  • 26
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4831 | 1256 | 2011-09-29 15:50:26 | 4831 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The passive spread of a high percentage of freshwater organisms is one of the most important requirements in short-lived and insular communities for species to attai n and survive - and consequently to balance the lack of a topographical continuity of most inland waters. Unfortunately hardly anything is known about the amounts of seed material typical for any lake into which it is carried. The causes of passive dissemination - wind, water and animals as well as man - are confirmed by many examples. It has been assumed now for at least a hundered years that , among animals, birds play a prominent role, although also disappointingly few facts are at hand. The passage and spread through birds' intestines has up to now been supported only by some limited data. This paper reports on experimental research where the eggs of Daphnia magna, Triops cancriformis, Artemia salina, Diaptomus spinosus and Cypris pubera were introduced by means of gelatine capsules into the oesophagus of a drake. The bird's excrements were inspected under a microscope for eggs and resting stages, and these were transferred into corresponding cultures.
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Aquatic birds ; Digestion ; Faecal pellets ; Dispersion ; Dispersants ; Experimental research ; Freshwater crustaceans
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    Materialart: monograph
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  • 27
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4832 | 1256 | 2011-09-29 15:50:52 | 4832 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: A great deal has been written on the part which birds play in the dispersal of freshwater fauna. This article summarises literature on the dispersal of aquatic animals by birds and aquatic insects.
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Aquatic birds ; Dispersion ; Dispersants ; Freshwater crustaceans ; Freshwater ecology ; Aquatic insects
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    Materialart: monograph
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  • 28
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4839 | 1256 | 2011-09-29 15:49:48 | 4839 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The purpose of this work is a contribution to the quantitative record of the use of iron by planktonic algae. Preliminary experiments with Chlorella to determine the rate of iron intake in the presence of inorganic sources of iron did not produce the desired result. The crucial point of this work is the investigation of the influence of various external factors on the stability of FeEDTA (FeEDTA = Ferric(III)-compound of ethylene-diamine tetra-acetic acid), since this compound appears to be particularly well-suited as a source of iron for planktonic algae (e.g. TAMIYA et al. 1953). Cultures of Chlorella fusca in a light thermostat were used in experimental research. Methods and results are discussed.
    Beschreibung: Translated from German into English
    Schlagwort(e): Chemistry ; Ecology ; Limnology ; Biometrics ; Biological sampling ; Geographical distribution ; Population density ; Population characteristics ; Population number ; Freshwater crustaceans ; Population dynamics
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    Materialart: monograph
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  • 29
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4833 | 1256 | 2011-09-29 15:50:18 | 4833 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The feeding methods of macrothricids was investigated in three species — Ophryoxus gracilis G.O. Sars, Ilyocryptus sordidus (Lievin) and Lathonura rectirostris O.F.Muller. The procuring of food in those species follows two methods: filtration of dispersed particles or scraping off and collecting food from the surface of the substrate. When collecting food by scraping off is the sole method of feeding (as in Lathonura rectirostris), movement along the substrate and feeding are combined so intimately that they appear as parts of one and the same mechanism.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Animal physiology ; Feeding ; Feeding behaviour ; Filter feeders
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    Materialart: monograph
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  • 30
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4835 | 1256 | 2011-09-29 15:50:15 | 4835 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: In species of Cladocera not forming ephippia, the latent eggs have a sheath formed by glands of the reproductive canals. Representatives of the families Daphniidae and Moinidae Goulden, 1968, in connection with the formation of their complex-structured ephippia, lost these glands. It was investigated whether there are such glands in species the latent eggs of which are enclosed in primitive ephippia. For this, with the help of histological methods, 55 females of Acroperus elongatus (Sars) (Chydoridea) and 88 females of Lathonura rectirostris (O. F. Muller), (Macrothricidae) were collected near Leningrad, were studied.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Limnology ; Sexual reproduction ; Females ; Histology ; Freshwater crustaceans ; Animal reproductive organs ; Lathonura
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    Materialart: monograph
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  • 31
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4842 | 1256 | 2011-09-29 15:50:07 | 4842 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: In the waterbodies of central Russia, the Urals and western Siberia four species of Crustacea, related to the genus Mesocyclops, are widely distributed: M. (s.str.) leuckarti (Claus), M. (Thermocyclops) oithonoides Sars, [M.](Th.) crassus (Fisch.) and M. (Th.) dybowskii (Lande). Numbers and biomass of Mesocyclops oithonoides in the pelagic water of various water-bodies of the Urals are presented and observations on the above mentioned species are discussed.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Biomass ; Freshwater crustaceans ; Population number ; Freshwater ecology ; Russia ; Urals
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    Materialart: monograph
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  • 32
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4843 | 1256 | 2011-09-29 15:49:28 | 4843 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The reaction of Mn(II) with water-dissolved oxygen, to a higher manganese hydroxide in an alkaline medium, as with the longstanding classic Winkler method, is the first step in the method described here. The assumption for faultless results by the conventional and modified Winkler method is clean water, which contains no organic substances by Mn(III) or Mn(IV). In many cases, however, eg. in river and lake-water tests, it can be seen with the naked eye that after some time the originally brown-coloured precipitate of manganese hydroxide becomes more and more colourless. Oxygen content was analysed in the water samples and evaluated by raising the amount of the leuko-base and giving the corresponding dilution of the colouring matter solution formed still higher oxygen contents can be measured.
    Beschreibung: Translated from German into English
    Schlagwort(e): Chemistry ; Ecology ; Limnology ; Methodology ; Experimental research ; Dissolved oxygen ; Analytical techniques ; Water analysis
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    Materialart: monograph
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  • 33
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4841 | 1256 | 2011-09-29 15:49:51 | 4841 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: This translation presents identification keys to the subfamilies, genera, species and subspecies of Chydoridae of the USSR. Chydoridae are a family in the order of Cladocera.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Limnology ; Identification keys ; Freshwater crustaceans ; Chydoridae
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    Materialart: monograph
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  • 34
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4838 | 1256 | 2011-09-29 15:49:46 | 4838 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Eudiaptomus vulgaris Schmeil is the most abundant copepod in Lake Maggiore and forms also, in respect to other entomostraca, the most important element, through its average biomass and because it is fairly numerous throughout the year. Plankton samples collected in a systematic and quantitative way, gave the opportunity to study some aspects of the dynamics of the population of this copepod, in safety in view of the uncertainty which in this kind of study can ensue when samples are taken only at a single station - in consequence of the changes in size of population between different water masses. The results of the biometrical observations are of the population of Eudiaptomus vulgaris is presented.
    Beschreibung: Translated from Italian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Biometrics ; Biological sampling ; Geographical distribution ; Population density ; Population characteristics ; Population number ; Freshwater crustaceans ; Population dynamics
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    Materialart: monograph
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  • 35
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4846 | 1256 | 2011-09-29 15:49:35 | 4846 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Members of the family Gammaridae are very closely interrelated. There arises the question as to how far they also differ amongst themselves through physiological characteristics. Comparative respiratory and physiological experiments were made on the five euryhaline species Gammarus locusta, G. oceanicus, G. salinus, G. zaddachi and G. duebeni. The respiratory measurements carried out within the framework of this experiment were occupied with the relationships between oxygen consumption and body size depending on salinity. They also had the object of determing the variations in metabolic intensity after an abrupt change in the salt content of the external medium, and to establish the period of time for the process of adaptation. As the experiments were carried out polarographically in a testing plant with continuous flow-through, and the method which was applied permitted continuous recording over prolonged intervals, there could also be carried out comparisons between metabolism at rest and under activity, and the alterations of oxygen consumption during the process of moulting could be measured.
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Experimental research ; Respiration ; Respiratory organs ; Salinity effects ; Salinity tolerance ; Metabolism
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    Materialart: monograph
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  • 36
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4853 | 1256 | 2011-09-29 15:48:56 | 4853 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Observations of individual weight, duration of development and production of different stages of Tropodiaptomus incognitus are presented. The study is based on data gathered from Lake Chad in 1968.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Freshwater lakes ; Distribution ; Samplers ; Biological sampling ; Water reservoirs
    Repository-Name: AquaDocs
    Materialart: monograph
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  • 37
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4852 | 1256 | 2011-09-29 15:48:54 | 4852 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Observations of individual weight, duration of development and production of different stages of Tropodiaptomus incognitus are presented. The study is based on data gathered from Lake Chad in 1968.
    Beschreibung: Translated from French into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Freshwater lakes ; Developmental stages ; Biomass ; Lake Chad
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    Materialart: monograph
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  • 38
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4848 | 1256 | 2011-09-29 15:49:18 | 4848 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: When dissolved in water, compounds of nitrogen and phosphorus ought to contain the basic assimilated food requirements for autotrophic plants and therefore autotrophic algae. This article summarises the occurrence of nitrogen in water, how species of algae utilize nitrogen and phosphorus forms for growth and the capacities of algae to adapt to environments of different nutrient wealth. This topic has unquestionable importance not only for the purpose of survival of a species but also in deciding indirectly about the stability of ecosystems.
    Beschreibung: Translated from Polish into English
    Schlagwort(e): Biology ; Chemistry ; Limnology ; Algae ; Nitrogen fixation ; Nitrogen ; Phosphorus ; Nutritional requirements ; Bacteria ; Organic compounds
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    Materialart: monograph
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  • 39
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4849 | 1256 | 2011-09-29 15:49:14 | 4849 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The seminal bag, or seminal receptacle, forms a characteristic organ of cyclopids, serving for retention of the sperms discharged from the spermatophores. The structure of the seminal receptacle, more precisely its form, is fairly widely used in diagnosis and undoubtedly can be more widely applied in the systematics of the group. Within the limits of the family Cyclopidae it is possible to distinguish crustaceans with three basic types of seminal bag. The differences consist of the position which this organ occupies in the genital segment. of one species, we carried out a series of observations on its formation in ontogenesis and during the life of the adult stage. As material for observation the study used laboratory cultures of three species; Acanthocyclops americanus (Marsh) from the plankton of the Moscow River, Cyclops vicinus Uljan and Mesocyclops leuckarti Glaus from the plankton of the channel section of the upper part of the Gorkovsk reservoir. The author concluded that the irreversibility of the changes in the seminal receptacle presents the possibility of utilising this structure as one of the indicators of the growth of the individual.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Limnology ; Freshwater crustaceans ; Animal reproductive organs ; Taxonomy ; Laboratory culture ; Russia
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    Materialart: monograph
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  • 40
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4854 | 1256 | 2011-09-29 15:48:58 | 4854 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: In studying sexual attraction in gammarids of the group pulex, it has seemed necessary to dissociate the processes of moulting and ovogenesis in order to recognize their respective effects on this phenomenon. For this purpose a synthetic hormone, ecdysterone, was utilized. In the first instance the author followed the action of the hormone on isolated females in vitellogenesis. It was proved that the behaviour of Gammarus pulex and Gammarus fossarum vis-a-vis the ecdysterone used proves to be very close to that of isopods that was observed in Orchestia gammarellus in earlier research. Although they were in vitellogenesis, the females saw their intermoult cycle shortened.
    Beschreibung: Translated from French into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Experimental research ; Oogenesis ; Moulting ; Ecdysons ; Vitellogenesis
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    Materialart: monograph
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  • 41
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4862 | 1256 | 2011-09-29 15:47:51 | 4862 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: In fresh waters the planktonic Crustacea are represented mainly by the two large groups, the Copepoda and the Cladocera. This study focuses on Holopedium gibberum and examines if the plankton is an indicator of soft-water lakes. H. gibberum is found throughout the northern half of the globe but its distribution is scattered and irregular. The study is based on a literature review and samples taken from water bodies in Norway.
    Beschreibung: Translated from Norwegian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Zooplankton ; Calcium carbonates ; Indicator species ; Norway
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    Materialart: monograph
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  • 42
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4856 | 1256 | 2011-09-29 15:48:26 | 4856 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: Pseudomonas aeruginosa has for some time been known as a denitrifier. Pseudomonas aeruginosa was chosen for further studies, because P. aeruginosa occurs abundantly in Plusssee and moreover there are contradictory assertions on the gas products of denitrification by this bacteria. In experimental research the pattern of growth and gas production of Pseudomonas aeruginosa on nutrient broth was studied.
    Beschreibung: Translated from German into English
    Schlagwort(e): Chemistry ; Ecology ; Limnology ; Experimental research ; Bacteria ; Freshwater lakes ; Growth ; Microbiological culture ; Plusssee
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    Materialart: monograph
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  • 43
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4857 | 1256 | 2011-09-29 15:48:28 | 4857 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: There is no doubt that determination of the biomass of zooplankton (primarily of crustaceans) will be taken into consideration in practice and limnological works, especially after the recent publication of fairly comprehensive tables of weights of a whole range of species of freshwater copepods and cladocerans. The usefulness of applying formulae of determining the biomass of marine crustaceans for freshwater copepods is discussed.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Chemistry ; Ecology ; Limnology ; Freshwater crustaceans ; Zooplankton ; Biomass ; Formulae
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    Materialart: monograph
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  • 44
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4870 | 1256 | 2011-09-29 15:47:52 | 4870 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The amphipods are major food items for many commercial fishes, and they are used as protein food for agricultural animals. In the present paper are presented the results of four-year observations on the feeding of Gammarus balcanicus in nature and in an aquarium. Among the studied aspects were the dependence of daily food ration on sex and physiological state (with and without eggs) and feeding on different kinds of plant food. The study concludes that Gammarus balcanicus willingly feed on soft half-decayed plant residues; into their ration also enters food of animal origin. In contrast to other amphipods, G. balcanicus eats representatives of its own species very rarely, and only dead or immobile ones.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Feeding ; Feeding behaviour ; Feeding experiments ; Food composition ; Experimental research ; Gammarus balcanicus
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    Materialart: monograph
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  • 45
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4877 | 1256 | 2011-09-29 15:47:02 | 4877 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: The determination of bi- and trivalent iron in proximity, in mineral waters has gained in significance, on biological and technical grounds. This short paper describes the procedure of the determination of bivalent iron and total iron in a water sample.
    Beschreibung: Translated from German into English
    Schlagwort(e): Chemistry ; Limnology ; Iron ; Acids ; Analytical techniques ; Minerals ; Water analysis
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    Materialart: monograph
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  • 46
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4878 | 1256 | 2011-09-29 15:47:04 | 4878 | Freshwater Biological Association
    Publikationsdatum: 2021-07-06
    Beschreibung: A small stream in the French Alps was sampled at regular intervals to determine the size distribution of animals for growth studies. The temperature was also measured. The results obtained for Gammarus fossarum were compared with laboratory cultures and the laboratory animals were physiologically and chemically analysed. Chemical analysis was also carried out on field animals.
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Limnology ; Freshwater crustaceans ; Laboratory culture ; Experimental research ; Rivers ; Temperature effects ; Feeding experiments ; Size distribution ; Gammarus fossarum
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    Materialart: monograph
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  • 47
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4886 | 1256 | 2011-09-29 15:46:47 | 4886 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: Observations and laboratory experiments are summarised that examine the widely discussed issue of what Gammarus pulex feeds on. On the basis of the observations of the authors and data from the literature it can be noted that G. pulex belongs to the omnivorous organisms, but, depending on the conditions of subsistence, in its rations either plant or animal food can predominate.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Food composition ; Feeding ; Omnivores ; Experimental research ; Gammarus pulex
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    Materialart: monograph
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  • 48
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    Unbekannt
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4882 | 1256 | 2011-09-29 15:46:20 | 4882 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: The Goggausee, a small, shallow, meromictic lake(700m long, 150m wide, max. depth=12m, mean depth=6m), was the site of a week long study (19-26 May 1974) of the limnology department of the University of Vienna. The study comprised pollen analysis and palaeolimnological studies on the one hand, as well as a stock- taking of physiochemical factors, primary production, bacteria, zooplankton, zoo benthos and fish on the other. This paper studies the zooplankton of the lake. The Goggausee is a meromictic lake, with its anoxic deep water, that restricts the vertical distribution of most zooplankton. The aim of the study was to pursue the vertical distribution of the rotifers and Crustacea. Density of individuals, biomass, percentages of zooplankton together and crustaceans and rotifers as groups. Special consideration is given to the the Dipteran Chaoborus flavicans.
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Zooplankton ; Environmental surveys ; Freshwater crustaceans ; Biomass ; Freshwater lakes ; Population density ; Austria ; Chaoborus flavicans
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    Materialart: monograph
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  • 49
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4889 | 1256 | 2011-09-29 15:46:17 | 4889 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: Identification keys to families of Cladocera and to subfamilies, genera, species and subspecies of Macrothricidae and Moinidae are given. This translation does not include ecological notes or illustrations.
    Beschreibung: Translated from Polish into English
    Schlagwort(e): Biology ; Limnology ; Identification keys ; Taxonomy ; Freshwater crustaceans
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    Materialart: monograph
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  • 50
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4894 | 1256 | 2011-09-29 15:45:42 | 4894 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: This brief paper describes the significance of seasonal variation in clutch-size of the copepod Arctodiaptomus bacillifer in alpine lakes of high altitudes (Val Bognanco). Seasonal dynamics of the zooplankton of these lakes was studied during summer and autumn of 1968 and 1969and results are summarised.
    Beschreibung: Translated from Italian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Zooplankton ; Freshwater crustaceans ; Freshwater lakes ; Glacial lakes ; Italy
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    Materialart: monograph
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  • 51
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4907 | 1256 | 2011-09-29 15:44:45 | 4907 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: In freshwater environments of modest size and without notable ecological structure, there is usually present only one diaptomid species. When two or more diaptomid species are present in the same habitat, generally their body dimensions are distinctly different. There are only four examples of co-existence of Arctodiaptomus bacillifer (Koelb.) and Acanthodiaptomus denticornis (Wierz.) situated at higher altitudes alpine lakes. The article discusses the results of sampling in the summer of 1953 and the problem of the co-existence of Arctodiaptomus bacillifer, Acanthodiaptomus denticornis and Heterocope saliens.
    Beschreibung: Translated from Italian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Zooplankton ; Freshwater lakes ; Interspecific relationships ; Freshwater crustaceans ; Population characteristics ; Arctodiaptomus bacillifer ; Acanthodiaptomus denticornis ; Heterocope saliens
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  • 52
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4902 | 1256 | 2011-09-29 15:44:10 | 4902 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: Zooplankton was studied in four alpine lakes in Switzerland, France and Italy. The presence the presence of the invertebrate predator Heterocope in three lakes was stated. It is then discussed why in three of these four lakes, the copepod Arctodiaptomus denticornis is present in the absence of Arctodiaptomus bacillifer, and vice versa respectively in the second and first parts of the lacustrine summer.
    Beschreibung: Translated from Italian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Zooplankton ; Freshwater crustaceans ; Freshwater lakes ; Predators ; Abundance ; Arctodiaptomus bacillifer ; Acanthodiaptomus denticornis
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    Materialart: monograph
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  • 53
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4906 | 1256 | 2011-09-29 15:44:42 | 4906 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: In recent times, some specialists have begun to study the subject of food selection of fish in an organized way, thus highlighting its importance. In the present work, the author intends to evaluate the impact of predation on the eupelagic zooplanktonic biocenosis of Lake Maggiore, producing, in this way, as far as possible, a basis for a better understanding of the population dynamics of the species of zooplankton directly involved. Another aspect which has been studied is that related to the mechanism of selective capture set in action by the predator. To this end the study tries to bear in mind that the subject should be interpreted as a function of numerous factors acting contemporaneously, that is as the interaction of characters peculiar to the predator and to the prey. The species studied, locally called ”bondella”, belongs to the family Salmonidae, subfamily Coregoninae and was introduced into Lake Maggiore in 1950.
    Beschreibung: Translated from Italian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater fish ; Predator prey interactions ; Zooplankton ; Feeding ; Freshwater crustaceans ; Lake Maggiore
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    Materialart: monograph
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  • 54
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4909 | 1256 | 2011-09-29 15:44:49 | 4909 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: Taxonomic observations on the larval forms of Cyclops leuckarti are being discussed and compared with Cyclops oithonoides var. hyalina. Observations include Nauplius and Metanauplius stages. The author concludes that specific differences are recognisable even in the nauplius stages.
    Beschreibung: Translated from Italian into English
    Schlagwort(e): Biology ; Limnology ; Freshwater crustaceans ; Life cycle ; Larval development ; Larvae ; Taxonomy ; Animal morphology ; Cyclops leuckarti ; Cyclops oithonoides
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    Materialart: monograph
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  • 55
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4910 | 1256 | 2011-03-10 09:18:30 | 4910 | Freshwater Biological Association
    Publikationsdatum: 2021-06-24
    Beschreibung: Dormancy has been observed in several species of Cyclops. Animals in dormancy are characterised by almost complete inactivity of the main appendages and sluggish intestinal peristalsis. In Cyclops vicinus dormancy can take place in copepod stages III (19%), IV (78%) and V (3%) but one and the same animal only in one developmental stage. The author gives his own results between frequency of dormancy and photoperiod (20 C, 1000 lux). He concludes that dormancy in C. vicinus can be influenced by day length and can be ended prematurely by short day length.
    Beschreibung: Translated from German into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Life cycle ; Dormancy ; Experimental research
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    Materialart: monograph
    Format: application/pdf
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  • 56
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    Unbekannt
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4911 | 1256 | 2011-09-29 15:45:08 | 4911 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: Dormancy has been observed in several species of Cyclops. Animals in dormancy are characterised by almost complete inactivity of the main appendages and sluggish intestinal peristalsis. In Cyclops vicinus dormancy can take place in copepod stages III (19%), IV (78%) and V (3%) but one and the same animal only in one developmental stage. The author gives his own results between frequency of dormancy and photoperiod (20 C, 1000 lux). He concludes that dormancy in C. vicinus can be influenced by day length and can be ended prematurely by short day length.
    Beschreibung: Translated from Italian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Zooplankton ; Freshwater crustaceans ; Freshwater lakes ; Biological surveys ; Lake dynamics ; Mixodiaptomus laciniatus ; Cyclops abyssorum ; Lake Maggiore
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    Materialart: monograph
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  • 57
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4914 | 1256 | 2011-09-29 15:45:22 | 4914 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: Experimental studies were carried out on the transformation of matter and energy during embryonic development of the isopod Crustacea Asellus aquaticus L. under two constant temperatures. Material for the experiments was collected in the quarry lakes of the Kurasovshchin-zone (city-Minsk) at 9°C in April and at 18°C in June, 1977. The rate of consumption of oxygen per specimen by eggs and embryos of Asellus aquaticus was observed and dynamics of the basic biological characteristics during embryonic development studied.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Embryonic development ; Temperature effects ; Oxygen consumption ; Asellus aquaticus
    Repository-Name: AquaDocs
    Materialart: monograph
    Format: application/pdf
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  • 58
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4918 | 1256 | 2011-09-29 15:45:41 | 4918 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: The determination of relative connections between families and genera of Cladocera, necessary for the construction of their natural systems, must be based on various criteria, among them on the structure of the ephippia. Of particular interest is the study of the process of formation and structure of the ephippium in Macrothricidae, different representatives of which differ significantly among themselves according to this criterion. In this article are presented the results of an investigation of the features of formation of the ephippium in seven species of Macrothricidae and in the moinid Moina weismanni Ishikawa (Moinidae).
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Limnology ; Freshwater crustaceans ; Insect eggs ; Histology ; Macrothricidae ; Moina weismanni
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    Materialart: monograph
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  • 59
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4913 | 1256 | 2011-09-29 15:45:19 | 4913 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: It is known that an adequately large amount of work has been devoted to investigations on the influence of temperature on the growth period of aquatic invertebrates. However, the action of the given factors on the basic biological characteristics of embryonic growth in crustaceans is virtually unknown. An experimental study of the effectiveness of the transformation of matter and energy during the period of embryogenesis in the isopod Asellus aquaticus L. under different constant temperatures was carried out. Specimens were collected in the quarry lakes of the Kurasovshchin zone (city-Minsk). The authors developed a quantitative analysis of the basic energetic properties of animals during one of the physiological stages at different constant temperatures, which allows one to determine the temperature range in which the expenditure of energy, at a given instance during embryonic growth, is minimised. For A. aquaticus this range is represented by the limits 10-22°C, during which the least expenditure of energy is observed between 14.5 and 18.8°C.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Embryonic development ; Embryos ; Temperature effects ; Asellus aquaticus
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    Materialart: monograph
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  • 60
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4964 | 1256 | 2011-09-29 15:39:04 | 4964 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: The nitrification in the ocean is influenced by several environmental factors and the importance of these is more or less known. There are very likely many more to be discovered in the study of the interaction of nitrification bacteria and other micro-organisms in the ocean. Some of the factors to be considered will briefly be dealt with in this paper. Then the authors give the results of an incubation experiment in the Baltic Sea and from a detailed study in Gullmarn.
    Beschreibung: Translated from Swedish into English
    Schlagwort(e): Chemistry ; Ecology ; Oceanography ; Marine ecology ; Nitrification ; Experimental research ; Sediment analysis ; Bacteria ; Carbon fixation ; Nitrosococcus oceanus ; Nitrococcus mobilis
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    Materialart: monograph
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  • 61
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4967 | 1256 | 2011-09-29 15:36:52 | 4967 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: Utilization of the heavy isotope of nitrogen as a tracer has found numerous applications in soil biology. It allows better definition of different stages of the nitrogen cycle, in particular the immobilization-mineralization cycle. In this work, the authors report the results of calculations of natural isotope ratios of nitrogen in samples of water, soil and vegetation prevailing in Dombes and discuss the possibilities of errors and coefficients of fractionation.
    Beschreibung: Translated from French into English
    Schlagwort(e): Chemistry ; Ecology ; Limnology ; Nitrogen isotopes ; Soils ; Tracers ; Bacteria ; Nitrogen compounds ; France ; Dombes
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    Materialart: monograph
    Format: application/pdf
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  • 62
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4963 | 1256 | 2011-09-29 15:39:01 | 4963 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: This short translation summarises experiments on the production of a highly dispersible precipitate of calcium carbonate. The translation covers the 'Experimental section' (of the original larger paper) only.
    Beschreibung: Translated from Polish into English
    Schlagwort(e): Chemistry ; Limnology ; Experimental research ; Calcium carbonates ; Magnetic fields ; Ultrasonic devices
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    Materialart: monograph
    Format: application/pdf
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  • 63
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4975 | 1256 | 2011-09-29 15:37:31 | 4975 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: Despite the fact that it is a long time sinc e the methods of collection and quantitative estimatio n of protozoa were worked out data on the abundance of these animals in freshwaters are not very numerous. Nevertheless, Infusoria and Rhizopoda at high densities are widespread in the water and sediments of lakes and reservoirs. In order to find ou t the importance of infusoria as a food source for cyclopoids we carried out experimental investigations using C14. For this three species of cyclopoids, widely distributed in open regions of Rybinsk reservoir were selected: Cyclops vicinus, Mesocyclops oithonoides and Kesocyclops leuckarti. The data presented give evidence that the species investigated are able as predators to consume infusorian plankton arid bacteria in the form of flocs or small clumps of detritus.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Ecology ; Limnology ; Freshwater lakes ; Freshwater crustaceans ; Feeding experiments ; Bacteria ; Feeding ; Russia ; Cyclops vicinus ; Mesocyclops oithonoides ; Kesocyclops leuckarti
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    Materialart: monograph
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  • 64
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4988 | 1256 | 2011-09-29 15:36:31 | 4988 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: This abbreviated translation summarises the chemical composition of Iraq water resources. Among the described water bodies are the River Euphrates, Shatt al Arab River and a number of standing waters.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Chemistry ; Ecology ; Limnology ; Inland water environment ; Inland waters ; Water analysis ; Iraq
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    Materialart: monograph
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  • 65
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4980 | 1256 | 2011-09-29 15:38:06 | 4980 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: This partial translation of the original paper provides the summary of this study of the mechanism of mass transfer in the formation of hydrothermal deposits of sulphides. For determining the solubility of sulphides of iron, the radioactive isotope Fe59 was used. The solubility of two sulphides was determined.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Chemistry ; Ecology ; Limnology ; Sulphide deposits ; Sulphides ; Hydrothermal deposits ; Iron isotopes ; Solubility
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    Materialart: monograph
    Format: application/pdf
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  • 66
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4985 | 1256 | 2011-09-29 15:38:34 | 4985 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: Experiments were carried out by the method of direct effect of the tested substance on increase of biomass (1,2). Daphnia magna was cultured under laboratory conditions.The author concludes that concentrations of aniline from 5000 to 0.1 mg/1 appear acutely lethal. The disturbance of feeding, reproduction, the disorganization of the nervous system, speak of the toxicity of the substance.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Limnology ; Organic compounds ; Toxicity ; Toxicity tests ; Zooplankton ; Freshwater crustaceans ; Daphnia magna
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    Materialart: monograph
    Format: application/pdf
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  • 67
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4984 | 1256 | 2011-09-29 15:38:32 | 4984 | Freshwater Biological Association
    Publikationsdatum: 2021-07-07
    Beschreibung: The amphipod Gammarus lacustris, a regular representative of lacustrine communities, often plays a significant role in the transformation of matter and energy. The object of the present work was to clarify the quantitative side of the feeding of the amphipod under different conditions of habitation. Experimental works on determination of the rate of consumption of food and its dependence on body-weight were carried out in the summer periods 1975-1978 on three water-bodies of the Krasnoyarsk region, of different conditions of habitation for the amphipods.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Aquaculture ; Biology ; Limnology ; Freshwater crustaceans ; Feeding ; Feeding experiments ; Body weight ; Zooplankton ; Russia ; Krasnoyarsk
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    Materialart: monograph
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  • 68
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5023 | 1256 | 2011-09-29 15:32:39 | 5023 | Freshwater Biological Association
    Publikationsdatum: 2021-07-08
    Beschreibung: This short paper summarises findings of experiments that were carried out using copepod eggs taken from guts of Coregonus which breeds in various Ural lakes. The study showed that copepod eggs can pass through the gut of Coregonus unharmed.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater fish ; Freshwater crustaceans ; Dispersants ; Dispersion ; Ladoga Lake ; Coregonus ; Cyclops vindis
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    Materialart: monograph
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  • 69
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5024 | 1256 | 2011-09-29 15:32:41 | 5024 | Freshwater Biological Association
    Publikationsdatum: 2021-07-08
    Beschreibung: The consumption of oxygen in Asellus aquaticus was measured to find if there existed a periodicity in the consumption of oxygen and how this showed itself during the course of the day, year and in various experimental conditions. From the figures obtained comparative values were calculated and from these curves were plotted of the changes in the consumption of oxygen during the day and year.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Limnology ; Freshwater crustaceans ; Periodicity ; Seasonal variations ; Oxygen consumption ; Asellus aquaticus
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    Materialart: monograph
    Format: application/pdf
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  • 70
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5030 | 1256 | 2011-09-29 15:31:52 | 5030 | Freshwater Biological Association
    Publikationsdatum: 2021-07-08
    Beschreibung: The winter eggs of Daphnia pulex, after passing safely through the winter , develop and hatch in the spring, multiplying by themselves, while some males emerging among them with the changes in environment produce fertile eggs, which are universally known as winter eggs . This study researches the factors governing the development of winter eggs through experiments.
    Beschreibung: Translated from Japanese into English
    Schlagwort(e): Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Resting stages ; Temperature effects ; Daphnia pulex
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    Materialart: monograph
    Format: application/pdf
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  • 71
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    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5054 | 1256 | 2011-09-29 15:29:08 | 5054 | Freshwater Biological Association
    Publikationsdatum: 2021-07-08
    Beschreibung: Observations are reported on the content of organic matter in the Moscow region in 1941. Some data is given on alkalinity, oxygen content and colourisation of the rivers.
    Beschreibung: Translated from Russian into English
    Schlagwort(e): Biology ; Chemistry ; Limnology ; Rivers ; Organic matter ; Alkalinity ; Dissolved oxygen ; Colour
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    Materialart: monograph
    Format: application/pdf
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  • 72
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    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5238 | 1256 | 2011-09-29 15:13:42 | 5238 | Freshwater Biological Association
    Publikationsdatum: 2021-07-09
    Beschreibung: This report presents five batches of data which have been despatched to the Joint Research Centre, Ispra. The data as been allocated to various ECDIN (Environmental Chemicals Data and Information Network) files. The data comprises environmental chemicals in the freshwater environment, taking in paricular consideration: aquatic toxicity, bioaccumulation, metabolism and elimination biodegradation.
    Schlagwort(e): Chemistry ; Ecology ; Limnology ; Data ; Data processing ; Data collections ; Chemical compounds ; Toxicity ; Bioaccumulation ; Biodegradation ; Metabolism
    Repository-Name: AquaDocs
    Materialart: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 8
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  • 73
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    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5293 | 1256 | 2011-09-29 15:08:09 | 5293 | Freshwater Biological Association
    Publikationsdatum: 2021-07-09
    Beschreibung: Esthwaite Water is the most productive or eutrophic lake in the English Lake District. Since 1945 its water quality has been determined from weekly or biweekly measurements of temperature, oxygen, plant nutrients and phytoplankton abundance. The lake receives phosphorus from its largely lowland-pasture catchment, sewage effluent from the villages of Hawkshead and Near Sawrey, and from a cage-culture fish farm. From 1986 phosphorus has been removed from the sewage effluent of Hawkshead which was considered to contribute between 47% and 67% of the total phosphorus loading to the lake. At the commencement of phosphorus removal regular measurements of phosphorus in the superficial 0-4 cm layer of lake sediment were made from cores collected at random sites. Since 1986 the mean annual concentration of alkali-extractable sediment phosphorus has decreased by 23%. This change is not significant at the 5% level but nearly so. There has been no marked change in water quality over this period. Summer dominance of blue-green algae which arose in the early 1980s after decline of the previous summer forms, Ceratium spp., has been maintained. Improvement in water quality is unlikely to be achieved at the present phosphorus loading.
    Schlagwort(e): Chemistry ; Limnology ; Pollution ; Eutrophication ; Freshwater lakes ; Limnological surveys ; Phosphorus ; Phytoplankton ; Primary production ; Sediment analysis ; Water quality ; England ; Esthwaite Water
    Repository-Name: AquaDocs
    Materialart: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 119-131
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  • 74
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26301 | 23782 | 2019-03-27 05:53:49 | 26301 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Schlagwort(e): Aquaculture ; Chemistry ; Fisheries ; Philippines ; Pesticides ; Cultured organisms ; Biological sampling ; Fish ; Fishery products ; Quality assurance ; Biochemical analysis ; Lethal limits
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 84-89
    Format: 6
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  • 75
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26289 | 23782 | 2019-03-13 01:57:17 | 26289 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Schlagwort(e): Chemistry ; Education ; Technology transfer ; Chemical pollution ; Training ; Curricula
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 3-4
    Format: 2
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  • 76
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26829 | 23782 | 2019-11-19 01:08:33 | 26829 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: The paper provides the methodology in lipid extraction from fish using the Modified Folch's Method. Instructions on sample preparation, and the apparatus and reagents needed are presented. Detailed procedures in lipid extraction are provided.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fish inspection ; Fishery industry ; Food technology ; Standards ; Specifications ; Lipids
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: C-2.1-C-2.2
    Format: 2
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  • 77
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26832 | 23782 | 2019-11-19 00:56:39 | 26832 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: The paper provides the methodology in determination of free fatty acids (FFA) in fish.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Food technology ; Standards ; Specifications ; Fatty acids
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: C-5.3
    Format: 1
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  • 78
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26838 | 23782 | 2019-11-19 00:36:53 | 26838 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: The paper provides the methodology in the preparation of methyl esters by boron trifluoride method in fish. Instructions on sample preparation and the apparatus and reagents needed are presented. Detailed procedures are also provided.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Food technology ; Standards ; Specifications ; Fish oils ; Fats ; Fatty acids ; Esters ; Lipids
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: C-11.1-C-11.2
    Format: 2
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  • 79
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    Unbekannt
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26835 | 23782 | 2019-11-19 00:46:29 | 26835 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: The paper provides the methodology in the determination of thiobarbituric acid (TBA) number in fish fat. The apparatus and reagents needed are presented. Detailed procedures and calculations are also presented.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Food technology ; Standards ; Specifications ; Fish oils ; Fats ; Fatty acids
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: C-8.1-C-8.3
    Format: 3
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  • 80
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    Unbekannt
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26837 | 23782 | 2019-11-19 00:39:35 | 26837 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: The paper provides the methodology in the determination of the degree of lipid oxidation by gas chromatography. Instructions on sample preparation and the detailed procedures and calculation are provided.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Food technology ; Standards ; Specifications ; Lipids ; Fats ; Fatty acids ; Oxidation ; Chromatographic techniques
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: C-10.1
    Format: 1
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  • 81
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26840 | 23782 | 2019-11-15 07:59:29 | 26840 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: The paper provides the methodology in lipid determination of monosodium L-glutamate (MSG) content in fish jelly products. Instructions on sample preparation and the reagents needed are presented. Detailed procedures calculation are also provided.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Additives ; Food additives ; Food
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: D-2.1-D-2.3
    Format: 3
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  • 82
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26841 | 23782 | 2019-11-15 07:56:22 | 26841 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: The paper provides the methodology in the determination of sugar (sucrose) in fish product by Somogyi's method. Instructions for sample preparation and the reagents needed are presented. Detailed procedures in the determination of the sugar in a sample are provided.
    Schlagwort(e): Chemistry ; Fisheries ; Fishery industry ; Food technology ; Standards ; Specifications ; Saccharides ; Products
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: D-3.1-D-3.4
    Format: 4
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  • 83
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26846 | 23782 | 2019-11-15 07:46:46 | 26846 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: The aerobic plate count provides an estimate of the number of viable microorganisms in the food according to the medium used and the time and temperature incubation. Presented in the paper is the aerobic plate count procedure using the spread plate method. The culture media, apparatus, sample preparation, and the detailed procedures and the calculation of aerobic plate count are also provided in the paper.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Aerobic bacteria ; Microbiological analysis ; Microorganisms
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: E-2.1-E-2.3
    Format: 3
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  • 84
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26845 | 23782 | 2019-11-15 07:48:51 | 26845 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: Proper handling of samples is presented in the paper. Specifically, the procedures in the proper collection, transport, and storage of samples are presented. Moreover, the procedures of monitoring of the condition of samples in a container, and thawing of frozen samples are also provided.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Methodology ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Fish handling ; Samples ; Sample contamination ; Sample storage
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: E-1.1
    Format: 1
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  • 85
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26844 | 23782 | 2019-11-15 07:51:20 | 26844 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: Boric acid and borates were commonly used as preservatives. It acts as an antimicrobial agent; however it is not permitted in the fishery products. The paper provides the methodology in the determination of boric acid and borates in fishery products. Instruction for sample preparation and the reagents needed are presented. Detailed procedures in the determination of boric acid and borates in a sample are provided.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Additives ; Food additives ; Borate minerals
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: D-6.1-D-6.2
    Format: 2
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  • 86
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26849 | 23782 | 2019-11-15 07:41:06 | 26849 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: Staphylococcus aureus is a common organism on the skin and in the nasal passages of approximately 50% of the population. Heat-treated seafood may become contaminated with this organism by poor handling, then storage at improper temperatures allows the organism to multiply and produce its toxin. This type of food poisoning may be avoided by practicing strict personal hygiene, thorough cleaning and disinfection of equipment, and storage of susceptible food at temperatures below 10°C or above 60°C. Presented in the paper is the methodology of determining S. aureus in fish and fishery products.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Aerobic bacteria ; Microbiological analysis ; Microorganisms ; Pathogenic bacteria ; Pathogens ; Health and safety ; Public health ; Microbial contamination ; Staphylococcus aureus
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: E-5.1-E-5.4
    Format: 4
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  • 87
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26848 | 23782 | 2019-11-15 07:45:03 | 26848 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: Coliforms are Gram-negative, non-sporing, facultatively anaerobic rods which ferment lactose, producing acid and gas within 48 hrs and they belong to the family Enterobacteriaceae. Presented in the paper is the methodology of examining the presence of coliforms and E. coli for fish and fishery products.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Aerobic bacteria ; Microbiological analysis ; Microorganisms ; Microbial contamination ; Microbiology ; Pathogens ; Escherichia coli
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: E-3.1-E-3.4
    Format: 4
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  • 88
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26850 | 23782 | 2019-11-15 07:39:11 | 26850 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: Streptococci are gram-positive cocci, sometimes coccobacilli, arranged in chains. This group of streptococci resides in the intestine of warm-blooded animals. They are bile resistant and capable of growth at 45°C. Fecal streptococci form part of the microflora of many foods without necessarily indicating poor hygiene. They are found in many fermented foods, such as cheese and raw sausage, and often take part in the fermentation process. However, in meat products which have received a severe heat process, the presence of excess numbers of fecal streptococci indicates unhygienic handling and/or faulty storage. Presented in the paper is the methodology of determining the presence of fecal streptococci in fish and fishery products.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Aerobic bacteria ; Microbiological analysis ; Microorganisms ; Pathogenic bacteria ; Pathogens ; Health and safety ; Public health ; Microbial contamination
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: E-6.1-E-6.3
    Format: 3
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  • 89
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26847 | 23782 | 2019-11-15 07:43:06 | 26847 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: Salmonella is a gram-negative bacterium of the family Enterobacteriaceae. Salmonella lives in animal and human intestines and is shed through feces, which usually infects humans through contaminated water or food. The paper presents the methodology of determining the presence of Salmonella and Shigella in fish and fishery products.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Aerobic bacteria ; Microbiological analysis ; Microorganisms ; Pathogenic bacteria ; Pathogens ; Health and safety ; Public health ; Microbial contamination ; Salmonella
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: E-4.1-E-4.5
    Format: 5
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  • 90
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26865 | 23782 | 2019-11-05 03:25:17 | 26865 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: A review is made of studies conducted on cryoprotectants for use in the frozen storage of processed fishery products, such as surimi. Some 150 compounds were screened for cryoprotective effects on fish actomyosin; the findings of experiments investigating the behaviour of carp actomyosin, and fish myosin, actin and other constituent proteins during frozen storage are described. The mechanism of freeze denaturation and of the effects of cryoprotectants is outlined and the application of cryoprotectants in the development of new fish gel products considered.
    Schlagwort(e): Chemistry ; Fisheries ; Food technology ; Product development ; Freezing storage
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 64-67
    Format: 4
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  • 91
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26302 | 23782 | 2019-03-27 05:50:18 | 26302 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Schlagwort(e): Chemistry ; Fisheries ; Singapore ; Pesticides ; Biological sampling ; Fish ; Dried products ; Biochemical analysis ; Lethal limits
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 90-99
    Format: 10
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  • 92
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26801 | 23782 | 2019-10-22 05:10:19 | 26801 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: Presented in the paper is the standard procedure in the determination of ash in meat. Specifically, the procedures in the sample preparation, instrument and apparatus required, and the analytical procedures and calculation for each method are presented.
    Schlagwort(e): Chemistry ; Fisheries ; Ashes ; Ash content ; Heating ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Microbiological analysis ; Standards ; Specifications
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: A-2.1
    Format: 1
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  • 93
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26799 | 23782 | 2019-11-12 05:20:14 | 26799 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: The manual provides useful guides for laboratory workers and technical personnel. The procedures for determining the physical and chemical properties of fish meat, the analysis of oils and some additives and microbiological procedures are also included.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Microbiological analysis ; Fishery products ; Processed fishery products ; Fish inspection ; Fishery industry ; Food additives ; Food technology ; Standards ; Specifications
    Repository-Name: AquaDocs
    Materialart: book
    Format: application/pdf
    Format: application/pdf
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  • 94
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26839 | 23782 | 2019-11-15 08:02:24 | 26839 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: Polyphosphates are commonly used in the production of fish jelly products. The paper provides the methodology in the detection of polyphosphates in fish products. Instructions on the preparation of sample solution and the apparatus and reagents needed are presented. Detailed procedures in the chromatographic separation of polyphosphates are also provided.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Additives ; Food additives ; Phosphates
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: D-1.1-D-1.3
    Format: 3
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  • 95
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26297 | 23782 | 2019-03-27 06:01:19 | 26297 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Schlagwort(e): Aquaculture ; Chemistry ; Cambodia ; Pesticides ; Cultured organisms ; Biological sampling ; Fish ; Fishery products ; Biochemical analysis ; Lethal limits
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 67-70
    Format: 4
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  • 96
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26313 | 23782 | 2019-03-27 06:17:20 | 26313 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Schlagwort(e): Aquaculture ; Chemistry ; Indonesia ; Drugs ; Biological sampling ; Biochemical analysis ; Cultured organisms ; Lethal limits ; Quality control ; Penaeus monodon ; Penaeus vannamei
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 149-155
    Format: 7
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  • 97
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26304 | 23782 | 2019-03-27 03:53:19 | 26304 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Schlagwort(e): Aquaculture ; Chemistry ; Fisheries ; Viet Nam ; Pesticides ; Cultured organisms ; Biological sampling ; Fish ; Fishery products ; Lethal limits
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 106-109
    Format: 4
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  • 98
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26314 | 23782 | 2019-03-27 06:26:14 | 26314 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Schlagwort(e): Chemistry ; Fisheries ; Malaysia ; Drugs ; Biological sampling ; Biochemical analysis ; Quality control ; Lethal limits ; Penaeus monodon
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 156-159
    Format: 4
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  • 99
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26803 | 23782 | 2019-11-12 05:32:47 | 26803 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: Presented in the paper is the standard procedure in the measurement of free and expressible drips. Specifically, the required apparatus, and the analytical procedures and calculations for free and expressible drips are presented.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Microbiological analysis ; Fishery products ; Processed fishery products ; Fish inspection ; Fishery industry ; Food technology ; Standards ; Specifications
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: A-4.1-A-4.2
    Format: 2
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  • 100
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    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26804 | 23782 | 2019-11-12 05:37:03 | 26804 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Publikationsdatum: 2021-07-24
    Beschreibung: Presented in the paper is the standard procedure fish protein extractability and its determination. Specifically, the procedures in sampling and sample preparation, apparatus and reagents required, the protein extractability procedures and calculations for each method are presented.
    Schlagwort(e): Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fishery industry ; Food technology ; Standards ; Proteins ; Fish
    Repository-Name: AquaDocs
    Materialart: book_section
    Format: application/pdf
    Format: application/pdf
    Format: A-5.1-A-5.3
    Format: 3
    Standort Signatur Erwartet Verfügbarkeit
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