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  • Freshwater crustaceans  (65)
  • Chemistry  (48)
  • brackishwater environment
  • Freshwater Biological Association  (102)
  • Fisheries Society of Nigeria  (20)
  • 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
    Publication Date: 2021-07-06
    Description: 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.
    Description: Translated from Italian into English
    Keywords: Biology ; Ecology ; Limnology ; Freshwater lakes ; Freshwater crustaceans ; Animal morphology ; Life cycle ; Ecological distribution ; Italy ; Lake Maggiore ; Megacyclops viridis
    Repository Name: AquaDocs
    Type: 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
    Publication Date: 2021-07-06
    Description: 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.
    Description: Translation from the original thesis published in 1966. Translated from Swedish into English
    Keywords: Biology ; Limnology ; Freshwater lakes ; Freshwater ecology ; Population dynamics ; Freshwater crustaceans ; Embryonic development ; Distribution ; Sweden
    Repository Name: AquaDocs
    Type: 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
    Publication Date: 2021-07-06
    Description: Sensillae of the limbs of Cladocera are described with emphasis on Eurycercus lamellatus.
    Description: Translated from Russian into English
    Keywords: Biology ; Limnology ; Freshwater crustaceans ; Animal morphology ; Sense organs
    Repository Name: AquaDocs
    Type: 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
    Publication Date: 2021-07-06
    Description: 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.
    Description: Translated from Russian into English
    Keywords: Ecology ; Limnology ; Freshwater crustaceans ; Trophodynamic cycle ; Feeding behaviour ; Feeding ; Food composition ; Experimental research ; Algae ; Oxygen consumption
    Repository Name: AquaDocs
    Type: monograph
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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
    Publication Date: 2021-07-06
    Description: 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.
    Description: Translated from Russian into English
    Keywords: Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Animal morphology ; Animal physiology ; Feeding behaviour
    Repository Name: AquaDocs
    Type: 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
    Publication Date: 2021-07-06
    Description: 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.
    Description: Translated from Russian into English
    Keywords: Biology ; Limnology ; Freshwater crustaceans ; Animal morphology ; Animal organs ; Chydoridae
    Repository Name: AquaDocs
    Type: monograph
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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
    Publication Date: 2021-07-06
    Description: 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.
    Keywords: Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Animal organs ; Predation ; Feeding behaviour ; Freshwater ecology ; Russia
    Repository Name: AquaDocs
    Type: 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
    Publication Date: 2021-07-06
    Description: 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.
    Description: Translated from Russian into English
    Keywords: Ecology ; Limnology ; Freshwater crustaceans ; Animal morphology ; Freshwater ecology ; Taxonomy
    Repository Name: AquaDocs
    Type: 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
    Publication Date: 2021-07-06
    Description: 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.
    Description: Translated from Russian into English
    Keywords: Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Food composition ; Feeding ; Algae ; Carbon 14 ; Bacteria ; Detritus ; Polyphemus pediculus
    Repository Name: AquaDocs
    Type: 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
    Publication Date: 2021-07-06
    Description: 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.
    Description: Translated from German into English
    Keywords: Biology ; Ecology ; Limnology ; Freshwater Lakes ; Freshwater crustaceans ; Temporal distribution ; Temporal variations ; Life cycle ; Cyclops strenuus
    Repository Name: AquaDocs
    Type: monograph
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