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  • 1
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    Significance of the photoperiod for the development of Cyclops vicinus. [Translation from: Zoologischer Anzeiger Supplementband 33, 190-195, 1969.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4806 | 1256 | 2011-09-29 15:52:39 | 4806 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: 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.
    Description: Translated from German into English
    Keywords: Biology ; Limnology ; Experimental data ; Freshwater crustaceans ; Light effects ; Photoperiodicity ; Developmental stages ; Insect eggs ; Life cycle ; Light ; Cyclops vicinus
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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  • 2
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    The possibilities and dangers in using malachite green in pisciculture.[Translation from: Informatsionnyi Byulleten Biologiya Vnutrennikh Vod No.3 17-21, 1969.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4804 | 1256 | 2011-09-29 15:52:21 | 4804 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: For many years a dye has been used in the practise of pisciculture and pond management, which is known by the name of malachite green, and is used to combat fungus on fish, fish eggs and external animal parasites on fish. The authors describe the problem of the application of malachite green in pisciculture and undertake special, complementary research.
    Description: Translated from Russian into English
    Keywords: Biology ; Fisheries ; Limnology ; Dyes ; Fish culture ; Freshwater fish ; Fish eggs ; Fungal diseases ; Toxicity tests ; Experimental research ; Oncorhynchus mykiss ; Rutilus rutilus
    Repository Name: AquaDocs
    Type: monograph
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  • 3
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    Observations on the influence of external factors on the duration of the embryonic development and on the molting rhythm of Cyclops vicinus. [Translation from: Oecologia 7, 342-355, 1971.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4813 | 1256 | 2011-09-29 15:51:28 | 4813 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: 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.
    Description: Translated from German into English
    Keywords: Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Feeding experiments ; Crustacean culture ; Temperature effects ; Light effects ; Moulting ; Embryonic development ; Lake Constance ; Cyclops vicinus
    Repository Name: AquaDocs
    Type: monograph
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  • 4
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    The dynamics of the fecundity of fishes, for example the roach, Rutilus rutilus (L.). [conclusions and figure/table captions only] [Translation from: Voprosy Ikhtiologii 3(1) 67-83, 1963] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4897 | 1256 | 2011-09-29 15:43:43 | 4897 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-07
    Description: The dynamics of the fecundity of roach, with emphasis on Rutilus rutilus (L.), were studied in waters in the European parts of the USSR. This translation provides conclusions, and figures and table captions only.
    Description: Translated from Russian into English
    Keywords: Biology ; Limnology ; Freshwater fish ; Fecundity ; Growth rate ; Russia ; Rutilus rutilus
    Repository Name: AquaDocs
    Type: monograph
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  • 5
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    Experimental research on dormancy in Cyclops vicinus [Translation from: Naturwissenschaften 56 93-94, 1969] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4910 | 1256 | 2011-03-10 09:18:30 | 4910 | Freshwater Biological Association
    Details
    Publication Date: 2021-06-24
    Description: 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.
    Description: Translated from German into English
    Keywords: Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Life cycle ; Dormancy ; Experimental research
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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