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Seasonality, Population Dynamics and Production of Daphnia longispina in the Subtropical Lake Bhimtal (U.P.), India
Author(s) -
Sharma P. C.,
Pant M. C.
Publication year - 1987
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19870720109
Subject(s) - fecundity , daphnia , seasonality , population , subtropics , biology , population density , altitude (triangle) , mortality rate , ecology , zoology , crustacean , demography , mathematics , geometry , sociology
Seasonal variation in population density, birth rate, mortality and production of a daphnid was studied in a high, altitude sub‐tropical lake. A bimodal growth curve with maxima during summer and autumn was observed. A positive correlation was reported between fecundity and death rate, probably due to a difference in age specific death rate combined with a high relative frequency of juveniles in a growing population. The production of Daphnia longispina correlates better with temperature than with food. The P/B ratio was higher during summer and autumn months.