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Food limitation in naupliar and adult Diaptomus pallidus 1
Author(s) -
Williamson Craig E.,
Butler Nancy M.,
Forcina Lorraine
Publication year - 1985
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1985.30.6.1283
Subject(s) - liter , biology , zoology , fecundity , dry weight , dry matter , starvation , botany , ecology , population , endocrinology , demography , sociology
The relationships between survivorship and fecundity of Diaptomus pallidus and algal food concentrations ( Cryptomonas reflexa ) were examined with a flow‐through system that prevents the depletion and settling of algal cells. Egg production in adult females increased with increasing food concentration up to a maximum at 600 µ g dry wt liter −1 . Under starvation conditions, egg production stopped and survival decreased, whereas at 60 µ g dry wt liter −1 production was halted and survival was high. Adults survived longer under conditions of starvation than did nauplii. Adult survival was high at all food concentrations; naupliar survival was highest at 60 µ g dry wt liter −1 , slightly lower at 600 µ g dry wt liter −1 , and much lower at 6,000 µ g dry wt liter −1 . Naupliar development was faster at 600 and 6,000 µ g dry wt liter −1 than at 60 µ g dry wt liter −1 .