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Experimental studies on nymphal growth in Leptophlebia vespertina (L.) (Ephemeroptera)
Author(s) -
BRITTAIN JOHN E.
Publication year - 1976
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.1976.tb01633.x
Subject(s) - mayfly , instar , biology , nymph , incubation period , incubation , baetidae , ecology , population , growth rate , zoology , larva , demography , biochemistry , geometry , mathematics , sociology
Summary The mayfly, Leptophlebia vespertina (L.) was reared at field temperatures in the laboratory. The egg incubation period was 21–26 days. There were seventeen to nineteen nymphal instars. Growth was generally rapid during the first 3½ months and slow thereafter. This change occurred at the same time in both the laboratory and the field population. Temperature is considered to be the major factor regulating this and other changes in growth rate.