Premium
Effects of Thermal Fluctuations on the Relative Survival of Greenthroat Darter Young from Stenothermal and Eurythermal Waters
Author(s) -
Hubbs Clark
Publication year - 1964
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1933853
Subject(s) - ecology , population , adaptation (eye) , biology , geography , demography , sociology , neuroscience
Adaptation of a stenothermal spring population of greenthroat darter young to thermal fluctuations is compared experimentally with that of eurythermal stream populations of the same species. A constant temperature locality was chosen for the stenothermal population collection site. Stocks of the stream population were obtained from 3 nearby areas in the same stream system. Experiments were carried out on zygotes derived from gametes removed from wild—caught parents and the resulting developmental stages through late larvae. Results showed increased resistance to thermal shock with increased temperature fluctuations.