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Life‐history variations of killifish ( Aphanius sophiae ) populations in two environmentally different habitats in central Iran
Author(s) -
Kamal S.,
Bakhtiyari M.,
Abdoli A.,
Eagderi S.,
Karami M.
Publication year - 2009
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/j.1439-0426.2009.01242.x
Subject(s) - biology , killifish , habitat , reproduction , population , spring (device) , ecology , life history theory , life history , zoology , fishery , fish <actinopterygii> , demography , mechanical engineering , sociology , engineering
Summary Two populations of Aphanius sophiae from two different habitats (one in a spring with stable environmental conditions and the other in a river with variable conditions) were examined to determine whether these conditions elicit differences in life history traits. Age composition revealed that females from the spring live longer. Von Bertalanffy growth parameters showed that L(∞) in the river population was higher than in the spring population. GSI showed a shorter reproduction period in A. sophiae from the river system. Egg diameter was significantly larger in the spring population. These results confirm the hypothesis of the response of killifish to local selective pressures in different habitats through adaptations via changes in the duration of the reproductive period, egg diameter, size changes, age composition and growth rate.