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Exploring the structure of genetic variation and the influences of demography on effective population size in the gag grouper Mycteroperca microlepi (Goode & Bean)
Author(s) -
Jue N. K.
Publication year - 2006
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2006.01273.x
Subject(s) - biology , grouper , genetic variation , population , effective population size , variation (astronomy) , zoology , sex ratio , ecology , demography , fishery , genetics , fish <actinopterygii> , gene , physics , sociology , astrophysics
Using 11 microsatellite markers, genetic analyses of three successive year‐classes of gag Mycteroperca microlepis juveniles across the north‐eastern Gulf of Mexico revealed a lack of spatial structure and very little temporal variation between year‐classes. These results are consistent with long‐term effective population sizes on the order of 30 000 adults. The importance of reproductive‐style and sex‐ratio variation is discussed as an important influence on long‐term effective sizes.