Journal
SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY
Volume 20, Issue 3, Pages 256-263Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.semcdb.2008.12.002
Keywords
Environmental sex determination; Temperature-dependent sex determination TSD; Sex differentiation; Aromatase
Categories
Funding
- National Marine Fisheries Service
- USDA
- USDA CSREES [2007-35203-18082]
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Flounder of the genus Paralichthys exhibit a unique mode of sex determination where both low and high temperatures induce male-skewed sex ratios, while intermediate temperatures produce a 1: 1 sex ratio. Male differentiation is thus easily induced in genetic females creating a combination of genetic (GSD) and environmental sex determination (ESD). Since male flounder become reproductively fit at substantially smaller body sizes than females, temperature or other environmental variables that elicit lower growth rates may also influence sex differentiation toward male development. This review covers our current knowledge of sex determination and differentiation in flatfishes including possible adaptive significance of ESD and involvement of factors such as aromatase (cyp19). (C) 2008 Elsevier Ltd. All rights reserved.
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