Sex determination follows a temperature reaction norm, if different sex ratios are produced as a function of larval/embryonic incubation temperature.
Under FMF temperature reaction norm, female bias is found at both low and high temperatures, while male bias is found at intermediate temperatures. Temperature thresholds defining "low" and "high" temperatures differ between taxa.
This reaction norm is one of the three main modes of temperature-dependent sex determination, and a similar reaction norm occurs in sex-chromosome bearing ectotherms as well; the latter may be caused by temperature-induced sex reversal, sex-biased mortality or differential fertilization.
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Attribution
0000-0002-0179-1153
Additional context
References:
Valenzuela N & Lance V (2004) Temperature-dependent sex determination in vertebrates. Smithsonian Institution, Washington. 194 pages. ISBN: 1588342034
Nemesházi E & Bókony V (2023) HerpSexDet: the herpetological database of sex determination and sex reversal. Scientific Data 10: 377. DOI: https://doi.org/10.1038/s41597-023-02268-y
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Preferred term label
FMF temperature reaction norm
Synonyms
TSD II
Textual definition
Sex determination follows a temperature reaction norm, if different sex ratios are produced as a function of larval/embryonic incubation temperature. Under FMF temperature reaction norm, female bias is found at both low and high temperatures, while male bias is found at intermediate temperatures. Temperature thresholds defining "low" and "high" temperatures differ between taxa. This reaction norm is one of the three main modes of temperature-dependent sex determination, and a similar reaction norm occurs in sex-chromosome bearing ectotherms as well; the latter may be caused by temperature-induced sex reversal, sex-biased mortality or differential fertilization.
Suggested parent term
No response
Attribution
0000-0002-0179-1153
Additional context
References:
Valenzuela N & Lance V (2004) Temperature-dependent sex determination in vertebrates. Smithsonian Institution, Washington. 194 pages. ISBN: 1588342034
Nemesházi E & Bókony V (2023) HerpSexDet: the herpetological database of sex determination and sex reversal. Scientific Data 10: 377. DOI: https://doi.org/10.1038/s41597-023-02268-y
Code of Conduct