학술논문
Effects of daily thermal fluctuations on the Atlantic silverside, a fish with temperature‐dependent sex determination.
Document Type
Article
Source
Subject
*TEMPERATURE-dependent sex determination
*FISH physiology
*LIFE history theory
*SEX ratio
*EFFECT of temperature on fishes
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Language
ISSN
0022-1112
Abstract
Temperature‐dependent sex determination (TSD) occurs when the temperature during development affects gonad determination. Historically, most work on TSD in fishes was conducted under constant temperatures, yet daily fluctuating temperatures can significantly alter fish physiology and life history. Thus, we subjected the Atlantic silverside, Menidia menidia (a TSD species), to 28, 28 ± 2 and 28 ± 4°C (a high, masculinizing temperature) and quantified sex ratios and length. We found that the percentage of females increased by 60%–70% when the fish were exposed to daily fluctuating temperatures (from 10% to 16% and 17% under fluctuations). [ABSTRACT FROM AUTHOR]