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Differences in maturity age can lead to skewed sex ratios on spawning grounds; if one sex matures later, fewer individuals survive the return migration. 4. Human Development and Invariance

: Individuals mature first as females and later transition to males.

: In some sex-changing species, a subset of the population may skip the "first" sex phase entirely and mature directly into the "second" sex (e.g., "pure males" in protogynous species). 3. Case Studies in Wildlife sex matures

Maturation timing often creates (SSD), where one sex is significantly larger than the other. Maturation Observations Birds

: Sex hormones and maternal effects play a significant role in the physiological transition to maturity. Sex-ratio evolution in sex changing animals - PubMed Differences in maturity age can lead to skewed

: The ratio of adult males to females in a population (Adult Sex Ratio) often dictates maturation timing. Male-skewed environments may cause females to mature later, and vice versa. 2. Maturation in Specialized Sexual Systems

: Environmental factors like prey availability, water temperature, and energy allocation are primary drivers of when an individual matures. : In some sex-changing species, a subset of

Males may mature earlier (approx. 5–6 years) compared to females (approx. 7–8 years).