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Nongenomic sexual differentiation has evolved in several types of fishes and you can reptiles
Nongenomic Intimate Distinction and you may Intimate Liberty
Within these species, intercourse results from additional signals. Like, temperature during embryogenesis ‘s the cue functioning on autosomal family genes in order to end in men and you may ladies in lots of types. In several species of flounder, as an instance, raised temperature of your liquids where in actuality the larval seafood make results in a higher proportion of men (Yamamoto, 1999). Also, a number of turtle types the new incubation heat of one’s eggs has an effect on new sex ratio of your own animals (Crews ainsi que al., 1989).
In a few types, gender devotion will be delay up until really once delivery or even the intercourse can even alter following the birth out of an organism. You to definitely interesting studies found that several species of seafood create intimate phenotypes considering the fish’s societal rating inside the an excellent group (Baroiller et al., 1999; Warner, 1984). 
This new bluish-oriented wrasse are a beneficial polygynous coral reef fish that have three phenotypes you to are very different in dimensions, coloration, reproductive organs, physiology, and you can decisions (Godwin mais aussi al., 1996; Warner and you will Swearer, 1991). This type of phenotypes is ladies, initial-phase men, and you may terminal-stage guys.
