Table 1.

foxl2 expression profile.

Species	Express before MGD	Sexual dimorphic expression during SDi	Reverse parabola expression	Thermo-sensitive	Population used	Positively correlated with cyp19a	Regulate cyp19a directly	Regulate cyp19a by sf-1	SDe mode	Reference
Nile tilapia	√	√	×	NS	XX female	√	NS	NS	GSD+TE	(Ijiri et al., 2008)
					XY male
	√	√	NS	NS	XX female	√	√	√		(Wang et al., 2007)
					XY male
					XY female
					XX male
Japanese flounder	√	√	NS	√	XX female	√	√	NS	GSD+TE£	(Yamaguchi et al., 2007)
Medaka	×	√	NS	NS	Mixed sexes#	NS	NS	NS	GSD+TE	(Nakamoto et al., 2006)
Airbreathing catfish	√	√	√	NS	Mixed sexes	√	NS	NS	GSD+TE	(Sridevi and Senthilkumaran, 2011)
Rainbow trout	√	√	NS	NS	XX female	√	NS	NS	GSD+TE	(Baron et al., 2004)
					XY male
	√	√	√	NS	XX female	×	NS	NS		(Vizziano et al., 2007)
					XY male
Willow minnow	√	NS	NS	NS	Mixed sexes	NS	NS	NS	GSD+TE£	(Ashida et al., 2013)
Zebrafish	√	√	√	NS	Mixed sexes§	NS	NS	NS	GSD+TE	(Hossain, 2010)
Oryzias luzonensis	√	√	NS	NS	Mixed sexes§	NS	NS	NS	GSD+TE	(Nakamoto et al., 2009)
Pacific oyster	NS	NS	√	√	Mixed sexes	NS	NS	NS	GSD+TE	(Santerre et al., 2013)
American alligators	√	×	NS	×	Mixed sexes∫	NS	NS	NS	TSD	(Janes et al., 2013)
Snapping turtle	√	√	√	√	Mixed sexes∫	NS	NS	NS	TSD	(Shoemaker-Daly et al., 2010)
Red-eared slider turtle	√	√	NS	√	Mixed sexes∫	NS	NS	NS	TSD	(Loffler et al., 2003)
	√	√	NS	√	Mixed sexes∫	NS	NS	NS		(Shoemaker et al., 2007)
Bluegill sunfish	√	NS	√	√	Mixed sexes	NS	NS	NS	GSD or TSD or GSD+TE	Present work

MGD, morphological gonad differentiation; SDi, sex differentiation; SDe, sex determination; GSD, genetic sex determination; TSD, temperature-dependent sex determination; TE, temperature effects. √, yes; ×, no; NS, not studied. ^#, genetic sex could be identified by PCR-based strategy. ^§, sex could be distinguished by a molecular marker. ^∫, mono-sex was produced at female/male producing temperature. ^£, Sex determination has been claimed as GSD+TE or TSD, here we refer to Ospina-Álvarez and Piferrer (2008).