Lepomis gulosus

Fig. 43. Esterase isozymes in the brain of the interspecific sunflsh hybrids Lepomis gulosus X L. microlophis RE, male redear sun-fish IFM, female warmouth mixture, mixture of the redear extracts of male and female hybrid normal, morphologically normal hybrid hybrid abnormal, hybrid with a malformation of the jaw. Note that the esterase isozyme unique to the paternal redear sunflsh (RE-EST) is absent in both hybrids. (After Whitt et al., 1972)...

In connection with this, the analysis of isozymes of interspecific crosses is demonstrative. In interspecies fish hybrids of Lepomis gulosus x (JL. microlophus the inhibition of one of the paternal esterases was observed concomitant with asynchronous gene activation (Fig. 43 Whitt et al., 1972). In Micropterus salmonides x < Lepomis cyanellus fish hybrids the expression of maternal glucoso-6-phosphate dehydrogenase and one of the liver esterases is inhibited (Whitt et al., 1973a,b). Some of the fractions of paternal esterases are not active in virilisX( D. littoralis hybrids (Korochkin et al., 1973 a). 

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