{"refrec":{"BRefID":4229,"RR":"<b>Lo Nostro, F.; Andreone, L.; Guerrero, G.A.; Grier, H.</b> (2000). Annual cycle of the testis in the swamp eel, <i>Synbranchus marmoratus</i> (Teleostei, Synbranchidae), a protogynic, diandric fish, <b><i>in</i></b>: Norberg, B. <i>et al.</i> (Ed.) <i>Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999.</i> pp. 254","BEntID":4229,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":", <b><i>in</i></b>: Norberg, B. <i>et al.</i> <i>Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999. International Symposium on the Reproductive Physiology of Fish,</i> 6: pp. 254","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Lo Nostro, F.; Andreone, L.; Guerrero, G.A.; Grier, H.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Lo Nostro, F. <i>et al.</i>","Englishabstract":"Annual breeding seasons and the cycle of spermatogenesis varies between teleost species. Recently, five reproductive classes were described in a perciform fish, Centropomus undecimalis, based upon histological changes observed in the germinal epithelium of the testis. S. marmoratus, like perciform teleosts, has a lobular unrestricted testes type, but it is also a protogynic, diandric fresh water fish. As in Monopterus albus, hermaphroditism is sequential, and constitutes natural sex reversal. 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