Horváth L, Székely Cs, Boczonádi Zs, Mészáros E, Bercsényi M, Urbányi B, Müller T
Department of Fish Culture, Szent István University, Páter K. u. 1 H-2100 Gödöllő, Hungary.
Acta Biol Hung. 2011 Dec;62(4):485-8. doi: 10.1556/ABiol.62.2011.4.13.
European eel is a catadromous fish species, which means that after living in freshwater premature individuals adapt to sea water, and migrate to the Sargasso Sea for spawning. Although male eel can be sexually matured even in freshwater, to date, it was believed that female eel can be matured only in seawater. Here we show that the process of sexual maturation may be induced in freshwater by treating female eels with carp pituitary (GSI = 9.87 ± 1.55%). It is thus proposed that seawater condition is not an obligatory environment for stimulating gametogenesis and for artificial maturation of the European eel in neither gender.
欧洲鳗鲡是一种降河洄游鱼类，这意味着在淡水中生长的幼鳗会适应海水环境，并洄游到马尾藻海产卵。尽管雄性鳗鲡即使在淡水中也能性成熟，但迄今为止，人们认为雌性鳗鲡只有在海水中才能成熟。在此我们表明，通过用鲤鱼脑垂体处理雌性鳗鲡（性腺成熟度指数=9.87±1.55%），有可能在淡水中诱导其性成熟过程。因此可以提出，海水环境并非刺激欧洲鳗鲡两性配子发生和人工催熟的必要环境。
