GLASS EEL (ANGUILLA-ANGUILLA) ACCLIMATION TO FRESH-WATER AND SEAWATER - MORPHOLOGICAL-CHANGES OF THE DIGESTIVE-TRACT

被引:0
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作者
CICCOTTI, E [1 ]
MACCHI, E [1 ]
ROSSI, A [1 ]
CATALDI, E [1 ]
CATAUDELLA, S [1 ]
机构
[1] UNIV ROMA LA SAPIENZA, DIPARTIMENTO BIOL ANIM & UOMO, I-00185 ROME, ITALY
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D O I
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中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Glass eels (Anguilla anguilla, L. 1758) caught during ascent at the mouth of the River Tiber were kept in aquaria with freshwater and full strength salinity (35 parts per thousand) for four months. Morphological features of glass eels at capture and after four months of experimental rearing are described. The structure of the gut, an important osmoregulatory organ, observed in glass eels in seawater experimental rearing suggests that they undergo an irreversible process of adaptation to freshwater, despite the fact of survival in seawater.
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页码:74 / 81
页数:8
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