DIGESTIVE ENZYMES IN 11 FRESH-WATER TELEOST FISH SPECIES IN RELATION TO FOOD HABIT AND NICHE SEGREGATION

被引：146

作者：

CHAKRABARTI, I ^{[1
]}

GANI, A ^{[1
]}

CHAKI, KK ^{[1
]}

SUR, R ^{[1
]}

MISRA, KK ^{[1
]}

机构：

[1] UNIV CALCUTTA,DEPT ZOOL,ANIM PHYSIOL & BIOCHEM LAB,CALCUTTA 700019,W BENGAL,INDIA

来源：

COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-PHYSIOLOGY | 1995年 / 112卷 / 01期

关键词：

AMYLASE; ESTERASE; PROTEASE; DIGESTIVE STRATEGY; LENTIC WATER; NICHE SEGREGATION; ADAPTATION; TELEOST FISH; POLYCULTURE;

D O I：

10.1016/0300-9629(95)00072-F

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Food habits, gut pH and six major digestive enzymes of 11 teleost fishes, comprising one species of each of the families of Notopteridae, Channidae, Cichlidae and eight species of endemic and exotic Cyprinidae have been observed, Almost all the enzymes are present in all the fishes irrespective of their food habit. Teleost fishes of confined water (lentic) exhibit little food preference. Absence of any digestive strategy is due to incomplete food niche segregation in this ecosystem. It is suggested that during the evolution of the vertebrate digestive system, fishes of lentic communities exhibited no canalization in digestive strategy due to incomplete food niche segregation and developed plasticity for digestion.

引用

页码：167 / 177

页数：11

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