PREDATION BY CHAOBORIDS ON TYPICAL AND SPINED DAPHNIA-PULEX

被引：29

作者：

PAREJKO, K ^{[1
]}

机构：

[1] UNIV WISCONSIN,DEPT ZOOL,MADISON,WI 53706

来源：

FRESHWATER BIOLOGY | 1991年 / 25卷 / 02期

关键词：

D O I：

10.1111/j.1365-2427.1991.tb00486.x

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

1. In laboratory predation experiments, predation rates were determined for fourth-instar larvae of the chaoborids (Insecta: Diptera) Mochlonyx sp. and Chaoborus americanus preying on four juvenile instars and adult Daphnia pulex (clone SBL). In the case of Mochlonyx, predation was most intense on second-instar juvenile Daphnia while Chaoborus preyed equally on second and third instars. 2. Mochlonyx and Chaoborus induced an antipredator defence (neck-teeth) which was most frequently expressed in second-instar juvenile Daphnia. Expression of this antipredator phenotype was correlated with a reduced rate of Mochlonyx predation.

引用

页码：211 / 217

页数：7

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