EGG PREDATION BY COPEPODS IN DAPHNIA BROOD CAVITIES

被引：31

作者：

GLIWICZ, ZM ^{[1
]}

STIBOR, H ^{[1
]}

机构：

[1] UNIV WARSAW,DEPT HYDROBIOL,NOWY SWIAT 67,PL-00046 WARSAW,POLAND

来源：

OECOLOGIA | 1993年 / 95卷 / 02期

关键词：

CLADOCERA; CLUTCH SIZE; COPEPODS; DAPHNIA; FOOD LIMITATION;

D O I：

10.1007/BF00323503

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Both field observations and enclosure experiments show that juvenile copepods enter Daphnia brood cavities to feed on Daphnia eggs and embryos. The ability to perform such in vivo exploitation is reported for both cyclopoid and calanoid copepods. Copepodites of Acanthocyclops robustus (G.O. Sars) were found to eat eggs in brood cavities of D. magna, D. pulex and D. pulicaria in experimental enclosures rich in algae. Copepodites of Eudiaptomus gracilus (G.O. Sars) were found in brood cavities of D. hyalina in a mesotrophic lake. The copepods' intrusions into brood cavities caused dramatic declines in the clutch size of infested Daphnia, and this predation effect could easily be confused with the effect of severe food limitation.

引用

页码：295 / 298

页数：4

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