COMPARATIVE EFFECTS OF MITES AND LICE ON THE REPRODUCTIVE SUCCESS OF ROCK DOVES (COLUMBA-LIVIA)

被引:104
作者
CLAYTON, DH
TOMPKINS, DM
机构
[1] Department of Zoology, University of Oxford, Oxford, 0X1 3PS, South Parks Road
关键词
ECTOPARASITES; REPRODUCTION; ROCK DOVES; MITES; LICE;
D O I
10.1017/S0031182000063964
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
We report experimental data comparing the effects of Mesostigmatid mites and Ischnoceran lice on the reproductive performance of a single group of captive rock doves (Columba livia). Several components of host reproductive success were compared for the two groups, including number of eggs laid, hatching success, nestling growth rates, fledging success, post-fledging body mass and survival. Adult body mass and survival were also compared. There was a dramatic difference in the effects of the mites and lice. The former drove host reproductive success to zero, mainly by agitating adults and causing them to incubate eggs less faithfully. Nestling growth rates and post-fledging survival were also significantly reduced by mites. Lice showed no effect on reproductive success whatsoever, even though the feather damage they cause is known to have energetic consequences (Booth, Clayton and Block, 1993). Neither parasite had a significant effect on adult birds. Although Ischnocera are found on most species of birds, our results for lice constitute the first experimental test of the impact of Ischnocera on avian reproductive success (preliminary report by Clayton and Tompkins, 1994). We discuss reasons for the different effects of mites and lice, including the relationship of horizontal (mites) and vertical (lice) transmission to the evolution of virulence,
引用
收藏
页码:195 / 206
页数:12
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