Basis of the trade-off between parasitoid resistance and larval competitive ability in Drosophila melanogaster
Basis of the trade-off between parasitoid resistance and larval competitive ability in Drosophila melanogaster
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DOI：
10.1098/rspb.2000.1354
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发表时间：
2001-02-07
影响因子：
4.7
通讯作者：
Godfray, HCJ
中科院分区：
文献类型：
--
作者：
Kraaijeveld, AR;Limentani, EC;Godfray, HCJ
Drosophila melanogaster call be artificially selected for increased resistance against parasitoid wasps that attack the larvae. Lines selected for greater resistance are poorer larval competitors under conditions of resource scarcity): Here we investigated the mechanistic basis of this apparent trade-off. We: found that resistant lines have approximately twice the density of haemocytes (blood cells) than that of controls. Haemocytes are involved in encapsulation, the chief cellular immune defence against parasitoids. We have previously shown that resistant lines feed more slowly than controls and hypothesize that limiting resources are being switched from trophic to defensive functions.
