Trade-off between parasitoid resistance and larval competitive ability in Drosophila melanogaster
Article Abstract:
Scientists studied heritable variation in encapsulation of the endoparasitoid Asobara tabida in the Drosophila melanogaster. The larvae of A. tabida develops inside the body of D. melanogaster and will kill the fly unless the fly mounts a defence. The existence of variation suggests that there are costs to parasitoid defence which are as yet unknown. The research revealed that reduced defence ability in flies without endoparasitoids gives a higher resistance against A. tabida. It is a correlated response to artificial selection which will probably vary across time and space.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Exploitation of cold temperature as defence against parasitoids in bumblebees
Article Abstract:
Use of cold temperature in retardation of parasite development can prolong the lifespan of the hosts. An experiment on host-paratisoid systems in bumblebees demonstrates that parasitized bumblebee workers that stayed in the field overnight instead of going back to their nests, reduced the chances of successful parasite growth. It has been found out that parasitized bumblebees stayed in the field overnight seven times longer than usual, a behaviour that enhances colony success by prolonging the lifespan of the parasitized workers.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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Hunger tolerance and Leishmania in sandflies
Article Abstract:
Issues are presented concerning the evidence which exists for a link between the selection of sandflies and hunger tolerance by the parasite Leishmania major. The importance of sugar levels in the sandflies' food plants is discussed.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
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