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
Drosophila melanogaster can 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.
259-261
Kraaijeveld, A.R.
4af1791a-15cf-48b9-9fd8-b3a7fb450409
Limentani, E.C.
9752f760-17db-4859-9333-24c10e8345b1
Godfray, H.C.J.
b0e8da11-3f2c-4007-bad2-5fd70fd1baa4
7 February 2001
Kraaijeveld, A.R.
4af1791a-15cf-48b9-9fd8-b3a7fb450409
Limentani, E.C.
9752f760-17db-4859-9333-24c10e8345b1
Godfray, H.C.J.
b0e8da11-3f2c-4007-bad2-5fd70fd1baa4
Kraaijeveld, A.R., Limentani, E.C. and Godfray, H.C.J.
(2001)
Basis of the trade off between parasitoid resistance and larval competitive ability in Drosophila melanogaster.
Proceedings of the Royal Society B: Biological Sciences, 268 (1464), .
(doi:10.1098/rspb.2000.1354).
Abstract
Drosophila melanogaster can 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.
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Published date: 7 February 2001
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Local EPrints ID: 32808
URI: http://eprints.soton.ac.uk/id/eprint/32808
ISSN: 1471-2954
PURE UUID: 5dfbb931-6f1e-43c1-a5fe-9a1db2941772
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Date deposited: 12 May 2006
Last modified: 16 Mar 2024 03:48
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Author:
E.C. Limentani
Author:
H.C.J. Godfray
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