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Evolution of hemocyte concentration in the melanogaster subgroup species.

Authors :
Dupas S
Morand S
Eslin P
Source :
Comptes rendus biologies [C R Biol] 2004 Feb; Vol. 327 (2), pp. 139-47.
Publication Year :
2004

Abstract

We explore two possible hypotheses about the ecological factors driving the evolution of hemocyte load in insects. The first is parasite infection risk, its variability and the genetic diversity of parasites. The other supposes that all the other factors of environmental stress drive the evolution through a pleiotropic selection on metabolic rate. The two hypotheses are tested with data on hemocyte load and ecology of six Drosophila species of the melanogaster subgroup. Hemocyte load correlates significantly with the parasite-driven selection index, but not with the stress selection index. The result being based on too little data to conclude definitely, this work must be considered more as a methodological research based on published results on insect physiology immunity and ecology rather than an empirical evidence of such a relationship.

Details

Language :
English
ISSN :
1631-0691
Volume :
327
Issue :
2
Database :
MEDLINE
Journal :
Comptes rendus biologies
Publication Type :
Academic Journal
Accession number :
15060985
Full Text :
https://doi.org/10.1016/j.crvi.2004.01.003