Mate choice and maternal selection for specific parasite resistances before; during and after fertilization.
Details
Serval ID
serval:BIB_343F5674681E
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Mate choice and maternal selection for specific parasite resistances before; during and after fertilization.
Journal
Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
ISSN
0962-8436 (Print)
ISSN-L
0962-8436
Publication state
Published
Issued date
1994
Peer-reviewed
Oui
Volume
346
Number
1317
Pages
303-311
Language
english
Abstract
As Hamilton & Zuk pointed out, some loci may be of special importance for sexual selection because they play a crucial role in the co-evolution between parasites and hosts. In previous work I have tried to extend Hamilton & Zuk's parasite hypothesis for sexual selection, partly by including findings of immunologists and endocrinologists: in some species, handicapping signals may specifically reveal the current needs of the immune system which depends on the host's susceptibilities to different parasites. In other species, depending on the constellation of some key variables, non-handicapping signals could directly reveal the identity of resistance genes. Despite the general conflict of interests between the sexes, sexual selection may, in these cases, lead to signallers (i.e. mostly the males) focusing on improving their offspring's survival chances instead of trying to maximize their number. Males achieve this by allowing choosy females to optimize costs and benefits of each resistance. Both parts of the extended parasite hypothesis suggest that female choice for specific heritable matequalities aim to optimize the resistance genetics of the unfertilized eggs. However, intersexual selection could go further than just choosing a mate. Here, I list the possible selection levels at which the mother and/or her ova could select for specific sperm haplotypes before, during and after the formation of the zygote. For many of these possible selection levels, evidence suggests that selection after mating might favour heterozygosity or even certain specific allele combinations at loci which are involved in the parasite-host co-evolution (e.g. the major histocompatibility complex or the transferrin locus).
Keywords
Animals, Female, Fertilization, Host-Parasite Interactions, Male, Parasites/genetics, Sexual Behavior, Animal
Pubmed
Create date
25/01/2008 11:43
Last modification date
20/08/2019 14:20