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Titolo:
Surprising similarity of sneaking rates and genetic mating patterns in twopopulations of sand goby experiencing disparate sexual selection regimes
Autore:
Jones, AG; Walker, D; Lindstrom, K; Kvarnemo, C; Avise, JC;
Indirizzi:
Univ Georgia, Dept Genet, Athens, GA 30602 USA Univ Georgia Athens GA USA30602 eorgia, Dept Genet, Athens, GA 30602 USA Univ Helsinki, Dept Systemat & Ecol, Zool Lab, FIN-00014 Helsinki, FinlandUniv Helsinki Helsinki Finland FIN-00014 ab, FIN-00014 Helsinki, Finland Univ Stockholm, Dept Zool, S-10691 Stockholm, Sweden Univ Stockholm Stockholm Sweden S-10691 Zool, S-10691 Stockholm, Sweden
Titolo Testata:
MOLECULAR ECOLOGY
fascicolo: 2, volume: 10, anno: 2001,
pagine: 461 - 469
SICI:
0962-1083(200102)10:2<461:SSOSRA>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTRASPECIFIC BROOD PARASITISM; RED-WINGED BLACKBIRDS; MULTIPLE PATERNITY; POMATOSCHISTUS-MINUTUS; MICROSATELLITE ANALYSIS; REPRODUCTIVE SUCCESS; NATURAL-POPULATIONS; SPERM COMPETITION; STRATEGIES; FERTILIZATIONS;
Keywords:
cuckoldry; mating strategies; microsatellites; Pomatoschistus minutus; sexual selection;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
53
Recensione:
Indirizzi per estratti:
Indirizzo: Jones, AG Oregon State Univ, Dept Zool, 3029 Cordley Hall, Corvallis, OR 97331 USA Oregon State Univ 3029 Cordley Hall Corvallis OR USA 97331 1 USA
Citazione:
A.G. Jones et al., "Surprising similarity of sneaking rates and genetic mating patterns in twopopulations of sand goby experiencing disparate sexual selection regimes", MOL ECOL, 10(2), 2001, pp. 461-469

Abstract

Molecular markers have proved extremely useful in resolving mating patterns within individual populations of a number of species, but little is knownabout how genetic mating systems might vary geographically within a species. Here we use microsatellite markers to compare patterns of sneaked fertilization and mating success in two populations of sand goby (Pomatoschistus minutus) that differ dramatically with respect to nest-site density and thedocumented nature and intensity of sexual selection. At the Tvarminne sitein the Baltic Sea, the microsatellite genotypes of 17 nest-tending males and mean samples of more than 50 progeny per nest indicated that approximately 35% of the nests contained eggs that had been fertilized by sneaker males. Successful nest holders mated with an average of 3.0 females, and the distribution of mate numbers for these males did not differ significantly from the Poisson expectation. These genetically deduced mating-system parameters in the Tvarminne population are remarkably similar to those in sand gobies at a distant site adjoining the North Sea. Thus, pronounced differences in the ecological setting and sexual selection regimes in these two populations have not translated into evident differences in cuckoldry rates or other monitored patterns of male mating success. In this case, the ecological setting appears not to be predictive of alternative male mating strategies,a finding of relevance to sexual selection theory.

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Documento generato il 09/07/20 alle ore 01:15:59