SEX‐RATIO CONTROL IN A PARASITIC WASP, NASONIA VITRIPENNIS . II. EXPERIMENTAL ANALYSIS OF AN OPTIMAL SEX‐RATIO MODEL
نویسندگان
چکیده
منابع مشابه
Inheritance of gynandromorphism in the parasitic wasp Nasonia vitripennis.
The parasitic wasp Nasonia vitripennis has haplo-diploid sex determination. Males develop from unfertilized eggs and are haploid, whereas females develop from fertilized eggs and are diploid. Females and males can be easily distinguished by their morphology. A strain that produces individuals with both male and female features (gynandromorphs) is studied. We provide data on female/male patterni...
متن کاملHaploid females in the parasitic wasp Nasonia vitripennis.
The insect order of Hymenoptera (ants, bees, sawflies, and wasps) consists almost entirely of haplodiploid species. Under haplodiploidy, males develop from unfertilized eggs and are haploid, whereas females develop from fertilized eggs and are diploid. Although diploid males commonly occur, haploid females have never been reported. In analyzing the phenomenon of gynandromorphism in the parasito...
متن کاملGenetic variation for sex ratio traits within a natural population of a parasitic wasp, Nasonia vitripennis.
By analyzing isofemale strains extracted from a natural population of Nasonia vitripennis, we detected variation for the sex ratios produced in fresh hosts (first sex ratios) and in previously parasitized hosts (second sex ratios). Under simple assumptions of population structure, this between-strain heterogeneity of first sex ratios results in heterogeneity of fitnesses. There is approximately...
متن کاملQuantitative genetics of sex ratio traits in the parasitic wasp, Nasonia vitripennis.
We detected significant parent-offspring regressions for the first sex ratio (the sex ratio produced by a female in a fresh host) and the second sex ratio (the sex ratio produced by a female in a previously parasitized host) in the parasitic wasp, Nasonia vitripennis. For both traits, estimates of the narrow-sense heritability range from approximately 0.05 to approximately 0.15 (depending on ho...
متن کاملQuantity matters: male sex pheromone signals mate quality in the parasitic wasp Nasonia vitripennis.
Sexual selection theory asserts that females are well adapted to sense signals indicating the quality of potential mates. One crucial male quality parameter is functional fertility (i.e. the success of ejaculates in fertilizing eggs). The phenotype-linked fertility hypothesis (PLFH) predicts that functional fertility of males is reflected by phenotypic traits that influence female mate choice. ...
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ژورنال
عنوان ژورنال: Evolution
سال: 1986
ISSN: 0014-3820,1558-5646
DOI: 10.1111/j.1558-5646.1986.tb00476.x