Sex Determination in the Sawfly, Athalia rosae ruficornis (Hymenoptera): Occurrence of Triploid Males

Naito, Tikahiko; Suzuki, Hiroshi

doi:10.1093/oxfordjournals.jhered.a111042

Cited by 80 publications

(64 citation statements)

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“…Diploid males are effectively sterile as they produce diploid sperm (MacBride, 1946). This system of single locus complementary sex determination (CSD) has also been demonstrated in another parasitoid wasp Diadromus puichellus (Periquet et a!., 1993), as well as the bees Apis mellifera (Mackensen, 1951;Woyke, 1965) and A. cerana (Woyke, 1979;Hoshiba eta!., 1981) and the sawfly Athalia rosae (Naito & Suzuki, 1991). It appears that single locus CSD also operates in the sawfly Neodiprion nigroscutum (Smith & Wallace, 1971), the fire ant Solenopsis invicta (Hung et a!., 1972(Hung et a!., , 1974Hung & Vinson, 1976;Ross & Fletcher, 1985, 1986 and the stingless bee Melipona quadrifasciata (Camargo, 1979), although data from these species do not strictly exclude a multilocus model (Cook, 1993).…”

Section: Introductionmentioning

confidence: 78%

Experimental tests of sex determination in Goniozus nephantidis (Hymenoptera: Bethylidae)

Cook

1993

Heredity

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Single locus complementary sex determination (CSD) occurs in several species of Hymenoptera. Individuals that carry two different alleles (heterozygotes) are female while those with one and two copies of the same allele (hemizygotes and homozygotes) are haploid and diploid males, respectively. A multilocus model, in which diploids are only male if homozygous at all sex loci, has been proposed for species with regular but not exclusive inbreeding. To date, the only explicit test of the multilocus model is for Nasonia vitripennis. The latter is an inbreeding species in the Infraorder Parasitica and was shown not to conform to the multilocus model. In this study, inbreeding experiments are used to refute single and multilocus sex determination in a second inbreeding hymenopteran, Goniozus nephantidis (Infra-order Aculeata). Single locus CSD has been demonstrated in five other aculeates and G. nephantidis is the first aculeate species shown not to have CSD. The absence of CSD in G. nephantidis is probably a derived condition, favoured by the penalty of increased diploid male production under inbreeding.

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Section: Introductionmentioning

confidence: 78%

Experimental tests of sex determination in Goniozus nephantidis (Hymenoptera: Bethylidae)

Cook

1993

Heredity

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“…These results also point to the genetic independence of the yellow body colour locus from the Apoidea (bee) (Crozier, 1977;Ross & Fletcher, 1985; sex locus. Kukuk & May, 1990;Naito & Suzuki, 1991;Poirié el al., 1992). A summary of these results is given in Table Discussion 3 where the species are grouped at the superfamily level.…”

Section: Resultsmentioning

confidence: 99%

“…Bracon hebetor, Ichneumonoidea (Whiting, 1943), Apis mellifera, Apoidea (Drescher & Rothenbuhler, 1964) and A. cerana indica (Woyke, 1979), Solenopsis invicta, Formicoidea (Ross & Fletcher, 1985) and Athalia rosae ruficornis, Tenthredinoidea (Naito & Suzuki, 1991). In this one-locus multi-allele model, diploid females are considered as being heterozygous for two alleles while males can be obtamed from unfertilized eggs (haploid-hemizygous for one sex allele) or from fertilized eggs (diploid-homozygous for one sex allele).…”

Section: Introductionmentioning

confidence: 99%

Sex determination in the hymenopteran Diadromus pulchellus (Ichneumonidae): validation of the one-locus multi-allele model

Périquet¹,

Hedderwick²,

Agoze

et al. 1993

Heredity

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Males of the hymenopteran Diadromus puichellus are normally haploid, but diploid males can be obtained by inbreeding. Inbred crosses within strains that are polymorphic at the enzymatic loci Pgm-2 and Ao-4 or that differ by a body colour mutation produce heterozygous diploid males in offspring. The genotypic distributions observed in such progeny were compared with expected results under the one-locus sex determination model or the two independent loci model. The results show that only the one-locus multi-allele model fits the data and allow a provisional estimate of 15 sex alleles. These conclusions generalize the case of existence of a single locus to determine sex in Hymenoptera and are discussed at the evolutionary level.

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“…Naito & Suzuki (1991) contrasted the offspring sex ratios of sib-mated and outcrossed broods of this sawfly and showed that half of the former produce a 1:1 ratio of diploid males to females in comparison to none of the latter. Further matings between haploid males and females from families with diploid males yielded the same 1:1 ratio.…”

Section: Jmcookmentioning

confidence: 99%

Sex determination in the Hymenoptera: a review of models and evidence

1993

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The haploid males and diploid females of Hymenoptera have all chromosomes in the same proportions. This rules out most familiar sex-determining mechanisms, which rely on dosage differences at sex determination loci. Two types of model -genic balance and complementary sex determination (CSD) -have been invoked for Hymenoptera. Experimental studies provide no good evidence for genic balance models, which are contradicted by the detection of diploid males in 33 disparate species. Furthermore, recent advances have shown that sex determination in the beststudied diploid animals does not depend on genic balance, removing the original justification for hymenopteran genic balance models. Instead, several Hymenoptera have single-locus CSD. In this system, sex locus heterozyotes are female while homozygotes and hemizygotes are male. Singlelocus CSD does not apply to several inbreeding species and this probably reflects selection against the regular production of diploid males, which are sterile. A multilocus CSD model, in which heterozygosity at any one of several sex loci leads to female development has also been proposed. To date, multilocus CSD has not been demonstrated but several biases against its detection must be considered. CSD can apply to thelytokous races as long as the cytogenetic mechanism permits retention of sex locus heterozygosity. However, some thelytokous races clearly do not have CSD. The distribution of species with and without CSD suggests that this form of sex determination may be ancestral in the Hymenoptera. However, phylogenetic analyses are hindered by the lack of data from several superfamilies and the fact that the internal phylogeny of the Hymenoptera remains controversial.

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Sex Determination in the Sawfly, Athalia rosae ruficornis (Hymenoptera): Occurrence of Triploid Males

Cited by 80 publications

References 0 publications

Experimental tests of sex determination in Goniozus nephantidis (Hymenoptera: Bethylidae)

Experimental tests of sex determination in Goniozus nephantidis (Hymenoptera: Bethylidae)

Sex determination in the hymenopteran Diadromus pulchellus (Ichneumonidae): validation of the one-locus multi-allele model

Sex determination in the Hymenoptera: a review of models and evidence

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