Acoustic Isolation in the Speciation of Mole Crickets1

Nevo, Eviatar; Blondheim, Syril A.

doi:10.1093/aesa/65.4.980

Cited by 12 publications

(9 citation statements)

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“…Males attract females and other males phonotactically for mating and new territorial establishments, respectively. Females choose between the calling males and thus perform mate choice (Nevo and Blondheim 1972), based presumably on some associations between the calling structure, male body size, and soil humidity. Thus, genotype-dependent habitat choice, viability selection in a specific niche, and female mate choice are natural factors of mole cricket biology, making our triplefactor model realistic, albeit not the only conceivable one, to describe the unusual genetic architecture of mole crickets.…”

Section: Discussionmentioning

confidence: 99%

“…Female gryllotalpids select their mates at long range by the quality of the calling song. Positive assortative mating at species level characterizes Gryllotalpa (see Nevo and Blondheim 1972;Broza et al 1998).…”

Section: Evolutionary Biology Of Gryllotalpamentioning

confidence: 99%

“…These two chromosomal species also differ in morphology, ecology, calling songs (Nevo and Blondheim 1972), and cuticular hydrocarbons (Broza et al 1998). The marked difference between their calling songs and the demonstration that responsive females of each karyotype discriminate in favor of homochromosomal males (Nevo and Blondheim 1972) indicate that these are separate species with well-defined barriers to interspecific matings (Broza et al 1998). A third, 2n ϭ 23 chromosomal species belonging to a different African superspecies complex, G. africana, is found in the Arava rift valley in Israel (Kushnir 1952).…”

Section: Evolutionary Biology Of Gryllotalpamentioning

confidence: 99%

“…In Israel there are two chromosomal species of the G. gryllotalpa complex: G. tali (2n ϭ 19) occurs across the country, whereas G. marismortui (2n ϭ 23) is restricted to the highly saline land near the Dead Sea (Kushnir 1952). These two chromosomal species also differ in morphology, ecology, calling songs (Nevo and Blondheim 1972), and cuticular hydrocarbons (Broza et al 1998). The marked difference between their calling songs and the demonstration that responsive females of each karyotype discriminate in favor of homochromosomal males (Nevo and Blondheim 1972) indicate that these are separate species with well-defined barriers to interspecific matings (Broza et al 1998).…”

Section: Evolutionary Biology Of Gryllotalpamentioning

confidence: 99%

“…Following these considerations, we built a model involving all the above-mentioned parameters plus mate choice, that is, sexual selection, which seems to be central in gryllotalpid breeding (Nevo and Blondheim 1972). Notably, habitat choice combined with niche viability selection and positive mate choice represent a combination of Wahlund effect and inbreeding.…”

Section: Common Genetic Structure In Gryllotalpa Tali and Neocurtillamentioning

confidence: 99%

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Extraordinary Multilocus Genetic Organization in Mole Crickets, Gryllotalpidae

et al. 2000

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.— Allozymic diversity at 21 loci was analyzed in 470 individuals of three species of mole cricket superspecies, Gryllotalpa gryllotalpa (two new chromosomal species, G. tali and G. marismortui) and G. africana in Israel, which are distributed along a southward transect of increasing aridity. Two outstanding findings emerged in G. tali and G. marismortui: (1) genetic polymorphism was high but heterozygosity very low, indicating significant deviations from Hardy‐Weinberg expectations; and (2) significant linkage disequilibria at an unprecedented level for outbreeders and remarkable intersite differences. The results may characterize subterranean gryllotalpids worldwide because a single sample of Neocurtilla hexadactyla from Tefé, Amazonia, shows the same features. Significant variation of heterozygote paucity among loci, combined with the biology of the species, rejects the simple explanation of inbreeding or any other single explanatory model. Likewise, direct selection against heterozygotes or specific multilocus associations can explain, but is not necessary nor likely to explain, the observed results in mole crickets. To explain these results, we developed a multiple‐factor mathematical model combining niche viability selection, niche choice, and positive assortative mating. This model involves a special case of Wahlund effect and inbreeding. Simulations based on this model showed that a combination of these three mechanisms may produce the observed distribution of alleles, via selection on a few loci, to affect the entire genome organization.

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Section: Discussionmentioning

confidence: 99%

Section: Evolutionary Biology Of Gryllotalpamentioning

confidence: 99%