Calling Song Displacement in a Zone of Overlap and Hybridization

Benedix, J. H.; Howard, Daniel J.

doi:10.1111/j.1558-5646.1991.tb02685.x

Cited by 24 publications

(13 citation statements)

References 29 publications

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“…Reproductive character displacement (RCD), a signature of possible reinforcement, can be inferred when divergence of song phenotype between populations is greater in sympatric than allopatric regions (Brown & Wilson, 1956;Butlin, 1987;Schluter, 2000). Although RCD has been found in many other acoustical insects (Hewitt, 1990;Ritchie, Butlin & Hewitt, 1990;Benedix & Howard, 1991;Marshall & Cooley, 2000;Massie & Markow, 2005;Jang & Gerhardt, 2006;Popple, Walter & Raghu, 2008), it has not been confirmed in the carnea-group, despite an ongoing search. A continentally sympatric pair of highly vagile species rarely presents clear regions where allopatry can be proven (Fig.…”

Section: (4) Does Reinforcement Complete Speciation?mentioning

confidence: 99%

Obligatory duetting behaviour in theChrysoperla carnea‐group of cryptic species (Neuroptera:Chrysopidae): its role in shaping evolutionary history

et al. 2013

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An unusual system of communication has evolved in green lacewings of the Chrysoperla carnea-group, triggering rapid proliferation of numerous cryptic species across all of the Northern Hemisphere and large portions of Africa. The system is based on sexually monomorphic, substrate-borne vibrational signals, produced by abdominal oscillation. These low-frequency signals are exchanged between courting individuals in a precise duetting format. The song of each of the more than 20 described species exhibits a unique acoustical phenotype that reproductively isolates the taxon from all other species with which it might come into contact. Here, we review what is known about duetting behaviour in the carnea-group, emphasizing the dominant role that duetting has played in the evolution, ecology, and speciation of the complex. Included are descriptions and discussions of song diversity and its impact on reproductive isolation among species, the genetic basis of interspecific song differences, partitioning of acoustic space among sympatric species, parallel song evolution in allopatric species pairs, and modes of speciation within the complex. We also emphasize the importance of correctly identifying by song all species of the carnea-group that are to be used either in experimental studies or programs of biological control, while acknowledging the continuing relevance of morphology to carnea-group systematics.

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Section: (4) Does Reinforcement Complete Speciation?mentioning

confidence: 99%

Obligatory duetting behaviour in theChrysoperla carnea‐group of cryptic species (Neuroptera:Chrysopidae): its role in shaping evolutionary history

et al. 2013

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“…Several studies across a range of taxa support the expectation that sympatric populations will show phenotypic divergence compared to allopatric populations (Boag & Grant, 1984; Benedix & Howard, 1991; Schluter & McPhail, 1992; Adams & Rohlf, 2000). Recent studies of adaptive divergence have focused on dissecting single traits into their component parts (e.g.…”

Section: Introductionmentioning

confidence: 98%

Does sympatry predict life history and morphological diversification in the Mexican livebearing fish Poeciliopsis baenschi?

Scott

Johnson

2010

Biological Journal of the Linnean Society

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Understanding why some species coexist and others do not remains one of the fundamental challenges of ecology. Although there is evidence to suggest that closely-related species are unlikely to occupy the same habitat because of competitive exclusion, there are many cases where closely-related species do co-occur. Research comparing sympatric and allopatric populations of co-occurring species provides a framework for understanding the role of phenotypic diversification in species coexistence. In the present study, we compare phenotypic divergence between sympatric and allopatric populations of the livebearing fish, Poeciliopsis baenschi. We focus on life-history traits and body shape, comprising two sets of integrated traits likely to diverge in response to varying selective pressures. Given that males and females can express different phenotypic traits, we also test for patterns of divergence among sexes by comparing size at maturity and sexual dimorphism in body shape between males and females in each population type. We take advantage of a natural experiment in western Mexico where, in some locations, P. baenschi co-occur with a closely-related species, Poeciliopsis turneri (sympatric populations) and, in other locations, they occur in isolation (allopatric populations). The results obtained in the present study show that sympatric populations of P. baenschi differed significantly in life-history traits and in body shape compared to their allopatric counterparts. Additionally, males and females showed different responses for size at maturity in sympatric conditions versus allopatric conditions. However, the amount of sexual dimorphism did not differ between sympatric and allopatric populations of P. baenschi. Hence, we conclude that not all traits show similar levels of phenotypic divergence in response to sympatric conditions.

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“…After extensive study (Howard and Furth 1986;Benedix and Howard 1991;Gregory and Howard 1993;Doherty and Howard 1996;Veech et al 1996), the only factor we have been able to identify that isolates the two species is conspecific sperm precedence Gregory and Howard 1994). Although females of both species paired exclusively with heterospecific males produce fertile hybrid offspring , when females of both species are mated to a conspecific male and a heterospecific male, heterospecific sperm rarely fertilize eggs Gregory and Howard 1994).…”

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Conspecific Sperm Precedence Is an Effective Barrier to Hybridization Between Closely Related Species

et al. 1998

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Abstract.-Conspecific sperm precedence is widespread in animals, appears to evolve rapidly, and is thought to have the potential to prevent hybridization between closely related species. However, to date no study has tested the isolating potential of such a barrier in mixed populations of two taxa under conditions in which other potential barriers to gene flow are controlled for or are prevented from operating. We tested the isolating potential of conspecific sperm precedence in the ground crickets Allonemobius fasciatus and A. socius in population cage experiments in which the frequency of the two species was varied. Despite the observation of abundant interspecific matings, the proportions of hybrid progeny were low and differed statistically from the proportions expected in the absence of conspecific sperm precedence. The results demonstrate that conspecific sperm precedence can severely limit gene flow between closely related species, even when one species is less abundant than the other. Key words.s-Allonemobius, barrier to fertilization, conspecific sperm precedence, cricket, hybridization, reproductive isolation, speciation.Received July 15, 1997. Accepted January 28, 1998 Postmating but prezygotic barriers to fertilization have begun to attract wide attention among evolutionists, as a large number of recent studies suggest that such barriers arise quickly and may represent the primary isolating barrier between many species of animals

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Calling Song Displacement in a Zone of Overlap and Hybridization

Cited by 24 publications

References 29 publications

Obligatory duetting behaviour in theChrysoperla carnea‐group of cryptic species (Neuroptera:Chrysopidae): its role in shaping evolutionary history

Obligatory duetting behaviour in theChrysoperla carnea‐group of cryptic species (Neuroptera:Chrysopidae): its role in shaping evolutionary history

Does sympatry predict life history and morphological diversification in the Mexican livebearing fish Poeciliopsis baenschi?

Conspecific Sperm Precedence Is an Effective Barrier to Hybridization Between Closely Related Species

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