REPRODUCTIVE CHARACTER DISPLACEMENT IN
            <i>CALOPTERYX</i>
            (ODONATA: CALOPTERYGIDAE)

Waage, Jonathan K.

doi:10.1111/j.1558-5646.1979.tb04667.x

Cited by 67 publications

(10 citation statements)

References 24 publications

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“…Other odonate genera (e.g., Calopteryx , Hetaerina , and Plathemis ) have wing markings that are involved in both species recognition and various types of intraspecific sexual selection (e.g., Koenig and Albano 1987; Koenig 1991; Grether 1996; Svensson et al 2006). For example, Calopteryx damselflies in both North America and Eurasia show character displacement of wing marking patterns in areas where multiple species occur sympatrically, which suggests that aspects of these marking patterns are used to discriminate conspecifics from heterospecifics (Waage 1975, 1979; Tynkkynen et al 2004; Svensson et al 2007). In addition, aspects of these wing markings are under sexual and countervailing natural selection pressures, which can cause populations within species to diverge in aspects of these marking patterns as well (e.g., Svensson et al 2004).…”

Section: Discussionmentioning

confidence: 99%

Species Recognition and Patterns of Population Variation in the Reproductive Structures of a Damselfly Genus

et al. 2010

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The selection pressures imposed by mate choice for species identity should impose strong stabilizing selection on traits that confer species identity to mates. Thus, we expect that such traits should show nonoverlapping distributions among closely related species, but show little to no variance among populations within a species. We tested these predictions by comparing levels of population differentiation in the sizes and shapes of male cerci (i.e., the clasper structures used for species identity during mating) of six Enallagma damselfly species. Cerci shapes were nonoverlapping among Enallagma species, and five of six Enallagma species showed no population variation across their entire species ranges. In contrast, cerci sizes overlapped among species and varied substantially among populations within species. These results, taken with previous studies, suggest that cerci shape is a primary feature used in species recognition used to discriminate conspecific from heterospecifics during mating.

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Section: Discussionmentioning

confidence: 99%

Species Recognition and Patterns of Population Variation in the Reproductive Structures of a Damselfly Genus

et al. 2010

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“…The sexually isolating trait may be a morphological or signaling system character. It may also simply be the species discrimination ability of individuals; i.e., the mechanism (morphological, behavioral, or otherwise) by which an individual recognizes another individual as either a conspecific or a heterospecific (Waage 1979;Butlin 1989;. The process that leads to displacement, selection against hybridization, is known as reinforcement.…”

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confidence: 99%

Lack of Calling Song Displacement Between Two Closely Related Ground Crickets

1996

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Thorough examinations of purported cases of reproductive character displacement are critical for reaching an understanding of the role of reinforcement in the evolution of reproductive barriers between closely related species. In this paper, we report the results of an extensive investigation of male calling song variation in the ground crickets, Allonemobius fasciatus and A. socius. Contrary to the results of an earlier study, we uncovered little evidence of displacement of songs in areas of overlap. We discuss explanations for the lack of displacement as well as for the discrepancies between the results of the current study and those of the earlier study.

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“…Further evidence of reinforcement’s role in divergence between sympatric and allopatric populations can be gleaned from systems that show variation in selection against hybridization. In these systems, sympatric populations of a given species that experience stronger selection against hybridization show more pronounced trait divergence (and greater reproductive isolation) from heterospecifics—and ancestral allopatric populations—than those sympatric populations with weaker selection against hybridization ( Waage 1975 , 1979 ; Pfennig and Pfennig 2005 ). Evaluating whether trait divergence in pairwise contrasts between sympatric populations versus allopatric populations predicts reproductive isolation between them would test the efficacy of reinforced traits in reproductive isolation.…”

Section: How Might the Hypothesis That Reinforcement Initiates Speciamentioning

confidence: 99%

Reinforcement as an initiator of population divergence and speciation

Pfennig

2016

Curr Zool

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When hybridization results in reduced fitness, natural selection is expected to favor the evolution of traits that minimize the likelihood of hybridizing in the first place. This process, termed reinforcement (or, more generally, reproductive character displacement), thereby contributes to the evolution of enhanced reproductive isolation between hybridizing groups. By enhancing reproductive isolation in this way, reinforcement plays an important role in the final stages of speciation. However, reinforcement can also contribute to the early stages of speciation. Specifically, because selection to avoid hybridization occurs only in sympatric populations, the unfolding of reinforcement can lead to the evolution of traits in sympatric populations that reduce reproduction between conspecifics in sympatry versus those in allopatry. Thus, reinforcement between species can lead to reproductive isolation—and possibly speciation—between populations in sympatry versus those in allopatry or among different sympatric populations. Here, I describe how this process can occur, the conditions under which it is most likely to occur, and the empirical data needed to evaluate the hypothesis that reinforcement can initiate speciation.

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REPRODUCTIVE CHARACTER DISPLACEMENT IN CALOPTERYX (ODONATA: CALOPTERYGIDAE)

Cited by 67 publications

References 24 publications

Species Recognition and Patterns of Population Variation in the Reproductive Structures of a Damselfly Genus

Species Recognition and Patterns of Population Variation in the Reproductive Structures of a Damselfly Genus

Lack of Calling Song Displacement Between Two Closely Related Ground Crickets

Reinforcement as an initiator of population divergence and speciation

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