Strong Asymmetry in the Relative Strengths of Prezygotic and Postzygotic Barriers Between Two Damselfly Sister Species

Sánchez-Guillén, Rosa Ana; Wellenreuther, Maren; Rivera, Adolfo Cordero

doi:10.1111/j.1558-5646.2011.01469.x

Cited by 68 publications

(150 citation statements)

References 107 publications

(162 reference statements)

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“…Oviposition containers were made of plastic boxes that were covered with humid filter paper (see Sánchez‐Guillén, Wellenreuther, & Cordero‐Rivera, 2012 for details).…”

Section: Methodsmentioning

confidence: 99%

Alternative reproductive strategies and the maintenance of female color polymorphism in damselflies

Sánchez-Guillén

Wellenreuther

Chávez‐Ríos

et al. 2017

Ecology and Evolution

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Genetic polymorphisms are powerful model systems to study the maintenance of diversity in nature. In some systems, polymorphisms are limited to female coloration; these are thought to have arisen as a consequence of reducing male mating harassment, commonly resulting in negative frequency‐dependent selection on female color morphs. One example is the damselfly Ischnura elegans, which shows three female color morphs and strong sexual conflict over mating rates. Here, we present research integrating male tactics, and female evolutionary strategies (female mating behavior and morph‐specific female fecundity) in populations with different morph‐specific mating frequencies, to obtain an understanding of mating rates in nature that goes beyond the mere measure of color frequencies. We found that female morph behavior differed significantly among but not within morphs (i.e., female morph behavior was fixed). In contrast, male tactics were strongly affected by the female morph frequency in the population. Laboratory work comparing morph‐specific female fecundity revealed that androchrome females have lower fecundity than both of the gynochrome female morphs in the short term (3‐days), but over a 10‐day period one of the gynochrome female morphs became more fecund than either of the other morphs. In summary, our study found sex‐specific dynamics in response to different morph frequencies and also highlights the importance of studying morph‐specific fecundities across different time frames to gain a better understanding of the role of alternative reproductive strategies in the maintenance of female‐limited color polymorphism.

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“…Oviposition containers were made of plastic boxes that were covered with humid filter paper (see Sánchez‐Guillén, Wellenreuther, & Cordero‐Rivera, 2012 for details).…”

Section: Methodsmentioning

confidence: 99%

Alternative reproductive strategies and the maintenance of female color polymorphism in damselflies

Sánchez-Guillén

Wellenreuther

Chávez‐Ríos

et al. 2017

Ecology and Evolution

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“…Studies on niche diversification have primarily concentrated on adults of the genus Calopteryx (Wellenreuther et al 2010a;Wellenreuther et al 2012), Enallagma (McPeek et al 1996McPeek and Peckarsky 1998;Brown et al 2000;Turgeon and McPeek 2002;Siepielski et al 2010) and Ischnura (Wellenreuther et al 2011;S anchez-Guill en et al 2012), while a lot less is known about larval ecology. Comparatively, more attention has been given to the role of nonecological selection on reproductive traits (see Box 2 for a summary of damselfly reproductive biology), including in Argia (Paulson 1974), Calopteryx (Svensson et al 2007;Svensson et al 2010Svensson et al , 2014Tynkkynen et al 2008b;Wellenreuther et al 2010a,b), Enallagma (Robertson and Patterson 1982;McPeek 1995;McPeek et al 2008McPeek et al , 2009McPeek et al , 2011, Ischnura (Paulson 1974;Monetti et al 2002;S anchez-Guill en et al 2005S anchez-Guill en et al , 2011aS anchez-Guill en et al 2012S anchez-Guill en et al , 2013a and Nehalenia (Van Gossum et al 2007). Given that the aim of this study was to examine the relative importance of ecological and nonecological forces in fuelling species diversity in damselflies, only those genera for which sufficient information was available for both categories were selected.…”

Section: Criteria For Genera Selection and Phylogenetic Relationshipsmentioning

confidence: 99%

Non-adaptive radiation in damselflies

Wellenreuther¹

2016

2016 International Congress of Entomology

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Adaptive radiations have long served as living libraries to study the build-up of species richness; however, they do not provide good models for radiations that exhibit negligible adaptive disparity. Here, we review work on damselflies to argue that nonadaptive mechanisms were predominant in the radiation of this group and have driven species divergence through sexual selection arising from male-female mating interactions. Three damselfly genera (Calopteryx, Enallagma and Ischnura) are highlighted and the extent of (i) adaptive ecological divergence in niche use and (ii) nonadaptive differentiation in characters associated with reproduction (e.g. sexual morphology and behaviours) was evaluated. We demonstrate that species diversification in the genus Calopteryx is caused by nonadaptive divergence in coloration and behaviour affecting premating isolation, and structural differentiation in reproductive morphology affecting postmating isolation. Similarly, the vast majority of diversification events in the sister genera Enallagma and Ischnura are entirely driven by differentiation in genital structures used in species recognition. The finding that closely related species can show negligible ecological differences yet are completely reproductively isolated suggests that the evolution of reproductive isolation can be uncoupled from niche-based divergent natural selection, challenging traditional niche models of species coexistence.

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“…This idea makes perfect sense for Enallagma and other species that show no precopulatory courtship, and where males simply chase females due to a poor ability to recognize conspecifics. That both male and female structures can determine the strength of species isolation has also found support in studies of interspecific crosses between Ischnura graellsii and I. elegans (Sánchez-Guillén et al 2012). Paradoxically, the strength of these structures was not the same for the combination of interspecific crosses (I. graellsi females and I. elegans males mating were more successful than the opposite combination; Sánchez-Guillén et al 2012).…”

Section: Discussionmentioning

confidence: 83%

“…That both male and female structures can determine the strength of species isolation has also found support in studies of interspecific crosses between Ischnura graellsii and I. elegans (Sánchez-Guillén et al 2012). Paradoxically, the strength of these structures was not the same for the combination of interspecific crosses (I. graellsi females and I. elegans males mating were more successful than the opposite combination; Sánchez-Guillén et al 2012). Furthermore, the species isolation mechanism would not seem convenient for species whose males court females, as such precopulatory courtship may actually serve as the mechanism to discriminate heterospecific males or females as has been shown in Calopteryx species (Waage 1979;Svensson et al 2007).…”

Section: Discussionmentioning

confidence: 83%

Allometry of Male Grasping Apparatus in Odonates Does Not Suggest Physical Coercion of Females

et al. 2014

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Male abdominal grasping apparatus that are used to secure a female prior, during and after mating, are widespread in arthropods. The scarce evidence regarding its selective regime suggests that they are male adaptations to circumvent female mating decisions, as predicted by the sexual conflict hypothesis. A recent discussion regarding this way of selection suggests that, similar to weapons and traits that have to do with physical endurance, grasping apparatus should show hyperallometry (proportionally larger compared to body size) as an indication of selection towards increased size. We have tested this idea by measuring the length, width and area of the grasping apparatus of five dragonfly species (Anax junius, Rhionaeschna multicolor, Dythemis nigrescens, D. sterilis and Phyllogomphoides pacificus). We used two proxies of body size (wing and body length). Our measures did not indicate any pattern of hyperallometry. Thus, the grasping apparatus in these animals does not seem to be positively selected for increased size as would be expected if they were forcing females to mate. Given this, we discuss three other explanations for the maintenance of the grasping apparatus in odonates: 1) a firm grip that secures the tandem and mating position; 2) courtship devices subject to female choice; and, 3) isolation structures that mechanically prevent interspecific matings. The first hypothesis, however, could not J Insect Behav (2015) 28:15-25 explain the highly elaborated and species specific morphology of grasping apparatus in these animals. Support for the second hypothesis comes from the fact that odonate females have mechanoreceptor sensilla embedded in their mesostigmal plates (the place grabbed by the grasping apparatus). For the third hypothesis, coevolutionary patterns in morphology in the grasping apparatus and mesostigmal plates in some Zygoptera can also be used as support.

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Strong Asymmetry in the Relative Strengths of Prezygotic and Postzygotic Barriers Between Two Damselfly Sister Species

Cited by 68 publications

References 107 publications

Alternative reproductive strategies and the maintenance of female color polymorphism in damselflies

Alternative reproductive strategies and the maintenance of female color polymorphism in damselflies

Non-adaptive radiation in damselflies

Allometry of Male Grasping Apparatus in Odonates Does Not Suggest Physical Coercion of Females

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