Fluctuating asymmetry in paired and umpaired damselfly malesIschnura denticollis (Burmeister) (Odonata: Coenagrionidae)

Córdoba-Aguilar, Alejandro

doi:10.1007/bf02352572

Cited by 18 publications

(16 citation statements)

References 20 publications

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“…Moreover, FA-®tness relations have been shown in other species of damsel¯ies using similar characters (e.g., damsel¯y wing length; Harvey and Walsh 1993;CoÂ rdoba-Aguilar 1995). However, we note that these other studies measured traits on live animals with calipers and did not assess measurement error.…”

Section: Discussionmentioning

confidence: 92%

Fluctuating asymmetry in relation to indices of quality and fitness in the damselfly, Enallagmaebrium (Hagen)

Leung

Forbes

1997

Oecologia

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Fluctuating asymmetry (FA) refers to random deviations from symmetry of otherwise bilaterally symmetric traits. Researchers have hypothesized that FA should be inversely related to individual quality or fitness. In this study, we tested for FA-quality and FA-fitness relations in the damselfly, Enallagmaebrium (Hagen). We used wet mass of an individual as a measure of its quality and longevity as a measure of its fitness. Contrary to predictions, we found no relation between FA and quality or fitness, even after we controlled for possible confounding factors, such as measurement error and inadequate sample size.

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Section: Discussionmentioning

confidence: 92%

Fluctuating asymmetry in relation to indices of quality and fitness in the damselfly, Enallagmaebrium (Hagen)

Leung

Forbes

1997

Oecologia

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“…We analysed female morph frequencies from the literature in seven I. graellsii populations from Iberia (Andrés et al, 2000;Sánchez-Guillén et al, 2005), five I. elegans populations from eastern Europe (Gosden, 2008), four I. senegalensis populations from Japan (Takahashi and Watanable, 2009), four I. fluviatilis populations from Uruguay (Mckee et al, 2005), four I. damula (Johnson, 1964), three I. ramburii (Robertson, 1985;Sirot et al, 2003) and two I. denticollis (Fincke et al, 2005;Có rdoba-Aguilar, 1993) populations from north America (Tables 1 and 2). …”

Section: Colour-morph Frequenciesmentioning

confidence: 99%

The influence of stochastic and selective forces in the population divergence of female colour polymorphism in damselflies of the genus Ischnura

et al. 2011

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Disentangling the relative importance and potential interactions of selection and genetic drift in driving phenotypic divergence of species is a classical research topic in population genetics and evolutionary biology. Here, we evaluate the role of stochastic and selective forces on population divergence of a colour polymorphism in seven damselfly species of the genus Ischnura, with a particular focus on I. elegans and I. graellsii. Colour-morph frequencies in Spanish I. elegans populations varied greatly, even at a local scale, whereas more similar frequencies were found among populations in eastern Europe. In contrast, I. graellsii and the other five Ischnura species showed little variation in colour-morph frequencies between populations. F ST -outlier analyses revealed that the colour locus deviated strongly from neutral expectations in Spanish populations of I. elegans, contrasting the pattern found in eastern European populations, and in I. graellsii, where no such discrepancy between morph divergence and neutral divergence could be detected. This suggests that divergent selection has been operating on the colour locus in Spanish populations of I. elegans, whereas processes such as genetic drift, possibly in combination with other forms of selection (such as negative frequency-dependent selection), appear to have been present in other regions, such as eastern Europe. Overall, the results indicate that both selective and stochastic processes operate on these colour polymorphisms, and suggest that the relative importance of factors varies between geographical regions.

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“…For instance, wing shape and size directly influence the way flying animals disperse in their surrounding environment, and symmetric individuals are expected to fly more effectively due to better aerodynamics when compared to the asymmetric ones (De Block et al 2008). Therefore, the existence/occurrence of high levels of FA in wing shape and size may directly affect foraging activities, escape from predators, and mating behaviors (Córdoba-Aguilar 1995, Bots et al 2009, Stewart & Vodopich 2013.…”

Section: Introductionmentioning

confidence: 97%

The Size But not the Symmetry of the Wings of Eulaema nigrita Lepeletier (Apidae: Euglossini) is Affected by Human-Disturbed Landscapes in the Brazilian Cerrado Savanna

et al. 2015

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Among other human-related activities, habitat loss and fragmentation are currently ranked as the most important environmental features affecting the persistence of animal and plant populations in landscapes, as well as the maintenance of ecological processes and services. Since these processes are also capable of affecting the ontogenetic development of species inhabiting those landscapes, here we measured the wing veins of male Eulaema nigrita Lepeletier (Apidae: Euglossini) bees in order to evaluate whether the bees sampled in agriculture (AG) areas suffer higher fluctuating asymmetry (FA) than those sampled in Cerrado (CE) areas in the Brazilian state of Goiás. We believe that individuals sampled in CE areas would be less asymmetric than those sampled in AG areas, given a potential higher exposure of these specimens to environmental stresses (mostly pesticides). However, we did not observe a significant trend in the FA measures we obtained, although three wing measures were bigger for bees from CE areas. The lack of significant effects of FA may be related to inherent bionomic features of E. nigrita. For instance, given their high individual dispersal abilities, the individuals we analyzed may have developed in different areas than those where they were sampled. Their generalist feeding behavior may also have given them a higher resistance to environmental perturbations, buffering the normal development of immatures even in areas with local high environmental stress. Nonetheless, higher death rates of individuals from anthropic areas may also have killed the developing immatures of E. nigrita before they reached adulthood consequently equalizing our sampled estimates.

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Fluctuating asymmetry in paired and umpaired damselfly malesIschnura denticollis (Burmeister) (Odonata: Coenagrionidae)

Cited by 18 publications

References 20 publications

Fluctuating asymmetry in relation to indices of quality and fitness in the damselfly, Enallagmaebrium (Hagen)

Fluctuating asymmetry in relation to indices of quality and fitness in the damselfly, Enallagmaebrium (Hagen)

The influence of stochastic and selective forces in the population divergence of female colour polymorphism in damselflies of the genus Ischnura

The Size But not the Symmetry of the Wings of Eulaema nigrita Lepeletier (Apidae: Euglossini) is Affected by Human-Disturbed Landscapes in the Brazilian Cerrado Savanna

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