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Title
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Variation in flight morphology in a female polymorphic damselfly: intraspecific, intrasexual, and seasonal differences
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Author
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Abstract
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| In aerial animals, flight morphology needs to be designed to allow daily behavioural activities. Within species differences in behaviour can therefore be expected to relate to differences in flight morphology, not only between males and females but also between same-sex members when they use different behavioural strategies. In female polymorphic damselflies, one female morph is considered a male mimic that resembles the males body colour and behaviour (andromorph), whereas the other is dissimilar (gynomorph). Here, we questioned whether males, andromorphs, and gynomorphs of the damselfly Enallagma cyathigerum (Charpentier, 1840) differ in flight morphology, with andromorphs being more similar to males than gynomorphs. In addition, we evaluated whether differences in flight morphology are consistent or whether some morphs are more plastic in response to seasonal environmental fluctuations. Most morphometrics showed similar seasonal plasticity for males and both female morphs, which could only partly be explained from allometry. Consistent with high manoeuvrability in flight, males had broader wings and lower wing loading than females. Variation between female morphs was less pronounced, with no consistent differences in length, aspect ratio, total surface, and wing loading. However, we detected morph-specific differences in shape and width, with andromorphs having broader wings than gynomorphs similarly to males. Chez les animaux qui vivent en milieu aérien, la morphologie du vol doit être organisée de façon à permettre les activités comportementales quotidiennes. Au sein dune même espèce, on peut donc sattendre à ce que les différences de comportement soient reliées à des différences de morphologie du vol, non seulement entre les mâles et les femelles, mais aussi entre les membres dun même sexe qui utilisent des stratégies comportementales diffé... |
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Language
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English
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Source (journal)
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Canadian journal of zoology. - Ottawa, 1951, currens
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Publication
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Ottawa
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2009
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ISSN
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0008-4301
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DOI
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10.1139/Z08-141
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Volume/pages
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87
:1
(2009)
, p. 86-94
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ISI
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000263641700010
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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