Results 211 to 220 of about 16,862 (239)
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Biological Journal of the Linnean Society, 1985
Dimorphism of tergal wing-folding spicule patches and wing-toiletry fringes accompanies wing dimorphism in the ladybird, Rhyzobius litura. Such dimorphism of ‘ancillary' structures is of rare occurrence in the Coleoptera; other instances are discussed. Data are presented concerning the incidence of long and short winged individuals of R.
Peter Hammond
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Dimorphism of tergal wing-folding spicule patches and wing-toiletry fringes accompanies wing dimorphism in the ladybird, Rhyzobius litura. Such dimorphism of ‘ancillary' structures is of rare occurrence in the Coleoptera; other instances are discussed. Data are presented concerning the incidence of long and short winged individuals of R.
Peter Hammond
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Variations in calling behaviour of wing dimorphic male crickets
Ecological Entomology, 2022Abstract A trade‐off between flight and reproduction has been well studied in wing dimorphic female insects but less attention has been given to this trade‐off in males ...
Yang Zeng +2 more
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Morph‐specific life‐history correlations in a wing‐dimorphic water strider
Journal of Evolutionary Biology, 2021Abstract Life‐history theory predicts a negative correlation between reproduction and survival because individuals differ in their investment in early reproduction at the expense of survival. However, life‐history trade‐offs can be masked when individual differences in resource allocation are smaller than those in
Hyoseul Hyun, Chang S. Han
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Natural Selection and Sexual Size Dimorphism in Red-Winged Blackbirds
Evolution, 1994Patterns of overwinter mortality in the sexually dimorphic red-winged blackbird (Agelaius phoeniceus) were examined to test the predictions of the sexual-selection hypothesis that male size is limited by directional selection favoring small males and that female size is maintained by stabilizing selection wherein extreme phenotypes experience higher ...
Patrick J, Weatherhead, Robert G, Clark
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Wing Dimorphism in Field Crickets (Orthoptera: Gryllidae: Gryllus)
Annals of the Entomological Society of America, 1986Adult Gryllus are either short-winged (hind wings [HW] shorter than fore wings [FW]: HW/FW 1). Short-winged individuals are flightless, whereas long-winged individuals generally can fly. Hind wings are not shed after flight. Of five species occurring in peninsular Florida, G. ovisopis Walker is always short-winged (mean value of HW/FW ratio = 0.5), G.
Thomas J. Walker, John M. Sivinski
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Population Ecology, 1994
AbstractThe hypothesis that the morphological, physiological, and behavioral traits comprising the migratory syndrome in insects are genetically correlated through pleiotropic effects of genes controlling the titre of a common hormonal determinant is explored. Evidence that juvenile hormone (JH) influences the component traits of the migratory syndrome
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AbstractThe hypothesis that the morphological, physiological, and behavioral traits comprising the migratory syndrome in insects are genetically correlated through pleiotropic effects of genes controlling the titre of a common hormonal determinant is explored. Evidence that juvenile hormone (JH) influences the component traits of the migratory syndrome
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A mathematical model for wing dimorphism in maleCardiocondyla ants
Journal of Ethology, 1994Several species ofCardiocondyla ants have dimorphic males: wingless (ergatoid) and winged (alate) males, while otherCardiocondyla species includingC. nuda have only wingless males. We made an evolutionarily stable strategy model for explaning the male polymorphism and the ratios of wingless males in the genusCardiocondyla. Wingless males emerge earlier
Nobuyuki Tsuji +2 more
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Biased dispersal ofMetrioptera bicolor, a wing dimorphic bush‐cricket
Insect Science, 2017AbstractIn the highly fragmented landscape of central Europe, dispersal is of particular importance as it determines the long‐term survival of animal populations. Dispersal not only secures the recolonization of patches where populations went extinct, it may also rescue small populations and thus prevent local extinction events.
Ina Monika Margret, Heidinger +3 more
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Oecologia, 1987
Short-winged forms of the bug, Jadera aeola, were discovered during the late dry season at a study site on Barro Colorado Island, Panama. They were smaller than long-winged adults not only in elytron and hindwing sizes but also in head, thorax, rostrum and hind femur dimentions. When newly emerged adults were kept under natural photothermal conditions,
S, Tanaka, H, Wolda
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Short-winged forms of the bug, Jadera aeola, were discovered during the late dry season at a study site on Barro Colorado Island, Panama. They were smaller than long-winged adults not only in elytron and hindwing sizes but also in head, thorax, rostrum and hind femur dimentions. When newly emerged adults were kept under natural photothermal conditions,
S, Tanaka, H, Wolda
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Sexual Dimorphism CURE: Exploring Melanized Wing Patterns of Pieridae Butterflies
2022Teach a Course-based Undergraduate Research Experience (CURE) using digitized natural history collections data to test hypotheses on sexually dimorphic wing melanization patterns of Pieris rapae butterflies. This inclusive CURE can be implemented in in-person, online, and hybrid formats, synchronously or asynchronously, and requires only student access
Trillo, Paula +3 more
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