Results 11 to 20 of about 3,565 (228)
Male coercion and convenience polyandry in a calopterygid damselfly [PDF]
Copulation in odonates requires female cooperation because females must raise their abdomen to allow intromission. Nevertheless in Calopteryx haemorrhoidalis haemorrhoidalis (Odonata) males commonly grasp ovipositing females and apparently force copulations.
A. Cordero, José Á. Andrés
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Nonadaptive radiation in damselflies [PDF]
AbstractAdaptive 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 ...
Maren Wellenreuther+2 more
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Flight of the dragonflies and damselflies [PDF]
This work is a synthesis of our current understanding of the mechanics, aerodynamics and visually mediated control of dragonfly and damselfly flight, with the addition of new experimental and computational data in several key areas. These are: the diversity of dragonfly wing morphologies, the aerodynamics of gliding flight, force generation in flapping
Richard J. Bomphrey+3 more
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The dragonflies and damselflies (Odonata) of Angola [PDF]
Prior to 2012, only 158 species of Odonata were known from Angola. Surveys in 2012 and 2013 added 76 species and two further additions in 2016 brought the national total to 236 species. We provide a revised checklist with taxonomic notes and discuss the history of research, the biogeography of the fauna, and the potential for further discoveries.
Kipping,Jens+3 more
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Background Insects can resist parasites using the costly process of melanotic encapsulation. This form of physiological resistance has been studied under laboratory conditions, but the abiotic and biotic factors affecting resistance in natural insect ...
Robb Tonia, Nagel Laura, Forbes Mark R
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Odonata of Maludam National Park, Sarawak, Malaysia
This paper presents records of Odonata collected in July 2012 in Maludam National Park, Sarawak, Malaysia. A total of 48 species from nine families were collected. Three species were new to science, one of which has already been described as Prodasineura
Rory A. Dow+2 more
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A study was carried out to assess the Odonata fauna of Kuldiha Wildlife Sanctuary, Odisha, eastern India from November 2012 to October 2013. During the study a total of 54 species of odonates including 37 species of dragonflies (Anisoptera) and 17 ...
Subrat Debata, Kedar Kumar Swain
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Physicochemical Properties as Driver of Odonata Diversity in Oil Palm Waterways
Large-scale oil palm agriculture has caused deforestation in the tropics, but also degrades stream water quality and reduces aquatic biodiversity.
Muhamad Ishak+7 more
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Interactions were studied among juvenile narrow-claw crayfish, Astacus leptodactylus (Eschscholtz), and common water frog, Rana esculenta (L.), tadpoles and common blue damselfly, Enallagma cyathigerum (Charpentier), larvae during rearing under ...
Ulikowski Dariusz+4 more
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The paper presents new remarkable records of selected rare and uncommon Odonata species found in the Kaliningrad Oblast based primarily on our surveys conducted since 2007.
Nazar A. Shapoval+2 more
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