Results 61 to 70 of about 7,751 (222)
Flooding affects fluctuating asymmetry but not growth of a riparian orbweaving spider
In a mesocosm experiment we assessed the impact of flood on aquatic insect emergence and on spider development using geometric morphometric analysis of fluctuating asymmetry. We observed 45% higher emergence in flooded mesocosm throughout the season. Spiders did not grow bigger but exhibited ~15% lower fluctuating asymmetry than in controls.
Stephane Mutel +10 more
wiley +1 more source
The first fossil Perilestidae (Odonata: Zygoptera) from mid-Cretaceous Burmese amber [PDF]
postprin
Chang, S +4 more
core +3 more sources
Cost of parasite exposure depends on host ontogeny 寄生接觸的代價依賴於宿主發育階段
The cost of parasite exposure varies across host developmental stages, demonstrating that ontogeny influences the expression of non‐consumptive effects (NCEs). Mite exposure resulted in consumptive effects in fly eggs and NCEs in early‐stage pupae; mite longevity was comparable when provisioned with pupae or water but increased when provisioned with ...
Lisa R. MacLeod +2 more
wiley +1 more source
In Japan, two closely-related damselflies, Mnais costalis Selys, 1869 (Odonata: Calopterygidae) and M. pruinosa Selys-Longchamps (Odonata: Calopterygidae), 1853, coexist, and they exhibit geographic variations in wing color, body size, and habitat ...
Hisashi Okuyama +3 more
doaj +1 more source
Fish and macroinvertebrates in lowland drainage canals with and without grass carp [PDF]
Diploid grass carp (Ctenopharyngodon idella L.) were introduced to a lowland Waikato drainage canal at an initial density of 40-80 kg ha -1(83-167 fish ha -1) to control aquatic macrophytes and improve water flow.
Bannon, Henry James +2 more
core +1 more source
Hypotheses for the Adaptive Maintenance of Phenotypic Polymorphisms
Phenotypic polymorphisms offer easily observable diversity ideal for empirical and theoretical exploration, but developing and comparing hypotheses for the adaptive maintenance of polymorphism can be a challenge. Here, we propose a framework categorizing polymorphisms based on (i) one of five distinct types of maintenance selection and (ii) the context
Jay J. Falk +2 more
wiley +1 more source
Current Protections and Future Threats to Say's Spiketail Habitat in the Southeastern USA
Dragonflies and damselflies are important indicators of ecological integrity and environmental quality but remain underrepresented in conservation efforts, in part due to a lack of quantitative information regarding their habitat requirements. Species distribution models (SDMs) can facilitate conservation planning by allowing researchers to estimate ...
J. Matthew Flenniken +2 more
wiley +1 more source
Finding Isolated Aquatic Habitat: Can Beggars Be Choosers?
In a two-year field study across 58 isolated wetlands in Texas (USA), we examined whether odonate (Insecta: Odonata) assemblages were structured by local environmental filters or instead simply reflected the use of any available water in this semi-arid ...
Danielle M. Husband, Nancy E. McIntyre
doaj +1 more source
Calopteryx Damselfly Dispersions Arising from Multiscale Responses to Landscape Structure
Using spatially explicit simulation models, we explored the extent to which fine-scale (i.e., meters to tens of meters) movement behaviors could be used to predict broader scale patterns of distribution on heterogeneous landscapes.
Ian Jonsen, Philip D. Taylor
doaj +1 more source
Diversity of UV Reflection Patterns in Odonata
Dragonflies and damselflies (Odonata) are large-eyed diurnal insects that exhibit a variety of color patterns on their wings and/or bodies. Because Odonata can perceive light with wavelengths extending from ultraviolet (UV) to red, the color patterns ...
Ryo Futahashi
doaj +1 more source

