Results 81 to 90 of about 7,651 (208)

Parthenogenesis did not consistently evolve in insular populations of Ischnura hastata (Odonata, Coenagrionidae) [PDF]

, 2017
1. The evolutionary advantages that have driven the evolution of sex are still very much debated, and a number of benefits of parthenogenesis over sexual reproduction have been proposed.
Almbro, Archetti, Baker, Bell, Burnham, Burnham, Cheptou, Cook, Cordero-Rivera, Cordero-Rivera, Cuéllar, Degen, Dijkstra, Dunkle, Fincke, Fincke, Garrison, Geijskes, GenStat, Gerritsen, Glesener, Jiménez-Cortés, Jordan, Keightley, Kondrashov, Lebreton, Lorenzo-Carballa, Lorenzo-Carballa, Lorenzo-Carballa, Massol, Matsuura, Maynard Smith, Morbey, Naraoka, Peck, Peck, Ridley, Robinson, Rowe, Schwander, Suomalainen, Sánchez-Guillén, Teder, Valen, Vandel, Vrijenhoek, West, White   +47 more
core   +1 more source

Influence of Fluvial Structure on Benthic Macroinvertebrates in a Restored Meandering River, Geul Basin, Netherlands

Ecohydrology, Volume 19, Issue 1, January‐February 2026.
ABSTRACT Benthic macroinvertebrates are indicators of water quality and riparian ecosystem health. Their abundance and distribution in streams are associated with river basin environmental factors, including stream biotic and abiotic fluvial processes. We examined benthic macroinvertebrate diversity and abundance in relation to large wood (LW) and pool‐
Markéta Hauferová, Paul F. Hudson, Achim Häger   +2 more
wiley   +1 more source

Modelling Environmental Driving Factors of Macroinvertebrate Distributions in Mountainous Rivers Using Partial Least Squares Structural Equation Modelling: A Case Study from Lai Chi Wo, Hong Kong

Ecohydrology, Volume 19, Issue 1, January‐February 2026.
ABSTRACT The interaction between macroinvertebrates and environmental factors has long been a question of great interest across a wide range of fields. However, our understanding of the impacts of environmental factors on macroinvertebrates remains vague.
Zhaofeng Han, Yi Lu, Ji Chen, Qian Xu, Mervyn R. Peart, Frederick Y. S. Lee, Billy C. H. Hau, Winnie W. Y. Law   +7 more
wiley   +1 more source

Primer Frenguelliidae (Insecta: Odonata) del Eoceno de Río Pichileufú, Patagonia, Argentina [PDF]

, 2017
Se describe un nuevo género, Treintamilun gen. nov., basado en Treintamilun vuelvenlucha sp. nov. de la localidad de Río Pichileufú (Luteciano), Provincia de Río Negro, Patagonia, Argentina. El nuevo género se asigna a Frenguelliidae.
Petrulevicius, Julian Fernando
core  

Environmental noise reduces predation rate in an aquatic invertebrate [PDF]

, 2017
Noise is one of a wide range of disturbances associated with human activities that have been shown to have detrimental impacts on a wide range of species, from montane regions to the deep marine environment.
AAYH Chan, Alison M. Dunn, AN Popper, BM Siemers, BMB Bolker, C Mora, Christopher Hassall, CR Kight, CS Holling, CW Clark, D Dudgeon, D Goertzen, D Karp, D Reby, D Rogers, DJ Thompson, DJ Thompson, DJ Thompson, DM Johnson, DT Blumstein, EK Blesdoe, EL Morley, FI Martins, G Shannon, Giovanna Villalobos-Jiménez, H Slabbekoorn, H Slabbekoorn, HP Kunc, I-C Chen, IK Voellmy, J Purser, J Vasserot, JB Wallace, JTA Dick, K Schoenly, KDB Dijkstra, KM Parris, L Fahrig, LS Weilgart, MA McPeek, MA Wale, MA Wale, Millennium Ecosystem Assessment, N Aguilar de Soto, NG Taylor, OE Sala, RA Fuller, RA Paterson, RR Fay, SA Juliano, SD Simpson, SW Townsend, TM Knight, W Halfwerk, WHO, WT Fitch, Y Watari   +56 more
core   +1 more source

Operational sex ratio bias due to sex‐specific cohort splitting in response to predation

Ecosphere, Volume 17, Issue 1, January 2026.
Abstract The operational sex ratio (OSR), that is, the local ratio of fertilizable females to sexually active males at any given time, is of key importance for the strength of sexual selection and the reproduction of populations. We hypothesize that sex‐specific cohort splitting, that is, when one sex mostly metamorphoses while the other mostly enters ...
Oliver Miler, František Marec, Dietmar Straile   +2 more
wiley   +1 more source

Intraspecific predation in immature Coenagrion puella (L.): a switch in food selection? (Zygoptera: Coenagrionidae) [PDF]

, 1997
Observations on cannibalism in outdoor insectaries are presented. The behavioural interactions are described. Cannibalism (in both sexes) occurred only during periods of cold weather.
Kröger, C., Rolff, Jens
core   +1 more source

Reliance on blue, green, and brown energy channels drives a shift in the trophic position of riparian spiders

Ecology, Volume 107, Issue 1, January 2026.
Abstract Understanding the mechanisms shaping food chain length (FCL) has long been central to food web ecology. FCL is a key determinant of stability, energy flow efficiency, and biodiversity maintenance, but there is an ongoing debate about its underlying drivers.
Grégoire Saboret, Bastiaan J. W. Drost, Carmen Kowarik, Maja Ilić, Martin M. Gossner, Carsten J. Schubert   +5 more
wiley   +1 more source

An observation on the Odonata fauna of the Asansol-Durgapur Industrial Area, Burdwan, West Bengal, India

Journal of Threatened Taxa, 2016
The present investigation was undertaken as a pilot study to examine the diversity, occurrence and distribution pattern of dragonflies and damselflies (Odonata) from the selected study sites of the Asansol-Durgapur industrial area of Burdwan District of ...
Amar Kumar Nayak, Utpal Singha Roy
doaj   +1 more source

Emergence patterns of Coenagrion hastulatum (Charpentier) in northern Germany (Zygoptera: Coenagrionidae) [PDF]

, 1997
The emergence patterns were followed closely at a pond E of Braunschweig. The emergence period lasted 24 days and the EM50 was reached after 11 days. Due to its emergence phenology. C. hastulatum is classified as a summer species.
Befeld, S., Katzur, K., Lepkojus, S., Rolff, Jens   +3 more
core   +1 more source