Results 41 to 50 of about 7,800 (253)

Immune function and parasite resistance in male and polymorphic female Coenagrion puella [PDF]

, 2006
Background: Colour polymorphisms are widespread and one of the prime examples is the colour polymorphism in female coenagrionid damselflies: one female morph resembles the male colour (andromorph) while one, or more, female morphs are described as ...
Joop, G., Mitschke, A., Rolff, J., Siva-Jothy, M.T.   +3 more
core   +2 more sources

Nuevos Zygoptera y Anisoptera (Insecta: Odonata) en el Cretácico inferior de España

Estudios Geologicos, 1993
El estudio de nuevos insectos cretácicos hallados en los yacimientos de calizas litográficas españoles ha dado como resultado el reconocimiento de tres nuevas formas de odonatos (Insecta, Odonata).
A. Nel, X. Martínez-Delclos
doaj   +1 more source

Climate Change Is Driving Shifts in Dragonfly Species Richness across Europe via Differential Dynamics of Taxonomic and Biogeographic Groups

Diversity, 2022
Understanding how changes in species richness pattern correlate with range changes in different taxonomic and biogeographic groups is important for conservation because it allows for generalizations about which species are at greatest risk.
Kent Olsen, Jens-Christian Svenning, Henrik Balslev   +2 more
doaj   +1 more source

Spatiotemporal Dynamics of Non-Ecological Speciation in Rubyspot Damselflies (Hetaerina spp.). [PDF]

Mol Ecol
ABSTRACT Non‐ecological speciation is a common mode of speciation, which occurs when allopatric lineages diverge in the absence of pronounced ecological differences. Yet, relative to other speciation mechanisms, non‐ecological speciation remains understudied.
Patterson C, Brennan A, Cowling H, González-Rodríguez A, Grether GF, Mendoza Cuenca L, Springer M, Vega-Sánchez YM, Drury J.   +8 more
europepmc   +2 more sources

Historical changes in the phenology of British Odonata are related to climate [PDF]

, 2007
Responses of biota to climate change take a number of forms including distributional shifts, behavioural changes and life history changes. This study examined an extensive set of biological records to investigate changes in the timing of life history ...
Ando H, Aoki T, Bechly G, Butterfield JEL, Cannell MGR, Carle FL, Coope GR, Coope GR, Corbet PS, Corbet PS, Corbet PS, Corbet PS, Corbet PS, Davis MB, Fleming RA, Hilfert-Ruppell D, Hostetler SW, Jodicke R, Merritt R, Merritt R, Norling U, Norling U, Ott J, Pilgrim JM, Pritchard G, Pritchard G, Pritchard G, Sawchyn WW, Sawchyn WW, Sawchyn WW, Sokal RR, Stearns SC, Sternberg K, Sternberg K, Trueman JWH   +34 more
core   +1 more source

An updated list of Odonata of southwestern Bangladesh

Journal of Threatened Taxa, 2018
An odonate survey was conducted throughout the southwestern region of Bangladesh, concentrating on eight districts and the Sundarban, from August 2014 to August 2016.
M. Sajjad Hossain Tuhin, M. Kawsar Khan
doaj   +1 more source

Effects of geographic distance and abiotic variables on larval Odonata assemblages in western Amazon savannah lakes

Anais da Academia Brasileira de Ciências
Odonata, comprising the suborders Anisoptera and Zygoptera, are important bioindicators of aquatic ecosystem health due to their sensitivity to environmental changes.
EMILY L. OLIVE, RENATO T. MARTINS, KARINA DIAS-SILVA, ULISSES G. NEISS, NEUSA HAMADA   +4 more
doaj   +1 more source

The impacts of habitat disturbance on adult and larval dragonflies (Odonata) in rainforest streams in Sabah, Malaysian Borneo [PDF]

, 2017
$\textbf{1.}$ Dragonfly assemblages (Odonata: comprising damselflies, Zygoptera; and dragonflies, Anisoptera) in Southeast Asian rainforests are extremely diverse but increasingly threatened by habitat disturbance, including logging and conversion of ...

core   +2 more sources

New record of andromorphic Urothemis signata Rambur (Odonata: Libellulidae) from India

Revista Chilena de Entomología, 2019
First case of an andromorphic female of Urothemis signata from eastern India is presented. Detail comparisons of the andromorphic female with mature male and female of this species are given.
Arajush Payra
doaj   +1 more source

Ischnura praematura sp. nov. (Odonata: Zygoptera: Coenagrionidae): a species from Yunnan (China) whose females mate in the teneral state.

Zootaxa, 2022
Ischnura praematura sp. nov. (Holotype , China, Yunnan, Lijiang, 263103.54N, 1001338.89E, 2396 m, 04 xii 2015, I. Sanmartn-Villar H. Zhang leg.) is morphologically described, illustrated and compared with close species of the genus.
I. Sanmartín‐Villar, M. O. LORENZO-CARBALLA, Haomiao Zhang, A. Cordero‐Rivera   +3 more
semanticscholar   +1 more source