Water mites (Arrenurus spp.) parasitize adult dragonflies. We collected dragonflies weekly at 11 waterbodies in Greenville Co. and Pickens Co., SC, USA, to: (1) compare parasitism prevalence across species, sites, and sampling periods; (2) test the hypothesis that prevalence correlates with host abundance; (3) test the hypothesis that prevalence is inversely related to host diversity…
Food intake rate and diet composition have a high impact on all organisms and affect individual fitness, fecundity and mortality. Specimens in enclosures have to be fed in an adequate way and with minimum stress for the specimens. Adult dragonflies are flying hunters. In enclosures, they are usually fed by adding different kinds of adult…
Dragonflies (Odonata: Anisoptera) are often used as indicators of habitat type and quality due to their varied use of aquatic and terrestrial habitats. Species differ in their preferences for lotic and lentic waters, but community changes across ecotones, or transitional zones between distinct habitats (e.g. lotic and lentic), are not well understood. We quantified dragonfly…
International Congress of Odonatology 2017 vision session The International Congress of Odonatology 2017 (ICO2017) will be held in the Gillespie Centre at Clare College Cambridge from 16 to 20 July 2017. Registration will be on Saturday 15 July. Special Session: vision A special session on dragonfly vision because we are in Cambridge will be (more…)
Preamble A policy is needed to reconcile the need to collect and preserve specimens of dragonflies with the need for the conservation of species and habitats. There is an apparent conflict between, on the one hand, the requirement that species recorders, educators and scientists be able to examine and re-examine preserved specimens from certain taxa (more…)
Are dragonflies effective at controlling mosquitoes and other insect pests?
Globally, freshwater ecosystems and the organisms that depend on them are at risk. Dragonflies and damselflies (collectively, “odonates”) have a history of being used as bioindicators of freshwater habitat quality due to their wide range in environmental sensitivities across species and because they are relatively accessible.
The deadline for submission of abstracts is 15th April 2023. Abstracts Abstract submission is now open! Abstracts should be submitted via this word document. Then email to Ros Sparrow rosalyn250@gmail.com. Presentations To give adequate time for comprehensive content and questions, regular presentation slots will be 20 min long (including questions). Recommended: 15 min talk + 5 min (more…)
Programme at-a-glance Below you will find a the ICO2023 programme. This is the most up-to-date version and will be kept updated as the programme develops. A printed version of the programme and abstracts will be available on site for registered delegates. ICO2023 programme overview Congress programme There are five main themes of the ICO2023 (see (more…)
Our goal was to investigate whether the loss of riparian forests alters the structure of assemblages and populations of dragonflies and damselflies. We tested the hypothesis that the composition of the odonate assemblages found upstream from dams are significantly different from those found downstream of these barriers. To test the hypothesis, we investigated stream sectors…