Results 81 to 90 of about 610 (105)

Parasitism, immune response, and egg production of the spearhead bluet (Coenagrion hastulatum) damselfly [PDF]

open access: yesCanadian Journal of Zoology, 2017
Theoretical models predict that parasites reduce reproductive success of their hosts, but very few empirical studies have given support to this. Using the spearhead bluet (Coenagrion hastulatum (Charpentier, 1825)) damselfly, we tested how immune response, wing length, and the number of both endo- and ecto-parasites affect egg production of host ...
Kari M Kaunisto   +3 more
openaire   +3 more sources

The influence of cannibalism and prey density on growth in the damselfly Coenagrion hastulatum

Archiv Für Hydrobiologie, 1996
The effects of prey density and cannibalism on individual growth rate in similar sized Coenagrion hastulatum (Zygoptera) larvae were studied in a 66 day laboratory experiment. The frequency of cannibalism decreased with increasing alternative prey densities.
Frank Johansson
exaly   +2 more sources

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

open access: yes, 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.
Rolff, Jens   +3 more
openaire   +2 more sources

On the Cytology and Taxonomic Position of Nudispora biformis N. G., N. Sp. (Microspora, Thelohaniidae), a Microsporidian Parasite of the Dragon Fly Coenagrion hastulatum in Sweden

Journal of Eukaryotic Microbiology, 1990
ABSTRACTThe microsporidium Nudispora biformis n. g., n. sp., a parasite of a larva of the damsel fly Coenagrion hastulatum in Sweden, is described based on light microscopic and ultrastructural characteristics. Merogonial stages and sporonts are diplokaryotic. Sporogony comprises meiotic and mitotic divisions, and finally eight monokaryotic sporoblasts
J I Ronny Larsson
exaly   +2 more sources

Populations of the damselflyCoenagrion hastulatumat the edge of the species range have fewer gregarine and water mite parasites

Freshwater Biology, 2015
SummaryThe metapopulation theory predicts that the more distant a host population is from other populations, the more challenged will be a parasite to colonise it. We studied parasite prevalence of two parasite taxa across the geographical range of their host in Finland, from more dense host population structure in the south of Finland, towards the ...
Kari M. Kaunisto   +3 more
openaire   +2 more sources

Parasitism, immune response, and egg production of the spearhead bluet (Coenagrion hastulatum) damselfly

Canadian Journal of Zoology, 2017
Kari M. Kaunisto   +2 more
exaly  

Home - About - Disclaimer - Privacy