Impact of freezing on the emergence of Culicoides chiopterus and Culicoides dewulfi from bovine dung

S Steinke; R Lühken; E Kiel

doi:10.1016/j.vetpar.2015.01.027

Impact of freezing on the emergence of Culicoides chiopterus and Culicoides dewulfi from bovine dung

Vet Parasitol. 2015 Apr 15;209(1-2):146-9. doi: 10.1016/j.vetpar.2015.01.027. Epub 2015 Feb 9.

Authors

S Steinke¹, R Lühken², E Kiel²

Affiliations

¹ Research Group Aquatic Ecology and Nature Conservation, Department of Biology and Environmental Sciences, Carl von Ossietzky University of Oldenburg, Ammerländer Heerstraße 114-118, D-26111 Oldenburg, Germany. Electronic address: sonja.steinke@uni-oldenburg.de.
² Research Group Aquatic Ecology and Nature Conservation, Department of Biology and Environmental Sciences, Carl von Ossietzky University of Oldenburg, Ammerländer Heerstraße 114-118, D-26111 Oldenburg, Germany.

PMID: 25704656
DOI: 10.1016/j.vetpar.2015.01.027

Abstract

The emergence of Culicoides chiopterus (Meigen), 1830 and C. dewulfi Goetghebuer, 1936 (Diptera: Ceratopogonidae) from cowpats in northwestern Germany was investigated. In order to investigate the survival of both species at low temperatures, cowpat subsamples were frozen for 48h at -18 and -21°C. Emergence from frozen and non-frozen samples was compared. The number of emerging adults of C. chiopterus from samples frozen at -18°C was greatly reduced and no emergence was observed from samples frozen at -21°C. No adult C. dewulfi emerged from frozen samples, suggesting this species is less resistant to these temperatures, compared to C. chiopterus.

Keywords: Development; Emergence; Freezing; Larvae; Overwintering.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Animals
Cattle*
Ceratopogonidae / physiology*
Feces / parasitology*
Freezing*
Species Specificity