Life History of Ilybius fenestratus (Fabricius) (Coleoptera, Dytiscidae) in a Central Norwegian Lake

Autor:	Dag Dolmen, John O. Solem
Rok vydání:	2002
Předmět:	Larva biology Ecology Insect Science Littoral zone Dytiscidae Fenestratus Aquatic Science Life history biology.organism_classification Ecology Evolution Behavior and Systematics Ilybius fenestratus Overwintering
Zdroj:	Aquatic Insects. 24:199-205
ISSN:	1744-4152 0165-0424
Popis:	The life history of Ilybius fenestratus was studied in Malsj⊘en, a lake in S⊘r-Tr⊘ndelag, Central Norway (63°14'N, 10°26'E), during 1971–1972. Adults and larvae were sampled in activity traps every week during March–October and every 2–3 weeks during November–February. Newly-emerged adults were generally found from mid-July to September, and after overwintering in torpidity, probably in the water, they again appeared in the second half of June to August/September. Laying of eggs took place from early/mid July to early August. Larvae occurred in the traps from late July to early May. I. fenestratus was thus found to be a semivoltine summer breeder, with overwintering larvae the first winter and overwintering adults the next. Both adults and larvae lived in large areas of the lake's littoral zone.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a7484f3262b3f53a5f0368d537c34f05 https://doi.org/10.1076/aqin.24.3.199.8118 Zobrazit plný text záznamu