Biomaterial Database

[Daily and seasonal changes in the oviposition activities of Culex pipiens pipiens L. (author's transl)]. 1979

T Oda, and F Kuhlow

The oviposition activity of C. p. pipiens during summer and autumn has been investigated at two breeding sites in West and North Germany. The egg rafts were collected and counted daily or hourly. Soon after its begin oviposition reached a high peak and then decreased sharply and faded out towards sunrise. There was an obvious correlation between the hourly maximum number of egg rafts deposited and nightfall. The peak of oviposition regularly followed the sunset with one hour delay. It shifted with the changing daylight period according to the season and geographic latitude. The decrease and ending of the oviposition in September is considered not to be related to the decreasing temperatures, but to be due to the disappearance of the gonoactive summer generation and the predominance of the diapausing females of the over-wintering population.

UI	MeSH Term	Description	Entries
D010058	Oviposition	The process of laying or shedding fully developed eggs (OVA) from the female body. The term is usually used for certain INSECTS or FISHES with an organ called ovipositor where eggs are stored or deposited before expulsion from the body.	Larviposition,Larvipositions,Ovipositions
D002940	Circadian Rhythm	The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs or environmental and physiological stimuli.	Diurnal Rhythm,Nyctohemeral Rhythm,Twenty-Four Hour Rhythm,Nycthemeral Rhythm,Circadian Rhythms,Diurnal Rhythms,Nycthemeral Rhythms,Nyctohemeral Rhythms,Rhythm, Circadian,Rhythm, Diurnal,Rhythm, Nycthemeral,Rhythm, Nyctohemeral,Rhythm, Twenty-Four Hour,Rhythms, Circadian,Rhythms, Diurnal,Rhythms, Nycthemeral,Rhythms, Nyctohemeral,Rhythms, Twenty-Four Hour,Twenty Four Hour Rhythm,Twenty-Four Hour Rhythms
D003465	Culex	A genus of mosquitoes (CULICIDAE) commonly found in tropical regions. Species of this genus are vectors for ST. LOUIS ENCEPHALITIS as well as many other diseases of man and domestic and wild animals.	Culices
D005260	Female		Females
D005860	Germany, West	The former Federal Republic of Germany which was reunified with the former German Democratic Republic in 1990.	Federal Republic of Germany,Germany, Federal Republic of
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D012621	Seasons	Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Seasonal Variation,Season,Seasonal Variations,Variation, Seasonal,Variations, Seasonal