The life-history of Ischnura posita (Hagen) in relation to seasonal regulation : (Odonata: Coenagrionidae)

UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
Odessa Robinson Patrick (Creator)
The University of North Carolina at Greensboro (UNCG )
Web Site:
Paul Lutz

Abstract: A study was conducted on Ischnura posita to gain information on aspects of its seasonal cycle and what types of regulation are imposed upon it in achieving metamorphosis and emergence. Information was obtained through a program of larval population sampling and field observations throughout one year. It was found that I. posita was a univoltine, and possibly bivoltine summer species. Emergence was initiated in early spring, and adults were flying from early spring to late autumn. Emergence extended over most of the flying period. There was evidence of a second generation in the same year (bivoltine). The overwintering population appeared in a number of different sizes, and there was no indication of a diapause.

Additional Information

Language: English
Date: 1968
Coenagrionidae $x Development
Coenagrionidae $x Larvae
Coenagrionidae $x Reproduction $x Climatic factors

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