SEX RATIOS OF SOME HIGH ARCTIC CHIRONOMIDAE (DIPTERA)

• Published in: The Canadian Entomologist
• Main Authors: Oliver, D. R., Danks, H. V.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 1972
• Subjects: Insect Science; Molecular Biology; Physiology; Ecology, Evolution, Behavior and Systematics; Structural Biology; Arctic; Hazen Camp
• Online Access: http://dx.doi.org/10.4039/ent1041413-9; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0008347X00032247

Abstract The sex ratios at emergence of some Chironomidae from ponds in the Hazen Camp area (81°49′ N., 71°18′ W.) are given from trap records for a number of seasons. In Tanypodinae and Chironomini there are apparently about equal numbers of the sexes; in Tanytarsini and most Orthocladiinae females consistently outnumber males, often forming 60% or more of the total emergence. These findings are discussed: the presence of facultative parthenogenesis in some species is thought to be likely.