منابع مشابه
Photoperiodic regulation of insect and molluscan hormones.
The universal occurrence of photoperiodism in insects is due to convergentevolution. The neuroendocrine system, playing the central role in the photoperiodicresponse, gives diversified terminal expressions of adaptive significance. The responsecurve reflects the distributions of individual threshold photoperiods in three differentranges corresponding to the minimum number of dar...
متن کاملPlant Growth Hormones in Pinyon Insect Galls
BYERS J. A., BREWER J. W. & DENNA D. W. 1976. Plant growth hormones in pinyon insect galls. Marcellio 39, 125-134. Larvae of the midge Janetiella sp. near J. coloradensis Felt (Diptera: Cecidomyiidae) cause galls at the base of young needles of pinyon Pinus edulis Engelm. Bioassays of extracts from these galls contained as much as 17 times more auxin activity and as much as 21 times more gibber...
متن کاملOrganizational and activational effects of hormones on insect behavior.
The concepts of hormone organization and activation provide a framework for thinking about the influence of hormones on development, brain, and behavior in vertebrates. There is good evidence for activational effects of hormones on the nervous system and behavior in insects, but organizational effects are almost never discussed in the insect literature. This paper explores the utility of the co...
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ژورنال
عنوان ژورنال: Bulletin of the Entomological Society of America
سال: 1976
ISSN: 0013-8754
DOI: 10.1093/besa/22.3.390a