Zobrazeno 1 - 10
of 147
pro vyhledávání: '"Gonadal Regression"'
Publikováno v:
Journal of Comparative Physiology A. 204:721-735
We studied the effects of temperature on the photoperiodic regulation of seasonal reproduction and related events in the subtropical tree sparrow at Shillong, India. In the first experiment, one group of birds was maintained in an outdoor open aviary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::540cedd051d7f2525b816a9656dc11ee
https://doi.org/10.1007/s00359-018-1272-2
https://doi.org/10.1007/s00359-018-1272-2
Akademický článek
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Publikováno v:
Functional Ecology. 31:1220-1230
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d28202cff2f597c38804a78dd35fd530
https://doi.org/10.1111/1365-2435.12846
https://doi.org/10.1111/1365-2435.12846
Akademický článek
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Publikováno v:
PLoS ONE, Vol 13, Iss 2, p e0190274 (2018)
PLoS ONE
PLoS ONE
In birds, seasonal reproduction is regulated by day length, with long days in the spring activating the hypothalamic-pituitary-gonadal axis and reproductive behaviors. The photoreceptors mediating this process remain unknown, but recently, the premam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa995f8f20497fc59db7f4c8c3f604c5
http://europepmc.org/articles/PMC5819771?pdf=render
http://europepmc.org/articles/PMC5819771?pdf=render
Autor:
Alistair Dawson
Publikováno v:
General and Comparative Endocrinology. 190:129-133
Photoperiod is the major cue used by birds to time breeding seasons and molt. However, the annual cycle in photoperiod changes with latitude. Within species, for temperate and high latitude species, gonadal maturation and breeding start earlier at lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37ea283bca23acdb298dc2fc5351f678
https://doi.org/10.1016/j.ygcen.2013.05.017
https://doi.org/10.1016/j.ygcen.2013.05.017
Autor:
Namram S. Singh, Anand S. Dixit
Publikováno v:
Journal of Experimental Zoology Part A: Ecological Genetics and Physiology. 317:488-498
We investigated seasonal variations in response to photoperiods in subtropical tree sparrow (Passer montanus), by examining the effects of long and short days on stimulation of response and termination of refractoriness, respectively. We also assesse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e81e5a19799e9d0099304b26de4ec61
https://doi.org/10.1002/jez.1741
https://doi.org/10.1002/jez.1741
Publikováno v:
Hormones and Behavior. 61:176-180
Many nontropical species undergo physiological and behavioral adaptations in response to seasonal changes in photoperiod, or day length. In most rodent species, short winter photoperiods reduce testosterone concentrations, which provoke gonadal regre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccdce30cf97cd3945eb380480ab66ebc
https://doi.org/10.1016/j.yhbeh.2011.11.011
https://doi.org/10.1016/j.yhbeh.2011.11.011
Autor:
Jin Ho Park, Matthew P. Butler, Michael R. Gorman, Elanor E. Schoomer, Kevin W. Turner, Irving Zucker
Publikováno v:
Proceedings of the Royal Society B: Biological Sciences. 277:2867-2874
The seasonal reproductive cycle of photoperiodic rodents is conceptualized as a series of discrete melatonin-dependent neuroendocrine transitions. Least understood is the springtime restoration of responsiveness to winter-like melatonin signals (brea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5de94d554f9745275848ee9afd8c395c
https://doi.org/10.1098/rspb.2010.0396
https://doi.org/10.1098/rspb.2010.0396
Autor:
Peter J. Sharp, Alistair Dawson
Publikováno v:
General and Comparative Endocrinology. 167:122-127
In a study on starlings (Sturnus vulgaris) kept on a simulated annual cycle in photoperiod, temperature had no effect on the timing or rate of testicular maturation but high temperature resulted in an advance in the timing of testicular regression an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c3b7c1df7e6cd77032480d97f633f52
https://doi.org/10.1016/j.ygcen.2010.02.004
https://doi.org/10.1016/j.ygcen.2010.02.004