Zobrazeno 1 - 10
of 134
pro vyhledávání: '"B Silverin"'
Autor:
John F. Cockrem, B. Silverin
Publikováno v:
General and Comparative Endocrinology. 125:248-255
The corticosterone response to the sight of a natural predator was investigated in free-living and captive great tits (Parus major). Free-living great tits responded to the sight of a stuffed, slowly moving Tengmalm's owl, a major predator of great t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5934cdfc7e9d724f8103ba54e832dd18
https://doi.org/10.1006/gcen.2001.7749
https://doi.org/10.1006/gcen.2001.7749
Autor:
B. Silverin, J.C. Wingfield
The integument consists of skin and all its constituents, including hair, feathers, scales, horns, wattles, and all types of external structures. Because these structures are constantly exposed to abrasion, exposure to sunlight and weather, they must
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c222b649ecd681e8a38b713a3a0c8fa
https://doi.org/10.1016/b978-0-08-045337-8.00254-0
https://doi.org/10.1016/b978-0-08-045337-8.00254-0
Autor:
Claes Andrén, B. Silverin
Publikováno v:
Amphibia-Reptilia. 13:177-192
Abstract The ovarian cycle in natterjack toads Bufo calamita from an island population with unpredictable breeding conditions was studied in an archipelago off the Swedish west coast. About 80% of the female population bred during spring and early su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::215cab5414cc4f96225c3a5a45a2044f
https://doi.org/10.1163/156853892x00364
https://doi.org/10.1163/156853892x00364
Autor:
John F. Cockrem, B. Silverin
Publikováno v:
General and comparative endocrinology. 125(2)
The present study investigated inter- and intraindividual variation of the stress response (in terms of plasma levels of corticosterone) to handling in birds. Individual captive great tits (Parus major) were exposed to a standardised capture and hand
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e8ba2054a03d513bfd3f5e0ebc03225
https://pubmed.ncbi.nlm.nih.gov/11884065
https://pubmed.ncbi.nlm.nih.gov/11884065
Publikováno v:
General and comparative endocrinology. 113(3)
The present study investigated (1) the photoperiodic threshold for an increase in FSH and LH secretion in male great tits ( Parus major ) from south Sweden and (2) seasonal changes in FSH secretion patterns in short day (SD; 8 L:16 D) and long day (L
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb415783bdf7b49fd962d6fd1daf593a
https://pubmed.ncbi.nlm.nih.gov/10068506
https://pubmed.ncbi.nlm.nih.gov/10068506
Autor:
J. Westin, B. Silverin
Publikováno v:
Hormones and behavior. 29(2)
In early January photosensitive willow tits (Parus montanus) were transferred from natural to long days (20L;4D). The study included three groups of birds: one group consisted of pairs (one male and one female kept together in a cage), a second group
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::613d57bf8da462d6c3f77c55d5ba7a2c
https://pubmed.ncbi.nlm.nih.gov/7557923
https://pubmed.ncbi.nlm.nih.gov/7557923
Publikováno v:
Hormones and behavior. 24(4)
A rise in plasma testosterone (T) levels occurs in male rats during the first 2 hr after birth which is of importance for the process of sexual differentiation. To study the influence of environmental factors on the postnatal T surge and sexual devel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61807998ac16e09c9d33e9f17d2003ce
https://pubmed.ncbi.nlm.nih.gov/2286361
https://pubmed.ncbi.nlm.nih.gov/2286361
Autor:
Hubert Schwabl, B. Silverin
Publikováno v:
Bird Migration ISBN: 9783642745447
Avian migration varies considerably both inter- and intraspecifically with respect to direction, timing and distance (Schuz 1971 ; Gauthreaux 1982). In populations of differential migrants all individuals migrate, but they differ in timing or distanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::427303ff3fe907ef3414398f3ac7780a
https://doi.org/10.1007/978-3-642-74542-3_10
https://doi.org/10.1007/978-3-642-74542-3_10
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