Abstract：
:Twelve male edible dormice, captured in the autumn of 1979, were studied for 2 years under natural lighting in an animal enclosure with permanently open windows, at Montpellier, in Southern France (latitude 43 degrees 50' N). Ambient temperature fluctuated annually between +4 and 27 degrees, and the photoperiod between 10L:14D and 16L:8D. Another group of 26 animals, captured in the autumn of 1980, was observed under the same conditions for 1 year. Body weight and plasma testosterone and thyroxine concentrations were measured at monthly intervals under standardized conditions. Hibernation generally extended from October to February but lasted till May in a few cases, and the critical temperature for dormancy varied between 13 and 16 degrees in November and 23 degrees in May. Body weight fluctuated annually according to a biphasic pattern, with two maxima, respectively, in spring and autumn (prehibernation), and two minima, in summer and winter. However, plasma testosterone and thyroxine concentrations displayed clearly monophasic annual cycles, closely correlated, both to each other and to the ambient temperature and photoperiod. Both the testosterone and thyroxine cycles culminated in June-July. Interestingly, the annual ascending phase for both hormonal cycles never preceded the terminal arousal of the animal. Further, whatever the season, 30 degrees was clearly the critical minimal body temperature required for a seasonal increase to occur in plasma testosterone. These annual cycles are discussed in the light of the data acquired recently for hibernators other than the dormouse.
journal_name
Gen Comp Endocrinoljournal_title
General and comparative endocrinologyauthors
Jallageas M,Assenmacher Idoi
10.1016/0016-6480(83)90266-6subject
Has Abstractpub_date
1983-06-01 00:00:00pages
452-62issue
3eissn
0016-6480issn
1095-6840journal_volume
50pub_type
杂志文章abstract：:Using morpholino antisense oligonucleotide (MO) technology, we blocked leptin A or leptin receptor expression in embryonic zebrafish, and analyzed consequences of leptin A knock-down on fish development. Embryos injected with leptin A or leptin receptor MOs (leptin A or leptin receptor morphants) had smaller bodies an...
journal_title：General and comparative endocrinology
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journal_title：General and comparative endocrinology
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
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journal_title：General and comparative endocrinology
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/0016-6480(87)90248-6
更新日期：1987-06-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/0016-6480(85)90316-8
更新日期：1985-11-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1006/gcen.1999.7363
更新日期：1999-11-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章,评审
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更新日期：2008-01-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
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更新日期：1986-04-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/0016-6480(92)90059-s
更新日期：1992-06-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1006/gcen.1994.1132
更新日期：1994-09-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1006/gcen.1993.1046
更新日期：1993-03-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.ygcen.2015.10.004
更新日期：2016-12-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/0016-6480(87)90157-2
更新日期：1987-08-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
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journal_title：General and comparative endocrinology
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journal_title：General and comparative endocrinology
pub_type： 杂志文章,评审
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更新日期：1987-11-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
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更新日期：2011-08-01 00:00:00
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journal_title：General and comparative endocrinology
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更新日期：2003-02-01 00:00:00
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journal_title：General and comparative endocrinology
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2012.12.010
更新日期：2013-04-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1006/gcen.1998.7088
更新日期：1998-07-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/0016-6480(86)90225-x
更新日期：1986-03-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1006/gcen.2001.7720
更新日期：2002-01-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2008.11.009
更新日期：2009-01-15 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2013.11.015
更新日期：2014-01-15 00:00:00
abstract：:To better understand the role(s) of progesterone in fish spermatogenesis, we cloned the nuclear progesterone receptor (Pgr) of Atlantic cod. The open-reading frame of the cod pgr consists of 2076 bp, coding for a 691-amino acids-long protein that shows the highest similarity with other piscine Pgr proteins. Functional...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2012.07.022
更新日期：2012-10-01 00:00:00
