Titlebook: Circannual Rhythms; Endogenous Annual Cl Eberhard Gwinner Book 1986 Springer-Verlag Berlin Heidelberg 1986 Mammalia.animals.development.env

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书目名称Circannual Rhythms影响因子(影响力)




书目名称Circannual Rhythms影响因子(影响力)学科排名




书目名称Circannual Rhythms网络公开度




书目名称Circannual Rhythms网络公开度学科排名




书目名称Circannual Rhythms被引频次




书目名称Circannual Rhythms被引频次学科排名




书目名称Circannual Rhythms年度引用




书目名称Circannual Rhythms年度引用学科排名




书目名称Circannual Rhythms读者反馈




书目名称Circannual Rhythms读者反馈学科排名

弄污

Evidence for Circannual Rhythms,tury, their existence was not demonstrated before the early 1960’s. The most compelling evidence then was provided by the work of Pengelley and Fisher (1957, 1963) with golden-mantled ground spuirrels (.). Figure 2.1 shows the seasonal changes in body weight and food consumption, as well as the occu

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Properties of Free-Running Circannual Rhythms,und squirrels (.), those of body weight and other parameters in an eastern chipmunk (.) and the cycles of molt in garden warblers (.) and blackcaps (.) have been found to continue for at least five, six, and nine cycles, respectively (Table 2.1). This means that the circannual clock can function ess

ensemble

Synchronization of Circannual Rhythms,hapters. Under natural conditions, on the other hand, their period normally matches that of the natural year. This implicates the existence of zeitgebers, i.e., seasonally varying environmental factors that are capable of synchronizing (entraining) circannual rhythms with the yearly cycle of the sea

纬度

Mechanisms of Circannual Organization,lation of overt circannual functions by basic rhythmic processes. The chapter covers a wide and heterogenous field whose content was not easy to structure. The difficulties were further aggravated by the fact that the few investigations that have been devoted to problems of circannual physiology hav

MOTTO

Adaptive Significance of Circannual Rhythms,cannual rhythms function only in connection with external seasonal zeitgebers that synchronize them with the natural year and hence the question arises whether these external factors could not do the same job alone. As with circadian rhythms (Enright 1970) there appears to be no convincing answer to

MOTTO

Ludger Kolhoff,Peter-Ulrich Wendt,Iris Bothe this question as yet, but two general hypotheses about the biological significance of circannual rhythms merit special consideration. They will be discussed in the following sections (6.1.1 and 6.1.2).

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0720-1842 most conspicuous temporal changes to which organisms are exposed are periodic phenomena generated by the rotation of the earth about its axis, its revolution around the sun, and the more complex movements of the moon in relation to both sun and earth. The first two of these astronomical cycles are

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