Dispersal and reproduction in Tribolium: The influence of food level
Dispersal and reproduction in Tribolium: The influence of food level
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DOI：
10.1016/0022-1910(77)90122-6
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发表时间：
1977
影响因子：
2.2
通讯作者：
J. Ziegler
中科院分区：
文献类型：
--
作者：
J. Ziegler
Cohorts of 100 newly eclosed adults of strains bI and bIV ofT. confusumand strains cI and cIV ofT. castaneumemigrated over a 15-day interval from experimental habitats which contained a constant volume of 8, 4, 1, and 0 g of flour diluted with powdered polyethylene. Food level affected the emigration ofT. confusumadults only during the interval before the normal onset of reproduction. Thereafter the beetles exhibited virtually identical patterns of departure. Larval recruitment did not decline when food levels ranged from 8 to 1.T. castaneumdelayed their emigration at progressively lower food levels, but also produced fewer progeny. In strain cI, where emigration was more strongly deferred, the decline in larval recruitment was less pronounced. Both species ofTriboliumdeparted most rapidly when starved outright, but only after an initial delay.The results are interpreted from the point of view of the oögenesis-flight syndrome. It is suggested that theTriboliumsystem provides an opportunity to relate differences in colonizing ability among several closely related species to specific differences in the physiological mechanism of adaptive dispersal.
