EFFECTS OF POPULATION-DENSITY EXPERIENCED BY PARENTS DURING MATING AND OVIPOSITION ON THE PHASE OF HATCHLING DESERT LOCUSTS, SCHISTOCERCA-GREGARIA
EFFECTS OF POPULATION-DENSITY EXPERIENCED BY PARENTS DURING MATING AND OVIPOSITION ON THE PHASE OF HATCHLING DESERT LOCUSTS, SCHISTOCERCA-GREGARIA
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DOI：
10.1098/rspb.1994.0099
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发表时间：
1994-07-22
影响因子：
4.7
通讯作者：
MCCAFFERY, AR
中科院分区：
文献类型：
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作者：
ISLAM, MS;ROESSINGH, P;MCCAFFERY, AR
采用Logistic回归分析方法，对1龄荒漠蝗虫在交配和产卵过程中所经历的种群密度进行了控制，并对其行为相状态进行了量化。产卵期间的拥挤导致以前被隔离饲养的雌性产生后代，表现为群居行为。然而，隔离以前群养的雌性会导致孵化出的幼崽表现得更孤独。交配期间经历的种群密度影响了单独饲养的父母的幼虫的行为，但不影响群体饲养的父母的幼虫的行为。这些结果表明，即使在生殖周期的最后阶段，阶段特征在世代之间的传递也可以改变，从而提供了相当大的灵活性，以应对种群密度的变化。
The behavioural phase state of first-instar desert locusts, Schistocerca gregaria Forskal, was quantified by using logistic regression analysis, following treatments in which the population density experienced by their mother during mating and oviposition was manipulated. Crowding during the period of oviposition caused females that had previously been reared in isolation to produce offspring which behaved in a gregarious manner. However, isolating previously crowd-reared females led to hatchlings which behaved more solitariously. The population density experienced during mating affected the behaviour of larvae from solitary-reared, but not crowd-reared, parents. These results show that the transmission of phase characteristics across generations can be modified even at the final stage of the reproductive cycle, providing considerable flexibility in response to changes in population density.