Maternal effects on progeny size, number and body color in the desert locust, Schistocerca gregaria:: Density- and reproductive cycle-dependent variation
Maternal effects on progeny size, number and body color in the desert locust, Schistocerca gregaria:: Density- and reproductive cycle-dependent variation
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DOI：
10.1016/j.jinsphys.2008.04.010
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发表时间：
2008-06-01
影响因子：
2.2
通讯作者：
Tanaka, Seiji
中科院分区：
文献类型：
--
作者：
Maeno, Koutaro;Tanaka, Seiji
研究了饲养密度和母体年龄对沙漠蝗Schistocerca gregaria子代大小、数量和颜色的影响。隔离饲养的女性沉积较小，但更多的鸡蛋比人群饲养的女性。前者随着年龄的增长产生更小和更多的鸡蛋，而后者则表现出随着时间的推移产生更大和更少的鸡蛋的趋势。在处女雌性中也观察到类似的趋势，表明交配或雄性的存在并不重要。每个交配的群聚饲养的女性产生的第一个蛋荚包含显着更小，更多的鸡蛋比随后的蛋荚。前者往往产生许多绿色孵化（0-100%）的特点，孤独的形式，而第一个豆荚后沉积的卵荚产生的主要是黑色的孵化典型的群居形式。成年人是高度敏感的饲养密度的变化，并迅速修改其后代的质量和数量取决于密度遇到的。每荚产卵量不仅受母体饲养密度的影响，还受祖母饲养密度的影响。本研究结果表明，后代的特征不仅受到母亲和祖母所经历的拥挤条件的影响，而且还受到母亲的生殖周期的影响。(C)2008爱思唯尔有限公司保留所有权利。
The effects of rearing density and maternal age on the progeny size, number and coloration of the desert locust, Schistocerca gregaria, were investigated. Isolated-reared females deposited smaller, but more eggs than crowd-reared females. The former produced smaller and more eggs with age, whereas the latter showed a tendency to produce larger and fewer eggs over time. A similar tendency was also observed with virgin females, indicating that mating or the presence of males was not important. The first egg pod produced by each mated crowd-reared female contained significantly smaller and more eggs than did the subsequent egg pods. The former often produced many green hatchlings (0-100%) characteristic of solitarious forms, whereas the egg pods deposited after the first pod produced predominantly black hatchlings typical of gregarious forms. Adults were highly sensitive to a shift in rearing density and quickly modified the quality and quantity of their progeny depending on the density encountered. The number of eggs per pod was influenced not only by the mother's rearing density but also by rearing density of the grandmother. The present results demonstrated that the characteristics of progeny are influenced not only by the crowding conditions experienced by the mother and grandmother but also by the mother's reproductive cycle. (C) 2008 Elsevier Ltd. All rights reserved.