INFLUENCE OF POPULATION DENSITY ON TETRANYCHUS-MULTISETIS
INFLUENCE OF POPULATION DENSITY ON TETRANYCHUS-MULTISETIS
复制标题
DOI：
10.1093/jee/45.4.652
复制
发表时间：
1952-01-01
影响因子：
2.2
通讯作者：
DAVIS, DW
中科院分区：
文献类型：
--
作者：
DAVIS, DW
以下基本上是作者的总结。在实验中，Tetranychus multisetisMcG.香蕉南瓜成熟的果实饲养，密集的人口导致每名女性的产卵量较低，非可行的鸡蛋比稀疏的人口发生的比例较高。之前观察到每只雌性的卵数减少，达到最大种群后，无活力卵增加。由于拥挤，幼螨也有一定的死亡率。集中在小区域通常使节肢动物更容易受到捕食者的攻击，但据信，这些螨产生的网提供了足够的保护来抵消这一缺点。
The following is substantially the author's summary. In experiments in whichTetranychus multisetisMcG. was reared on ripe fruits of banana squash, dense populations resulted in a lower egg production per female and a higher proportion of non-viable eggs than occurred in a sparse population. The reduced number of eggs per female was noted before and the increase in non-viable eggs after the maximum population was reached. There was also definite mortality among the young mites as a result of crowding. Concentration in small areas usually makes an arthropod more vulnerable to attack by predators, but it is believed that the webbing produced by these mites affords enough protection to offset this disadvantage.