Increasing Coffee Berry Borer (Coleoptera: Curculionidae: Scolytinae) Female Density in Artificial Diet Decreases Fecundity
Increasing Coffee Berry Borer (Coleoptera: Curculionidae: Scolytinae) Female Density in Artificial Diet Decreases Fecundity
复制标题
人工饲料中增加咖啡浆果蛀虫（鞘翅目：象甲科：小蠹亚科）雌性密度会降低繁殖力
DOI：
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发表时间：
2011
影响因子：
2.2
通讯作者：
J. Jaramillo
中科院分区：
文献类型：
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作者：
F. Vega;M. Kramer;J. Jaramillo
本文通过3个试验研究了人工饲料饲养的咖啡二化螟Hypothenemus hampea(Ferrari)(鞘翅目：卷蛾总科：Scolytinae)和雌虫(1、2、5只)对幼虫、蛹和成虫繁殖力及后续发育的影响。我们的结果表明，尽管有充足的食物资源，但将雌性密度从一只增加到两到五只并不会导致预期的后代数量增加两到五倍。相反，在所有实验中，随着密度的增加，生殖力都会下降。降低繁殖力的机制尚未确定，但可能正在产生挥发物(例如，标记寄主的信息素)。繁殖力的下降可能解释了为什么每个浆果只有一只定植雌蜂的侵扰在田间是常态。
ABSTRACT Three experiments were conducted to determine the influence of number of coffee berry borer, Hypothenemus hampei (Ferrari) (Coleoptera: Curculionidae: Scolytinae), females (one, two, or five) reared in artificial diet on fecundity and subsequent development of larvae, pupae, and adults. Our results demonstrated that increasing female density from one to two or five individuals did not result in the expected two- or five-fold increase in progeny, despite ample food resources available. Instead, decreased fecundity was observed with increasing density for all experiments. The mechanism reducing fecundity was not identified, but possibly, volatiles are being produced (e.g., host-marking pheromones). The decrease in fecundity may explain why infestations of only one colonizing female per berry are the norm in the field.