Differences in the reproductive durations of Myzus persicae (Hemiptera:Aphididae) parasitized by three aphidiid parasitioids
Differences in the reproductive durations of Myzus persicae (Hemiptera:Aphididae) parasitized by three aphidiid parasitioids
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三种蚜虫寄生的桃蚜（半翅目：蚜科）繁殖期的差异
DOI：
10.1007/s13355-016-0402-y
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发表时间：
2016
影响因子：
1.3
通讯作者：
Takayuki Mitsunaga・Koukichi Nagasaka・Seiichi Moriya
中科院分区：
文献类型：
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作者：
石橋和大;石川雅之;Kazuhiro Ishibashi and Masayuki Ishikawa;石川雅之;Ryuji Uesugi and Koukichi Nagasaka;Takayuki Mitsunaga・Koukichi Nagasaka・Seiichi Moriya
比较了三种蚜虫寄生后桃蚜的繁殖持续时间，并探讨了持续时间差异的机制。蚜虫Aphidius colemani Viereck、Aphidius gifuensis Ashmead和Diaeretiella rapae(McIntosh)寄生的成虫一生繁殖力分别为3.96、6.40和6.48。这些值远小于健康成虫（若虫 61.43）。蚜虫繁殖终止的时间与寄生蜂幼虫达到二龄的时间一致。我们推断，所有三个物种的一龄幼虫最初都会攻击同种和/或异种竞争者，并且蚜虫的卵巢和其他生殖器官的消耗从第二龄开始。根据寄生后繁殖力计算出的修正后的自然增长率（重新寄生）为 0.185 byA。科莱马尼，0.233，作者：A. gifuensis，和 0.234 byD。菜籽油。 100% 的成年蚜虫被 A 寄生。吉丰西索D. rapae 将增长率降至最低 24.4%，而 A. colemanimore 适度抑制了蚜虫种群的增长 (39.9%)。我们提出，蚜虫亚科物种作为生物防治剂的有效性可能受到寄生后蚜虫繁殖持续时间差异的影响。
The reproductive durations ofMyzus persicae(Sulzer) after parasitization by three species of Aphidiinae were compared and the mechanisms for differences in duration were examined. The lifetime fecundities of adult aphids parasitized byAphidius colemaniViereck, Aphidius gifuensisAshmead, andDiaeretiella rapae(McIntosh) were 3.96, 6.40, and 6.48, respectively. These values were much smaller than that of healthy adults (61.43 nymphs). The time of termination of reproduction by the aphids coincided with the time that the parasitic wasp larvae reached second instar. We infer that first-instar larvae of all three species initially attack conspecific and/or heterospecific competitors and that consumption of the aphid’s ovaries and other reproductive organs commences in the second instar. The modified intrinsic rates of natural increase (rparasitized) calculated from post-parasitized fecundity were 0.185 byA. colemani, 0.233 byA. gifuensis, and 0.234 byD. rapae. Parasitization of 100 % of the adult aphids byA. gifuensisorD. rapaedecreased the growth rate to a minimum of 24.4 % whileA. colemanimore moderately suppressed the growth of the aphid population (39.9 %). We propose the possibility that the effectiveness of species of Aphidiinae as biological control agents is influenced by differences in the duration of aphid reproduction following parasitization.