Effect of cold storage on the biological fitness of Encarsia sophia (Hymenoptera: Aphelinidae), a parasitoid of Bemisia tabaci (Hemiptera: Aleyrodidae)

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	Effect of cold storage on the biological fitness of Encarsia sophia (Hymenoptera: Aphelinidae), a parasitoid of Bemisia tabaci (Hemiptera: Aleyrodidae)
	Kidane, Dawit 1,2; Yang, Nian-Wan 1; Wan, Fang-Hao 1
刊名	EUROPEAN JOURNAL OF ENTOMOLOGY
	2015
卷号	112 期号:3 页码:460-469
关键词	Hymenoptera Aphelinidae Encarsia sophia storage at low temperature fitness trait emergence longevity parasitism rate Hemiptera Aleyrodidae Bemisia tabaci
ISSN号	1210-5759
通讯作者	Kidane, Dawit
英文摘要	Encarsia sophia (Girault & Dodd) (Hymenoptera: Aphelinidae) is an important bio-control agent of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae). Storage at low temperature is a valuable method used in the mass rearing of biological control agents to ensure the availability of sufficient parasitoids when needed. However, storing parasitoids at a low temperature may lead to a decrease in their fitness. The aim of this study was to determine the effect of different durations of constant low temperature storage on the fitness traits of the above parasitoid. The effect of storage at three temperatures (4, 8 and 12 +/- 1 degrees C, RH = 65-75% and in darkness) for periods of 1, 2 or 3 weeks and at two pupal stages (10 and 12 days old) was studied. The percentage emergence, time to emergence, longevity, size and ability of the females that emerged to parasitize B. tabaci were evaluated. The results indicate that there is a decrease in percentage emergence, longevity and ability to parasitize the longer and lower the temperature at which the pupae of E. sophia are stored. The percentage emergence of both pupal stages kept at 12 degrees C for a week was not affected. However, at lower temperatures (8 and 4 degrees C) percentage emergence after storage of two weeks decreased to 67-87.5% and after three weeks none emerged. The time to adult emergence was longer for 12 day old pupae at all temperatures and storage times. The longevity of the adults that emerged from both pupal stages after one week of storage at 12 and 8 degrees C was not affected, but decreased to 66-72% with increase in storage time. There was no effect of cold storage on adult size when 10 day old pupae were stored. The ability of this parasitoid to parasitize B. tabaci after emerging from both pupal stages stored at all of the temperatures regardless of storage time was significantly lower. Effect of storage at 12 degrees C for a week in terms of percentage emergence and longevity did not differ from that of the control, but nevertheless they were less able to parasitize B. tabaci. Although the information on the effect of cold storage on E. sophia is very limited, the results of this study indicate that for more efficient biological control there is an urgent need to improve the method of storing pupae.
学科主题	Entomology
语种	英语
出版者	CZECH ACAD SCI, INST ENTOMOLOGY
WOS记录号	WOS:000360715400009
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/11811]
专题	植物保护研究所
作者单位	1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China 2.Mekelle Univ, Coll Nat & Computat Sci, Dept Biol, Tigray, Ethiopia
推荐引用方式 GB/T 7714	Kidane, Dawit,Yang, Nian-Wan,Wan, Fang-Hao. Effect of cold storage on the biological fitness of Encarsia sophia (Hymenoptera: Aphelinidae), a parasitoid of Bemisia tabaci (Hemiptera: Aleyrodidae)[J]. EUROPEAN JOURNAL OF ENTOMOLOGY,2015,112(3):460-469.
APA	Kidane, Dawit,Yang, Nian-Wan,&Wan, Fang-Hao.(2015).Effect of cold storage on the biological fitness of Encarsia sophia (Hymenoptera: Aphelinidae), a parasitoid of Bemisia tabaci (Hemiptera: Aleyrodidae).EUROPEAN JOURNAL OF ENTOMOLOGY,112(3),460-469.
MLA	Kidane, Dawit,et al."Effect of cold storage on the biological fitness of Encarsia sophia (Hymenoptera: Aphelinidae), a parasitoid of Bemisia tabaci (Hemiptera: Aleyrodidae)".EUROPEAN JOURNAL OF ENTOMOLOGY 112.3(2015):460-469.