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Non-target effects of the exotic generalist parasitoid wasp Fopius arisanus (Sonan) estimated via competition assays against Doryctobracon areolatus (Szepligeti) on both native and exotic fruit fly hosts
BioControl ( IF 2.5 ) Pub Date : 2020-10-22 , DOI: 10.1007/s10526-020-10057-4
Beatriz A. G. Paranhos , Sonia Poncio , Renata Morelli , Dori E. Nava , Luiz A. N. de Sá , Nicholas C. Manoukis

Biological control by the generalist egg parasitoid Fopius arisanus (Sonan) (Hymenoptera: Braconidae) has been proposed against Bactrocera carambolae (Drew & Hancock) (Diptera: Tephritidae) in northern Brazil. This study assessed possible effects of F. arisanus on native parasitoids by focusing on competition with the native wasp Doryctobracon areolatus (Szépligeti) (Hymenoptera: Braconidae) on two hosts, Anastrepha fraterculus (Wiedemann), a native tephritid, and Ceratitis capitata (Wiedemann), an introduced pest tephritid. Laboratory and greenhouse cage studies showed that F. arisanus parasitized < 3% of the native host in competition or alone compared to 41–65% for C. capitata, while D. areolatus parasitized 12–42% of the native host and < 4% on C. capitata. The host origin of F. arisanus did not affect subsequent parasitism rates on native or exotic hosts. However, when reared on C. capitata, F. arisanus had higher parasitism on C. capitata than on A. fraterculus. Lab and greenhouse competition studies showed that F. arisanus had no measurable detrimental effect on the native parasitoid in either the native or introduced host, suggesting that F. arisanus interfered minimally with the native parasitoid. Based on these results and other relevant studies showing non-preference of F. arisanus for the native fruit fly species, as well as the non-preference of native parasitoids for exotic fruit flies, we infer that the release of F. arisanus against exotic tephritids such as C. capitata and B. carambolae in Brazil would not cause major disruption of the native populations of A. fraterculus parasitoids.



中文翻译:

通过对本地和外来果蝇寄主对Doryctobracon areolatus(Szepligeti)的竞争试验估计,外来的全能寄生蜂黄蜂Fopius arisanus(Sonan)的非目标效果

已经提出了在巴西北部对付拟杆菌(Drew&Hancock)(双翅目:蝇科)的全卵寄生卵拟南芥Fopius arisanus(Sonan)(膜翅目:Braconidae)的生物防治方法。本研究评估可能造成的影响F. arisanus重点放在与本地蜂的竞争对本地蜂Doryctobracon areolatus(Szépligeti):在两台主机(膜翅目茧蜂科)实蝇fraterculus(威德曼),本地tephritid和地中海实蝇(威德曼) ,是一种引进的害虫病。实验室和温室笼子研究表明,F。arisanus寄生<3在竞争天然宿主或单独的%相比,为41-65%实蝇,而D. areolatus寄生天然宿主的12-42%和<4%地中海实蝇Fris arisanus的寄主来源不影响本地或外来寄主的随后寄生率。然而,在饲养时,地中海实蝇,F. arisanus对更高的寄生实蝇A. fraterculus。实验室和温室竞争研究表明,Arisanus F.对本地或引进宿主中的天然寄生虫均无可衡量的有害影响,这表明Arisanus F.与天然寄生虫的干扰最小。基于这些结果和其他相关研究,结果表明,Arisanus不喜欢天然果蝇种,而Fisharisantoids不喜欢外来果蝇,我们推断Arisanus的释放是针对外来的拟南芥的像巴西的C. capitataB. carambolae不会对当地的A. fraterculus寄生蜂造成重大破坏。

更新日期:2020-10-30
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