Host discrimination and interspecific competition of Trissolcus nigripedius and Telenomus gifuensis (Hymenoptera: Scelionidae), sympatric parasitoids of Dolycoris baccarum (Heteroptera: Pentatomidae)

Mahmoud, A. M.; Lim, Un Taek

doi:10.1016/j.biocontrol.2008.01.019

Cited by 24 publications

(20 citation statements)

References 27 publications

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“…This agrees with previous studies on close species such as T. pretiosum, Ch. The same behaviour was observed in Chelonus insularis and Telenomus remus (Earl and Graham 1984), as well as in Trissolcus nigripedius and Telenomus gifuensis (Mahmoud and Lim 2008). The same behaviour was observed in Chelonus insularis and Telenomus remus (Earl and Graham 1984), as well as in Trissolcus nigripedius and Telenomus gifuensis (Mahmoud and Lim 2008).…”

Section: Discussionsupporting

confidence: 64%

Possible effects of inter-specific competition on the coexistence of two parasitoid species:Trichogramma brassicaeBezdenko andChelonus oculator(F.) (Hymenoptera: Trichogrammatidae, Braconidae)

Cabello¹,

Gámez²,

Torres³

et al. 2011

Community Ecology

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Insect parasitoids have been widely studied, particularly due to their ecological implications through the study of the special relationships observed among this kind of species, as well as to their expression in mathematical models. However, there are still scarce studies on parasitoid relationships and their expression in more realistic mathematical models. The present work is aimed at deepening into competition relationships among parasitoids. Bearing this purpose in mind, the system shaped by two parasitoids was chosen: Trichogramma brassicae (idiobiont egg parasitoid) and Chelonus oculator (koinobiont egg-larval parasitoid). Both species compete against each other for the same host species (Lepidoptera). The results obtained in the laboratory point out that T. brassicae may be considered a better competitor than Ch. oculator. This is the result of the extrinsic competition due to the substances injected by the female during parasitization. However, our results show this classification into better and worse competitors inaccurate. Thus, these interspecific competition influences are detrimental to both parasitoid species. This is the first time that the effect of this competition is mentioned regarding parasitoid functional response. Our results and their ecological implications are reported and discussed.

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Section: Discussionsupporting

confidence: 64%

Possible effects of inter-specific competition on the coexistence of two parasitoid species:Trichogramma brassicaeBezdenko andChelonus oculator(F.) (Hymenoptera: Trichogrammatidae, Braconidae)

Cabello¹,

Gámez²,

Torres³

et al. 2011

Community Ecology

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“…Thus, the emergence rate of T. lyciumi was also not affected by the host immunity, although big‐sized Pa. sinica nymphs had strong immune systems. Furthermore, sex ratio and pre‐emergence period of emerging parasitoids depend mainly on the change of host quality (Godfray, ; Mahmoud & Lim, ). In order to allow further host growth and development, most endoparasitoids do not make a paralytic impact on the host (Moreau & Asgari, ).…”

Section: Discussionmentioning

confidence: 99%

The endoparasitoid Psyllaephagus arenarius benefits from ectoparasitic venom via multiparasitism with the ectoparasitoid Tamarixia lyciumi

et al. 2019

Insect Science

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As solitary nymphal parasitoids of Paratrioza sinica, the ectoparasitoid Tamarixia lyciumi and the endoparasitoid Psyllaephagus arenarius act as effective biocontrol agents. Thus, it is necessary to facilitate mass productions of both species. Despite showing an excellent parasitic ability, Ps. arenarius is often trapped fatally inside 5th-instar nymphs of Pa. sinica due to strong host immunity. To improve the emergence rate of Ps. arenarius, we evaluated whether Ps. arenarius could utilize T. lyciumi venom via multiparasitism, so the parasitism characteristics of both species were examined between separate-existence (monoparasitism only) and co-existence (mono-and multiparasitism) systems. Further, the parasitism characteristics of Ps. arenarius on venom-injected hosts with/without T. lyciumi eggs were tested to further identify the facilitator. The results showed the parasitism rate of T. lyciumi was increased while that of Ps. arenarius did not change from separate-existence to co-existence systems. The intrinsic performances of two species in monoparasitism did not differ between separate-and co-existence systems. From monoparasitism (separate-existence) to multiparasitism (co-existence), no differences were detected in the intrinsic performances of T. lyciumi, but those of Ps. arenarius were greatly improved. After T. lyciumi venom injection, the parasitism characteristics of Ps. arenarius did not differ between venom-injected hosts with T. lyciumi eggs and those without, further indicating Ps. arenarius benefited from the venom of T. lyciumi females rather than T. lyciumi egg/larval secretions. Instead of negative effects, multiparasitism with ectoparasitoids improves endoparasitoids due to ectoparasitic venom. The study increases host resource utilization and provides creative ways for mass production of endoparasitoids.

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“…Bu parazitleme süresi 30 dakikayı geçer ya da dişi parazitleme yapmaz ise gözlem sonlandırılarak yeni gözlem ile çalışmaya devam edilmiştir. Dişinin ovipozisyonundan sonra feromonla işaretleme davranışı gösterdiği yumurtalar parazitlenmiş olarak kabul edilmiştir (Mahmoud and Lim 2008, Rabb and Bradley 1970, Weber et al 1996. Bu parazitlemeden bir saat sonrasında yarısı parazitlenmiş yumurta paketi üzerine T. simoni dişisi bırakılarak aynı süreç steromikroskopta takip edilmiştir.…”

Section: Konukçuya Uygunluğu Ve Türler Arası Larva Rekabet Denemeleriunclassified

“…T. semistriatus dişisinin 1-2 günlük E. integriceps yumurtasını tercih ettiği, 3 gün yaşlı yumurtalarda parazitlenmenin %56'ya düştüğü bilinmektedir (Kıvan ve Kılıç 2003). Telenominae türlerinde parazitoit yumurtasının 20 saatlik (Navasero and Oatman 1989) (Mahmoud and Lim 2008). Başka bir tercihsiz denemede ise, konukçu S. calamistis yumurtalarında Te.…”

Section: Larva Rekabetiunclassified

See 1 more Smart Citation

Sünenin yumurta parazitoitleri Trissolcus semistriatus Nees ve Trissolcus simoni (Mayr.) (Hymenoptera: Scelionidae) arasındaki rekabet

Kıvan

Aysal

2018

Bitki Koruma Bülteni

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Host discrimination and interspecific competition of Trissolcus nigripedius and Telenomus gifuensis (Hymenoptera: Scelionidae), sympatric parasitoids of Dolycoris baccarum (Heteroptera: Pentatomidae)

Cited by 24 publications

References 27 publications

Possible effects of inter-specific competition on the coexistence of two parasitoid species:Trichogramma brassicaeBezdenko andChelonus oculator(F.) (Hymenoptera: Trichogrammatidae, Braconidae)

Possible effects of inter-specific competition on the coexistence of two parasitoid species:Trichogramma brassicaeBezdenko andChelonus oculator(F.) (Hymenoptera: Trichogrammatidae, Braconidae)

The endoparasitoid Psyllaephagus arenarius benefits from ectoparasitic venom via multiparasitism with the ectoparasitoid Tamarixia lyciumi

Sünenin yumurta parazitoitleri Trissolcus semistriatus Nees ve Trissolcus simoni (Mayr.) (Hymenoptera: Scelionidae) arasındaki rekabet

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