Host-Preference Studies with the Egg Parasite Trichogramma semifumatum (Hymenoptera: Trichogrammatidae)1,2

Taylor, T. Ajibola; Stern, Vernon M.

doi:10.1093/aesa/64.6.1381

Cited by 56 publications

(38 citation statements)

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“…Eggs deposited in hosts with larger body size can give rise to females descendants (as observed in this study to Elasmus and Brachymeria) since they require more resources to their development and consequently eggs deposited in hosts with smaller body size can give rise to male descendants (as observed in this study to Toechorychus and Seminota) (Taylor & Stern, 1971;Boldt et al, 1973). Strassmann (1981) suggested that males typically emerge first and can wait for the females emerge to mate.…”

Section: Discussionsupporting

confidence: 53%

“…With regard to the sex ratio of parasitoids that emerged from nests of social wasps, this can be influenced by many factors, such as environmental conditions and the body size of hosts (Townes, 1958;Hamilton, 1967;Taylor & Stern, 1971;Boldt et al, 1973;Vinson, 1997). Eggs deposited in hosts with larger body size can give rise to females descendants (as observed in this study to Elasmus and Brachymeria) since they require more resources to their development and consequently eggs deposited in hosts with smaller body size can give rise to male descendants (as observed in this study to Toechorychus and Seminota) (Taylor & Stern, 1971;Boldt et al, 1973).…”

Section: Discussionmentioning

confidence: 99%

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Record of Parasitoids in nests of social wasps (Hymenoptera: Vespidae: Polistinae)

Somavilla¹,

Schoeninger²,

Carvalho³

et al. 2015

Sociobiology

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Section: Discussionsupporting

confidence: 53%

Section: Discussionmentioning

confidence: 99%

Record of Parasitoids in nests of social wasps (Hymenoptera: Vespidae: Polistinae)

Somavilla¹,

Schoeninger²,

Carvalho³

et al. 2015

Sociobiology

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“…Benoit & Voegel6, 1979;Breni6re, 1965;Taylor & Stern, 1971 ;Yu et al, 1984). Investigations were carried out in the laboratory (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Apart from the latter idea, generalizations on host-species preference in Trichogramma apparently cannot be made (e.g. Taylor & Stern, 1971 ;Boldt et al, 1973).…”

Section: Introductionmentioning

confidence: 99%

Behavioural variation among strains of Trichogramma spp.: host‐species selection

Pak

Kaskens

Jong

1990

Entomologia Exp Applicata

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The host-selection behaviour of nine strains of Trichogramma spp., towards eggs of Mamestra brassicae, Pieris brassicae and P. rapae, was investigated in laboratory experiments in order to select candidate strains for inundative releases against these species. Experiments were carried out by continuously observing the behaviour of individual females, which were offered equal numbers of eggs of two host species arranged in a grid. M. brassicae was a highly acceptable host species for all strains, whereas the acceptability of the two Pieris species was similar within strains, but varied between strains. Considering the variation in acceptance of Pieris eggs, strains either showed: (1) no preference between Mamestra and Pieris (High Pieris Acceptance = HPA strains), (2)a preference for Mamestra (Variable Pieris Acceptance = VIA strains), or (3) an aversion for Pieris (Low Pieris Acceptance = LPA strains). Females of VPA strains showed a high acceptance of Pieris eggs if the preferred Mamestra eggs were absent. They contacted comparatively fewer Pieris eggs in presence of Mamestra eggs, which indicates selection of hosts at a distance. HPA strains probably are the best candidates for inundative releases.

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“…The suitability of the parasite would largely depend on its searching behaviour (habitat location, host location) as well as host preference, acceptance and tolerance to environmental conditions. Several research workers have attempted to test some of these factors to evaluate and compare the suitability of different Trichogramma species for use in biological control (Dolphin et aL, 1978, Dijken et aL, 1986, Koehetova, 1969, Van Lenteren et al, 1982, Schieferflecker, 1969, Taylor & Stern, 1971. Quednau (1955) pointed out that the host finding by Trichogramma is primarily influenced by ecological factors, whereas the host preference is influenced by chemical factors and host suitability by mechanical, chemical and physiological factors.…”

mentioning

confidence: 99%

Selection of suitable trichogramma strains to control the codling mothCydia pomonella and the two summer fruit tortrix mothsAdoxophyes orana, Pandemis heparana [Lep.: Tortricidae]

Hassan¹

1989

Entomophaga

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Simple laboratory methods to select candidate Trichogramrna strains for use in biological control were tried. 17 strains were screened for their suitability against the codling moth Cydia pomonella L. as well as the 2 summer fruit tortrix moths Adoxophyes orana F.R. and Pandemis heparana Schiff. In one set of experiments, the capacity of Trichogramma to parasitize each of these target pests was examined, in another set, the preference of Trichogramma to contact and parasitize the target pests compared to the standard mass rearing host Sitotroga cerealella was assessed in choice experiments.A strain of Trichogramma dendrolimi from the People's Republic of China was found to have the highest fecundity with all the 4 hosts tested. In choice experiments, however, this strain was shown to have a near equal preference between the target tortrix pests C. pomonella, A. orana and the replacement host S. cerealella, il local Trichogramma strains collected from fruit orchards and vineyards in different locations in the Federal Republic of Germany were reared separately. Four of these local strains, one identified as T. embryophagum, showed clear preference to the tortrix pests C. pomonella and A. orana compared to S. cerealella. The preference of one of these strains was particularly strong and amounted to a near total rejection ofS. cerealella eggs in the presence of any of the 2 tortrix pests.The remaining 12 strains had weaker parasitization capacity and/or less preference to the target pests. Four of the strains tested in these experiments, including T. dendrolimi and T. embryophagum, were mass reared and released in apple orchards between 1984 and 1986. The results of these field experiments are planned to be published in this journal.

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Host-Preference Studies with the Egg Parasite Trichogramma semifumatum (Hymenoptera: Trichogrammatidae)1,2

Cited by 56 publications

References 0 publications

Record of Parasitoids in nests of social wasps (Hymenoptera: Vespidae: Polistinae)

Record of Parasitoids in nests of social wasps (Hymenoptera: Vespidae: Polistinae)

Behavioural variation among strains of Trichogramma spp.: host‐species selection

Selection of suitable trichogramma strains to control the codling mothCydia pomonella and the two summer fruit tortrix mothsAdoxophyes orana, Pandemis heparana [Lep.: Tortricidae]

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