Presence of Males Increases the Area of Discovery of a Gregarious Parasitoid1,2

Kfir, Rami; Podoler, H.; Rosen, David

doi:10.1093/aesa/68.4.707

Cited by 15 publications

(14 citation statements)

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“…This is in contrast to the parasite V.canescens which demonstrates a typical behaviour after a successful encounter (Rogers, 1972). The reduction in the average number of successful encounters at the higher host density can be attributed to mutual interference which might affect the duration of the encounter (Kfir et al, 1975).…”

Section: Discussionmentioning

confidence: 86%

Analysis of solitariness in a parasite—host system (Muscidifurax raptor, Hymenoptera: Pteromalidae—Ceratitis capitata, Diptera: Tephritidae)*

Podoler¹,

Mendel²

1977

Ecological Entomology

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1. The behaviour of the parasite Musctdifim nrpror G i d t anit Sanders was studied when searching for hosts, puparia of' the Mediterranean fruit fly, Cemtitz3 capirutu (Wiedemann). At low density females tend to avoid encountering parasitized hosts. This tendency decreases as density of searching females increases.2. The proportional avoidance of superparasitism was calculated and the effect of increasing number of encounters per host on this parameter was analysed.3. The mechanisms of solitariness were studied. These mechanisms include:outer marking of the hosts by the female parasite and dt:liierate physical attack of the newly hatched larvae to eliminate as yet unhatched eggs. 4. In cases of intraspecific competition between larvae, young fmt or second instar larvae usually have the advantage over older larvae.

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Section: Discussionmentioning

confidence: 86%

Analysis of solitariness in a parasite—host system (Muscidifurax raptor, Hymenoptera: Pteromalidae—Ceratitis capitata, Diptera: Tephritidae)*

Podoler¹,

Mendel²

1977

Ecological Entomology

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“…The number of encounters between cr and 9, when they are present in equal proportion is expected to be higher than, or at least equal to, that between 9 9 In the presence of o" the number of male-female encounters is additional to the female-female encounters. So the total number of encounters to which the 9 are subjected is expected to be higher in the presence of o" (Kfir et al, 1975 ;Chua, 1979). Also the male-female encounters are usually longer than female-female encounters as the cr continues to chase the 9 even after meeting her (Kfir et aL, 1975 ;Singh & Sinha, 1982a).…”

Section: Discussionmentioning

confidence: 99%

“…So the total number of encounters to which the 9 are subjected is expected to be higher in the presence of o" (Kfir et al, 1975 ;Chua, 1979). Also the male-female encounters are usually longer than female-female encounters as the cr continues to chase the 9 even after meeting her (Kfir et aL, 1975 ;Singh & Sinha, 1982a). All this contributes to the reduction in the number of offspring produced by 9 in the presence of or.…”

Section: Discussionmentioning

confidence: 99%

“…Emergents were counted and the data was analysed statistically. Only the number of 9 parasitoids were taken into account for these calculations (Kfir et al, 1975).…”

Section: Methodsmentioning

confidence: 99%

“…Differences in the quality of host plants and the texture of their leaves have been reported to influence the reproductive behaviour of the parasitoid (Rabb & Bradley, 1968 ;Woets & Lenteren, 1976), but little information is available on the role of host plants when both the sexes are present (a condition met with in the field) and their impact on the reproductive rate of female parasitoid (Kfir et al, 1975 ;Shalaby & Rabasse, 1979). The present work is an attempt in this direction.…”

Section: Trioxys (Binodoxys) Indicus Subba Rao and Sharma Is An Importamentioning

confidence: 99%

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Parasitoid-host relationship betweenTrioxys (Binodoxys) Indicus [Hymenoptera: Aphidiidae] andAphis Craccivora [Hemiptera: Aphididae]. VI. Impact of males on the number of progeny of the parasitoid reared on certain host plants

et al. 1988

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The present paper elucidates the impact of males on the reproductive rate of Trioxys (Binodoxys) indicus reared on the aphids of Cajanus cajan, Dolichos lablab and Solanum melongena host plants. The F~ offspring increases with the increase of parasitoid number. This increase is maximum in C. cajan followed by D. lablab and S. melongena reared aphids. The presence of male parasitoids caused a significant decrease in the emergence of F~ generation.

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Impact of Males on the Numerical Response of Diaeretiella rapae (M'Intosh) (Hym., Aphidiidae), a Parasitoid of Lipaphis erysimi Kalt. (Hem., Aphididae)

Abidi

Kumar

Tripathi

1989

Zoosystematics & Evolution

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The number of emerging offspring was affected by the density of the female parasitoid and the co‐presence of males along with the females. Parasitisation rates were evaluated in 5 × 1.7 cm petri dishes at parasitoid densities 1, 2, 4, and 8 females only and males mixed with same numbers of females. The mean number of parasitoid progeny with 1, 2, 4, and 8 female densities were 41.0, 48.6, 61.6, and 75.0 while with the introduction of equal number of males it decreased to 26.8, 37.0, 50.6, and 64.6, respectively. Two mechanisms apparently contributed to this effect: decreased offspring of the females and alteration of egg distribution pattern. The number of progeny produced per female parasitoid was inversely proportional to the parasitoid number which explicates the intraspecific competition amongst the parasitoid.

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Presence of Males Increases the Area of Discovery of a Gregarious Parasitoid1,2

Cited by 15 publications

References 0 publications

Analysis of solitariness in a parasite—host system (Muscidifurax raptor, Hymenoptera: Pteromalidae—Ceratitis capitata, Diptera: Tephritidae)*

Analysis of solitariness in a parasite—host system (Muscidifurax raptor, Hymenoptera: Pteromalidae—Ceratitis capitata, Diptera: Tephritidae)*

Parasitoid-host relationship betweenTrioxys (Binodoxys) Indicus [Hymenoptera: Aphidiidae] andAphis Craccivora [Hemiptera: Aphididae]. VI. Impact of males on the number of progeny of the parasitoid reared on certain host plants

Impact of Males on the Numerical Response of Diaeretiella rapae (M'Intosh) (Hym., Aphidiidae), a Parasitoid of Lipaphis erysimi Kalt. (Hem., Aphididae)

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