Sexual communication in the egg parasitoid Trissolcus brochymenae

Risultato della ricerca: Other

Abstract

The males of the egg parasitoid Trissolcus brochymenae (Hymenoptera Scelionidae) exploit a short range pheromone for recognition of the other gender. To evaluate the role of this pheromone, the behavior of virgin males has been studied in closed arena when exposed to the following cues: 1) virgin females (alive, dead "washed" with solvents, dead" unwashed"); 2) dissected and re-assembled virgin females (females dissected into head, mesosoma, and gaster, then reassembled using two solvent "washed" parts and an "unwashed” part, or "unwashed" legs assembled with entire" washed" body); 3) "washed" females treated with acetone extracts (of virgin females and of legs).Males antennate and mount virgin "washed" females with lower frequency and duration compared to dead "unwashed" females, where physical and semiochemical stimuli are maintained. The extrusions of the penis never occur when " washed" females are employed. The site of production and/or release of the sex pheromone is the mesosoma with legs and wings. Stimuli from females with only the mesosoma "unwashed" induce more intense male response in terms of antennation, mounting and penis extrusion compared to stimuli from females assembled with "unwashed" head or gastro. The males antennate intensely and mount, without penis extrusion, the dead females treated with extracts of virgin females. Instead, mounts never occur when extract of legs was applied. The chemical analysis of acetone extracts of virgin males and females showed qualitative differences.
Lingua originaleEnglish
Pagine109-109
Numero di pagine1
Stato di pubblicazionePublished - 2009

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Trissolcus
animal communication
virgin females
penis
legs
extrusion
extracts
pheromones
acetone
Scelionidae
semiochemicals
sex pheromones
chemical analysis
Hymenoptera

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title = "Sexual communication in the egg parasitoid Trissolcus brochymenae",
abstract = "The males of the egg parasitoid Trissolcus brochymenae (Hymenoptera Scelionidae) exploit a short range pheromone for recognition of the other gender. To evaluate the role of this pheromone, the behavior of virgin males has been studied in closed arena when exposed to the following cues: 1) virgin females (alive, dead {"}washed{"} with solvents, dead{"} unwashed{"}); 2) dissected and re-assembled virgin females (females dissected into head, mesosoma, and gaster, then reassembled using two solvent {"}washed{"} parts and an {"}unwashed” part, or {"}unwashed{"} legs assembled with entire{"} washed{"} body); 3) {"}washed{"} females treated with acetone extracts (of virgin females and of legs).Males antennate and mount virgin {"}washed{"} females with lower frequency and duration compared to dead {"}unwashed{"} females, where physical and semiochemical stimuli are maintained. The extrusions of the penis never occur when {"} washed{"} females are employed. The site of production and/or release of the sex pheromone is the mesosoma with legs and wings. Stimuli from females with only the mesosoma {"}unwashed{"} induce more intense male response in terms of antennation, mounting and penis extrusion compared to stimuli from females assembled with {"}unwashed{"} head or gastro. The males antennate intensely and mount, without penis extrusion, the dead females treated with extracts of virgin females. Instead, mounts never occur when extract of legs was applied. The chemical analysis of acetone extracts of virgin males and females showed qualitative differences.",
keywords = "Gc-MS, ooparasitoids, sex pheromones, sexual behaviour",
author = "Ezio Peri and Stefano Colazza",
year = "2009",
language = "English",
pages = "109--109",

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TY - CONF

T1 - Sexual communication in the egg parasitoid Trissolcus brochymenae

AU - Peri, Ezio

AU - Colazza, Stefano

PY - 2009

Y1 - 2009

N2 - The males of the egg parasitoid Trissolcus brochymenae (Hymenoptera Scelionidae) exploit a short range pheromone for recognition of the other gender. To evaluate the role of this pheromone, the behavior of virgin males has been studied in closed arena when exposed to the following cues: 1) virgin females (alive, dead "washed" with solvents, dead" unwashed"); 2) dissected and re-assembled virgin females (females dissected into head, mesosoma, and gaster, then reassembled using two solvent "washed" parts and an "unwashed” part, or "unwashed" legs assembled with entire" washed" body); 3) "washed" females treated with acetone extracts (of virgin females and of legs).Males antennate and mount virgin "washed" females with lower frequency and duration compared to dead "unwashed" females, where physical and semiochemical stimuli are maintained. The extrusions of the penis never occur when " washed" females are employed. The site of production and/or release of the sex pheromone is the mesosoma with legs and wings. Stimuli from females with only the mesosoma "unwashed" induce more intense male response in terms of antennation, mounting and penis extrusion compared to stimuli from females assembled with "unwashed" head or gastro. The males antennate intensely and mount, without penis extrusion, the dead females treated with extracts of virgin females. Instead, mounts never occur when extract of legs was applied. The chemical analysis of acetone extracts of virgin males and females showed qualitative differences.

AB - The males of the egg parasitoid Trissolcus brochymenae (Hymenoptera Scelionidae) exploit a short range pheromone for recognition of the other gender. To evaluate the role of this pheromone, the behavior of virgin males has been studied in closed arena when exposed to the following cues: 1) virgin females (alive, dead "washed" with solvents, dead" unwashed"); 2) dissected and re-assembled virgin females (females dissected into head, mesosoma, and gaster, then reassembled using two solvent "washed" parts and an "unwashed” part, or "unwashed" legs assembled with entire" washed" body); 3) "washed" females treated with acetone extracts (of virgin females and of legs).Males antennate and mount virgin "washed" females with lower frequency and duration compared to dead "unwashed" females, where physical and semiochemical stimuli are maintained. The extrusions of the penis never occur when " washed" females are employed. The site of production and/or release of the sex pheromone is the mesosoma with legs and wings. Stimuli from females with only the mesosoma "unwashed" induce more intense male response in terms of antennation, mounting and penis extrusion compared to stimuli from females assembled with "unwashed" head or gastro. The males antennate intensely and mount, without penis extrusion, the dead females treated with extracts of virgin females. Instead, mounts never occur when extract of legs was applied. The chemical analysis of acetone extracts of virgin males and females showed qualitative differences.

KW - Gc-MS

KW - ooparasitoids

KW - sex pheromones

KW - sexual behaviour

UR - http://hdl.handle.net/10447/41040

M3 - Other

SP - 109

EP - 109

ER -