Eur. J. Entomol. 99 (4): 451-456, 2002 | DOI: 10.14411/eje.2002.057
Mating behaviour of Aphidius ervi (Hymenoptera: Braconidae): The role of antennae
- 1 Dipartimento di Biologia, Difesa e Biotecnologie Agro-Forestali, Universita della Basilicata, Macchia Romana, 85100 Potenza, Italy.
- 2 Dipartimento di Biotecnologie Agrarie ed Ambientali, Universita di Ancona, via Brecce Bianche, 60100 Ancona, Italy.
- 3 Dipartimento di Arboricoltura e Protezione delle Piante, Universita di Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy.
In the mating behaviour of Aphidius ervi Haliday the antennae play a pivotal role in partner recognition and acceptance. Mating failure was always observed when antennal contact was experimentally prevented. The male of A. ervi has filiform antennae, consisting of scape, pedicel and 18-20 cylindrical antennomeres (flagellar segments), which bear numerous types of sensory structures and, interspersed among the multiporous plate sensilla, especially on the 1th and 2nd flagellar segments, scattered pores. A secretion oozes from these pores in virgin males exposed to conspecific females. Transmission electron microscopy revealed that these pores are the external openings of integumentary glands. Behavioural and morpho-functional observations indicated that a double step sex recognition mechanism is present in A. ervi, as in other parasitic Hymenoptera. Basically, female recognition by males appears to be mediated by a volatile sex pheromone, that triggers the behavioural sequence leading to mounting. Then, the female recognizes and accepts the male after antennal contact. This is mediated by the secretion that oozes from the male antennal glands, which acts as a contact pheromone.
Keywords: Mating behaviour, ultrastructure, parasitoid, pheromone, functional anatomy, antennal glands, sensilla, Aphidius ervi, Aphidiinae
Received: May 25, 2001; Revised: November 6, 2001; Accepted: January 7, 2002; Published: December 10, 2002 Show citation
References
- Bin F., Strand M.R. & Vinson S.B. 1988: Antennal structures and mating behavior in Trissolcus basalis (Woll.) (Hym.: Scelionidae), egg parasitoid of the Green Stink Bug. Les Colloques de l'INRA 43: 143-151. In Voegele J., Waage J. & Van Lenteren J. (eds) Proceedings of the 2nd International Symposium on Trichogramma and other egg parasites, Guangzhou (China), November 10-15, 1986
- Bin F., Waeckers F., Romani R., Isidoro N. 1999: Tyloids in Pimpla turionellae (L.) are release structures of male antennal glands involved in courtship behaviour (Hymenoptera: Ichneumonidae). Int. J. Insect Morphol. Embryol. 28: 61-68
Go to original source...
- Bouchard Y. & Cloutier C. 1985: Role of olfaction in host finding by aphid parasitoid Aphidius nigripes (Hymenoptera: Aphidiidae). J. Chem. Ecol. 11: 801-808
Go to original source...
- Dahms E. 1984: An interpretation of the structure and function of the antennal sense organs of Melittobia australica (Hymenoptera: Eulophidae) with the discovery of a large dermal gland in the male scape. Mem. Queensland Mus. 21: 361-377
- Decker U.M., Powell W. & Clark S.J. 1993: Sex pheromone in the cereal aphid parasitoids Praon volucre and Aphidius rhopalosiphi. Entomol. Exp. Appl. 69: 33-39
Go to original source...
- Guerrieri E., Pedata P.A., Romani R., Isidoro N. & Bin F. 2001: Functional anatomy of male antennal glands in three species of Encyrtidae (Hymenoptera: Chalcidoidea). J. Nat. Hist. 35: 41-54
Go to original source...
- Jewett D.K. & Carpenter J.E. 1999: Chemically-mediated attraction of Ichneumon (= Pterocormus) promissorius (Hymenoptera: Ichneumonidae) males by females. Environ. Entomol. 28: 551-556
Go to original source...
- Kimani S.W. & Overholt W.A. 1995: Biosystematics of the Cotesia flavipes complex (Hymenoptera: Braconidae): interspecific hybridization, sex pheromone and mating behaviour studies. Bull. Entomol. Res. 85: 379-386
Go to original source...
- Isidoro N., Bin F., Colazza S. & Vinson S.B. 1996: Morphology of antennal gustatory sensilla and glands in some parasitoid Hymenoptera with hypothesis on their role in sex and host recognition. J. Hym. Res. 5: 206-239
- Isidoro N., Bin F., Romani R., Pujade-Villar J. & Ros-Farre P. 1999: Diversity and function of male antennal glands in Cynipoidea (Hymenoptera). Norw. Acad. Sci. Lett., Zool. Scripta 28: 165-174
Go to original source...
- Mackauer M. 1969: Sexual behaviour of and hybridization between three species of Aphidius Nees parasitic on the pea aphid. Proc. Entomol. Soc. Wash. 71 (3): 339-351
- Nazzi F., Powell W., Wadhams L.J. & Woodcock C.M. 1996: Sex pheromone of aphid parasitoid Praon volucre (Hymenoptera: Braconidae). J. Chem. Ecol. 22: 1169-1175
Go to original source...
- McNeil J.N. & Brodeur J. 1995: Pheromone-mediated mating in the aphid parasitoid, Aphidius nigripes (Hymenoptera: Aphididae). J. Chem. Ecol. 21: 959-972
Go to original source...
- Pennacchio F. & Tremblay E. 1987: Biosystematic and morphological study of two Aphidius ervi Haliday (Hymenoptera: Braconidae) "biotypes" with the description of a new species. Boll. Lab. Entomol. Agr. Filippo Silvestri 43: 105-117
- Pompanon F., Schepper B.De, Mourer Y., Fouillet P. & Bouletreau M. 1997: Evidence for a substrate-borne sex pheromone in the parasitoid wasp Trichogramma brassicae. J. Chem. Ecol. 23: 1349-1360
Go to original source...
- Powell W. & Zhang Zhi-Li 1983: The reactions of two cereal aphid parasitoids, Aphidius uzbekistanicus and A. ervi to host aphid and their foodplants. Physiol. Entomol. 8: 439-443
Go to original source...
- Rao S.V. & DeBach P. 1969: Experimental studies on hybridization and sexual isolation between some Aphytis species (Hymenoptera: Aphelinidae). I. Experimental hybridization and an interpretation of evolutionary relationships among the species. Hilgardia 39: 515-553
Go to original source...
- Romani R., Isidoro N. & Bin F. 1999: Further evidence of male antennal glands in Aphelinidae: the case of Aphytis melinus DeBach (Hymenoptera: Parasitica). J. Hym. Res. 8: 109-115
- Sacchetti P., Belcari A., Romani R., Isidoro N. & Bin F. 1999: External morphology and ultrastructure of male antennal glands in two diapriids (Hymenoptera: Diapriidae). Entomol. Problems 30 (1): 63-71
- Wharton R.A. 1984: Biology of the Alysiini (Hymenoptera: Braconidae), parasitoids of the Cyclorrhaphous Diptera. Tech. Monograph Texas Agric. Exper. Stat. 11: 3-39
This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.