Sex pheromone communication in the nematode,Rhabditis pellio
- 31 Downloads
Both males and females ofRhabditis pellio release pheromones that attract the opposite sex prior to copulation. A quantitative bioassay for the female-produced pheromone was designed, based on male movement toward a pheromone source placed at one end of a 10-mm strip of bacterial material maintained on nutrient agar in a petri plate. Females produced pheromone from the age at which they attained the adult stage (∼3 days following hatching from the egg) and maintained a relatively constant production level until at least the ninth day of life. Similarly, males became responsive to the female pheromone by the third day and remained responsive through the ninth day, although the time required for the males to migrate toward a female pheromone source increased with increasing age. No daily rhythm of pheromone responsiveness by males or pheromone production by females was observed when the nematodes were conditioned to a 12∶12 h light-dark cycle.
Key wordsnematode Rhabditis pellio pheromone quantitative bioassay daily rhythms age effects
Unable to display preview. Download preview PDF.
- Anya, A.O. 1976. Physiological aspects of reproduction in nematodes.Adv. Parasitol. 14:267–351.Google Scholar
- Bone, L.W., Shorey, H.H., andGaston, L.K. 1977. Sexual attraction and pheromonal dosage response ofNippostrongylus brasiliensis.J. Parasitol. 63:364–367.Google Scholar
- Bonner, T.P., andEtges, F.J. 1967. Chemically mediated sexual attraction inTrichinella spiralis.Exp. Parasitol. 21:53–60.Google Scholar
- Croll, N.A. 1970.The behaviour of nematodes. Edward Arnold Ltd., London. 117 pp.Google Scholar
- Greet, D.N. 1964. Observations on sexual attraction and copulation in the nematodePanagrolaimus rigidus.Nature 204:96–97.Google Scholar
- McCue, J.F., andThorson, R.E. 1965. Host effects on the migration ofNippostrongylus brasiliensis in a thermal gradient.J. Parasitol. 51:414–417.Google Scholar
- Poinar, G.O., Jr., andThomas, G.M. 1975.Rhabditis pellio Schneider (Nematoda) from the earthwormAporrectodea trapezoides Duges (Annelida).J. Nematol. 7:374–379.Google Scholar
- Somers, J.-A., Shorey, H.H., andGaston, L.K. 1977. Reproductive biology and behaviorof Rhabditis pellio.J. Nematol. 9:143–148.Google Scholar
- Van Gundy, S.D. 1965. Nematode behavior.Nematologica 11:19–32.Google Scholar
- Zuckerman, B.M. 1974. Ageing research utilizing free-living nematodes.Helm. Abs. Ser. B 43:67–81.Google Scholar