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Shimomura, K., Koshino, H., Yajima, A., Matsumoto, N., Kagohara, Y., Kamada, K., et al. (2010). 2,3-Dihydrohomofarnesal: Female Sex Attractant Pheromone Component of Callosobruchus rhodesianus (Pic). J Chem Ecol, 36(8), 824–833.
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Shu, S., Mbata, G. N., Cork, A., & Ramaswamy, S. B. (2004). Sex Pheromone of Callosobruchus subinnotatus. Journal of Chemical Ecology, 25(12), 2715–2727.
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Kingsolver, J. M. (2004). Handbook of the Bruchidae of the United States and Canada (Insecta, Coleoptera).
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Yamane, T., & Miyatake, T. (2010). Inhibition of female mating receptivity by male-derived extracts in two Callosobruchus species: consequences for interspecific mating. J Insect Physiol, .
Abstract: We investigated the effects of injecting male-derived extracts on congeneric female receptivity in two species of Callosobruchus beetle, C. chinensis and C. maculatus. We also examined the influence of interspecific mating on female remating behaviour in these two species. Male-derived extracts reduced congeneric female receptivity in both species. As quick-acting components, extracts of C. chinensis male seminal vesicles reduced the receptivity of C. maculatus females, whereas extracts of C. maculatus male testes reduced the receptivity of C. chinensis females. As slow-acting components, extracts of male accessory glands of other species reduced the receptivity of both C. maculatus and chinensis females. After interspecific mating, the sperm of C. maculatus males were transferred to the reproductive organs of C. chinensis females, thereby reducing their receptivity. In contrast, no C. chinensis sperm were transferred to the reproductive organs of C. maculatus females; accordingly, the latter's receptivity was not reduced. Furthermore, the survival rate of C. chinensis females decreased markedly after interspecific mating. These results raise the possibility that under circumstances where populations of these two species share the same habitat, reproductive interference would occur only in the interactions between C. maculatus males and C. chinensis females.
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Belmain, S. R., Neal, G. E., Ray, D. E., & Golob, P. (2001). Insecticidal and vertebrate toxicity associated with ethnobotanicals used as post-harvest protectants in Ghana. Food Chem Toxicol, 39(3), 287–291.
Abstract: Six plant species (Cassia sophera, Chamaecrista nigricans, Mitragyna inermis, Ocimum americanum, Securidaca longepedunculata and Synedrella nodiflora) traditionally used in Ghana to control insect pests of stored grain and legumes were screened in the laboratory at three concentrations (0.5, 1 and 5%, w/w) against four common storage pests (Rhyzopertha dominica, Callosobruchus maculatus, Sitophilus zeamais and Prostephanus truncatus). All the plants showed some ability to control all or some of the test insect species. Levels of efficacy varied according to test concentration with the highest concentration tested providing the best control. The S. longepedunculata plant induced the highest percent mortality and was the best at reducing emergence of the F(1) generation. The six plants were also incorporated into standard rat diet at two concentrations (1 and 5%, w/w) and fed to rats over a 6-week period to assess potential deleterious effects against vertebrates. None of the plants demonstrated any neurotoxicological or neurobehavioural effects to the rats over the course of the trial. However, S. longepedunculata and C. nigricans caused a significant reduction in rat growth rate when incorporated at 5% in the diet, induced cell hyperplasia in the liver, and reduced the mean weight of the liver and kidneys, compared to the control group of rats. Kidney pathology was affected only by the 5% concentration of S. longepedunculata which caused a reduced accumulation of alpha2mu-globulin. The implications of these results are discussed in the context of farmer usage of insecticidal plants for stored product protection.
Keywords: Animals; Beetles; Diet; Ghana; Insecticides/*toxicity; Insects/*physiology; *Plants; Rats; Tritium; Vertebrates/*physiology; Weight Gain
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