Abstract
Females of Callosobruchus maculatustend to distribute their eggs uniformly among host seeds and, thereby, reduce competition among larvae within seeds. We investigated variability in this behavior by assaying beetles from seven geographic strains on each of three host species. To quantify egg-spacing behavior,we devised an index (U)that estimates the uniformity of the egg distribution but is independent of the number of eggs laid. Egg-spacing behavior was highly variable among beetle strains and legume hosts. Females from an Indian strain frequently achieved the most uniform distribution possible (maximum hyperdispersion), whereas females from two Brazilian strains frequently deposited eggs randomly. Differences among strains were evident throughout the period of oviposition;some strains were “sloppy” when even egg densities were low. Variation in egg-spacing behavior appears to be influenced by prior host associations and by host size. The most well-developed spacing behavior was observed in a strain associated with the smallest host, which supports only one or two larvae per seed. Realized fecundity also varied significantly among beetle strains. We found no evidence, however, of a predicted tradeoff between the number of eggs laid and the uniformity of the egg dispersion.
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References
Averill, A. L., and Prokopy, R. J. (1987). Intraspecific competition in the tephritid fruit flyRhagoletis pomonella.Ecology 68: 878–886.
Averill, A. L., and Prokopy, R. J. (1988). Factors influencing release of host-marking pheromone byRhagoletis pomonella flies.J. Chem. Ecol. 14: 95–111.
Avidov, Z., Berlinger, M. J., and Applebaum, S. W. (1965). Physiological aspects of host specificity in the Bruchidae. III. Effect of curvature and surface area on oviposition ofCallosobruchus chinensis L.Anim. Behav. 13: 178–180.
Bultman, T. L., and Faeth, S. H. (1986). Experimental evidence for intraspecific competition in a lepidopteran leaf miner.Ecology 67: 442–448.
Charnov, E. L., and Skinner, S. W. (1985). Complementary approaches to the understanding of parasitoid oviposition decisions.Environ. Entomol. 14: 383–391.
Credland, P. F. (1986). Effect of host availability on reproductive performance inCallosobruchus maculatus (F.) (Coleoptera: Bruchidae).J. Stored Prod. Res. 22: 49–54.
Dick, K. M., and Credland, P. F. (1984). Egg production and development of three strains ofCallosobruchus maculatus (F.) (Coleoptera: Bruchidae).J. Stored Prod. Res. 20: 221–227.
Godfray, H. C. J. (1987). The evolution of clutch size in parasitic wasps.Am. Nat. 129: 221–233.
Huignard, J., Leroi, B., Alzouma, I., and Germain, J. F. (1985). Oviposition and development ofBruchidius atrolineatus (Pic) andCallosobruchus maculatus (F.) (Coleoptera: Bruchidae) inVigna unguiculata (Walp) cultures in Niger.Insect Sci. Appl. 6: 691–699.
Janzen, D. H., Juster, H. B., and Liener, I. E. (1976). Insecticidal action of the phytohemagglutinin in black beans on a bruchid beetle.Science 192: 795–796.
Messina, F. J. (1987). Genetic contribution to the dispersal polymorphism of the cowpea weevil (Coleoptera: Bruchidae).Ann. Entomol. Soc. Am. 80: 12–16.
Messina, F. J., and Renwick, J. A. A. (1985a). Ability of ovipositing seed beetles to discriminate between seeds with differing egg loads.Ecol. Entomol. 10: 225–230.
Messina, F. J., and Renwick, J. A. A. (1985b). Dispersal polymorphism ofCallosobruchus maculatus (Coleoptera: Bruchidae): Variation among populations in response to crowding.Ann. Entomol. Soc. Am. 78: 201–206.
Messina, F. J., and Renwick, J. A. A. (1985c) Mechanism of egg recognition by the cowpea weevilCallosobruchus maculatus.Entomol. Exp. Appl. 37: 241–245.
Messina, F. J., Barmore, J. L., and Renwick, J. A. A. (1987a). Host selection by ovipositing cowpea weevils: Patterning of input from separate sense organs.Entomol. Exp. Appl. 43: 169–173.
Messina, F. J., Barmore, J. L., and Renwick, J. A. A. (1987b). Oviposition deterrent from eggs ofCallosobruchus maculatus: Spacing mechanism or artifact?J. Chem. Ecol. 13: 219–226.
Mitchell, R. (1975). The evolution of oviposition tactics in the bean weevil,Callosobruchus maculatus (F.).Ecology 56: 696–702.
Mitchell, R. (1983). Effects of host-plant variability on the fitness of sedentary herbivorous insects. In Denno, R. F., and McClure, M. S. (eds.),Variable Plants and Herbivores in Natural and Managed Systems, Academic Press, New York, pp. 343–370.
Nwanze, K. F., and Horber, E. (1976). Seed coats of cowpeas affect oviposition and larval development ofCallosobruchus maculatus.Environ. Entomol. 5: 213–218.
Parker, G. A., and Courtney, S. P. (1984). Models of clutch size in insect oviposition.Theor. Popul. Biol. 26: 27–48.
Potter, D. A. (1985). Population regulation of the native holly leafminer,Phytomyza ilicicola Loew (Diptera: Agromyzidae), on American holly.Oecologia 66: 499–505.
Prokopy, R. J. (1981). Epideictic pheromones that influence spacing patterns of phytophagous insects. In Nordlund, D. A., Jones, R. L., and Lewis, W. J. (eds.),Semiochemicals: Their Role in Pest Control, Wiley, New York. pp. 181–213.
Prokopy, R. J., Reissig, W. H., and Moericke, V. (1976). Marking pheromones deterring repeated oviposition inRhagoletis flies.Entomol. Exp. Appl. 20: 170–178.
Roitberg, B. D., and Prokopy, R. J. (1981). Experience required for pheromone recognition by the apple maggot fly.Nature 292: 540–541.
Roitberg, B. D., and Prokopy, R. J. (1987). Insects that mark host plants.BioScience 37: 400–406.
Sano-Fujii, I. (1986). The genetic basis of the production of the active form ofCallosobruchus maculatus (F.) (Coleoptera: Bruchidae).J. Stored Prod. Res. 22: 115–123.
Simberloff, D., and Stiling, P. (1987). Larval dispersion and survivorship in a leafmining moth.Ecology 68: 1647–1657.
Smith, R. H., and Lessells, C. M. (1985). Oviposition, ovicide and larval competition in granivorous insects. In Smith, R. H., and Sibly, R. M. (eds.),Behavioural Ecology: Ecological Consequences of Adaptive Behaviour, Blackwell Scientific. Oxford, pp. 423–448.
Thanthianga, C., and Mitchell, R. (1987). Vibrations mediate prudent resource exploitation by competing larvae of the bruchid bean weevilCallosobruchus maculatus.Entomol. Exp. Appl. 44: 15–21.
Utida, S. (1943). Studies on the experimental population of the azuki bean weevil,Callosobruchus chinensis (L.). VIII. Statistical analysis of the frequency distribution of the emerging weevils on beans.Mem. Coll. Agr. Kyoto Imp. Univ. 54: 1–22.
van Lenteren, J. C. (1981). Host discrimination by parasitoids. In Nordlund, D. A., Jones, R. L., and Lewis, W. J. (eds.),Semiochemicals: Their Role in Pest Control, Wiley, New York, pp. 153–180.
Wasserman, S. S. (1986). Genetic variation in adaptation to foodplants among populations of the southern cowpea weevil,Callosobruchus maculatus: Evolution of oviposition preference.Entomol. Exp. Appl. 42: 201–212.
Wilkinson, L. (1988).SYSTAT: The System for Statistics, Systat, Inc. Evanston, Ill.
Wilson, K. (1988). Egg laying decisions by the bean weevilCallosobruchus maculatus.Ecol. Entomol. 13: 107–118.
Zimmerman, M. (1982). Facultative deposition of an oviposition-deterring pheromone byHylemya.Environ. Entomol. 11: 519–522.
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Messina, F.J., Mitchell, R. Intraspecific variation in the egg-spacing behavior of the seed beetleCallosobruchus maculatus . J Insect Behav 2, 727–742 (1989). https://doi.org/10.1007/BF01049397
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DOI: https://doi.org/10.1007/BF01049397