@article {1816,
	title = {Patterns of parental provisioning covary with male morphology in a horned beetle (Onthophagus taurus) (Coleoptera: Scarabaeidae)},
	journal = {Behavioral Ecology and Sociobiology},
	volume = {42},
	number = {6},
	year = {1998},
	note = {June, 1998ArticleEnglish},
	pages = {447-451},
	abstract = {Male dung beetles, Onthophagus taurus, are dimorphic for a secondary sexual trait, head horns. Horned males participate in the production of brood masses while hornless male do not. Here we examine the reproductive performance of females mated with males exhibiting alternative horn morphologies. We found that exposure to males may be costly for females in that it reduced the total number of brood masses produced. However, females paired with horned males produced significantly larger brood masses than females paired with hornless males or females producing broods alone. We discuss the possible selection pressures that may underly horn evolution in this genus.},
	keywords = {Animalia-, Animals-, Arthropoda-, Arthropods-, Coleoptera-: Insecta-, Insects-, Invertebrata-, Invertebrates-, male-, male-dimorphism, morphology-, Onthophagus-taurus [horned-beetle] (Coleoptera-): female-, parental-care-patter, Reproduction-},
	author = {Hunt, John and Simmons, Leigh W.}
}
@article {2182,
	title = {Male participation in nest building in the dung beetle Scarabaeus catenatus (Coleoptera: Scarabaeidae): Mating effort versus paternal effort},
	journal = {Journal of Insect Behavior.},
	volume = {11},
	number = {6},
	year = {1998},
	note = {Using Smart Source ParsingArticleEnglish},
	pages = {833-843},
	abstract = {The dung beetle, Scarabaeus catenatus, shows not only the rolling but also the tunneling tactic for nest building with bisexual cooperation. Sex roles, however, differed between the tactics. In rolling, the male took in initiative like that of ball-roller species: he rolled a dung ball away and buried it. In tunneling, in contrast, the male usually had a secondary role like that of tunnelers: he was less active in burrow excavation and provisioning. Regardless of the tactics, male participation did not increase female reproductive output measured by the number or size of brood balls in the field, but seemed to function as mate guarding against conspecific males. This suggests that, in both tactics, the male S. catenatus invests primarily in mating effort compared with paternal effort. The relative importance of mating effort in male participation seems to hold true in other dung beetles, irrespective of whether they are ball-roller or tunneler species. In addition, the male matingstrategy of S. catenatus is compared with that of other ball-rollers.},
	keywords = {Animalia-, Animals-, Arthropoda-, Arthropods-, Behavior-, Coleoptera-: Insecta-, dung-rolling, Insects-, Invertebrata-, Invertebrates-, male-, male-participation, mating-effort, nes, nest-building, Scarabaeus-catenatus [dung-beetle] (Coleoptera-): female-},
	author = {Sato, Hiroaki}
}
@article {2287,
	title = {Two species of Canthon Hoffmannsegg feed  on dead and live invertebrates},
	journal = {The Coleopterists Bulletin},
	volume = {52},
	number = {2},
	year = {1998},
	note = {have copy-need to scan},
	pages = {101-104},
	keywords = {dung beetle, food mammals, Invertebrates-, resources},
	author = {Villalobos, J. and D{\'\i}az, A and Favila, M.}
}
