Use este identificador para citar ou linkar para este item:
https://repositorio.inpa.gov.br/handle/1/18786
Registro completo de metadados
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Martin, Anthony Richard | - |
dc.contributor.author | Silva, Vera Maria Ferreira da | - |
dc.date.accessioned | 2020-06-15T22:03:01Z | - |
dc.date.available | 2020-06-15T22:03:01Z | - |
dc.date.issued | 2006 | - |
dc.identifier.uri | https://repositorio.inpa.gov.br/handle/1/18786 | - |
dc.description.abstract | Measurements and quantitative descriptions of a large sample of live adult botos (Inia geoffrensis) were obtained from the Mamirauá Reserve in the central Amazon. Males were on average 16% longer and weighed 55% more than females, demonstrating that this species is one of the most sexually dimorphic of all cetaceans for size. Males were also pinker than females, more heavily scarred by intraspecific tooth rakes, and had more life-threatening injuries. Some larger males had areas of modified skin that may simply be scar tissue, but may also be a heritable characteristic used as a shield or weapon. As in sperm whales, sexual size dimorphism and male-male aggression appear to be linked in botos, suggesting fierce competition for a resource - probably mating opportunities. The boto is unique among river dolphins in that males are larger than females. This distinction implies long evolutionary separation and fundamental differences in social behavior. © 2006 by the Society for Marine Mammalogy. | en |
dc.language.iso | en | pt_BR |
dc.relation.ispartof | Volume 22, Número 1, Pags. 25-33 | pt_BR |
dc.rights | Restrito | * |
dc.subject | Cetacean | en |
dc.subject | Color | en |
dc.subject | Sexual Dimorphism | en |
dc.subject | Amazon River | en |
dc.subject | Amazonas | en |
dc.subject | Brasil | en |
dc.subject | Mamiraua Sustainable Development Reserve | en |
dc.subject | South America | en |
dc.subject | Cetacea | en |
dc.subject | Dolphin (cetacean) | en |
dc.subject | Inia Geoffrensis | en |
dc.subject | Mammalia | en |
dc.subject | Physeteridae | en |
dc.title | Sexual dimorphism and body scarring in the boto (Amazon river dolphin) Inia geoffrensis | en |
dc.type | Artigo | pt_BR |
dc.identifier.doi | 10.1016/j.jhydrol.2005.10.040 | - |
dc.publisher.journal | Marine Mammal Science | pt_BR |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Não existem arquivos associados a este item.
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.