Data/hora: 01/06/2024 02:15:51

Provedor de dados: | 86
País: | Brazil
Título: | Community structures of soil animals and survival of land snails on an island of the Ogasawara Archipelago
Autores: | Hasegawa,Motohiro; Sugiura,Shinji; Ito,Masamichi T.; Yamaki,Aska; Hamaguchi,Keiko; Kishimoto,Toshio; Okochi,Isamu.
Data: | 2009-08-01
Ano: | 2009
Palavras-chave: | Badister; Platydemus manokwari; Formicidae; Isopoda; Oligochaeta; Platyhelminthes.
Resumo: | On Chichijima, one of the Ogasawara (Bonin) Islands located in the Western Pacific Ocean, land snails have declined, the suggested cause being predation pressure by an invasive flatworm (Platydemus manokwari). Soil fauna were investigated in areas where the snail survives, and where it has become extinct. Much of the fauna, dominated by introduced earthworms and ants, was undiminished, however, one undescribed but endemic carabid (Badister sp.), which selectively feeds on land snails, was absent in snail-extinct areas. The invasive flatworm P. manokwari has been reported to feed also on the carcasses of earthworms, as well as on live snails, and is therefore expected to occur in most parts of Chichijima Island. Among other groups, the density of isopods (also dominated by exotic species) was very low, in comparison with the reported ones 30 years ago. Community structure is currently reflected by dominance of earthworms and ants, decline of endemic isopods, and a high frequency of introduced or alien species.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800014

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/S0100-204X2009000800014
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.44 n.8 2009
Fonte: | info:eu-repo/semantics/openAccess