Population structure of a native and an alien species of snail in an urban area of the Atlantic Rainforest

Autor:	Jose Heitzmann Fontenelle, Iracy Lea Pecora, Marcel Sabino Miranda
Rok vydání:	2014
Předmět:	education.field_of_study biology Ecology Population Niche Introduced species Biodiversity Rainforest biology.organism_classification Spatial distribution Megalobulimus Achatina Abundance (ecology) education Ecology Evolution Behavior and Systematics Taxonomy
Zdroj:	Journal of Natural History. 49:19-35
ISSN:	1464-5262 0022-2933
DOI:	10.1080/00222933.2014.930756
Popis:	Native Megalobulimus paranaguensis was identified on Brazil’s Ilha Porchat promontory, an area that Achatina fulica commonly populates. The population structures of these species were investigated for interactions. Spatial distribution, niche overlap and mark–recapture analysis were conducted. The outer lip of M. paranaguensis and environmental variables were measured. One and two abundance peaks were observed for A. fulica and M. paranaguensis, respectively. Survivorship was higher in A. fulica. Distribution was aggregate for M. paranaguensis, whereas for A. fulica it varied from random to aggregate. Both species aggregate as abundance increases. The lifespan of M. paranaguensis in this location is shorter than its lifespan in a nearby location. Achatina fulica was affected by soil temperature and humidity; M. paranaguensis was influenced by humidity. Niche overlap was random. The results show that M. paranaguensis can keep its natural activity and abundance in the presence of A. fulica, but environmenta...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebe476cb8ac94be5b14f3b97e6a811b6 https://doi.org/10.1080/00222933.2014.930756 Zobrazit plný text záznamu