Data/hora: 11/06/2024 12:36:47

Provedor de dados: | 76
País: | Brazil
Título: | Two decades of colonization of the urban environment of Porto Alegre, southern Brazil, by Drosophila paulistorum (Diptera, Drosophilidae)
Autores: | Garcia,Ana Cristina L.; Valiati,Victor Hugo; Gottschalk,Marco S.; Rohde,Cláudia; Valente,Vera Lúcia da S.
Data: | 2008-09-01
Ano: | 2008
Palavras-chave: | Biological invasion; Colonization; Drosophila paulistorum; Urban ecology; Zaprionus indianus.
Resumo: | Drosophila paulistorum Dobzhansky &amp;amp; Pavan, 1949 had initially been considered absent in anthropogenically disturbed environments, but in 1985 the detection of the species in Porto Alegre city, southern Brazil, suggested its potential to colonize new habitats and laid the foundations for ecologic studies on this species' populations. This study followed the variations in D. paulistorum populations in this town almost 20 years after its first local record. Drosophilid specimens were collected in sites with different urbanization grades and the results point to the expressive decline in D. paulistorum populations in Porto Alegre. This decline may be linked to urban growth and to naturally driven population decline, as imputed to climatic changes like variations in maximum and minimum temperatures as a consequence of a global climate warming. Also, the recent introduction of exotic species Zaprionus indianus Gupta, 1970 seems to play a role in this scenario, changing the interactions between native species.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000300007
Editor: | Museu de Ciências Naturais
Relação: | 10.1590/S0073-47212008000300007
Formato: | text/html
Fonte: | Iheringia. Série Zoologia  v.98 n.3 2008
Fonte: | info:eu-repo/semantics/openAccess