Biblioteca Digital do Instituto Politécnico de Bragança   Instituto Politécnico de Bragança

Biblioteca Digital do IPB >
Escola Superior Agrária >
Ambiente e Recursos Naturais >
ARN - Resumos em Proceedings Não Indexados ao ISI/Scopus >

Please use this identifier to cite or link to this item:

Título: Colonization of Rio Maçãs (North Portugal) by two exotic crayfish, Pacifastacus leniusculus and Procambarus clarkii
Autor: Costa, A.M.
Bruxelas, S.
Bernardo, J.M.
Teixeira, Amílcar
Issue Date: 2009
Citação: Costa, A.M.; Bruxelas, S.; Bernardo, J.M.; Teixeira, A. (2009) - Colonization of River Maçãs (North Portugal) by Pacifastacus leniusculus and Procambarus clarkia: two exotic crayfish. In BIOLIEF- World Conference on Biological Invasions and Ecosystem Functioning. Porto
Resumo: In Portugal there was only one European crayfish species, the white clawed Austropotamobius pallipes. During the last decades, a sharp regression of these populations took place and the species is presently considered extinct in Portugal. Coming from Spain, two American species invaded the Portuguese freshwaters. The red swamp crayfish, Procambarus clarkii, a sub-tropical species, extremely resistant to severe climatic conditions, is actually present in almost inland waters. The signal crayfish, Pacifastacus leniusculus, a cold-water crayfish, reached recently the streams of NE Portugal and presently occurs in a sector of Rio Maçãs with approximately 43 km length. Progression of the two exotic species in Rio Maçãs was followed every year since 2000. The average velocity of propagation of signal crayfish from dispersion point is 2 km/year, although a great variability between sampling points was observed. Signal crayfish is well adapted to local stream conditions. Coexistence of signal and red swamp crayfish was detected in part of the river system.
Arbitragem científica: yes
Appears in Collections:ARN - Resumos em Proceedings Não Indexados ao ISI/Scopus

Files in This Item:

File Description SizeFormat
Costa et al._Colonization by two exotic crayfish_Biolief_2009.pdf73,28 kBAdobe PDFView/Open

Please give feedback about this item
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


© Instituto Politécnico de Bragança - Biblioteca Digital - Feedback - Statistics
Promotores do RCAAP   Financiadores do RCAAP

Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência PO Sociedade do Conhecimento (POSC) Portal oficial da União Europeia