Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.3/1364
Título: Reproductive biology of Megabalanus azoricus (Pilsbry), the Azorean Barnacle
Autor: Dionísio, Maria Ana
Rodrigues, Armindo
Costa, Ana C.
Palavras-chave: Azores
Cirripedia
Megabalanus azoricus
Reproduction
Fertility
Gametogenesis
Gonadal Maturation
Data: Set-2007
Editora: Balaban, Philadelphia/Rehovot
Citação: "Invertebrate Reproduction & Development". ISSN 2157-0272. Volume 50, Issue 3 (2007), pp. 155–162(8).
Resumo: The reproductive biology of Megabalanus azoricus (Pilsbry), the commercially exploited barnacle in the Azores, was studied in an attempt to provide the scientific basis for the sustainable management of this heavily exploited regional marine resource. Both the Ospar Commission and WWF have expressed concern for this species, considering it at risk and in urgent need for scientific study. Barnacles were collected every month from shallow water (.3 m depth) around São Miguel Island from October 2004 to September 2005. Individuals were measured and gonads processed for histology and analysed with a stereological method. M. azoricus has a hermaphroditic reproductive system with separate gonads and it was possible to describe the various stages of gametic maturation in both. Data on fertility were also obtained by egg counts and calculation of the Gonadosomatic index (GSI). Throughout the year, some specimens of M. azoricus can be found that rare mature, but two reproductive peaks were observed, one in January and a smaller one in July. A strong positive correlation between GSI and environmental factors such as photoperiod and water temperature was observed.
Descrição: Copyright © 2007, Taylor & Francis.
Peer review: yes
URI: http://hdl.handle.net/10400.3/1364
ISSN: 0792-4259 (Print)
2157-0272 (Online)
Versão do Editor: http://dx.doi.org/10.1080/07924259.2007.9652240
Aparece nas colecções:DBIO - Artigos em Revistas Internacionais / Articles in International Journals

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
Dionisio et al IRD 50(3) 2007.pdf399,53 kBAdobe PDFVer/Abrir


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Degois 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.