Repository logo
 
Publication

Feeding ecology of Nereis diversicolor (O.F. Müller) (Annelida, Polychaeta) on estuarine and lagoon environments in the southwest coast of Portugal

dc.contributor.authorCosta, Pedro Fidalgo e
dc.contributor.authorOliveira, Rui Filipe
dc.contributor.authorFonseca, Luís Cancela da
dc.date.accessioned2012-03-17T13:09:00Z
dc.date.available2012-03-17T13:09:00Z
dc.date.issued2006
dc.description.abstractA ecologia alimentar de Nereis diversicolor (O.F. Müller, 1776) (Annelida: Polychaeta) foi estudada num período de 14 meses em três sistemas estuarino-lagunares da costa Sudoeste de Portugal (Odeceixe, Aljezur e Carrapateira). A análise do conteúdo digestivo revelou uma variação da dieta de acordo com os locais estudados, época do ano e com o tamanho dos indivíduos. Não houve diferenças nos conteúdos de machos e fêmeas. Foram encontrados em todas as estações amostradas um total de trinta itens, mas apenas cinco revelaram uma ocorrência superior à 1%. Estes foram: muco (56.3%), areia (17.6%), detritos vegetais (10.7%), Nereididae (7.7%) e Corophium sp. (1.8%). N. diversicolor evidenciou hábitos filtradores, em todas as estações amostradas embora na Carrapateira tenham sido detectadas percentagens de carnivoría ligeiramente superiores às encontradas em Odeceixe e Aljezur. O principal conteúdo do tracto digestivo foi o muco (complexo alimentar que aglutina matéria orgânica, bactérias, fungos e fitoplâncton). ------ ABSTRACT ------ The feeding ecology of Nereis diversicolor (O. F. Müller, 1776) (Annelida: Polychaeta) was studied over 14 months at three estuarine-lagoon systems of the Southwest coast of Portugal (Odeceixe, Aljezur and Carrapateira). The analyses of digestive tract revealed that diet change according to site, period of the year and individual sizes. There are no differences in the digestive contents between sexes. In all sampling stations a total of thirty items were found, but only five shown an occurrence superior to 1%. These were: mucus (56.3%), sand (17.6%), vegetable detritus (10.7%), Nereididae (7.7%) and Corophium sp. (1.8%). N. diversicolor was detected in all sampling stations with a filter-feeding behaviour, although in Carrapateira there is evidence of slightly higher carnivore behaviour than in Odeceixe and Aljezur. Mucus (a food complex including organic matter, bacteria, fungi and phytoplankton) was the main gut content.por
dc.identifier.citationPan-American Journal of Aquatic Sciences, 1 (2), 104-113por
dc.identifier.issn1809-9009
dc.identifier.urihttp://hdl.handle.net/10400.12/1274
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherPan-American Journal of Aquatic Sciencespor
dc.subjectPoliquetaspor
dc.subjectMinhocas-da-pescapor
dc.subjectComportamento alimentarpor
dc.subjectDietapor
dc.subjectSistemas salobrospor
dc.subjectSeawormspor
dc.subjectCommon ragwormpor
dc.subjectFeeding behaviourpor
dc.subjectDietpor
dc.subjectBrackish environmentspor
dc.titleFeeding ecology of Nereis diversicolor (O.F. Müller) (Annelida, Polychaeta) on estuarine and lagoon environments in the southwest coast of Portugalpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceBrasilpor
oaire.citation.endPage113por
oaire.citation.startPage104por
oaire.citation.titlePan-American Journal of Aquatic Sciencespor
rcaap.rightsopenAccesspor
rcaap.typearticlepor

Files

Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
PAJAS 1(2) 104-113.pdf
Size:
201.73 KB
Format:
Adobe Portable Document Format
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description: