Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/5392
DC FieldValueLanguage
dc.contributor.authorGonçalves, S. C.-
dc.contributor.authorMarques, J. C.-
dc.contributor.authorPardal, M. A.-
dc.contributor.authorBouslama, M. F.-
dc.contributor.authorEl Gtari, M.-
dc.contributor.authorCharfi-Cheikhrouha, F.-
dc.date.accessioned2008-09-01T15:41:29Z-
dc.date.available2008-09-01T15:41:29Z-
dc.date.issued2003en_US
dc.identifier.citationEstuarine, Coastal and Shelf Science. 58:4 (2003) 901-916en_US
dc.identifier.urihttps://hdl.handle.net/10316/5392-
dc.description.abstractThe biology, population dynamics, and production of Talorchestia brito were studied at two sandy beaches located on the Atlantic (Portugal) and on the Mediterranean (Tunisia) coasts, respectively. The seasonal variation in abundance and the overall densities were similar in both populations. Reproduction occurred from February to September in the Atlantic, and from March to early November in the Mediterranean. The sex ratio was male biased in the Atlantic, and female biased in the Mediterranean. Based on data from the Atlantic population, both abundance and the proportion of reproductive females were positively correlated with temperature, while the proportion of juveniles in the population was positively correlated with temperature and sediment moisture. On average, individuals from the Atlantic were larger than the ones from the Mediterranean. Life span was estimated at six to nine months in the Atlantic, and five to eight months in the Mediterranean. Talorchestia brito was shown to be a semiannual species, with iteroparous females producing two broods per year, and exhibited a bivoltine life cycle. The minimum age required for males' and females' sexual differentiation and for female sexual maturation was shorter in the Mediterranean. Growth production (P) was estimated at 0.19 g m-2 y-1 ash free dry weight (AFDW; 4.3 kJ m-2 y-1) in the Atlantic population, and 0.217 g m-2 y-1 AFDW (4.9 kJ m-2 y-1) in the Mediterranean one. Elimination production (E) was estimated at 0.35 g m-2 y-1 AFDW (7.9 kJ m-2 y-1) in the Atlantic, and 0.28 g m-2 y-1 AFDW (6.3 kJ m-2 y-1) in the Mediterranean. The average annual biomass () (standing stock) was estimated at 0.032 g m-2 in the Atlantic beach, and 0.029 g m-2 in the Mediterranean one, resulting, respectively, in ratios of 5.9 and 7.5 and ratios of 10.8 and 9.6. Like other talitrids, T. brito exhibited geographic variation in morphometrical characteristics, sex ratio, growth rates, life span, and reproduction period, with the Atlantic population presenting a slower life history.en_US
dc.description.urihttp://www.sciencedirect.com/science/article/B6WDV-49W2MK0-8/1/00a2b4f13d40cd8c6d6f3968e658134fen_US
dc.format.mimetypeaplication/PDFen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectTalorchestia britoen_US
dc.subjectbiologyen_US
dc.subjectpopulation dynamicsen_US
dc.subjectgeographical variationen_US
dc.subjectAtlanticen_US
dc.subjectMediterraneanen_US
dc.subjectsandy beachesen_US
dc.titleComparison of the biology, dynamics, and secondary production of Talorchestia brito (Amphipoda, Talitridae) in Atlantic (Portugal) and Mediterranean (Tunisia) populationsen_US
dc.typearticleen_US
item.openairetypearticle-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.grantfulltextopen-
item.fulltextCom Texto completo-
crisitem.author.researchunitMARE - Marine and Environmental Sciences Centre-
crisitem.author.researchunitMARE - Marine and Environmental Sciences Centre-
crisitem.author.researchunitCFE - Centre for Functional Ecology - Science for People & the Planet-
crisitem.author.orcid0000-0003-1970-0181-
crisitem.author.orcid0000-0001-8865-8189-
crisitem.author.orcid0000-0001-6048-7007-
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais
Files in This Item:
File Description SizeFormat
file8e4d4f9dc1b34c21a6446082990a7ea9.pdf790.47 kBAdobe PDFView/Open
Show simple item record

Google ScholarTM

Check


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