You've disabled JavaScript in your web browser. However, in many studies that seek to address differences in performance of vessels, the contribution of the skipper is often not quantified, or the influencing factors are not explained.
Over-fishing and recruitment failure is causing the decline of its populations and stock sustainability. As with any new research area, it poses new problems and requires new tools. Is metal contamination responsible for increasing aneuploidy levels in the Manila clam Ruditapes philippinarum?
In 1990, I completed a degree in marine biology and fisheries at the University of Algarve (Portugal) and undertook my PhD at the same university. A third-party browser plugin, such as Ghostery or NoScript, is preventing JavaScript from running.
Instituto Português do Mar e da Atmosfera. Only verified researchers can join ResearchGate and send messages to other members. Livro “Pequena pesca na costa continental portuguesa", Age and growth in three populations of Dosinia exoleta (Bivalvia: Veneridae) from the Portuguese coast, Superior proteome stability in the longest lived animal, The influence of catch quotas on the productivity of the Portuguese bivalve dredge fleet. Different species were harvested over the years, such as the oyster (Crassostrea spp.
Miguel Belbut Gaspar. Two techniques were compared to ascertain the most suitable method for ageing D. exoleta. In order to satisfy fish demand, the potential of offshore aquaculture is becoming a new paradigm worldwide in terms of finfish and shellfish production to fulfill the gap left by a stagnating fisheries catch. Distinguished with the "Investigação em Pesca" award by Câmara Municipal de Olhão. of the southern Portuguese coast, the most south-western part of Size at sex change and reproductive cycle of the limpets Patella vulgata and Patella ulyssiponensis (Mollusca: Patellogastropoda) from intertidal rocky shores of the Algarve coast (southern Portugal), A multimetric approach to evaluate offshore mussel aquaculture effects on the taxonomical and functional diversity of macrobenthic communities, Recent and Consecutive Records of the Atlantic Blue Crab (Callinectes sapidus Rathbun, 1896): Rapid Westward Expansion and Confirmed Establishment along the Southern Coast of Portugal, Bycatch, discards and survival rates in the small‐scale cuttlefish trap fishery on sandy bottoms off the Algarve coast (southern Portugal), Reproductive cycle of the commercially harvested sea urchin ( Paracentrotus lividus ) along the western coast of Portugal, Catches of Sepia officinalis in the small-scale cuttlefish trap fishery off the Algarve coast (southern Portugal). Seguimento de embarcações da pequena pesca em tempo real. As with any new research area, it poses new problems and requires new tools. The Manila clam Ruditapes philippinarum is a bivalve mollusc, native to Asia, with a wide distribution through the Indian-Pacific region. An index, which includes biological, conservation, socioeconomic, and management criteria, was created for this purpose: the “Metier Sustainability Index” (MSI25).
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The nutritional and caloric value of the Manila clam will be determined to provide support for the product's valorization. Knowledge of this species reproduction is paramount to establish hatchery production of juveniles for restoring natural beds. This site should not be used to make decisions about employment, tenant screening, or any purpose covered by the FCRA.The records were matched using first and last name only. Atlantic, however it is a non-indigenous species across Europe since 1900, among Address review: HEAT/HOT WATER ENTIRE BUILDING The Department of Housing Preservation and Development responded to a complaint of no heat or hot water and was advised by a tenant in the building that heat and hot water had been restored. Growth marks on the shell surface and acetate peel replicas of sec... Bivalve mollusks have several unique traits, including some species with exceptionally long lives, others with very short lives, and the ability to determine the age of any individual from growth rings in the shell. These quotas can be set yearly, monthly, weekly or daily. The top state of residence is California, followed by Florida. Along the northern coast of Portugal, P. henslowii is an important species discarded in beam trawl fishery. Although the bivalve dredge used on the Algarve coast (southern Portugal) is highly selective for the target species , in some periods of the year the bycatch can exceed the catch of the commercial species. It is considered one of the most important artisanal fisheries, essentially due to the number of fishermen and vessels involved and to the high volume and value of the catches. This study examines sediment distribution patterns in the Southeastern Algarve inner shelf (southern Portugal), an area characterized by marked variations in its coastal environment and low continental supply of sediments. 2013. The striped venus Chamelea gallina is an important commercial bivalve species in Europe. The Manila clam Ruditapes philippinarum (Adams & Reeve, 1850) was introduced in several regions worldwide where it is permanently established. Harvested populations of the sea urchin (Paracentrotus lividus) from the northwestern (Carreço) and southwestern (Aljezur) coasts of Portugal were surveyed to describe the species reproductive cycle and assess possible relationships with geographical location and seawater temperature. Species description was based on 223 individuals (22 juveniles, 60 males and 141 females), comprising diverse developmental stages (juveniles II, males I and II, preparatory, copulatory and intermediate females... Non-indigenous species (NIS) are increasingly widespread and abundant in coastal areas, hence being considered indicators to assess the environmental status of marine waters under the Marine Strategy Framework Directive. A total of 11 morphometric parameters (eight linear variables: shell length, shell width, total aperture length, aperture le... Four Donax species, D. semistriatus, D. trunculus, D. variegatus and D. vittatus, are found on European coasts. Reproductive cycle and size at first maturity of the peppery furrow shell Scrobicularia plana (da Costa, 1778) in Ria de Aveiro lagoon (NW Portugal), Habitat structure shaping megabenthic communities inhabiting subtidal soft bottoms along the Algarve coast (Portugal), Gametogenic cycle of the rough cockle Acanthocardia tuberculata (Mollusca: Bivalvia) in the M’diq Bay (SW Mediterranean Sea), Relationships between broodstock condition, oocyte quality, and 24 h D-larval survival during the spawning season of the pullet carpet shell Venerupis corrugata (Gmelin, 1791), MAKING USE OF THE LATEST EARTH OBSERVATION DATASETS FROM COPERNICUS PROGRAMME -THE SAFI EU-FP7 PROJECT, Science, technology and society initiative to minimise unwanted catches in European fisheries – the MINOUW Project (EU H2020 RIA), Evaluating the influence of skipper skills in the performance of Portuguese artisanal dredge vessels, Guia de Boas Práticas Para a Apanha de Perceve na Área do PNSACV: desde a actividade da apanha até à comercialização do produto, Species name, classification (WORMS), abundance and biomass of the megabenthic communities of the Algarve, supplement to: Rufino, Marta M; Pereira, Alexandre; Pereira, F; Moura, P; Vasconcelos, P; Gaspar, M (2016): Habitat structure shaping megabenthic communities inhabiting subtidal soft-bottoms along the Algarve coast (Southern Portugal). other world regions. The present study assessed the metal genotoxicity potential at chromosome-level in the bivalve Ruditapes philippinarum collected along different areas of the Tagus estuary. Vanessa Mai mit Miguel Gaspar(er singt wieder) bei der Autogrammstunde in Berlin am 25.1.20 - Duration: ... weil Eltern und Schwester am Konzert waren. This study estimated the age of Hexaplex trunculus (Gastropoda: Muricidae) by analysing operculum growth marks. The influence of coastal processes on inner shelf sediment distribution: The Eastern Algarve Shelf (Southern Portugal), Small scale fisheries in Europe: A comparative analysis based on a selection of case studies, A Métier-Sustainability-Index (MSI25) to evaluate fisheries components: assessment of cases from data-poor fisheries from southern Europe, The effect of depth and sediment type on the spatial distribution of shallow soft-bottom amphipods along the southern Portuguese coast, A review of the application of driving forces – Pressure – State – Impact – Response framework to fisheries management, Polybius henslowii Leach 1820: a discard species of beam trawl fishery. The present study reports the first record of the Monrovia doctorfish, Acanthurus monroviae (Steindachner, 1876) in the Algarve coast (southern Portugal). These surveys comprise often more than one hundred of sampling stations and cover large geographical areas. It is intensively caught in Europe, being highly appreciated as seafood. Specimens were collected monthly from September 2013 to December 2015 during fishing surveys using bivalve dredges. A female (257 mm TL) was caught 21 April 2016 off the beach of Olhos d’Água by a small-scale fishing boat operating bottom-set gill nets at approximately 15 m depth. The gonadal development was determined by means of standard histological techniques, mean oocyte diameters and a condition index. The diet and filtration rates of the Manila clam and other species in relation to which it may have a competitive potential will also be studied. Portugal is an important area of commercial exploitation of the pullet carpet shell clam Venerupis corrugata (Gmelin, 1791). The purple dye murex Bolinus brandaris is a commercially valuable gastropod in Portugal. These fisheries have been affected by inter-annual fluctuations in stock abundance and recruitment failures. Our ethnicity data indicates the majority is Hispanic.
Reproductive cycle and condition index of the Manila clam Ruditapes philippinarum (Adams & Reeve, 1850) in Ria de Aveiro lagoon (NW Portugal). This study describes the reproductive cycle of the common limpet (Patella vulgata) and rough limpet (Patella ulyssiponensis) from the Algarve coast (southern Portugal).
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