7 documents found, page 1 of 1
The impact of climate Change on bivalve farming: combined effect of temperature...
Rato, Ana; Joaquim, Sandra; Matias, Ana Margarete; Roque, Cláudia; Marques, António; Matias, DomitíliaEuropean clam (Ruditapes decussatus) is one of the most relevant emergent bivalve species from the aquaculture sector in Europe with high economic value. Climate changes represent a potential limiting factor to this activity, directly interfering with the survival and behavior of bivalves. Severe fluctuations in temperature along with periods of heavy rainfall or periods of drought that significantly change the...
Reproductive cycle of the European clam Ruditapes decussatus from Óbidos Lagoon...
Machado, Daniela; Baptista, Teresa; Joaquim, Sandra; Anjos, Catarina; Mendes, Susana; Matias, Ana Margarete; Matias, DomitíliaIn Portugal, the European clam (Ruditapes decussatus) is an important commercial resource. Óbidos Lagoon is a strong candidate as a cultivation area to increase European clam exploitation. However, the reproductive biology of this population has not been described. In this work, the reproductive cycle of R. decussatus was characterized by determining gonadal development stages, gonad index, condition index, and...
Broodstock conditioning of the Portuguese oyster (Crassostrea angulata, Lamarck...
Anjos, Catarina; Baptista, Teresa; Joaquim, Sandra; Mendes, Susana; Matias, Ana Margarete; Moura, Paula; Simões, Tiago; Matias, DomitíliaThe Portuguese oyster Crassostrea angulata shows great potential in oyster farming. The conservation of pure populations of this species is important for production diversification and biodiversity preservation. In this way, the zootechnological development for seed hatchery production is extremely important. Broodstock conditioning is a key step in the process of rearing bivalves in a hatchery. Many factors re...
The effect of density in larval rearing of the pullet carpet shell Venerupis co...
Joaquim, Sandra; Matias, Domitília; Matias, Ana Margarete; Leitão, Alexandra; Soares, Florbela; Cabral, Marina; Chícharo, Luís; Gaspar, MiguelThe pullet carpet shell Venerupis corrugata is an economically valuable species in several European countries, however, nowadays stocks are under high fishing pressure. Hatchery production of juveniles for release is a major contributor to strengthen the stock and consequently improve the sustainability of the natural stocks. This study aimed to determine the feasibility of rearing V. corrugata larvae with diff...
Relationships between broodstock condition, oocyte quality, and 24h D-larval su...
Joaquim, Sandra; Matias, Domitília; Matias, Ana Margarete; Gonçalves, Rui; Vera, Cátia; Chícharo, Luís; Gaspar, MiguelVenerupis corrugata is commercially exploited in Europe. Over-fishing and recruitment failure is causing the decline of its populations and stock sustainability. Knowledge of this species reproduction is paramount to establish hatchery production of juveniles for restoring natural beds. This work aimed to find a relationship between broodstock condition, oocyte quality, and viability of 24h D-larvae. Adult spec...
New species in aquaculture: are the striped venus clam Chamelea gallina (Linnae...
Joaquim, Sandra; Matias, Domitilia; Matias, Ana Margarete; Gonçalves, Rui; Chicharo, Luis; Gaspar, MiguelThe surf Spisula solida and the striped venus Chamelea gallina clams support important fisheries in Europe. These fisheries have been affected by inter-annual fluctuations in stock abundance and recruitment failures. Aquaculture could contribute to address these problems through the production of larvae or juveniles for stock-enhancement programmes. In the present study, the prerequisites to produce these speci...
Reproductive activity and biochemical composition of the pullet carpet shell Ve...
Joaquim, Sandra; Matias, Domitília; Matias, Ana Margarete; Moura, Paula; Arnold, William S.; Chícharo, Luís; Baptista Gaspar, MiguelThe present study characterizes the reproductive cycle of Venerupis senegalensis (=V. pullastra) from Ria de Aveiro (Portugal) as well as its nutrient storage and exploitation strategy. The reproductive cycle followed a seasonal cycle that correlated negatively with sea surface temperature, and comprised a ripe stage in winter followed by a spawning period that began in late winter and ended in the early summer...