7 documents found, page 1 of 1
Abundance and population structure of Plesionika narval (Fabricius, 1787) in th...
Sousa, R.; Pinho, M. R.; Delgado, J.; Pinto, A. R.; Biscoito, M.; Dellinger, T.; Henriques, P.Analysis of abundance and population structure of Plesionika narval was performed on data concerning 5,255 specimens obtained from 62 fishing sets carried out off the Madeira archipelago (Northeastern Atlantic) between 2004 and 2008 in a depth range from 101 to 350 m. Abundance ranged from 0.01 to 19.74 specimens-per-trap and significant differences were found between seasons, probably as a result of an increme...
Prospective study of the fishery of the shrimp Plesionika narval (Fabricius, 17...
Sousa, R.; Pinho, M. R.; Delgado, J.; Biscoito, M.; Pinto, A. R.; Dellinger, Thomas; Gouveia, L.; Carvalho, D.; Henriques, P.Several experimental surveys were carried out in the Northeastern Atlantic, Madeira archipelago from 1991 to 2008 to explore new fisheries resources. This study examined the selectivity of bottom and floating traps and the analysis of yield-per-recruit (YPR) and biomass-per-recruit (BPR) providing helpful insight to the management of the shrimp Plesionika narval. A total of 28,262 specimens were sampled and the...
Confirmation of the occurrence of the golden grey mullet, Liza aurata (Risso, 1...
Almeida, Pedro R.; Pedro, S.; Biscoito, M.; Almeida, A.The occurrence of Liza ramada (Risso 1810) is confirmed for the Azores. The specimen was collected in 1971 at 20 m depth, during the BIAÇORES cruise and is an 8+ year old male with a total length of 531 mm. The additional observation of juvenile specimens collected in 1990 in Santa Maria Island has not only reconfirmed the presence of this species in this archipelago, but also indicated successful reproduction ...
Metal concentrations and metallothionein-like protein levels in deep-sea fishes...
Company, Rui; Felícia, H.; Serafim, A.; Almeida, A.J.; Biscoito, M.; Bebianno, Maria JoãoThe knowledge of metal contamination in deep-sea fishes living in the surroundings of hydrothermal vents is very scarce, along with the detoxification mechanisms that allow them to live near one of the most metal contaminated marine environments. Six deep-sea fish species, although not vent endemic were collected near three Mid-Atlantic Ridge (MAR) hydrothermal vents (Menez Gwen, Lucky Strike and Rainbow) and t...
Suspected viral erythrocytic necrosis (VEN) in the intertidal fish Mauligobius ...
Eiras, J. C.; Costa, G.; Biscoito, M.; Davies, A. J.Suspected viral erythrocytic necrosis (VEN) was detected in two specimens of the intertidal fish Mauligobius maderensis (Teleostei: Gobiidae) from Madeira, Portugal. While one host was lightly infected, the other showed intraerythrocytic cytoplasmic inclusions within all mature erythrocytes examined. The inclusions were round to oval, 0-8-2-0 |im in diameter, and most were associated with dense eosinophilic gra...
Luis Vieira Caldas Saldanha: passion for the sea
Ré, P.; Almeida, A. J.; Biscoito, M.Após doença prolongada, faleceu no dia 16 de Novembro de 1997 o Professor Doutor Luiz Vieira Caldas Saldanha, Professor Catedrático do Departamento de Zoologia e Antropologia da Faculdade de Ciências da Universidade de Lisboa e responsável pelo Laboratório Marítimo da Guia. O desaparecimento do Prof. Luiz Saldanha constituiu, para além de um choque para os seus mais directos colaboradores, colegas e alunos, uma...
New zoarcid fish species from deep-sea hydrothermal vents of the Atlantic
Biscoito, M.; Segonzac, M.; Almeida, A. J.