8 documents found, page 1 of 1
Temporal dynamics in diversity patterns of fish sound production in the Condor ...
Carriço, Rita; Silva, Mónica A.; Menezes, Gui M.; Vieira, Manuel; Bolgan, Marta; Fonseca, Paulo; Amorim, M. Clara P.Fish sounds are important components of Azorean soundscapes. Therefore, unraveling their patterns can contribute to a better assessment of local biodiversity dynamics. Passive Acoustic Monitoring (PAM) is a cost-effective, non-intrusive method providing long-term information regardless of weather or logistic conditions, which can be especially useful when monitoring remote areas. Using PAM, we assess temporal d...
Fishes of the Northern Mid-Atlantic Ridge collected during the MAR-ECO cruise i...
Porteiro, Filipe M. A.; Sutton, Tracey; Byrkjedal, Ingvar; Orlov, Alexy M.; Heino, Mikko; Menezes, Gui M.; Bergstad, Odd AkselRecords of the fishes from the northern Mid-Atlantic Ridge (MAR) (41⁰N - 60⁰N) sampled during two research cruises conducted in summer 2004 on the R/V G.O. Sars and M/S Loran are presented. The cruises were major sampling efforts carried out for the MAR-ECO project, i.e. the Census of Marine Life field project entitled “Patterns and Processes of the Ecosystems of the Northern Mid-Atlantic”. The investigation in...
Annotated list of fishes caught by the R/V ARQUIPÉLAGO off the Cape Verde archi...
Menezes, Gui M.; Tariche, Oksana; Pinho, Mário Rui; Duarte, Pedro N.; Fernandes, Ana; Aboim, Maria A.A prospective survey was carried out in October - November of 2000, in the Cape Verde archipelago, by the R/V ARQUIPÉLAGO. The main objective was to determine the species composition and relative abundance of the demersal fish resources living in the waters of the Cape Verde archipelago. A list of fishes caught with bottom longline during the survey is presented in this document, along with information about th...
Staining techniques for ageing tope shark, Galeorhinus galeus (Linnaeus, 1758),...
Duarte, Pedro N.; Silva, Alexandre A.; Menezes, Gui M.; Pinho, Mário RuiA vertebrae sample of tope shark, Galeorhinus galeus (Linnaeus, 1758), stratified by sizeclasses,was used to test between different staining techniques of enhancing vertebral growth ring visibility. Four techniques were tested: alizarin red, silver nitrate and cobalt nitrate staining, and the “deep-coned vertebrae” technique. The latter was discarded due to its unsuitability for tope shark vertebrae. The cobalt...
Diets of forkbeard (Phycis phycis) and conger eel (Conger conger) off the Azore...
Morato, Telmo; Solà, Encarnacion; Grós, Maria P.; Menezes, Gui M.The forkbeard, Phycis phycis, and conger eel, Conger conger, are two coastal species, with a wide bathymetric and geographical distribution. The longline fleet of the Azores catches these two important commercial species. Few studies on their diet composition were found in literature. Data were collected during the demersal cruise surveys that took place aboard the R/V “Arquipélago” during the spring of 1996 an...
First record of the spined pygmy shark, Squaliolus laticaudus (Smith & Radcliff...
Silva, Alexandre A.; Duarte, Pedro C.; Giga, Ana; Menezes, Gui M.A presente nota documenta a primeira observação do tubarão-anão, Squaliolus laticaudus (Smith & Radcliffe, 1912), nos Açores, estendendo a sua distribuição ocidental no Atlântico Nordeste até ao arquipélago. A ocorrência da espécie nos arquipélagos macaronésicos é igualmente discutida.; ABSTRACT: This paper reports the first observation of the spined pygmy shark, Squaliolus laticaudus, from the Azores, extendin...
Movements of a pelagic-phase wreckfish, Polyprion americanus (Schneider, 1801),...
Sedberry, George R.; Carlin, Joel L.; Menezes, Gui M.Vários chernes juvenis, Polyprion americanus (Schneider. 1801) foram capturados à superfície da água e marcados em vários locais próximos das ilhas do Grupo Central dos Açores. Um dos exemplares foi recapturado 3 meses depois ter sido marcado, a 217 km do local onde tinha sido libertado e a uma profundidade de 254 m. A recaptura deste espécime indica que o cherne passa para uma vida demersal quando atinge um co...
Umbraculum mediterraneum (Lamarck, 1819)(Mollusca: Opistobranchia, Umbraculomor...
Menezes, Gui M.A ocorrência de Umbraculum mediterraneum (Lamarck, 1819) é registada pela primeira vez para os Açores, baseada em dois espécimes capturados na ilha do Faial e na ilha de S. Miguel.; ABSTRACT: The occurrence of Umbraculum mediterraneum (Lamarck, 1819), is reported for the first time from the Azores based on two specimens collected at the islands of Faial and S. Miguel.