18 documents found, page 1 of 2
Small scale temporal patterns of recruitment and hatching of Atlantic horse mac...
Klein, Maria; Beveren, Elisabeth Van; Rodrigues, Diana Duarte; Serrão, Ester A.; Caselle, Jennifer E.; Gonçalves, Emanuel João; Borges, Rita AlexandraAtlantic horse mackerel (Trachurus trachurus, Linnaeus, 1758) is a highly exploited species, common throughout the North-East Atlantic. As a pelagic-neritic fish it typically occurs over the shelf from the surface to 200 m deep on sandy bottoms. Most research has focused on distributions of adults or early life stages (eggs and larvae) of this species in offshore waters and only a few studies have reported the ...
Larval development and allometric growth of the black-faced blenny Tripterygion...
Solomon, Farahnaz N.; Rodrigues, Diana Duarte; Gonçalves, Emanuel João; Serrão, Ester A.; Borges, Rita AlexandraLarval development and allometric growth patterns of the black-faced blenny Tripterygion delaisi are described from a larval series (body length, LB = 3·30-12·10 mm) caught by light traps at the Arrábida Marine Park, Portugal. Larvae of T. delaisi possess distinctive morphometric and meristic characteristics which can be used to identify this species from related taxa. Pigmentation is sparse but characteristic...
Larval development and allometric growth of the black-faced blenny Tripterygion...
Solomon, Farahnaz N.; Rodrigues, Diana Duarte; Gonçalves, Emanuel João; Serrão, Ester A.; Borges, Rita AlexandraLarval development and allometric growth patterns of the black-faced blenny Tripterygion delaisi are described from a larval series (body length, LB = 3·30-12·10 mm) caught by light traps at the Arrábida Marine Park, Portugal. Larvae of T. delaisi possess distinctive morphometric and meristic characteristics which can be used to identify this species from related taxa. Pigmentation is sparse but characteristic...
High interannual variability in connectivity and genetic pool of a temperate cl...
Klein, Maria; Teixeira, Sara; Assis, Jorge; Serrão, Ester A.; Gonçalves, Emanuel João; Borges, Rita AlexandraAdults of most marine benthic and demersal fish are site-attached, with the dispersal of their larval stages ensuring connectivity among populations. In this study we aimed to infer spatial and temporal variation in population connectivity and dispersal of a marine fish species, using genetic tools and comparing these with oceanographic transport. We focused on an intertidal rocky reef fish species, the shore c...
Early life history of larvae and early juvenile atlantic horse mackerel trachur...
Beveren, Elisabeth Van; Klein, Maria; Serrão, Ester A.; Gonçalves, Emanuel João; Borges, Rita AlexandraEarly life history traits (ELHTs) are key to understand recruitment patterns in marine animals. However, for reef fishes, studies on ELHTs are mainly focused on tropical systems and little is known for temperate reefs. In this study we used SMURFs (Standard Monitoring Units for the Recruitment of Reef Fishes) to collect fish in a temperate rocky reef system (Arrábida Marine Park, Portugal) on a weekly basis for...
Critical swimming speeds of wild-caught sand-smelt Atherina presbyter larvae
Faria, Ana Margarida; Borges, Rita Alexandra; Gonçalves, Emanuel JoãoSwimming abilities of wild-caught sand-smelt Atherina presbyter larvae were assessed as critical swimming speed (Ucrit) throughout ontogeny. The mean Ucrit increased with size, ranging from 3⋅6 to 18⋅7 cms−1, over the size range of 6⋅6–21⋅0mm LT. This indicates that at hatching A. presbyter larvae, far from being passive floaters, are already capable of active behaviours, which may influence their dispersal pat...
Biomares, a LIFE project to restore and manage the biodiversity of Prof. Luiz S...
Cunha, Alexandra H.; Erzini, Karim; Serrão, Ester A.; Gonçalves, Emanuel João; Borges, Rita Alexandra; Henriques, Miguel; Henriques, VictorThe Marine Park Prof. Luiz Saldanha, in the coast of Arrábida, is the first marine park in continental Portugal. This area is a Nature 2000 site and is considered to be a hotspot for European marine biodiversity. In 2005, the management plan of the park was implemented, ending several habitat menaces, thereby allowing an application to the LIFE—NATURE Programme. The LIFE-BIOMARES project aimed at the restoratio...
Short-term temporal fluctuation of very-nearshore larval fish assemblages at th...
Borges, Rita Alexandra; Vaz, J.; Serrão, Ester A.; Gonçalves, Emanuel JoãoUnderstanding processes affecting fish recruitment and population connectivity is of major importance to the management of Marine Protected Areas. Fluctuations in recruitment of coastal fishes can be affected by processes occurring during the early life stages such as the dispersal and availability of larvae. In nearshore temperate environments, there is a lack of knowledge about the patterns of larval supply o...
Larval development of Gobius xanthocephalus with genetic validation of larval i...
Monteiro, J.; Borges, Rita Alexandra; Robalo, Joana Isabel; Almada, Vítor Carvalho; Henriques, S.; Gonçalves, Emanuel JoãoLarval development of Gobius xanthocephalus with descriptions of the ontogeny of the main structures, changes in pigmentation patterns and allometric relationships are presented for the first time.No previous descriptions of G. xanthocephalus larvae are available and therefore field collected larvae were compared with larvae obtained under controlled conditions. The DNA of adults, juveniles and larvae was compa...
Vertical structure of very nearshore larval fish assemblages in a temperate roc...
Borges, Rita Alexandra; Beldade, Ricardo; Gonçalves, Emanuel JoãoSmall-scale vertical patterns of larval distribution were studied at a very nearshore larval Wsh assemblage, during the spring–summer period of several years, at two depth strata (surface and bottom) using sub-surface and bottom trawls. A total of 4,589 larvae (2,016 from surface samples and 2,573 from bottom samples) belonging to 62 taxa included in 22 families were collected. Most larvae belonged to coastal s...