29 documents found, page 1 of 3
Citizen science and expert judgement: A cost-efficient combination to monitor a...
Parretti, Paola; Monteiro, João Gama; Gizzi, Francesca; Martinez-Escauriaza, Roi; Alves, Filipe; Chebaane, Sahar; Almeida, Silvia; Pais, Miguel PessanhaMapping the distribution and evaluating the impacts of marine non-indigenous species (NIS) are two fundamental tasks for management purposes, yet they are often time consuming and expensive. This case study focuses on the NIS gilthead seabream Sparus aurata escaped from offshore farms in Madeira Island in order to test an innovative, cost-efficient combined approach to risk assessment and georeferenced dispersa...
Exploring bioactivities and peptide content of body mucus from the lusitanian t...
Cunha, Marta Fernandez; Coscueta, Ezequiel; Emilia Brassesco, M.; Marques, Rita; Neto, José; Almada, Frederico José Oliveira de; Goncalves, DavidIdentifying bioactive molecules from marine organisms is still vastly understudied. Fish remain an untapped source of bioactive molecules, even when considering species whose toxicity to other fish species has been noticed before. We assessed potential applications of crude body mucus of the Lusitanian toadfish (Halobratachus didactylus) and characterized its peptide fraction composition. Mucus samples from thr...
Methods for the collection of fish mucus: A systematic review
Fernandez Cunha, Marta; Coscueta, Ezequiel; Emilia Brassesco, M.; Almada, Frederico José Oliveira de; Goncalves, David; Pintado, Maria ManuelaThe aquatic environment holds a vast source of organisms that provide numerous opportunities to bioprospect new molecules. Notably, fish are producers of an epidermal mucus that offers protection against pathogens, making it a promising source of bioactive molecules. This source of molecules, however, has yet to be thoroughly explored, and particularly, optimization of methods for collection and study is needed...
Genetic hypervariability of a Northeastern Atlantic venomous rockfish
Francisco, Sara M.; Castilho, Rita; Lima, Cristina S.; Almada, Frederico José Oliveira de; Rodrigues, Francisca; Šanda, Radek; Vukic, JasnaBackground: Understanding the interplay between climate and current and historical factors shaping genetic diversity is pivotal to infer changes in marine species range and communities’ composition. A phylogeographical break between the Atlantic and the Mediterranean has been documented for several marine organisms, translating into limited dispersal between the two basins. Methods: In this study, we screened t...
Effect of the algal alkaloid caulerpin on neuropeptide Y (NPY) expression in th...
Magliozzi, Laura; Maselli, Valeria; Almada, Frederico José Oliveira de; Di Cosmo, Anna; Mollo, Ernesto; Polese, GianlucaRecent studies have suggested that Mediterranean indigenous fish species are affected by bioactive metabolites coming from marine invasive species via food web interactions. In particular, both physiological and behavioural changes in the white sea bream Diplodus sargus were related to caulerpin (CAU), a bisindolic alkaloid particularly abundant in the invasive alga Caulerpa cylindracea, on which the fish activ...
H NMR spectroscopy and MVA to evaluate the effects of Caulerpin-Based diet on d...
Del Coco, Laura; Felline, Serena; Girelli, Chiara; Angilè, Federica; Magliozzi, Laura; Almada, Frederico José Oliveira de; D’Aniello, BiagioThe biological invasion of the green algae Caulerpa cylindracea represents a serious scientific and public issue in the Mediterranean Sea, essentially due to strong modifications both to habitat structure and native benthic communities. Although alterations in health status and changes in flesh quality of some marine species (dietary exposed to C. cylindracea) have been observed, no studies on cause-effect rela...
Identification of adult and juvenile Atherina presbyter Cuvier, 1829 in a marin...
Almada, Frederico José Oliveira de; Carpi, Piera; Carlos, Fábio Ferreira; Francisco, Sara Martins; Faria, Ana Margarida; Lungu, RuxandaA simple PCR-RFLP consisting in the digestion of a fragment of the 12S ribosomal RNA (12SrRNA) with species-specific restriction enzymes (MboII and HinfI) was developed to distinguish northeastern Atlantic species in the genus Atherina. Unambiguous identification of morphologically similar sympatric species is frequently difficult, especially when younger specimens are included in the analysis. Genetic and morp...
Historical gene flow constraints in a northeastern atlantic fish: Phylogeograph...
Almada, Frederico José Oliveira de; Francisco, Sara Martins; Lima, Cristina Silva; Fitzgerald, Richard; Mirimin, Luca; Villegas-Ríos, DavidThe distribution and demographic patterns of marine organisms in the north Atlantic were largely shaped by climatic changes during the Pleistocene, when recurrent glacial maxima forced them to move south or to survive in northern peri-glacial refugia. These patterns were also influenced by biological and ecological factors intrinsic to each species, namely their dispersion ability. The ballan wrasse (Labrus ber...
Cryptic effects of biological invasions: Reduction of the aggressive behaviour ...
Magliozzi, Laura; Almada, Frederico José Oliveira de; Robalo, Joana Isabel; Mollo, Ernesto; Polese, Gianluca; Gonçalves, Emanuel João; Felline, SerenaThe invasive green alga Caulerpa cylindracea has become an important component of the diet of the Mediterranean white seabream Diplodus sargus. As a consequence of this ªexotic dietº, the algal bisindolic alkaloid caulerpin accumulates in the fish tissues. Although the compound shows structural similarity to endogenous indolamines that modulate animal behaviour, the potential impact of caulerpin on fish behavio...
Not so sluggish : The success of the Felimare picta complex (Gastropoda, Nudibr...
Almada, Frederico José Oliveira de; Levy, André; Robalo, Joana IsabelThe molecular phylogeny of the Atlanto-Mediterranean species of the genus Felimare, particularly those attributed to the species F. picta, was inferred using two mitochondrial markers (16S and COI). A recent revision of the Chromodorididae clarified the taxonomic relationships at the family level redefining the genus Felimare. However, conflicting taxonomic classifications have been proposed for a restrict grou...