12 documents found, page 1 of 2
Resolving the population structure and demographic history of the European anch...
Martin Pujolar, José; Gardiner, Courtney E. C.; Heyden, Sophie von der; Robalo, Joana I.; Castilho, Rita; Lopes da Cunha, Regina; Henriques, RominaThe spatial distribution of the European anchovy has expanded in the northern part of its range in the Northeast Atlantic in recent decades. However, whether this results from a northward range shift of southern conspecifics or the expansion of a local northern population is unknown. Using for the first time whole-genome sequencing, we explore current patterns of genetic diversity and population sub-structuring...
Sex‐linked differentiation in commercially exploited fishes: rethinking populat...
Gardiner, Courtney E. C.; Heyden, Sophie von der; Matthee, Conrad A.; Nielsen, Einar E.; Pujolar, José M.; Robalo, Joana I.; Castilho, RitaUnderstanding how genomic structure links with ecological and evolutionary processes is critical for forecasting species responses to dynamic marine environments, especially in commercially exploited marine species, where fishing pressure can impact genomic integrity. Here we investigate Merluccius paradoxus, a commercially exploited demersal fish that appears to be undergoing a range expansion along the southe...
THE IMPORTANCE OF BASELINE HEALTH SURVEILLANCE EFFORTS IN FRESHWATER FISH CONSE...
Grilo, Miguel L.; Sousa-Santos, Carla; Robalo, Joana I.; Oliveira, ManuelaFreshwater fish species are experiencing the highest decline among vertebrates in this century. Although a great effort has been made to identify and tackle threats to the conservation of this taxa, several knowledge gaps still exist particularly for noncommercial endangered species, including considerations regarding fish health status. These species face deteriorating environmental conditions in their natural...
Genomics goes deeper in fisheries science: The case of the blackspot seabream (...
Cunha, Regina L.; Robalo, Joana I.; Francisco, Sara M.; Farias, Inês; Castilho, Rita; Figueiredo, IvoneRecent advances in genomics are an essential contributor to the assessment of fish stocks by providing a finescale identification of the species' genetic boundaries. The blackspot seabream, Pagellus bogaraveo, is a commercial sparid distributed across the northeast (NE) Atlantic and the Mediterranean. Within the NE Atlantic, three P. bogaraveo stocks are currently defined: Azores; Atlantic Iberian waters; Celti...
Aeromonas spp. prevalence, virulence, and antimicrobial resistance in an ex sit...
Grilo, Miguel; Amaro, Guadalupe; Chambel, Lelia; Marques, Carolina S.; Marques, Tiago A.; Gil, Fátima; Sousa-Santos, Carla; Robalo, Joana I.Ex situ breeding programs are important conservation tools for endangered freshwater fish. However, developing husbandry techniques that decrease the likelihood of disease, antimicrobial resistance, and virulence determinants acquisition during this process is challenging. In this pilot study, we conducted a captivity experiment with Portuguese nase (Iberochondrostoma lusitanicum), a critically endangered leuci...
Three mitochondrial lineages and no Atlantic-Mediterranean barrier for the bogu...
Cunha, Regina L.; Faleh, Abderraouf Ben; Francisco, Sara; Šanda, Radek; Vukić, Jasna; Corona, Luana; Dia, Mamadou; Glavičić, Igor; Kassar, AbderrahmaneMarine species exhibiting wide distributional ranges are frequently subdivided into discrete genetic units over limited spatial scales. This is often due to specific life-history traits or oceanographic barriers that prevent gene flow. Fine-scale sampling studies revealed distinct phylogeographic patterns in the northeastern Atlantic and the Mediterranean, ranging from panmixia to noticeable population genetic ...
Life in a drop: sampling environmental DNA for marine fishery management and ec...
Gilbey, John; Carvalho, Gary; Castilho, Rita; Coscia, Ilaria; Coulson, Mark W.; Dahle, Geir; Derycke, Sofie; Francisco, Sara M.; Helyar, Sarah J.Science-based management of marine fisheries and effective ecosystem monitoring both require the analysis of large amounts of often complex and difficult to collect information. Legislation also increasingly requires the attainment of good environmental status, which again demands collection of data to enable efficient monitoring and management of biodiversity. Such data is traditionally obtained as a result of...
Genetic hypervariability of a Northeastern Atlantic venomous rockfish
Francisco, Sara M.; Castilho, Rita; Lima, Cristina S.; Almada, Frederico; Rodrigues, Francisca; Šanda, Radek; Vukić, Jasna; Pappalardo, Anna MariaBackground: 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 hylogeographical 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 th...
Against all odds: a tale of marine range expansion with maintenance of extremel...
Robalo, Joana I.; Francisco, Sara M.; Vendrell, Catarina; Lima, Cristina S.; Pereira, Ana; Brunner, Benedikt; Dia, Mamadou; Gordo, LeonelThe displacement of species from equatorial latitudes to temperate locations following the increase in sea surface temperatures is among the significant reported consequences of climate change. Shifts in the distributional ranges of species result in fish communities tropicalisation, i.e., high latitude colonisations by typically low latitude distribution species. These movements create new interactions between...
Mito-nuclear sequencing is paramount to correctly identify sympatric hybridizin...
Sousa-Santos, Carla; Pereira, Ana M.; Branco, Paulo; Costa, G.J.; Santos, José M.; Ferreira, Teresa; Lima, Cristina S.; Doadrio, IgnacioBackground. Hybridization may drive speciation and erode species, especially when intrageneric sympatric species are involved. Five sympatric Luciobarbus species—Luciobarbus sclateri (Günther, 1868), Luciobarbus comizo (Steindachner, 1864), Luciobarbus microcephalus (Almaça, 1967), Luciobarbus guiraonis (Steindachner, 1866), and Luciobarbus steindachneri (Almaça, 1967)—are commonly identified in field surveys b...