26 documents found, page 1 of 3
Trans-Arctic asymmetries, melting pots and weak species cohesion in the low-dis...
Neiva, J.; Assis, Jorge; Fragkopoulou, Eliza; Pearson, Gareth; Raimondi, Peter T.; Anderson, Laura; Krause-Jensen, Dorte; Marbà, Núria; Want, AndrewAmphiboreal taxa are often composed of vicariant phylogroups and species complexes whose divergence and phylogeographic affinities reflect a shared history of chronic isolation and episodic trans-Arctic dispersal. Ecological filters and shifting selective pressures may also promote selective sweeps, niche shifts and ecological speciation during colonization, but these are seldom considered at biogeographical sc...
The lush Fucales underwater forests off the Cilento Coast: An overlooked medite...
Rendina, Francesco; Falace, Annalisa; Alongi, Giuseppina; Buia, Maria Cristina; Neiva, J.; Appolloni, Luca; Marletta, Giuliana; Russo, Giovanni FulvioFucales (Phaeophyceae) are ecosystem engineers and forest-forming macroalgae whose populations are declining dramatically. In the Mediterranean Sea, Cystoseira sensu lato (s.l.)—encompassing the genera Cystoseira sensu stricto, Ericaria, and Gongolaria—is the most diverse group, and many species have been shown to be locally extinct in many areas, resulting in a shift toward structurally less complex habitats w...
DNA barcoding reveals cryptic diversity, taxonomic conflicts and novel biogeogr...
Neiva, J.; Bermejo, Ricardo; Medrano, Alba; Capdevila, Pol; Milla-Figueras, David; Afonso, Pedro; Ballesteros, Enric; Sabour, Brahim; Serio, DonatellaCystoseira sensu lato (s.l.) - encompassing the genera Cystoseira sensu stricto (s.s.), Ericaria and Gongolaria - is a diverse group of forest-forming brown macroalgae endemic to the warm-temperate North-east Atlantic. These algae have immense biogeographic and ecological significance and have been experiencing recent regional declines. Most Cystoseira s.l. display important morphological plasticity and can be ...
Fine-scale foraging segregation in a green turtle (Chelonia mydas) feeding grou...
Madeira, Fernando Miguel; Rebelo, Rui; Catry, Paulo; Neiva, J.; Barbosa, Castro; Regalla, Aissa; Patrício, Ana RitaGreen turtles (Chelonia mydas) are highly dependent on neritic foraging areas throughout much of their life. Still, knowledge of recruitment dynamics, foraging habits, and habitat use in these areas is limited. Here, we evaluated how the distribution and food preferences of green sea turtles from different life stages varied within a foraging aggregation. We focused on two islands in Guinea-Bissau, Unhocomo and...
Ocean currents shape the genetic structure of a kelp in southwestern Africa
Assis, Jorge; Neiva, J.; Bolton, John J.; Rothman, Mark D.; Gouveia, Licínia; Paulino, Cristina; Mohdnasir, Hasliza; Anderson, Robert J.Aim Drivers of extant population genetic structure include past climate-driven range shifts and vicariant events, as well as gene flow mediated by dispersal and habitat continuity. Their integration as alternative or complementary drivers is often missing or incomplete, potentially overlooking relevant processes and time scales. Here we ask whether it is the imprint of past range shifts or habitat connectivity ...
eDNA metabarcoding for diet analyses of green sea turtles (Chelonia mydas)
Díaz-Abad, Lucía; Bacco-Mannina, Natassia; Madeira, Fernando Miguel; Neiva, J.; Aires, Tania; Serrao, Ester; Regalla, Aissa; Patrício, Ana R.Understanding sea turtle diets can help conservation planning, but their trophic ecology is complex due to life history characteristics such as ontogenetic shifts and large foraging ranges. Studying sea turtle diet is challenging, particularly where ecological foraging observations are not possible. Here, we test a new minimally invasive method for the identifcation of diet items in sea turtles. We fngerprinted...
Development of tools to rapidly identify cryptic species and characterize their...
Mauger, Stéphane; Fouqueau, Louise; Avia, Komlan; Reynes, Lauric; Serrao, Ester; Neiva, J.; Valero, MyriamMarine ecosystems formed by kelp forests are severely threatened by global change and local coastline disturbances in many regions. In order to take appropriate conservation, mitigation, and restoration actions, it is crucial to identify the most diverse populations which could serve as a “reservoir” of genetic diversity. This requires the development of specifc tools, such as microsatellite markers to investig...
A fine-tuned global distribution dataset of marine forests
Assis, J.; Fragkopoulou, Eliza; Frade, Duarte; Neiva, J.; Oliveira, André; Abecasis, David; Faugeron, Sylvain; Serrao, EsterSpecies distribution records are a prerequisite to follow climate-induced range shifts across space and time. However, synthesizing information from various sources such as peer-reviewed literature, herbaria, digital repositories and citizen science initiatives is not only costly and time consuming, but also challenging, as data may contain thematic and taxonomic errors and generally lack standardized formats. ...
Genetic affinities and biogeography of putative Levantine-endemic seaweed Trept...
Mulas, Martina; Neiva, J.; Sadogurska, Sofia S.; Ballesteros, Enric; Serrao, Ester; Rilov, Gil; Israel, AlvaroCystoseira sensu lato (Ochrophyta) forests are important habitat formers in the Mediterranean Sea, but they have mostly been studied in the western basin where many species are under decline. In the eastern basin, where fewer species occur, Cystoseira rayssiae Ramon was described in the year 2000 as an endemic species based on morphological characteristics from herbaria samples collected on the Israeli coast. N...
Congruence between fine-scale genetic breaks and dispersal potential in an estu...
Nicastro, Katy; Assis, J.; Serrao, Ester; Pearson, Gareth; Neiva, J.; Valero, Myriam; Jacinto, Rita; Zardi, Gerardo, IGenetic structure in biogeographical transition zones can be shaped by several factors including limited dispersal across barriers, admixture following secondary contact, differential selection, and mating incompatibility. A striking example is found in Northwest France and Northwest Spain, where the estuarine seaweed Fucus ceranoides L. exhibits sharp, regional genetic clustering. This pattern has been related...