25 documents found, page 1 of 3
A new species of the genus Squalius (Leuciscidae, Actinopterygii) from the Sado...
Mendes, Sofia L.; Perea, Silvia; Sousa, Vitor C; Sousa-Santos, Carla; Doadrio, IgnacioA new species of the genus Squalius (Leuciscidae, Actinopterygii) from the Sado River basin in Portugal. A new species, Squalius caetobrigus sp. nov., is described based on morphological and genetic traits. Squalius caetobrigus sp. nov. can be distinguished from other Squalius species through a combination of morphometric, meristic and genetic characteristics: 39-42 (X=40.7; X̃=41) canaliculate scales on the la...
Descripción de dos especies nuevas del género Squalius Bonaparte, 1837 (Actinop...
Doadrio, Ignacio; Sousa-Santos, Carla; Perea, SilviaTwo new species, Squalius gaditanus sp. nov. and Squalius tartessicus sp. nov. are described on the basis of morphological and genetic traits. Squalius gaditanus is restricted to the Barbate, Jara and Miel drainages in the province of Cádiz (Southern Spain). Squalius gaditanus sp. nov. can be distinguished from other Squalius species from the Iberian Peninsula through a combination of morphometric, meristic and...
Historical biogeography of the Iberian Peninsula: multilocus phylogeny and ance...
Perea, Silvia; Sousa‐Santos, Carla; Robalo, Joana; Doadrio, IgnacioThe Iberian Peninsula is one of the most ancient geological areas in Europe. Its complex orography is a consequence of several geological episodes related with two orogenic episodes that occurred from Late Devonian (Variscan orogeny) to the Cenozoic (Alpine orogeny). Unraveling the evolutionary history of strict freshwater fauna, such as leuciscid fishes, may contribute to our understanding of the paleogeograph...
Multilocus phylogeny and systematics of Iberian endemic Squalius (Actinopterygi...
Perea, Silvia; Santos, Carla Sousa; Robalo, Joana; Doadrio, IgnacioInferring the evolutionary history of a group of species can be challenging given the many factors involved. In recent years, the increased availability of sequences of multiple genes per species has spurred the development of new methodologies to analyse multilocus data sets. Two approaches that analyse such data are concatenated supermatrix and coalescent-based species-tree analyses. In this study, we used bo...
Mito-nuclear sequencing is paramount to correctly identify sympatric hybridizin...
Santos, Carla Sousa; Pereira, Ana Martins; Branco, Paulo; Costa, Gonçalo J.; Santos, José M.; Ferreira, Maria Teresa; Lima, Cristina M.Background. 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...
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...
Fine-scale determinants of conservation value of river reaches in a hotspot of ...
Maceda-Veiga, Alberto; Baselga, Andrés; Sousa, Ronaldo Gomes; Vilà, Montserrat; Doadrio, Ignacio; Sostoa, Adolfo deGlobal freshwater biodiversity is declining at unprecedented rates while non-native species are expanding. Examining diversity patterns across variable river conditions can help develop better management strategies. However, many indicators can be used to determine the conservartion value of aquatic communities, and little is known of how well they correlate to each other in making diagnostics, including when t...
Broad-scale sampling of primary freshwater fish populations reveals the role of...
Santos, Carla Sousa; Robalo, Joana Isabel; Pereira, Ana Martins; Branco, Paulo; Santos, José Maria; Ferreira, Maria Teresa; Sousa, MónicaBackground. Worldwide predictions suggest that up to 75% of the freshwater fish species occurring in rivers with reduced discharge could be extinct by 2070 due to the combined effect of climate change and water abstraction. The Mediterranean region is considered to be a hotspot of freshwater fish diversity but also one of the regions where the effects of climate change will be more severe. Iberian cyprinids are...
Metapopulations in temporary streams - The role of drought-flood cycles in prom...
Santos, Carla Sousa; Robalo, Joana Isabel; Francisco, Sara Martins; Carrapato, Carlos; Cardoso, Ana Cristina; Doadrio, IgnacioGenetic factors have direct and indirect impacts in the viability of endangered species. Assessing their genetic diversity levels and population structure is thus fundamental for conservation and management. In this paper we use mitochondria] and nuclear markers to address phylogeographic and demographic data on the critically endangered Anaecypris hispanica, using a broad sampling set which covered its known d...
Spatial heterogeneity in the Mediterranean Biodiversity Hotspot affects barcodi...
Geiger, Matthias F.; Herder, Fabian; Monaghan, Michael T.; Almada, Vítor Carvalho; Barbieri, Roberta; Bariche, Michel; Berrebi, Patrick; Bohlen, JörgIncomplete knowledge of biodiversity remains a stumbling block for conservation planning and even occurs within globally important Biodiversity Hotspots (BH). Although technical advances have boosted the power of molecular biodiversity assessments, the link between DNA sequences and species and the analytics to discriminate entities remain crucial. Here, we present an analysis of the first DNA barcode library f...