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Publications (69)
Simple Summary
The introduction of alien species is one of the major causes of biodiversity loss. The American bullfrog (Lithobates catesbeianus) is considered to be one of the most harmful invasive species which overall threatens native amphibians. The detection of an invasive species in the first stage of its arrival is critical to control its co...
Brown trout populations living in the limit of the distribution of the species face challenging environmental conditions. In islands, this vulnerable situation is exacerbated by geographical isolation. Sicilian trout persist only in the south-eastern part of the island and, based on their morphological characteristics, they have been recognized as...
Background: The bullet tuna (Auxis rochei) is an epipelagic fish with a worldwide distribution that is highly targeted by fisheries. Genetic diversity and population genetics are good indicators of population structure and thus, essential tools for fisheries management. Knowing which factors (biotic and abiotic) might be shaping such structure is c...
The American bullfrog ( Lithobates catesbeianus ) is considered one of the most harmful invasive species. In the Iberian Peninsula, this species had been cited occasionally until the year 2018, when L. catesbeianus appeared in the Ebre Delta, and for the first time, it seemed to breed in a territory of the Peninsula. We used the methodology based o...
Anthropogenic habitat fragmentation and roadkill mortality are considered important threats to European hedgehogs. Habitat fragmentation isolates hedgehog populations and, as a consequence, reduces their genetic diversity and leads the populations to vulnerable situations. The hedgehog populations in the Iberian Peninsula represent the southern lim...
Euthynnus (family Scombridae) is a genus of marine pelagic fish species with a worldwide distribution that comprises three allopatric species: E. alletteratus, E. affinis and E. lineatus. All of them targeted by artisanal and commercial fisheries. We analyzed 263 individuals from Atlantic and Pacific Oceans using two genetic markers, the mtDNA Cont...
The western European hedgehog Erinaceus europaeus is the most representative species among spiny Iberian hedgehogs. The Algerian hedgehog Atelerix algirus and the four-toed hedgehog Atelerix albiventris are other spiny hedgehogs that can be found on the Iberian Peninsula. Whereas A. algirus has a limited distribution in a narrow stretch of east Ibe...
Mediterranean brown trout (Salmo trutta) populations have been extensively supplemented with genetically divergent hatchery stocks to enhance recreational fishing, and the displacements of native gene pools are well documented. Because of the great difficulty to breed local stocks of native Mediterranean brown trout in the farm, the introduction of...
In brown trout (Salmo trutta L.), spatial patterns of population structure have been extensively studied. However, less attention has been paid to the short-term temporal stability of genetic diversity and factors modeling its distribution. Brown trout populations from three tributaries of the Esva River were genetically monitored in 2010 and 2011...
The development of affordable massive parallel sequencing (MPS) has reduced both time and costs of SNP identification for use in conservation and population genetic studies. After MPS, a second validation is usually required. High resolution melting analysis (HRMA) is a fast and simple method for mutation scanning, and thus a suitable validation pr...
SNP identification and validation in two invasive species: zebra mussel (Dreissena polymorpha) and Asian clam (Corbicula fluminea). The development of affordable massive parallel sequencing (MPS) has reduced both time and costs of SNP identification for use in conservation and population genetic studies. After MPS, a second validation is usually re...
Parental assessment in captive breeding groups of Mauremys leprosa and Emys orbicularis.
The melanocortin 1 receptor (MC1R) gene was investigated as a candidate for plumage variations in Chinese painted quail, Coturnix chinensis. Four silent and two missense nucleotide polymorphisms were identified. The correspondent amino acid changes, p.Glu92Lys and p.Pro292Leu, were found in Blue Face and Red Breasted animals respectively. Blue Face...
The phylogeographic approach attempts to assess patterns of genetic structure with reference to geography and considering the historical processes responsible for species distribution. The ability to elucidate phylogeographic patterns and infer the evolutionary histories of species is essential to understanding population divergence and for the man...
The survival of populations in several glacial refuges allowed the accumulation of genetic differences, the apparition of ancestral divergent lineages and ultimately promoted speciation. As a consequence, high genetic richness is common in extant brown trout populations from southern Europe. In the Iberian Peninsula, as many as four ancient mitocho...
A comprehensive guide to the most current research, history, genetics and ecology of the brown trout including challenging environmental problems. The brown trout is an iconic species across its natural European distribution and has been introduced throughout the World. Brown Trout offers a comprehensive review of the scientific information and cur...
Intentional mislabelling of seafood is a widespread problem, particularly with high-value species like tuna. In this study we examine tuna mislabelling, deliberate species substitution, types of substitution and its impact on prices. The survey covered the commercial chain, from Merca-Barna to fishmongers and restaurants in the Spanish Autonomous C...
Primary data: codes of sampled areas.
(PDF)
Tuna species name (commercial designations) accepted in Spain and in littoral Autonomous Communities.
(DOCX)
The Asian clam (Corbicula sp.) is an invasive freshwater bivalve native to Asia, the Middle East, Australia, and Africa. It is now widely distributed around the world producing large ecological and economic impacts. Three well-described invasive lineages form a cryptic species complex with asexual reproduction based on androgenesis. In this study,...
Since the end of the 20th century, some headwaters of rivers in the eastern Pyrenees have been designated as genetic refuges to protect remaining native brown trout (Salmo trutta) diversity. The declaration was based on limited or no evidence of genetic impact from released non-native Atlantic hatchery fish. Hatchery releases were completely banned...
The zebra mussel (Dreissena polymorpha Pallas, 1771) and the quagga mussel (D. rostriformis Deshayes, 1838) are successful invasive bivalves with substantial ecological and economic impacts in freshwater systems once they become established. Since their eradication is extremely difficult, their detection at an early stage is crucial to prevent spre...
The zebra mussel, Dreissena polymorpha (Pallas, 1771), is a successful invasive bivalve native to the brackish and freshwaters systems of the Ponto-Caspian regions. It is considered one of the world’s 100 worst invasive alien species and has high ecological and economic impacts. Over the past 200 years, it has expanded across the European and North...
The temporal components of genetic diversity and geographical structure of invasive mosquitofish populations are poorly known. Through the genetic monitoring of four consecutive cohorts of Gambusia holbrooki from three different river basins we aimed to determine temporal patterns of regional genetic variation and dispersal rates within invasive po...
Since the end of the 20th century, some headwaters of rivers in the eastern Pyrenees have been designated as genetic refuges to protect remaining native brown trout (Salmo trutta) diversity. The declaration was based on limited or no evidence of genetic impact from released non-native Atlantic hatchery fish. Hatchery releases were completely banned...
This study presents the first results on Atlantic bluefin tuna (Thunnus thynnus) individual spawning duration and its short-term temporal behavior. The study was based on direct measurements resulting from mtDNA analysis of the offspring of spawners held in transport cages during the 2013 spawning monitoring survey in Balearic waters. The number of...
Asiatic clam (Corbicula fluminea) is one of the most invasive freshwater bivalves. Despite the ecologic and economic impacts of this species, there are only a few polymorphic microsatellites. In this study, we screened the genome from C. fluminea in search of microsatellite markers using massive parallel sequencing. We identified 246 new microsatel...
Analyses of the mt DNA of 183 three‐spined sticklebacks ( Gasterosteus aculeatus ), from freshwater Iberian populations, were performed to reconstruct the phylogeography of this species and to inform conservation recommendations on the basis of genetic diversity and the geographical distribution of variation.
A high degree of population structure,...
The zebra mussel (Dreissena polymorpha, Pallas, 1771) is one of the most invasive species of freshwater bivalves, due to a combination of biological and anthropogenic factors. Once this species has been introduced to a new area, individuals form dense aggregations that are very difficult to remove, leading to many adverse socioeconomic and ecologic...
The risks of supplementation must be examined to assess the genetic effects to native wild populations before full implementation or exclusion of programs that involve captive breeding and release. Real genetic data can be applied to simulations of genetic changes in populations of interest and subsequently used in risk assessment. Ancestral Medite...
Genetic analyses contribute to studies of biological invasions by mapping the origin and dispersal patterns of invasive species occupying new territories. Using microsatellite loci, we assessed the genetic diversity and spatial population structure of mosquitofish (Gambusia holbrooki) that had invaded Spanish watersheds, along with the American loc...
Biological invasions are considered one of the main anthropogenic factors that reduce the abundance of native species. Understanding the patterns of population structure and behavior of introduced species is important to determine invasion sources and pathways, in addition to improving the protective management of native species. Thus, we set out t...
The European anchovy (Engraulis encrasicolus) exhibits a complex population structure in the Mediterranean Sea and Northeast Atlantic Ocean. To resolve the population genetic structure of this species, we surveyed sequence variability in the mitochondrial (mtDNA) control region in samples (n = 563) from 13 locations in the Northeast Atlantic, the B...
Abstract – We used a targeted gene approach to amplify genomic fragments to characterise single‐nucleotide polymorphisms (SNPs) in introduced European populations of the invasive mosquitofish Gambusia holbrooki. Patterns of diversity within and among European populations of G. holbrooki and American collections of G. holbrooki and Gambusia affinis...
1. The three-spined stickleback (Gasterosteus aculeatus) on the Iberian Peninsula is only distributed in freshwater habitats and has completely disappeared from most of its range, mainly as a consequence of habitat degradation and invasive fish introductions. Genetic investigations have shown that Mediterranean-Adriatic sticklebacks constitute an e...
The spatial distribution of closely related individuals can be inferred from genetic data and provides valuable information
about dispersal patterns and gene flow contributing to the population genetic structure of organisms. Here, we analyzed family
distribution of brown trout Salmo trutta in the uppermost reaches of the Mediterranean Son River ba...
The Pleistocene glaciations produced a range of changes that affected the genetic population structure of fish species. Usually, studies focused on the population structure of species in postglacial recolonized areas and less attention was devoted to species differentiation within refuge areas. Allelic frequencies for 21 polymorphic protein-coding...
We have characterized a deletion in the MC1R gene causing the loss of one amino acid (p.Phe256del), which is perfectly associated with melanism in guinea fowl (Numida meleagris). Co-segregation of the p.Phe256del with melanism was confirmed in 25 offspring born from a cross of two heterozygote birds; therefore we suggest that this mutation is respo...
The Iberian Peninsula contains diverse populations of freshwater fish, with major river basins comprising differentiated biogeographic units. The Duero River flows through the North-Western Iberian Peninsula and is one of the most important rivers within the Iberian glacial refuge. Brown trout (Salmo trutta) populate this whole basin, and studies u...
The physical arrangement of closely related individuals is expected to significantly influence the pattern of population genetic structure. For example, if related individuals are non-randomly distributed and included in samples, this may lead to exaggerated conclusions about genetic differentiation. In the present study, we compared population str...
Detection of hybridization and introgression in wild populations that have been supplemented by hatchery fish is necessary during development of conservation and management strategies. Initially, allozyme data and more recently highly polymorphic microsatellite markers have been used to obtain this information. We used both markers to assess the ef...
Captive-bred animals derived from native, alien, or hybrid stocks are often released in large numbers in natural settings with the intention of augmenting harvests. In brown trout (Salmo trutta), stocking with hatchery-reared non-native fish has been the main management strategy used to maintain or improve depleted wild brown trout populations in I...
Sanz, N., García-Marín, J-L., Viñas, J., Roldán, M., and Pla, C. 2008. Spawning groups of European anchovy: population structure
and management implications. – ICES Journal of Marine Science, 65: 1635–1644.
Samples of Engraulis encrasicolus from the western Mediterranean and the eastern Atlantic spawning groups were examined by protein electrophor...
Abstract – Management policies balancing harvest and conservation of natural populations of fish are difficult to establish, both scientifically and politically. This issue is particularly difficult when those populations represent native genetic resources. Since 1997, several brown trout populations in the eastern Pyrenees Mountains (Spain) were d...
Abstract– We analyzed the introduction of hatchery-reared trout in the Riutort Creek, a small stream in the eastern Spanish Pyrennees. We used gene correlation matrices between individuals to analyze the fish coancestry in the Riutort Creek samples and in the hatchery stock. Hatchery fish disturbed the single ancestry in the native population of th...
Populations living on the periphery of a species range are subjected to intense habitat pressures that stress their vulnerability to threats. South Iberian brown trout (Salmo trutta) populations are located on the southwestern boundary of the species range in Europe. This region has been described as a contact zone between Atlantic and Mediterranea...
Defining population boundaries within species is a fundamental key to study the species’ biology and evolution. The identification of intraespecific groups is also necessary for shortterm management strategies of exploited species and long-term conservation goals. For marine fish species, the existence of separated spawning groups is the first evidence...
Genetic changes in the population structure of brown trout Salmo trutta in the eastern Pyrenees were monitored during the 1990s. Stocking with cultivated exogenous fish has resulted in introgressed populations where those with higher introgression coefficients also have the highest values of heterozygosity. Nevertheless, this increase of local dive...
L'anàlisi genètica de cinquanta loci proteics ha permès estudiar l'estructura poblacional de la truita comuna a l'alta Noguera Ribagorçana, incloent-hi part del Parc Nacional d'Aigüestortes i Estany de Sant Maurici. Els resultats obtinguts indiquen una important diferenciació genètica entre les mostres, que és conseqüència dels diferents graus d'in...
Brown trout were collected from 36 locations inthe Iberian Peninsula representing thesouthwestern extreme of this species'distribution in Mediterranean drainages.Allelic distributions among these peripheralpopulations for 26 polymorphic allozyme loci(corrected to remove effects of introgressionfrom exogenous hatchery introductions)indicated a mosai...
The Pleistocene glaciations produced a range of changes that affected the genetic population structure of fish species. Usually, studies focused on the population structure of species in postglacial recolonized areas and less attention was devoted to species differentiation within refuge areas. Allelic frequencies for 21 polymorphic protein-coding...
1. The brown trout (Salmo trutta) represents one of the main freshwater resources in Spain, but habitat alterations and overharvesting have contributed to the decline or disappearance of numerous natural populations. In addition, reinforcement programs of wild populations based on releases of hatchery reared fish of exogenous origin compromise the...
Evidence of different degrees of genetic interactions of exogenous hatchery fish with native populations was electrophoretically obtained from collections of brown trout from four heavily fished areas and eight adjacent protected and unfished areas in northeastern Spain. Although some degree of hybridization or introgression was detected in each co...
