Neus Oromí

Neus Oromí
Universitat de Lleida | UDL

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66
Publications
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523
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January 2007 - October 2014
Universitat de Lleida
Position
  • PhD

Publications

Publications (66)
Article
Full-text available
Demographic traits were analyzed in the Pyrenean brook newt (Calotriton asper) to evaluate whether its variability responds to the adaptation to the different habitats. In this study, life history traits of Calotriton asper were studied in nine populations living in two different kinds of habitats in the Pyrenees mountains: lakes and streams. Skele...
Article
Full-text available
Objectives The Brown trout is a salmonid species with a high commercial value in Europe. Life history and spawning behaviour include resident ( Salmo trutta m. fario ) and migratory ( Salmo trutta m. trutta ) ecotypes. The main objective is to apply RNA-seq technology in order to obtain a reference transcriptome of two key tissues, brain and muscle...
Article
Full-text available
Evolutionary theory predicts the evolution of metamorphosis over paedomorphosis (the retention of larval traits at the adult stage) in response to life in unfavourable habitats and to the benefits of dispersal. Although many organisms are canalised into obligatory complex or simple life cycles, some species of newts and salamanders can express both...
Article
Full-text available
Differences in environmental conditions such as those between lakes and streams can produce phenotypic variation and ultimately promote evolutionary diversification. Some species of newts and salamanders can occupy these habitats and express alternative phenotypes: metamorphs that lose gills at metamorphosis and paedomorphs that retain them at the...
Article
Full-text available
Facultative paedomorphosis is a common polyphenism in newts where two alternative phenotypes can coexist: metamorphs and paedomorphs (mature with larval traits, i.e. retaining gills). This phenomenon has been reported in some lacustrine populations of the Pyrenean newt (Calotriton asper). The morphology and life-history traits were studied in a lac...
Article
Full-text available
The Pyrenees represent a natural laboratory for biogeographic, evolutionary and ecological research of mountain fauna as a result of the high variety of habitats and the profound effect of the glacial and interglacial periods. There is a paucity of studies providing a detailed insight into genetic processes and better knowledge on the patterns of g...
Data
List and codification of environmental variables from the BIOCLIM dataset. List and codification of environmental variables from the BIOCLIM dataset. Units expressed and mean, median, minimum and maximum values for the 44 Calotriton asper populations. Temperature data is in units °C *10 with a 0.1°C precision. (XLSX)
Data
Pairwise FST values among Calotriton asper populations. Pairwise FST values among Calotriton asper populations. See Table 1 for the population codification; p values were <0.05 for all pairs except for those in bold. (XLSX)
Data
Estimates of effective population size (Ne) for each Calotriton asper population. Estimates of effective population size (Ne) for each Calotriton asper population, calculated with two analytical approaches (ONeSAMP, and COLONY) and using different priors; estimates of the upper and lower 95% CI estimates for each method are indicated. (XLSX)
Data
Plot of deltaK values calculated by Evanno’s method from the Structure analyses. Plot of deltaK values calculated by Evanno’s method from the Structure analyses. A) Global dataset of the 44 Calotriton asper populations. B) Western Pyrenean populations, i.e. Cluster 1. C) Central-eastern Pyrenean populations, i.e. Cluster 2. (TIF)
Data
IBD of the five genetic clusters. Results of the isolation by distance analyses (IBD; Mantel test) of the five genetic Calotriton asper clusters. (XLSX)
Data
Microsatellite data of the Calotriton asper dataset used. (XLSX)
Data
Neighbor-joining tree among the Calotriton asper populations. Neighbor-joining tree using DA distances among the Calotriton asper populations showing the relationships between the five genetic clusters defined by STRUCTURE analysis. As for the population codifications see Table 1. (TIF)
Data
Pearson correlation matrix of environmental and geographical variables. Pearson correlation matrix of environmental and geographical variables. In bold, significant levels of p<0.05. See text, for the codes of the variables. (XLSX)
Data
Univariate linear regression between genetic diversity and geographical and environmental selected variables. Univariate linear regression between genetic diversity and geographical and environmental selected variables of Calotriton asper populations. In bold significant levels of p<0.05. (XLSX)
Data
Linear regressions between the genetic diversity across the longitude and altitude using only stream populations. Linear regressions between the three genetic diversity indices (Ar, HO and HE) across the longitude (A) and altitude (B) ranges when only stream Calotriton asper populations were analyzed. (TIF)
Data
ANOVA among the three distinct habitat types to genetic diversity. ANOVA with Tukey HSD posthoc test among the three distinct habitat types to allelic richness (Ar) observed (HO) and expected heterozygosity (HE). (XLSX)
Data
Spatial interpolation of the genetic diversity measures acroos the Calotriton asper distribution range. Spatial interpolation of the genetic diversity of Calotriton asper. A) First axis of a principal components analysis (PC1) summarizing the allelic richness, the rarified private allele richness and the observed and expected heterozygosities (posi...
Article
Full-text available
The mechanisms that can contribute in the fish movement strategies and the associated behaviour can be complex and related to the physiology, genetic and ecology of each species. In the case of the brown trout (Salmo trutta), in recent research works, individual differences in mobility have been observed in a population living in a high mountain ri...
Data
Metabolites correlating with fork length. (DOCX)
Data
Metabolite dataset. Set of metabolites raw abundances, integrated and distributed within individuals, with its individualized phenotypic characteristics. (ZIP)
Data
Metabolites correlating with sex. (DOCX)
Data
Molecules correlating with home range. (DOCX)
Article
Full-text available
In this note, a new localization for the Pelphylax Kl. grafi species is referenced. The individuals was captured for first time in 2009 and recently recaptured in 2017 (after 7 years and 215 days). The individual was identified by its unique pattern of coloration. The estimated age (according to skeletochronology) was 11, that is the highest longev...
Article
Full-text available
Skeletochronology was used to estimate age and several life history traits of the Iberian spadefoot toad (Pelobates cultripes) from a semiarid zone of the Ebro Valley (in the northeastern Iberian Peninsula). The lines of arrested growth (LAGs) were clearly visible in all cross sections of the adult phalanges, showing fast growth in the first year o...
Article
Full-text available
Paedomorphosis and metamorphosis are two major developmental processes that characterize the evolution of complex life cycles in many lineages. Whereas these processes were fixed in some taxa, they remained facultative in others, with alternative phenotypes expressed in the same populations. From a genetic perspective, it is still unknown whether s...
Poster
Full-text available
* Diploma to the best student poster communication * * For more information about the methodology, see: https://www.youtube.com/watch?v=RmQa5P-PNjY * The pattern of movements of a stream-resident population of brown trout (Salmo trutta L.) was investigated in the river Flamisell (Ebro basin, North East Spain) over an 11-month period (April 2013 - F...
Poster
Full-text available
A de novo transcriptome sequencing strategy (RNA-seq) was performed to identify Single Nucleotide Polymorphisms (SNPs) as suitable genetic markers of Salmo trutta expressed genes in muscle and telencephalon. The two tissues were obtained from 25 individuals of a wild population in the Flamisell River (Catalan Pyrenees). Samples were immediately fro...
Poster
Full-text available
Understanding animal behavior adaptation and its underlying molecular basis is an important role in evolutionary biology. “Upstream” stimulus behavior is defined as an exploratory impulse exhibited by a proportion of individuals that swim long distance upstream. This stimulus behavior has been considered a proxy for the most complex migratory behav...
Article
Full-text available
Ce travail vise à établir la relation entre les marques de croissance histologiques (lignes d’arrêt de croissance [LAC]) et les traits vitaux de Discoglossus pictus (Répartition par âge selon le sexe, la longévité, durée de vie moyenne, relation taille-âge, relation taille-sexe). Nous avons effectué un comptage des lignes d’arrêt de croissance (LAC...
Article
Full-text available
Variations on embryonic and larval life history traits of ectotherm organisms are strongly affected by temperature conditions. However, these effects can vary between species and populations depending on the mechanisms that act in a determinate local habitat. In the present study, we analysed the effects of temperature on several embryonic and larv...
Article
Patterns of sexual dimorphism and age structure were investigated in two populations of the newt Calotriton arnoldi, endemic of the Montseny Massif (NE of the Iberian Peninsula). In contrast to the Pyrenean newt (Calotriton asper) sexual dimorphism in the Montseny brook newt is characterized by slightly larger females (60.3 ± 0.3 mm; maximum: 68 mm...
Article
Full-text available
Being ectothermic animals, freshwater turtles depend on environmental temperatures for thermoregulation (HUEY 1982). Thus, temperature plays a key role in determining turtle behavior, from microhabitat selection for feeding or breeding (BROW & BROOKS 1991; NIEUWOLT 1996) to the formation of population structures and geographical distribution patter...
Article
The Pyrenean brook newt (Calotriton asper) is a salamandrid that mostly lives in fast running and cold mountain-streams, although some populations are also found in lakes. In the present work, we report in detail on the occurrence of facultative paedomorphosis traits in a population from a Pyrenean high altitude lake. We compare its morphology, lif...
Article
A report of a phosphorus-31 nuclear magnetic resonance (31P-NMR) method to determine four alkylpolyphosphonates, aminotris(methylene phosphonic acid) (ATMP), 1-hydroxyethylidene diphosphonic acid (HEDP), ethylene diamine tetra (methylene phosphonic) acid (EDTMP), and diethylenetriamine penta(methylene phosphonic) acid (DTPMP), as well as impurities...
Article
Full-text available
Across altitudinal and latitudinal gradients, the proportion of suitable habitats varies, influencing the individual dispersal that ultimately can produce differentiation among populations. The natterjack toad (Bufo calamita) is distributed across a wide geographic range that qualifies the species as interesting for a geographic analysis of its gen...
Data
The delimitation of the spatial equivalent of isolated populations or interacting sets of local populations is crucial for conservation management. In Amphibia, spatial organization in metapopulations requires knowledge on the individual variation of annual migratory capacity within local populations to delimit core habitats around the breeding sit...
Article
Full-text available
The Natterjack toad remains one of the best-studied amphibians within Europe and much of the research conducted has had a direct conservation focus. Long-term collaboration between researchers and conservation practitioners in different countries has been a hallmark of the programme, and the exchange of data and experiences has been of mutual benef...
Article
Full-text available
Demographic life-history traits of Pelophylax saharicus from the Tiaret region (Algeria) were analysed using skeletochronological methods. Lines of arrested growth (LAGs) were characterized by a weak expression of bone growth marks, similar to other North African populations of the same species and probably due to a short inactivity period in pre-S...
Article
Full-text available
Anthropogenic sources of nitrogen that pollute bodies of water can have toxic and sub-lethal effects on amphibians. It has been hypothesized that such exposure may promote local adaptation, that is, selection for higher tolerance in individuals in populations exposed to pollutants. We tested this hypothesis with respect to the Natterjack toad (Bufo...
Article
The mean age of a population of agile frogs (Rana dalmatina) from the Iberian Peninsula was estimated using mark and recapture and skeletochronology. Life-history parameters, including growth rate, body length, age and size at maturity, sexual dimorphism and longevity, were studied. The regression between age and snout-vent length (SVL) was highly...
Article
Full-text available
We used capture-recapture techniques and skeletochronological analysis to investigate body size, population size, and age structure of a population of Palmate Newts (Lissotriton helveticus) living in two adjacent lakes at 2,300 m in Andorra (Eastern Pyrenees). Females were larger (minimum–maximum, 31.0–47.0 mm vs. 32.0–42.0 mm) and heavier (0.8–2.1...
Article
Full-text available
In the toad Bufo calamita, among-population variation of size follows roughly a converse Bergmann cline, but populations exist that do not fit this pattern. We propose that latitudinal body size variation is a byproduct of adaptive covariation among the life-history traits juvenile growth rate, longevity and lifetime fecundity. We choose five popul...
Article
Full-text available
(1).To monitor the seasonal variation of body temperature (tb) in free-ranging adult Bufo calamita, 15 toads were radio-tracked at Mas de Melons (Catalonia, Spain) using temperature-sensitive transmitters implanted to the abdominal cavity.(2).tb varied between +0.3 °C during winter and 32.2 °C during summer demonstrating behavioural avoidance of am...
Article
Full-text available
Se dispone de pocos datos herpetológicos de Argelia. Durante la primavera del 2008 se realizaron prospecciones a la provincia de Tiaret en la búsqueda de anuros. En un total de 10 sitios de reproducción se encontraron las siguientes especies: Pelophylax saharicus, Discoglossus pictus, Bufo mauritanicus, Bufo boulengeri e Hyla meridionalis. Se encon...
Article
Full-text available
In order to investigate the effects of nitrate and ammonium on the amphibians in a pasture zone of the Catalonian Pyrenees, larvae of Rana temporaria from several ponds were exposed to different concentrations of nitrate (0-500 mg/L) and ammonium (0-1.2 mg/L). High concentrations of nitrate in the water caused mortality and reduced larval size of R...
Article
Full-text available
Temperature affects the duration of embryonic and larval periods in amphibians. Plasticity in time to metamorphosis is especially important in amphibian populations of Mediterranean semi–arid zones where temperatures are high and precipitation is low, increasing the rate of pond desiccation. In order to test the influence of water temperature on th...
Article
Full-text available
Several experiments have shown that ambient ultraviolet-B radiation (UV-B) has negative effects on the development of amphibians' embryos. We studied the effects of UV-B radiation on development, survival and frequency of deformity during egg development in the Natterjack toad (Bufo calamita) from a semiarid region of Lleida (Catalonia, Spain). Egg...
Article
Full-text available
Skeletochronological assessment of the growth marks in the phalange bones of two natterjack populations (Bufo calamita) inhabiting northern Spain (Balaguer, Mas de Melons, Catalonia, 41°N) revealed that most individuals produced more than one line of arrested growth (LAG) per year, in contrast to conspecifics in other populations throughout the geo...
Article
Full-text available
Les particularitats de les poblacions amfíbiques que viuen en zones semiàrides sotmeses a un alt estrès ambiental es posen de manifest mitjançant estudis d'esqueletocronologia. L'estudi pretén avaluar la correlació histològica entre les marques de creixement (lines of arrested growth [LAG]) que es visualitzen en les falanges dels dits i l'edat d'in...
Article
Demographic life history traits were investigated in three Bufo calamita populations in Germany (Rhineland-Palatinate: Urmitz, 50°N; 1998-2000) and Spain (Catalonia: Balaguer, Mas de Melons, 41°N; 2004). We used skeletochronology to estimate the age as number of lines of arrested growth in breeding adults collected during the spring breeding period...

Projects

Projects (3)
Project
In this project, we aim at determining and explaining patterns of distribution and expression of the paedomorphic and metamorphic phenotypes. To this end, we combine a field approach in the main “hostpots” of paedomorphosis and we carry out laboratory experiments. Most aspects of the polyphenism are investigated: environmental determinants of metamorphosis, resource partitioning between syntopic alternative phenotypes (i.e. trophic polymorphism), sexual selection and compatibility between morphs, variation of developmental pathways across populations, morphological specificities of the two phenotypes, gene expression during metamorphosis, and gene flow across morphs and populations. We focus particularly on the two main drivers of the evolution of these processes: the presence of fish and drought. Therefore, our study also aims to highlight the high loss of intraspecific diversity and to document the patterns and causes of the extirpation and resilience of the paedomorphic phenotype.