Papers by Rolando Rodríguez-muñoz
Conservation Genetics, Jun 30, 2015
Your article is protected by copyright and all rights are held exclusively by Springer Science +B... more Your article is protected by copyright and all rights are held exclusively by Springer Science +Business Media Dordrecht. This e-offprint is for personal use only and shall not be selfarchived in electronic repositories. If you wish to self-archive your article, please use the accepted manuscript version for posting on your own website. You may further deposit the accepted manuscript version in any repository, provided it is only made publicly available 12 months after official publication or later and provided acknowledgement is given to the original source of publication and a link is inserted to the published article on Springer's website. The link must be accompanied by the following text: "The final publication is available at link.springer.com".
<p>Probabilities were estimated with all the identified individuals (N = 56). Microsatellit... more <p>Probabilities were estimated with all the identified individuals (N = 56). Microsatellites are ordered from least to most informative. Arrows indicate the first value of P<sub>ID</sub> and P<sub>ID-sib</sub> below 0.01.</p
PLOS ONE, 2014
<p>Box-plot shows the distribution of maximum distances (m) between genetic recaptures. Cen... more <p>Box-plot shows the distribution of maximum distances (m) between genetic recaptures. Center lines show the median; box limits indicate the 25th and 75th percentiles, and whiskers extend 1.5 times the interquartile range. Red and blue dots indicate females and males, respectively (n = 22); the arrow and value at the right end of the plot indicate a male outlier beyond the axis range.</p
European Journal of Wildlife Research, 2017
The Cantabrian capercaillie (Tetrao urogallus cantabricus) is an endangered subspecies of the Wes... more The Cantabrian capercaillie (Tetrao urogallus cantabricus) is an endangered subspecies of the Western capercaillie, endemic of northern Spain, inhabiting the southwestern limit of the species range. Assessing genetic variability and the factors that determine it is crucial in order to develop an effective conservation strategy. In this work, non-invasive samples were collected in some of the best preserved areas inhabited by Cantabrian capercaillie. Nine microsatellite loci and a sexspecific marker were analysed. We included five zones, separated by valleys with different levels of habitat modifications. No evidence of genetic clustering was found which suggests that fragmentation and development in the area do not act as barriers to gene flow. Nonetheless, significant differences among sampling zones were encountered in terms of their allelic frequencies (global F ST = 0.035, p = 0.001). Pairwise F ST comparisons showed differences between all sampling zones included, except between the two ones located in the South (Degaña and Alto Sil). These findings, along with the results of individual based genetic differences, indicate that gene flow among sampling zones might be at least slightly compromised, except between the two zones located in the South. Despite this, the sampling zones seem to exchange migrants at a rate that prevents genetic differentiation to the point of creating clusters. Our results show that the capercaillies in the study area constitute a single interbreeding group, which is an important piece of information that provides support to better understand the dynamics of this endangered subspecies.
Conservation Genetics, 2015
Your article is protected by copyright and all rights are held exclusively by Springer Science +B... more Your article is protected by copyright and all rights are held exclusively by Springer Science +Business Media Dordrecht. This e-offprint is for personal use only and shall not be selfarchived in electronic repositories. If you wish to self-archive your article, please use the accepted manuscript version for posting on your own website. You may further deposit the accepted manuscript version in any repository, provided it is only made publicly available 12 months after official publication or later and provided acknowledgement is given to the original source of publication and a link is inserted to the published article on Springer's website. The link must be accompanied by the following text: "The final publication is available at link.springer.com".
Journal of ornithology, Oct 1, 2006
The Cantabrian capercaillie Tetrao urogallus cantabricus, a subspecies of the western capercailli... more The Cantabrian capercaillie Tetrao urogallus cantabricus, a subspecies of the western capercaillie, is endemic to the Cantabrian Mountains of northwest Spain. The range is separated from its nearest neighbouring capercaillie population by a distance of more than 300 km. High genetic differentiation compared to capercaillie elsewhere qualifies the subspecies as an Evolutionarily Significant Unit. An assessment according to the IUCN Red List categories and criteria showed that the subspecies qualifies as Endangered due to rapid population declines, small population size, and severely fragmented range. The implementation of a range-wide recovery plan is vital for the survival of this subspecies.
Life-history theories of senescence are based on the existence of a trade-off in resource allocat... more Life-history theories of senescence are based on the existence of a trade-off in resource allocation between body maintenance and reproduction. This putative trade-off means that environmental and demographic factors affecting the costs of reproduction should be associated with changes in patterns of senescence. In many species, competition among males is a major component of male reproductive investment, and hence variation in the sex ratio is expected to affect rates of senescence. We test this prediction using nine years of demographic and behavioural data from a wild population of the annual field cricket <i>Gryllus campestris.</i> Over these generations, the sex ratio at adulthood varied substantially, from years with an equal number of each sex to years with twice as many females as males. Consistent with the predictions of theory, we found that in years with a greater proportion of females, both sexes experienced a slower increase in mortality rate with age. Addit...
Life-history theories of senescence are based on the existence of a trade-off in resource allocat... more Life-history theories of senescence are based on the existence of a trade-off in resource allocation between body maintenance and reproduction. This putative trade-off means that environmental and demographic factors affecting the costs of reproduction should be associated with changes in patterns of senescence. In many species, competition among males is a major component of male reproductive investment, and hence variation in the sex ratio is expected to affect rates of senescence. We test this prediction using nine years of demographic and behavioural data from a wild population of the annual field cricket <i>Gryllus campestris.</i> Over these generations, the sex ratio at adulthood varied substantially, from years with an equal number of each sex to years with twice as many females as males. Consistent with the predictions of theory, we found that in years with a greater proportion of females, both sexes experienced a slower increase in mortality rate with age. Addit...
Información del artículo El manejo del hábitat, una nueva amenaza para el urogallo cantábrico.
Journal of Evolutionary Biology
Understanding how species can thrive in a range of environments is a central challenge for evolut... more Understanding how species can thrive in a range of environments is a central challenge for evolutionary ecology. There is strong evidence for local adaptation along large‐scale ecological clines in insects. However, potential adaptation among neighbouring populations differing in their environment has been studied much less. We used RAD sequencing to quantify genetic divergence and clustering of ten populations of the field cricket Gryllus campestris in the Cantabrian Mountains of northern Spain, and an outgroup on the inland plain. Our populations were chosen to represent replicate high and low altitude habitats. We identified genetic clusters that include both high and low altitude populations indicating that the two habitat types do not hold ancestrally distinct lineages. Using common‐garden rearing experiments to remove environmental effects, we found evidence for differences between high and low altitude populations in physiological and life‐history traits. As predicted by the local adaptation hypothesis, crickets with parents from cooler (high altitude) populations recovered from periods of extreme cooling more rapidly than those with parents from warmer (low altitude) populations. Growth rates also differed between offspring from high and low altitude populations. However, contrary to our prediction that crickets from high altitudes would grow faster, the most striking difference was that at high temperatures, growth was fastest in individuals from low altitudes. Our findings reveal that populations a few tens of kilometres apart have independently evolved adaptations to their environment. This suggests that local adaptation in a range of traits may be commonplace even in mobile invertebrates at scales of a small fraction of species' distributions.
Proceedings of the Royal Society B: Biological Sciences
Life-history theories of senescence are based on the existence of a trade-off in resource allocat... more Life-history theories of senescence are based on the existence of a trade-off in resource allocation between body maintenance and reproduction. This putative trade-off means that environmental and demographic factors affecting the costs of reproduction should be associated with changes in patterns of senescence. In many species, competition among males is a major component of male reproductive investment, and hence variation in the sex ratio is expected to affect rates of senescence. We test this prediction using nine years of demographic and behavioural data from a wild population of the annual field cricket Gryllus campestris. Over these generations, the sex ratio at adulthood varied substantially, from years with an equal number of each sex to years with twice as many females as males. Consistent with the predictions of theory, we found that in years with a greater proportion of females, both sexes experienced a slower increase in mortality rate with age. Additionally, phenotypic...
Cybium, 2011
Résumé/Abstract En juillet 2009, des larves de Lampetra sp. ont été capturées dans la rivière Dev... more Résumé/Abstract En juillet 2009, des larves de Lampetra sp. ont été capturées dans la rivière Deva, au nord de l'Espagne. Cette première signalisation du genre Lampetra pour la côte Cantabrique élargit de façon significative la répartition de ce genre dans la Péninsule ...
References http://rsbl.royalsocietypublishing.org/content/5/2/286.full.html#ref-list-1 This artic... more References http://rsbl.royalsocietypublishing.org/content/5/2/286.full.html#ref-list-1 This article cites 24 articles, 3 of which can be accessed free Subject collections (539 articles) evolution (465 articles) ecology Articles on similar topics can be found in the following collections Email alerting service here right-hand corner of the article or click Receive free email alerts when new articles cite this article sign up in the box at the top
La reproduccion constituye una de las etapas mas criticas en el cilo de vida de cualquier especie... more La reproduccion constituye una de las etapas mas criticas en el cilo de vida de cualquier especie, esencialmente durante el desarrollo embrionario. En la presente tesis se abordan diversos aspectos relacionados con la biologia reproductora de la lamprea marina. En las hembras la inversion gonadal esta dirigida a la produccion de un gran numero de huevos de pequeno tamano. No se detecto relacion entre fecundidad de la hembra y su tamano, aunque si entre este y el tamano del huevo. La reproduccion parece ajustarse a la epoca del ano en que las condiciones ambientales son mas favorables para el desarrollo de embriones y larvas. El rango de tolerancia termica de los embriones es bastante reducido, observandose un efecto a largo plazo cuando la temperatura de incubacion se encuentra proxima a los limites de dicho rango. Entre los factores ambientales que condicionan el crecimiento de las larvas, la temperatura y la densidad de las larvas parecen tener un gran importancia. Aunque no se de...
Many organisms are capable of growing faster than they do. Restrained growth rate has functionall... more Many organisms are capable of growing faster than they do. Restrained growth rate has functionally been explained by negative effects on lifespan of accelerated growth. However, the underlying mechanisms remain elusive. Telomere attrition has been proposed as a causal agent and has been studied in endothermic vertebrates. We established that telomeres exist as chromosomal-ends in a model insect, the field cricket, using terminal restriction fragment andBal 31methods. Telomeres comprised TTAGGn repeats of 38kb on average, more than four times longer than the telomeres of human infants.Bal 31assays confirmed that telomeric repeats were located at the chromosome-ends. We tested whether rapid growth is achieved at the expense of telomere length by comparing crickets reared at 23°C with their siblings reared at 28°C, which grew three times faster. Surprisingly, neither temperature treatment nor age affected average telomere length. Concomitantly, the broad sense heritability of telomere ...
Uploads
Papers by Rolando Rodríguez-muñoz