Enrique Rodríguez-Serrano

University of Concepción · Departamento de Zoología

The origins of endothermy in birds and mammals are important events in vertebrate evolution. Endotherms can maintain their body temperature (Tb) over a wide range of ambient temperatures primarily using the heat that is generated continuously by their high basal metabolic rate (BMR)¹. There is also an important positive feedback loop as Tb influenc...

The ongoing climate change could intensify endangerment of species with a restricted distribution and small population size, such as rare or endemic species. Magellanic tuco-tuco (Ctenomys magellanicus) is the southernmost Patagonian-Fueguian fossorial caviomorph rodent with a small distribution. This species has been categorized as vulnerable due...

The Andean mountains stand out for their striking species richness and endemicity that characterize many emblematic Neotropical clades distributed in or around these mountains. The radiation of the Sigmodontinae subfamily, the most diversified mammalian group in the Neotropics, has been historically related to Andean orogenesis. We aim to evaluate...

Unraveling the biotic and abiotic drivers likely influencing clades' diversification dynamics (differential speciation and extinction rates) is crucial for understanding life on Earth. Here, we present a comprehensive analysis of the diversification dynamics of notoungulates (Mammalia: Notoungulata), the most diverse and widespread Cenozoic herbivo...

Sparassodonta, a Metatherian monophyletic group, was the main mammalian carnivore predator clade in South America from the Paleogene to the Early Pliocene (c. 66–3.5 Ma). However, there is still no consensus on the causes of their demise. Here, we use the fossil record and Bayesian diversification models to infer the origination and extinction rate...

Knowing what the highest-level mammalian carnivores and intermediate levels eat throughout the geography and how human activities may affect their community dynamics is relevant information to focusing and deciding on conservation efforts within a territory. In this review, we characterize geographically the accumulated knowledge about the trophic...

Worldwide, the genus Colletotrichum has been poorly documented in forest trees compared to crops. In Chile, most of the records from native plants date from the beginning of the last century, and only a few species are properly identified according to modern taxonomy. To contribute to the knowledge of Colletotrichum species diversity in Chilean nat...

Nuestro país es considerado una isla biogeográfica debido a sus variadas e infranqueables fronteras naturales: desierto, cordillera y mar. Esta condición proporciona las claves para su alto grado de endemismo. Entre el 22 y el 25 por ciento de las especies descritas para Chile son endémicas, es decir, sólo viven dentro del territorio nacional. Esta...

La competencia tiende a ocurrir en especies simpátricas morfológica y ecológicamente similares. Sin embargo, si los recursos son suficientes las especies realizaran una partición de estos en 3 ejes fundamentales: comida, espacio y tiempo. En Chile central habitan 8 especies de carnívoros terrestres y concentra la mayor antropización de hábitat del...

Las colecciones biológicas son los repositorios más importantes de la biodiversidad reciente y pasada, siendo estos una fuente primaria del conocimiento para indagar en una amplia gama de áreas en la biología y ecología. Históricamente, las colecciones estaban conformadas únicamente por el ejemplar físico, no obstante, en los últimos años las colec...

Oscilando entre la Subregión subantártica y la estepa patagónica, este escenario ambiental de contrastes y climas extremos tiene efecto sobre la fauna, lo que se traduce en la existencia de muy pocos vertebrados endémicos en esta macrozona

Background For the genus Thylamys , the rivers have been reported as barriers to dispersal, limiting current and historical distribution of its lineages. We hypothesized that the Maipo river has affected the genetic structure of northern and southern lineages of Thylamys elegans , recovering a phylogenetic relationships with reciprocally monophylet...

Background: Analysis of morphological variation in archipelagos has been essential to understand the evolution of terrestrial vertebrates. In particular, these natural scenarios allow to assess morphological changes experienced by insular fauna compared to their mainland counterparts. In mammals, morphological changes of insular forms have been obs...

In this study, we establish the seasonal variation of the Culpeo fox's diet in a seasonal ecosystem of south-central Chile. By scat analyses, 21 prey taxa were identified, 16 were animal and five were plant species. Mammals (88.47%) were the main biomass contribution with small seasonal fluctuations. Plants contributed the most to the differences o...

The temperate rainforests of southern Chile, a recognized biodiversity hotspot, were significantly affected by Pleistocene glacial cycles in their southern portion and have been severely disrupted mainly due to recent human activities. Additionally, the landscape is characterized by a series of potential barriers to gene flow, such as the Chacao Ch...

La manipulación con fines científicos de vertebrados terrestres en poblaciones naturales chilenas se debe realizar previa autorización del SAG y de Comités de Bioética institucionales. Obtener dichas autorizaciones es cada vez más complejo; los trámites no se adecúan al quehacer científi co ni al conocimiento sobre el efecto de la manipulación en l...

RESUMEN La manipulación con fi nes científi cos de vertebrados terrestres en poblaciones naturales chilenas se debe realizar previa autorización del SAG y de Comités de Bioética institucionales. Obtener dichas autorizaciones es cada vez más complejo; los trámites no se adecúan al quehacer científi co ni al conocimiento sobre el efecto de la manipul...

Austrocodrusgladiogeminussp. n. is described from southernmost South America. It is a member of the primitive subfamily Austroserphinae (Hymenoptera, Proctotrupidae), which is distributed in Oceania and South America, and is characterized from other Austrocodrus species by its relatively larger body size, the presence of long and sword-shaped ovipo...

Among the earliest macroecological patterns documented, is the range and body size relationship, characterized by a minimum geographic range size imposed by the species' body size. This boundary for the geographic range size increases linearly with body size and has been proposed to have implications in lineages evolution and conservation. Neverthe...

A new species of Oligoryzomys, a Sigmodontinae rodent of the tribe Oryzomyini, is described from the Patagonian islands of southern Chile. Phylogenetic analyses that included the new form and known species of Oligoryzomys were examined using nucleotide sequence data from the mitochondrial cytochrome b gene. Maximum-likelihood and Bayesian analyses...

Background Fragmentation of native forests is a highly visible result of human land-use throughout the world. In this study, we evaluated the effects of landscape fragmentation and matrix features on the genetic diversity and structure of Oligoryzomys longicaudatus, the natural reservoir of Hantavirus in southern South America. We focused our work...

Georreferences for each patch Georreferences (decimal system) for each patch surveyed.

Code to perform the analyzes used in this study Annotated R code. This should be used in combination with the raw data delivered in supplementary materials: “comb_999.grd.zip”, “gammast.txt”, and “lonlat.txt”.

Raster File for landscape features Raster file with landscape soil uses for 2007 at the study site with 0.048 × 0.0034 pixels of resolution.

Gamma_st distances_ Genetic distances between patches.

Criteria for delimitation of patch areas Criteria for delimitation of patch areas. Criteria were designed visualizing the patches in Google Earth Pro v 7.1 (http://www.google.com/earth/) and based on Soil Use Cover data of the Chilean National Environmental Information System (http://ide.mma.gob.cl/).

Data for each individual used in this work Sampling site, patch name, coordinates of specimens, GenBank accession number and voucher number of each specimen used in this study.

Background Why biodiversity is not uniformly distributed on the Earth is a major research question of biogeography. One of the most striking patterns of disparity in species distribution are the biodiversity hotspots, which generally do not fit with the distribution of relevant components of the Neotropical biota. In this study, we assess the proxi...

Resolution maps comparisons (A) Kappa values for the different resolutions of analysis of specific richness; (B) Biodiversity Hotspot delimitations to all spatial scales; (C) Biodiversity Hotspot defines using the Gi* statistics.

R Scripts (A) Biogeographic stochastic mapping (BSM) in BioGeoBEARS package; (B) Ancestral area reconstruction in BioBeoBEARS package; (C) Quantile Regressions in Quantreg package.

Caviomorpha (Rodentia, Hystricognathi) es uno de los clados más diversos de mamíferos sudamericanos. Se encuentran en todos los hábitats disponibles en el neotrópico con diversos hábitos locomotores y junto a su larga historia evolutiva, son un interesante modelo para estudiar patrones macroevolutivos. En el presente estudio se evaluó si la gran di...

Only two species of Didelphidae are currently recognized in Chile, the sister species Thylamys elegans, endemic of Med-iterranean ecorregion and Thylamys pallidior, the inhabitant of the Puna and desert canyons. Three subspecies have been described for T. elegans: T. e. elegans, T. e. coquimbensis and T. e. soricinus. However, a recent study based...

Bats are the second most diverse order of mammals. South America is rich in bats, however Chile has low species diversity (12 especies) and absence of endemism. Scientific publications that have addressed the biological diversity and taxonomy of these Chilean mammals are also scarce. This review assessed the state of knowledge of bats in Chile and...

Larval modes of development affect evolutionary processes and influence the distribution of marine invertebrates in the ocean. The decrease in pelagic development toward higher latitudes is one of the patterns of distribution most frequently discussed in marine organisms (Thorson's rule), which has been related to increased larval mortality associa...

The mouse opossums of the genus Thylamys constitute a group of species mainly adapted to open xeric-like habitats and restricted to the southern portion of South America. We used molecular data (mitochondrial and nuclear sequences) to evaluate the phylogenetic and biogeographical relationships of all currently known living species of the genus, rec...

It is widely recognized that macroecological patterns are not independent of the evolution of the lineages involved in generating these patterns. While many researchers have begun to evaluate the effect of ancestor–descendant relationships on observed patterns using the phylogenetic comparative method, most macroecological studies only utilize the...

The genus Perinereis, family Nereididae, consists of approximately 66 worldwide distributed species with marine, estuarine, and freshwater representatives. The objective of this study is to use morphological and molecular traits to evaluate the taxonomic differentiation of the estuarine polychaete P. gualpensis. Also we reconstruct the phylogenetic...

Some rodent species undergo explosive population irruptions in short periods of time, a phenomenon known as mouse outbreaks, or "ratadas". Although their causes owe to multiple factors, the temporal course is well known: an abrupt population increase up to a peak, followed by a breakdown phase. The microevolutionary consequences of mouse outbreaks...

At the macroevolutionary level, one of the first and most important hypotheses that proposes an evolutionary tendency in the evolution of body sizes is "Cope's rule". This rule has considerable empirical support in the fossil record and predicts that the size of species within a lineage increases over evolutionary time. Nevertheless, there is also...

Recently, it has been proposed that the one of the main determinants of complex societies in Hymenoptera is colony size, since the existence of large colonies reduces the direct reproductive success of an average individual, given a decreased chance of being part of the reproductive caste. In this study, we evaluate colony size evolution in corbicu...

GenBank Access Number for the nuclear genes of each species used in this study. (PDF)

Bayesian tree sample, Bayesian consensus tree, and Maximum Likelihood tree used for comparative analyses. All trees are calibrated with fossil data (see methods). (TXT)

Maximum Head-Body length (mm), and GenBank Access Number for Oryzomyini' species used in phylogenetic comparative analysis. Missing data for maximum head-body length are indicated by gap (−). (*) species used as outgroup. (DOC)

Sequences from two mitochondrial genes (cytochrome b and NADH1) were used to produce a molecular phylogeny for 12 named and two undescribed species of the genus Oligoryzomys. All analyses placed Oligoryzomys microtis as the most basal taxon, a finding consistent with previous studies that suggested the west-central Amazon as a centre of origin for...

We evaluated systematic relationships among most of the subspecies of the long-haired sigmodontine mouse Abrothrix longipilis in Chile. We sequenced the complete cytochrome-b gene and 634 base pairs of intron 7 of the b-fibrinogen gene from specimens from 17 localities along the distributional range of A. longipilis. Phylogenetic analyses confirm A...

Two competing hypotheses have been suggested to explain thermal sensitivity of lizards to environmental conditions. These are the static and the labile hypotheses. The static hypothesis posits that thermal physiology is evolutionary conservative and consequently relatively insensitive to directional selection. Contrarily, the labile hypothesis stat...

The purpose of this study was to test for correlations of mass-independent nonshivering thermogenesis (NST) in rodent species with climatic factors such as maximum and minimum geographic temperature. We first analyzed whether the responses of rodents show a phylogenetic signal. If so, and if the NST over a broad geographical range is similar, then...

Recent phylogenetic studies of the subfamily of cricetid rodents (Sigmodntinae) have validated the taxonomic classification at the tribal level of the Andean Clade. It is possible that some endemic species from Patagonian South America are part of this new tribe, but previous studies have not evaluated this hypothesis due to the difficulty of obtai...

a b s t r a c t The generally accepted hypothesis regarding the origin of fossorial mammals proposes adaptive conver-gence from open environments towards the use of subterranean environments. We evaluated this hypothesis for South American mole-mice using conventional and Bayesian frameworks, with indepen-dent evidence. By using a molecular approac...

Abrothrix olivaceus is the most abundant and widespread species of sigmodontine rodent in Chile. We evaluated phylogeographic relationships within A. olivaceous based on analyses of 67 specimens collected along most of the distributional range of the species. We used nucleotide sequence data from the hypervariable domain I of the mitochondrial DNA...

Abrothrix olivaceus is the most abundant and widespread species of sigmodontine rodent in Chile. We evaluated phylogeographic relationships within A. olivaceous based on analyses of 67 specimens collected along most of the distributional range of the species. We used nucleotide sequence data from the hypervariable domain I of the mitochondrial DNA...