Juan Carlos Ortiz

University of Concepción · Departamento de Zoología

El bosque de Ruil (Nothofagus alessandrii) se encuentra en la formación bosque cadu-cifolio maulino de Gajardo (1983) o bosque caducifolio mediterráneo costero de Luebert y Pliscoff (2017). Esta formación se distribuía en la zona costera de la Región del Maule en una franja fragmentada de 100 km de largo (San Martín y Donoso, 1996; Santelices et al...

El bosque de Ruil (Nothofagus alessandrii) se encuentra en la formación bosque cadu-cifolio maulino de Gajardo (1983) o bosque caducifolio mediterráneo costero de Luebert y Pliscoff (2017). Esta formación se distribuía en la zona costera de la Región del Maule en una franja fragmentada de 100 km de largo (San Martín y Donoso, 1996; Santelices et al...

Las turberas de Sphagnum son humedales que han comenzado a ser un recurso económico con la cosecha de la cubierta vegetal del musgo Sphagnum. Esta situación ha preocupado por el impacto que conlleva a la hidrología de estos ecosistemas y a la presencia de anfibios, como se ha demostrado en otros países como Canadá. El objetivo de este capítulo es a...

Darwin's frogs Rhinoderma darwinii and Rhinoderma rufum are the only known species of amphibians in which males brood their offspring in their vocal sacs. We propose these frogs as flagship species for the conservation of the Austral temperate forests of Chile and Argentina. This recommendation forms part of the vision of the Binational Conservatio...

We review the taxonomic status of Liolaemus islugensis Ortiz & Marquet, 1987, a scarcely known species belonging to the L. montanus group, that was propose as a junior synonym of L. pantherinus Pellegrin, 1909. The comparison of the original descriptions of both species and the review of the type material and other specimens allow us to validate L....

The genus Alsodes is the most diverse amphibian taxon of southern Andes, where a series of endemic species occur from north to south (∼33° to 48°30′S), mainly on the western slopes (Chile), with little overlap of geographic ranges. In this study, we describe a new population of Alsodes from the western slopes of the Andes (Fundo El Rosario, 36°52′S...

Nannophryne variegata is an endemic species of the southern forests of Chile and Argentina. It has a wide distribution in Chilean territory and to a lesser extent, in Argentine territory. Along this extensive latitudinal distribution, it inhabits different ecological regions, characterized mainly by low temperatures and high precipitation. There ar...

Abstract In his recent self-published book "Reptiles en Chile", Diego Demangel Miranda presented 13 taxonomic changes for liolaemid and tropidurid lizards. While these could be considered validly published according to the International Code of Zoological Nomenclature, we show that these taxonomic propositions lack the necessary scientific rigor in...

In his recent self-published book "Reptiles en Chile", Diego Demangel Miranda presented 13 taxonomic changes for liolaemid and tropidurid lizards. While these could be considered validly published according to the International Code of Zoological Nomenclature, we show that these taxonomic propositions lack the necessary scientific rigor in terms of...

Liolaemus audituvelatus (Núñez Yáñez 1983) and L. manueli (Núñez, Navarro, Garín, Pincheira-Donoso Meriggio 2003) are endemic species of the Atacama Desert of northern Chile that belong to the montanus group. Both species are considered cryptic from each other and can only be distinguished by their distribution ranges and karyotypes. Originally, th...

Zootaxa 4438 (2): 283-298 Abstract Liolaemus audituvelatus (Núñez & Yáñez 1983) and L. manueli (Núñez, Navarro, Garín, Pincheira-Donoso & Meriggio 2003) are endemic species of the Atacama Desert of northern Chile that belong to the montanus group. Both species are considered cryptic from each other and can only be distinguished by their distributio...

In the present study, the taxonomic status of Microlophus heterolepis and M. yanezi is reviewed. Although M. heterolepis is one of the identified species present in Chile, incongruity about their geographical distribution, habitat and ecological characteristics are evident, so its true determination is an issue. Type materials and original descript...

Phylogenomic approaches offer a wealth of data, but a bewildering diversity of methodological choices. These choices can strongly affect the resulting topologies. Here, we explore two controversial approaches (binning genes into "supergenes" and inclusion of only rapidly evolving sites), using new data from hyloid frogs. Hyloid frogs encompass ∼53%...

One of the most characteristic and abundant amphibian taxa of South American temperate forests is Eupsophus. The ten currently recognized species of the genus have been divided in two species groups, roseus and vertebralis, but most of them, eight, belong to the roseus group. Recent phylogeographic and phylogenetic studies have suggested that speci...

Compilation of localities of the genus Eupsophus (including Fig A). (DOCX)

Examples of intrapopulation variation of diagnostic characters frequently used in the taxonomy of the Eupsophus roseus group. (DOCX)

Graphical results of the analysis ABGD. (DOCX)

Kimura two-parameter distances among the seven candidate species (CSs) obtained with mPTP and relaxed ABGD analyses. (DOCX)

Bioacoustic studies (including Table B). (DOCX)

Chromosome studies. (DOCX)

Geographic distribution overview of the Eupsophus roseus group. (DOCX)

Additional examples of phenotypic external variation in two new populations of Eupsophus roseus. (DOCX)

Biological material used to obtain DNA sequences in this study and GenBank accession numbers. (DOCX)

Taxonomic overview (including Table A). (DOCX)

Herein we catalogue all geckos (Gekkonidae, Phyllodactylidae and Sphaerodactylidae) collected by Roberto Donoso-Bar-ros in Venezuela between 1963 and 1964, deposited in the Universidad de Concepción in Chile. Donoso-Barros did not provide detailed descriptions of two species of Gonatodes named by him, despite both being valid species. We take the o...

Rhinella spinulosa is one of the anuran species with the greatest presence in Chile. This species mainly inhabits mountain habitats and is distributed latitudinally along the western slope of the Andes Range. These habitats undergo great temperature fluctuations, exerting pressure on the amphibian. To identify the physiological strategies and therm...

The presence of precloacal pores is frequently used to differentiate Liolaemus males from females. Currently, this character is confusing in Liolaemus jamesi because it has been described the presence and absence in females. Here it was confirmed that L. jamesi males and females have precloacal pores.

Ten years have elapsed since the last general synthesis of the state of knowledge of amphibians of Chile was published. During this period there have been numerous contributions to the knowledge of these organisms and implemented actions aimed at their conservation. The aim of this paper is to describe the progress in different scientific areas and...

The material collected by Roberto Donoso Barros in Venezuela between 1963 and 1964 deposited at the Universidad de Concepción in Chile is catalogued and commented. Species are ordered following current systematic; specimens and species of interest are commented, especially those type material described by RDB.

Chaltenobatrachus grandisonae was first collected in Puerto Edén, Wellington Island, Magallanes Region, Chile, where the species has never been found again. Subsequently Basso et al. (2011) found it in two new localities in Lago del Desierto and Lago Nansen, Santa Cruz province, southern Patagonia, Argentina. Recently Cisternas et al. (2013) report...

RESUMEN Se revisa el material herpetológico recolectado por Roberto Donoso Barros en Venezuela entre los años 1963 y 1964, el cual se encuentra depositado en la colección de vertebrados de la Universidad de Concepción, Chile. Se ordena taxonómicamente respetando los conceptos actualmente establecidos. Por último, cuando es necesario se hacen coment...

This study describes a new species of lizard of the genus Liolaemus (L. lonquimayensis), without precloacal pores, associated with the lava flows of the Lonquimay volcano in the Región de la Araucanía, Chile. This species belongs to the elongatus clade, and is a sister lineage of L. elongatus. L. lonquimayensis differs from its sister species, L. e...

Clinal variation is defined as gradual variation in a character associated with geographic distance among sites. Microlophus atacamensis is a medium large lizard species which inhabits the intertidal zone of northern Chile, distributed from Antofagasta (23° 39′ S) to Arrayán, La Serena (29° 41′ S) in a gradient which could show clinal variation. Ge...

The Southern Darwin’s frog Rhinoderma darwinii is a charismatic, mouth-brooding amphibian endemic to temperate forests of South America with a Vulnerable conservation status according to the IUCN Red List. We developed microsatellite markers from next generation sequence data that will aid genetic monitoring during and after re-introduction efforts...

The biodiversity of the entire planet is threatened by global warming, and among vertebrates, Amphibia is the taxon most negatively affected by this problem. Amphibians depend on an external heat source to achieve and maintain an adequate body temperature, which has a signifi cant impact on their fi tness. Therefore, an increase in the average envi...

Darwin's frogs (Rhinoderma darwinii and R. rufum) are two species of mouth brooding frogs from Chile and Argentina that have experienced marked population declines. Rhinoderma rufum has not been found in the wild since 1980. We investigated historical and current evidence of Batrachochytrium dendrobatidis (Bd) infection in Rhinoderma spp. to determ...

The effects of a perturbation gradient on a Patagonian rodent community were assessed over the course of a year by comparing the community parameters in natural and different disturbed environments in the central Chilean Patagonia. The studied habitat types were mature forest, second-growth forest, forest plantations, and agricultural grassland. We...

Comparative phylogeography describes the patterns of evolutionary divergence and whether or not they are congruent, in co-distributed populations of different taxa. If the populations of these taxa have been co-distributed for a prolonged time, and if the times between processes of perturbation or vicariance have been more or less stable, it is exp...

We present the first records of the Chilean tree mouse (Irenomys tarsalis) and Valdivian long-clawed mouse (Geoxus valdivianus) in non-native forestry plantations. Despite being characterized as forest species, specimens of I. tarsalis and G. valdivianus were captured within a 30-year-old Pinus contorta plantation in Coyhaique National Reserve. The...

In the laboratory, wild-caught male Rhinoderma darwinii frogs, but not females, changed body colour from brown to green starting with the appearance of green dorsal spots or a greenish dorsal tone on a brown body colour. After a year in captivity, most males exhibited a greenish or complete green dorsal colour, probably induced by the terrarium's s...

We studied how features of thermal resources affect the patterns of activity of predator (Callopistes maculatus) and its prey (Gyriosomus batesi and Gyriosomus subrugatus) during the phenomenon of the Flowering Desert in Chile. We predict that restrictions or variations in temperature affect mainly the activity of insects, and that this variation i...

The frog genus Atelognathus is currently represented by nine species distributed in Argentinean and Chilean Patagonia. It is mainly distributed in Argentina, and there are only three species in Chile (A. ceii, A. grandisonae and A. jeinimenensis). Regarding the morphological relationships among Atelognathus species, Meriggio et al. (2004) suggest t...

Age, longevity, size, and the effects of climate on growth and age at sexual maturity were analyzed in four populations of Pleurodema thaul (Leiuperidae) from Chile by comparing two populations at different latitudes but similar altitude (Limari and Chatten), and two populations at similar latitude but different altitudes (Itata and Laja). Body siz...

Studies of felines have attempted to identify individuals by their tracks, since this ability would allow obtaining data such as the presence/absence and abundance of these species, which are difficult to obtain because of their secretive habits. Distinguishing between the sexes is important, because it permits estimation of the sex ratio and the r...

Behavioral and physiological mechanisms of thermoregulation in ectotherms are conditioned by thermal constraints. These mechanisms may be even more restrictive when environmental conditions are unfavorable for individuals, especially when sexual dimorphism segregates the sexes spatially. In order to understand behavioral and physiological regulatio...

Observations and pictures of two snakes, Tachymenis peruviana Wiegmann, 1836, and Tachymenis chilensis(Schlegel, 1837), were taken in the Atacama coastal desert, province of Antofagasta, Chile. Furthermore, in the collection of the Museo Nacional de Historia Natural de Santiago, we found two individuals of T. c. chilensis from Cachapoal and Talcapr...

The genus Diplolaemus Bell, 1843 is a common squamate component of the Patagonian region of South America. Considerable taxonomic confusion exists within this genus, particularly about the status of Chilean-Andean populations and the actual distribution of D. leopardinus (Werner, 1898). In an attempt to clarify the taxonomic status and distribution...

The gemís Diplolaemus Bell, 1843 is a common squamate component of the Patagonian región of South América. Considerable taxonomic confusión exists within this gemís, particularly about the status of Chilean-Andean populations and the actual distribution of D. leopardinas (Werner, 1898). In an attempt to clarify the taxonomic status and distribution...

We studied the geographic variation of skulls of Lycalopex culpaeus using qualitative and quantative analyses. The sampling area covered Chile, from its northern portion, to Tierra del Fuego and the neighbouring Hoste Island, as well as part of Argentina. Five subespecies are currently recognized from this large area. We found two morphotypes that...

The delimitation of species is a major issue in systematic biology and has been a re-emerging discipline in the last decade. A number of studies have shown that the use of multiple data sets is critical for the identification of cryptic species, particularly in groups with complex evolutionary histories. Liolaemus monticola is a montane lizard spec...

We studied the geographic variation of skulls of Lycalopex culpaeus using qualitative and quantative analyses. The sampling area covered Chile, from its northern portion, to Tierra del Fuego and the neighbouring Hoste Island, as well as part of Argentina. Five subespecies are Currently recognized front this large area. We found two morphotypes that...

The interspecific variation of heating rates in Liolaemus lizards, suggests an adaptive value of this physiological thermoregulatory mechanism, which would allow lizards to cope with the environmental thermal restrictions, imposed to behavioral thermoregulation. This trend has barely been tested at intraspecific level, and here we explore if intras...

In this study, we used a recently developed supertrees method to test for shared phylogeographical signal in partially overlapping geographical ranges of lizards of the genus Liolaemus from the Andean Range in south-central Chile. We reconstruct mtDNA gene trees for three partially codistributed species (Liolaemus tenuis, L. lemniscatus and L. pict...

Se aplicó un modelo de simulación estocástico para evaluar la proyección numérica de la población del huemul del sur (Hippocamelus bisulcus) en Chile Central (Nevados de Chillán), población en la que se ha observado una disminución persistente durante las últimas décadas. Estimaciones empíricas sugieren que en poco tiempo sus relictos actuales se e...

In order to evaluate the population projection for the huemul of the south (Hippocamelus bisulcus) in Central Chile (Nevados de Chillán), a stochastic simulation model was applied. This population has continually decreased in size over the last decade and empirical estimates suggest that in a short time the current relicts of this population would...

We studied sexual and geographic variation of color patterns in the lizard Liolaemus tenuis. We counted the number of scales with different colors in two body regions, in individuals of both sexes, from three groups of populations along a latitudinal range. Color patterns showed sexual and geographic variations; females and the northern group were...

We studied sexual and geographic variation of color patterns in the lizard Liolaemus tenuis. We counted the number of scales with different colors in two body regions, in individuals of both sexes, from three groups of populations along a latitudinal range. Color patterns showed sexual and geographic variations; females and the northern group were...

Liolaemus monticola is a mountain lizard species, with a widespread distribution from central Chile that displays several highly polymorphic chromosomal races. Our study determined the phylogeographic structuring and relationships among three chromosomal races of L. monticola in Chile. Mitochondrial DNA (mtDNA) sequences of the cytochrome b gene we...

The ascidian Pyura chilensis is an ecologically important species due to its aggregates, providing habitat for other species. In addition, it is an economically important species being commercially exploited along the coast of Chile. Here, changes in distribution and abundance have been observed during the last decade that have been linked to overf...

The ascidian Pyura chilensis is an ecologically important species due to its aggregates, providing habitat for other species. In addition, it is an economically important species being commercially exploited along the coast of Chile. Here, changes in distribution and abundance have been observed during the last decade that have been linked to overf...

Se entrega un resumen histórico del desarrollo de la herpetología en Chile, con una comparación desde la situación entregada por el libro de J.M. Cei en 1962, "Batracios de Chile", hasta la situación actual. Además, se entrega una síntesis de la distribución geográfica de las diferentes especies de anfibios en Chile y se indican aquellas que son co...

Liolaemus tenuis is a widely distributed arboreal lizard species in central-southern Chile. Although two subspecies, L. t. tenuis and L. t. punctatissimus, have been described based on sexual dimorphism, their characteristic have not been accurately demarcated. Therefore, both traditional and geometric morphometrics were used to study the morpholog...

The Eight Region has the second highest number of cases of Hantavirus Cardiopulmonary Syndrome (HCPS) in humans for Chile. A study was performed to identify the number of rodents serologically positive to hantavirus and their local distribution in this region. To achieve this goal, we sampled eleven sites in the four provinces of the region. Seven...

The Eight Region has the second highest number of cases of Hantavirus Cardiopulmonary Syndrome (HCPS) in humans for Chile. A study was performed to identify the number of rodents serologically positive to hantavirus and their local distribution in this region. To achieve this goal, we sampled eleven sites in the four provinces of the region. Seven...

Chile has made varied efforts to avoid the lost of its biodiversity, Laws, workshops and symposia have been promulgated and developed with the purpose to analyze and to improve this topic. These activities have been efficient to categorize the flora and fauna of the national territory. However, to achieve a consent of the basic limits to continue w...