Esteban O. Lavilla's research while affiliated with National Scientific and Technical Research Council and other places

Publications (67)

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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...
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We seek to (re)construct a geocritical narrative for the essence of place, by (re)writing mountain specificities that imprint cultural traits on tropical and temperate Andean landscapes, creating a unique identity trilemma for the people of highland South America. We use onomastics as a study of mistaken individuality, with a poststructuralism appr...
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In September 2005, the IUCN Species Survival Commission (SSC) held a summit for the conservation of amphibians where specialists from around the world agreed that, in addition to the need to document the declines and extinctions, we need to promote action strategies designed to respond to the global biodiversity crisis. The outcome of this summit w...
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The interaction between organisms and their environment is central in functional morphology. Differences in habitat usage may imply divergent morphology of locomotor systems; thus, detecting which morphological traits are conservative across lineages and which ones vary under environmental pressure is important in evolutionary studies. We studied i...
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Between mid-May and early June of 1839, members of the United States Exploring Expedition collected diverse anurans in the environs of Valparaíso, Chile, later described by Girard in 1853. Of this set of species, Metaeus timidus, described there as a new genus and species, attracts attention because is a name that practically disappeared from the h...
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El público general desconoce que la República Argentina es uno de los países con mayor diversidad de anfibiosen América Latina, presentando unas 175 especies, con una gran proporción de endemismos, ciclos de vidaúnicos y adaptaciones fisiológicas y/o comportamentales a ambientes extremos (entre otras). La visión generales que la diversidad de anfib...
Book
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El Plan de Acción para la Conservación de los Anfibios de la República Argentina que reseña un conjunto de 47 acciones que responden a 18 problemáticas identificadas, agrupadas en 6 componentes que pueden acometerse en plazos preestablecidos. El Plan propone ejecutar estas acciones que los especialistas convocados han considerado prioritarias o nec...
Article
After more than two and half centuries regarding the identity of Rana margaritifera Laurenti, 1768, Lavilla et al. (2013) designated a neotype for the species. The authors did an extensive search to locate the type material of Laurenti (1768) and failed in finding the specimen in question. Consequently, they selected an adult female collected in th...
Article
The chytrid fungus Batrachochytrium dendrobatidis (Bd) is one of the most important contributors for the decline of amphibian populations worldwide. Evidence indicates that the harmfulness of Bd infection depends on the species and life stage, the fungus strain, the season and environmental factors. In the present paper, we experimentally investiga...
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Four species of Pseudopaludicola, Pseudopalud­ icola boliviana, P. falcipes, P. mystacalis and P. ternetzi, are usually cited for Paraguay. However, after analyzing 407 specimens assigned to this genus in herpetological collections of the country, we conclude that there are no specimens of P. falcipes in Paraguayan collections or vouchers cited in...
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The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & Nemésio 2007; Donegan 2008, 2009; Nemésio 2009a–b; Dubois 2009; Gentile & Snell 2009; Minelli 2009;...
Data
This plot is not part of the published stance but derives from it. The plot shows the number of authors by geographic region (courtesy of Dr. Diego Astua).
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The hylid genus Phyllomedusa comprises charismatic frogs commonly known as monkey, leaf or green frogs, and is the most diverse genus of the subfamily Phyllomedusinae, including about 31 species. Although there is some information about the anatomy of these frogs, little is known about the osteology. Here the adult skull of Phyllomedusa sauvagii, b...
Article
The genus Pseudopaludicola was erected by Miranda–Ribeiro, 1926 to accommodate Liuperus falcipes Hensel, 1867a. Currently, there are 18 recognized species of Pseudopaludicola, with 45% of the species described since 2003. Although Pseudopaludicola falcipes is the type species, Hensel’s description lacked designation of type specimens for that speci...
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Estudios acerca de la diversidad e historia natural de comunidades de anuros son elementales para distinguir entre fluctuaciones naturales de aquellas causadas por impactos antrópicos (herramienta clave en programas de conservación), evaluar el papel que juegan en la dinámica de los ecosistemas y permitir comparaciones de gradientes de diversidad....
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Elachistocleis haroi (Anura: Microhylidae) was described from the provinces of Jujuy, Salta and Formosa in Argentina and the Tarija department in Bolivia. Based on specimens housed in the Museo Nacional de Historia Natural del Paraguay and Colección Zoológica de la Facultad de Ciencias Exactas y Naturales, we extend the range of the species to the...
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The Ybyturuzú Managed Resources Reserve (RRMY in Spanish) (Guairá Department, Paraguay) located in the Atlantic Forest Bioma, is seriously endangered by the advance of deforestation, hydrological degradation and habitat fragmentation. Between 2008 and 2011, studies directed to know the richness, composition and conservation status of the amphibian...
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In zoological nomenclature, to be potentially valid, nomenclatural novelties (i.e., new nomina and nomenclatural acts) need first to be made available, that is, published in works qualifying as publications as defined by the International Code of zoological Nomenclature (“the Code”). In September 2012, the Code was amended in order to allow the rec...
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Rana margaritifera was described by Laurenti in 1768 and currently is associated to the genus Rhinella, under the com-bination Rhinella margaritifera. Currently, the R. margaritifera species group consists of 16 recognized species. Further-more, many additional species have been suggested to exist in this group which highlights the ambiguity surrou...
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Rana lutea is one of the two anuran species described in 1782 by the Chilean born priest and naturalist Juan Ignacio Molina, and its nomenclatural history is confusing. After a detailed revision of the pertinent literature, we demonstrate that Bufo thaul Schneider, 1799, is a junior objective synonym of Rana lutea Molina, 1782, but based on the usa...
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Species of the genus Pleurodema are relatively small, plump frogs that mostly occur in strong-seasonal and dry environments. The genus currently comprises 14 species distributed from Panama to southern Patagonia. Here we present a phylogenetic analysis of Pleurodema, including all described species and several outgroups. Our goals include testing i...
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Phyllomedusa sauvagii lays its eggs surrounded by peculiar vesicles in nests made with tree leaves and, until now, the function of these vesicles was thought to be for maintaining moisture. The histomorphological and histochemical analysis of the oviduct of individuals in ovulatory period, and the study of the vesicles in the oviduct, ovisac and in...
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Review of the literature and recently available field notes from the collector of the type allows a reconsideration of the identity of the Linnaean name Rana typhonia. We provide evidence to demonstrate that the Linnaean species is neither a bufonid nor an Asiatic ranid, but a Neotropical hylid. Subsequently, we consider Rana typhonia as an older s...
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Assessing Biodiversity Declines Understanding human impact on biodiversity depends on sound quantitative projection. Pereira et al. (p. 1496 , published online 26 October) review quantitative scenarios that have been developed for four main areas of concern: species extinctions, species abundances and community structure, habitat loss and degradati...
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Zachaenus roseus Cope, 1890, has puzzled systematists working in southern South America. A single individual, the holotype, has ever been collected and this specimen is in extremely poor preservation condition. Herein, the precise location of the type locality of Z. roseus is determined based on a historical review of the literature. Furthermore, f...
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Article The identification of Rana ocellata Linnaeus, 1758. Nomenclatural impact on the species currently known as Leptodactylus ocellatus (Leptodactylidae) and Osteopilus brunneus (Gosse, 1851) (Hylidae) Abstract The usage of the name Rana ocellata Linnaeus, 1758, is plagued by misidentifications and misinterpretations. After an exhaustive bibliog...
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We describe the bufonid gastromyzophorous tadpoles of Rhinella quechua from montane forest streams in Bolivia. Specimens were cleared and stained, and the external morphology, buccopharyngeal structures, and the musculoskeletal system were studied. These tadpoles show a combination of some traits common in Rhinella larvae (e.g., emarginate oral dis...
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Infection by the chytrid fungus Batrachochytrium dendrobatidis was detected in a dead adult of the yellow belly frog (Elachistocleis bicolor) in Misiones province, Argentina. The analysis of the skin through standard histological procedures revealed the presence of chytrid sporangia in different stages. This is the first report of B. dendrobatidis...
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This study deals with the histology and histochemistry of the oviducts of three species of frogs that lay their eggs embedded in a foam nest (Leiuperidae: Physalaemus biligonigerus and Pleurodema borellii; Leptodactylidae: Leptodactylus chaquensis). In all of them the oviducts show five sections [in cephalic-caudal direction, the Pars Recta (PR), I...
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The finding of tadpoles of Rhinella quechua (Huayramayu River, Carrasco National Park, Cochabamba, Bolivia) with oral abnormalities caused by Batrachochytrium dendrobatidis constitutes the first record of this fungal infection reported for Bolivian amphibians.
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Hypsiboas curupi was recently described by Garcia et al. (2007), based on material – previously considered as H. semiguttatus – from several localities of the province of Misiones, Argentina. In a recent checklist of the amphibians of Paraguay, Brusquetti and Lavilla (2006) included the name Hypsiboas aff. semiguttatus for some of the specimens hou...
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Os padrões de distribuição geográfica dos anfíbios da América do Sul têm sido abordados sob diferentes métodos e modelos biogeográficos, muitos deles am-plos e de difícil caracterização frente à riqueza e à especificidade de habitats desse grupo biológico. Igual-mente, muitas das análises e propostas biogeográficas tradicionais abordam táxons supra...
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La fauna de anfibios de Paraguay es una de las menos conocidas si la comparamos con la de otros países del sur de América del Sur. Luego de una exhaustiva revisión de las colecciones de diversos museos, así como de la bibliografía pertinente, estamos en condiciones de presentar una lista comentada que incluye tres especies de cecilias y 79 taxa de...
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Eupsophus calcaratus, a leptodactyloid frog from the austral Andean forests of Argentina and Chile, has endotrophic, nidicolous tadpoles. We studied a metamorphic series from Stages 31 to 46 of Gosner's developmental table (1960). Other than the scarce pigmentation, proportionately large eyes, and massive developing hindlimbs, the remaining externa...
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The genus Telmatobius in Argentina: a synthesis. – The genus Telmatobius in Argentina comprises 14 species, but the material housed in diverse collections, plus the existence of several unexplored areas in the western montane areas, suggests that several taxa remain to be described. Up to now, studies on this genus focused on taxonomic descriptions...
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After the description of the chondrocranium, hyobranchial apparatus, associated musculature, buccal apparatus, buccopharyngeal cavity, digestive tract, and gut contents, it was possible to define the feeding modes of Scinax nasicus and Hyla nana tadpoles (Gosner Stages 31-36). Scinax nasicus larvae are "typical" microphagous tadpoles, with keratodo...
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Elachistocleis skotogaster spec. nov. is described from the Andean Yungas of Argentina. It is unique in the genus in having belly and legs densely spotted with brown, an uniformly dark brown dorsal mottled with black, absence of a light vertebral strip, a fold behind the mouth but not a postcommisural gland. Its natural history and advertisement ca...
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Se reevaluaron los anfibios categorizados como "Insuficientemente Conocidos" para la República Argentina. De ellos, 18 taxa se mantienen en dicha categoría; cuatro son considerados "No Amenazados"; cuatro se consideran "Vulnerables", cuatro son excluidos de la batracofauna argentina y siete no pueden ser ubicados en ninguna de las categorías preexi...
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En la presente nota discutimos algunos aspectos de la nomenclatura, tipos portadores de nombre y localidades tipo de un conjunto de taxa del grupo Hyla pulchella (en el sentido de Duellman et al., 1997), incluyendo a Hyla pulchella cochabambae, Hyla pulchella cordobae e Hyla andina.
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The internal oral morphology of tadpoles of Dermatonotus muelleri and Elachistocleis bicolor were analyzed using scanning electron and stereoscopic microscopy. Similarities between these larvae include the architecture of the buccal roof and floor: wide and almost flattened surfaces; unperforated internal nares appearing as circular depressions; ab...
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La porción argentina de la Ecorregión Yungas Andinas incluye las selvas de montaña de las provincias de Jujuy, Salta, Tucumán y Catamarca, donde se extiende como una faja que se ubica entre los 300 y 3000 m s.n.m. por aproximadamente 800 km de longitud N-S. Allí se han registrado hasta el momento 39 especies, siendo la familia Leptodactylidae la me...
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Melanophryniscus rubriventris rubriventris larvae are described based on 18 individuals in stages 31-34 of Gosner's (1960) developmental table. They are similar to other tadpoles of Melanophryniscus in terms of overall morphology, but differ from Melanophryniscus moreirae, M. orejasmirandai, and M. sanmartini in the formula of keratodont rows, from...

Citations

... To address our goals, we set a study in the temperate forests of southern Chile, a system characterized by naturally low animal species richness and high levels of endemism (Armesto et al., 1998(Armesto et al., , 1995. Previous explorations in the canopy showed that the vertical profile of these forests are used by one marsupial, five rodents, at least one carnivore, two frogs, one reptile and many birds (Díaz et al., 2010;Moreira-Arce et al., 2021;Rabanal et al., 2021;Tejo and Fontúrbel, 2019). Nevertheless, little is known on wildlife use of different strata within the vertical profile. ...
... [5][6][7][8]. These studies, together with additional updates on their distribution ranges, provide essential information for the implementation of conservation programs [9][10][11][12]. However, there are still significant gaps regarding species distribution and taxonomy. ...
... Interestingly, previous research found microhabitat use by adult frogs to be a weak phylogenetic character (Eterovick et al., 2010;Moen et al., 2016), even though microhabitats play an important role in diversification processes (Bardua et al., 2021). Certain phylogenetically relevant anatomical traits, such as limb and pelvic features of the locomotor system (Fratani, et al. 2018a;Fratani, et al. 2018b), have been described to be relevant to microhabitat use (de Oliveira-Lagôa et al., 2019;Buttimer et al., 2020;Stepanova and Womack, 2020). For instance, when habitat use is categorised considering the locomotor modes, habitats show a strong phylogenetic correlation with locomotor anatomy (Fratani et al., 2020). ...
... The global population size of this frog is limited to a few thousand individuals (Velasco et al., 2019b). However, information on extinction risk and population dynamics is needed to help lead management actions (Vaira, Akmentins & Lavilla, 2018). ...
... Most anuran amphibians present MDL in their skin Barbetta, 1958;Centeno et al., 2015;Clemente-Carvalho et al., 2009;da Silva et al., 2017;Drewes et al., 1977;Eberth, 1869;Elkan, 1968;Ferraro et al., 2013;Garcia et al., 2011;Kastschenko, 1882;Kosmala et al., 2020;Lenzi-Mattos et al., 2005;Mailho-Fontana et al., 2021;Mangione et al., 2011;Mangione & Lavilla, 2004;Pelli et al., 2007Pelli et al., , 2010Ponssa et al., 2017;Quinzio & Fabrezi, 2012;Sampson et al., 1987;Schwinger et al., 2001;Taylor et al., 1966;Toledo & Jared, 1993b;Uchida et al., 1993;Verhaagh & Greven, 1982;Vickaryous & Sire, 2009;Zepp, 1923). It is less developed on the ventral side of the body than on the dorsal region Elkan, 1968;Mangione et al., 2011;Toledo & Jared, 1993a, 1993b. ...
... As described by many authors, the internal oral morphology of tadpoles of the Microhylidae is relatively uniform and the features observed in Elachistocleis in this study are similar to the species previously described: Dermatonotus muelleri, Ramanella obscura, Kaloura rugifera, K. borealis, Chiasmocleis leucosticta, Microhyla rubra (Echeverría & Lavilla, 2000;Bowatte & Meegaskumbura, 2011;Zhou et al., 2011;Langone, Lavilla, Echeverría, Mangione, & Segalla, 2007). ...
... ampliada de la Sección 4.10, Registro de hongos. Protocolos en campo y laboratorio); dichas pautas constituyen tanto elaboración de los autores de esta Sección por experiencias propias, como recopilación de información de otras publicaciones (46)(47)(48) y están enfocadas principalmente a minimizar la transmisión y dispersión de enfermedades presentes en especies de anuros de Argentina y la región como: quitridiomicosis (Batrachochytrium dendrobatidis), ranavirus (15) , oomicetes (16,17,(49)(50)(51)(52)(53) ; y también considerando la dispersión de otros organismos considerados invasores, recientemente detectados, como el alga "Didymo" (Didymosphenia geminata), que ya está presente en diferentes cuerpos de agua de Argentina (e.g.: ambientes fluviales y lacustres a lo largo de la Patagonia Andina desde Neuquén a Tierra del Fuego) (48,54) . ...
... The Rhinella margaritifera species group comprises medium-sized bufonid frogs that inhabit forest leaf litter and present a wide distribution in South America and adjacent Central America (Frost 2022). The taxonomic history of this species group has been considered problematic (Moravec et al. 2014;Santos et al. 2015), especially since Rhinella margaritifera regained its previous status as species inquirenda, without a type locality or a known associated population (Lavilla et al. 2017). The main difficulty to resolving the taxonomy of this group is posed by cryptic morphological patterns of member species and absent of type series for morphological species comparisons (Caramaschi & Niemeyer 2003;Caramaschi & Pombal 2006). ...
... The genus Pseudopaludicola currently comprises 25 nominal species of small-sized Neotropical frogs (Andrade et al. 2020;Frost 2020), which are widely distributed in open environments from southern Mexico to Argentina (Lavilla et al. 2016). Data concerning the ecological aspects of this genus still are scarce (Duré et al. 2004;Pereira & Nascimento 2004;Silva et al. 2018). ...