Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 21.896
Filtrar
1.
J Zoo Wildl Med ; 50(4): 845-852, 2020 Jan 09.
Artigo em Inglês | MEDLINE | ID: mdl-31926514

RESUMO

A complete ophthalmic exam, including intraocular pressure (IOP) measurement, is key to diagnosing ocular diseases such as uveitis and glaucoma in frogs. We performed complete ophthalmic anterior segment examinations and IOP rebound tonometry measurements using two different settings (other "p" and canine "d") for six anuran species. The objectives were to describe common ocular abnormalities found in these species, to compare IOP values between different tonometer settings, and to compare IOPs between species. Examinations revealed abnormalities including cataracts (11/98 total eyes), lenticular sclerosis (10/98) and lipid keratopathy (9/98). IOP was measured with the TonoVet® and the ranges (oculus uterque, OU mm Hg other "p" setting, canine "d" setting) were giant waxy monkey tree frogs (Phyllomedusa bicolor) (3.5-7.6; 6.5-11.7; n = 5), mission golden-eyed tree frogs (Trachycephalus resinifictrix) (7.0-9.7, 13.2-15.7; n = 6), boreal toads (Bufo boreas boreas) (0.8-5.5, 5.7-10.5; n = 13), Mexican giant tree frogs (Pachymedusa dacnicolor) (3.8-5.0, 8.3-11.8; n = 3), Lake Titicaca frogs (Telmatobius culeus) (8.8-10.5, 14.0-17.2; n = 8), and mossy tree frogs (Theloderma corticale) (9.7-11.0, 15.7-17.0; n = 5). The TonoVet canine "d" setting IOP measurements were statistically higher (P = 0.01) than the other "p" setting measurements for all species except the giant waxy monkey tree frogs. IOP was significantly lower for giant waxy monkey tree frog eyes with cataracts (P < 0.05) with the other "p" setting. IOP did not statistically differ in eyes with lenticular sclerosis. IOP can be measured by rebound tonometer in anurans, but more research is needed for species-specific references using consistent settings.


Assuntos
Anuros/fisiologia , Oftalmopatias/veterinária , Pressão Intraocular/fisiologia , Animais , Fenômenos Fisiológicos Oculares
2.
J Zoo Wildl Med ; 50(4): 868-873, 2020 Jan 09.
Artigo em Inglês | MEDLINE | ID: mdl-31926517

RESUMO

Blue poison dart frogs (Dendrobates tinctorius azureus) are commonly maintained in zoological institutions and are becoming popular in the pet trade industry. Sedation or light anesthesia is required for safe and effective handling of this species. In this study, the sedative effects of subcutaneously administered alfaxalone-midazolam-dexmedetomidine (AMD) (20, 40, 5 mg/kg, respectively) and ketamine-midazolam-dexmedetomidine (KMD) (100, 40, 5 mg/kg, respectively) were compared in a prospective, randomized, blinded, crossover study in juvenile blue poison dart frogs (n = 10). Both protocols were partially reversed 45 min after administration of either protocol with subcutaneously administered flumazenil (0.05 mg/kg) and atipamezole (50 mg/kg). Heart rate, pulmonic respiratory rate, various reflexes, and behavioral parameters were monitored after drug administration. Both protocols resulted in rapid loss of righting reflex [median (range): AMD, 5 min (5-5 min); KMD, 5 min (5-10 min)]. Time to complete recovery was similar with both protocols (mean ± SD: AMD, 97.5 ± 11.4 min; KMD, 96.5 ± 25.4 min). The AMD protocol resulted in pulmonic respiratory depression, whereas no significant difference in heart rate was found between the two protocols. All frogs were observed eating within 24 hr of chemical restraint. Gastric prolapses occurred in four frogs (AMD 3, KMD 1) that were easily reduced with a cotton-tip application. No other adverse reactions were observed. The results of this study provide two different subcutaneous chemical restraint protocols in juvenile blue poison dart frogs.


Assuntos
Dexmedetomidina/farmacologia , Midazolam/farmacologia , Pregnanodionas/farmacologia , Antagonistas de Receptores Adrenérgicos alfa 2/administração & dosagem , Antagonistas de Receptores Adrenérgicos alfa 2/farmacologia , Envelhecimento , Analgésicos/administração & dosagem , Analgésicos/farmacologia , Anestésicos/administração & dosagem , Anestésicos/farmacologia , Animais , Antídotos/administração & dosagem , Antídotos/farmacologia , Anuros , Sedação Consciente , Estudos Cross-Over , Dexmedetomidina/administração & dosagem , Quimioterapia Combinada , Flumazenil/administração & dosagem , Flumazenil/farmacologia , Hipnóticos e Sedativos/administração & dosagem , Hipnóticos e Sedativos/farmacologia , Imidazóis/administração & dosagem , Imidazóis/farmacologia , Ketamina/administração & dosagem , Ketamina/farmacologia , Midazolam/administração & dosagem , Pregnanodionas/administração & dosagem
3.
Integr Zool ; 15(1): 40-54, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31149773

RESUMO

It is well known that environmental temperature influences several biological functions of ectotherms, notably in amphibians. The high permeability of anuran skin, associated with the effect of elevated environmental temperature, potentiates the dehydration process and this combination may restrict locomotor performance. Thoropa taophora is an endemic species from the Atlantic Rainforest whose tadpoles are semiterrestrial and predominantly diurnal, and are found in rocky seashores where they are exposed to sea spray and high temperatures. In this study we investigated how temperature and salinity conditions affect the locomotor performance in Thoropa taophora tadpoles. We also assessed how different osmotic concentrations affect the activity of the metabolic pathways that support muscle function. We measured the sprint speed of tadpoles of various sizes at different temperatures and salinities in the field. We also measured the activity of the enzymes pyruvate kinase (PK), lactate dehydrogenase (LDH) and citrate synthase (CS) in different temperatures and osmotic concentrations, and calculated the thermal sensitivity and the activity constants for each osmolality. Our results showed that, in general, sprint speed decreased with increasing temperature and salinity. However, whereas the effect of increased salinity was similar in smaller and larger tadpoles, increased temperature had a higher negative impact on sprint speed of larger tadpoles, thus indicating low thermal sensitivity of small tadpoles. PK and LDH thermal sensitivities and LDH constant of activity decreased as the osmolality increased. In conclusion, the locomotor capacity of tadpoles was decreased by temperature and salinity, which may be related to a decrease in anaerobic metabolism both in terms of sensitivity and total energy turnover through enzymatic activity. We discuss the ecological consequences, including the potential impacts on predator escape behavior promoted by changes in metabolism and locomotor performance in an early stage of development of this species.


Assuntos
Anuros/fisiologia , Temperatura Alta , Atividade Motora/efeitos dos fármacos , Salinidade , Cloreto de Sódio/farmacologia , Animais , Anuros/crescimento & desenvolvimento , Relação Dose-Resposta a Droga , Larva/efeitos dos fármacos , Larva/fisiologia , Atividade Motora/fisiologia , Cloreto de Sódio/administração & dosagem , Estresse Fisiológico
4.
Chemosphere ; 240: 124910, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31561159

RESUMO

The micronucleus test has been applied for more than three decades in tadpoles, generating an early warning of environmental quality. In this study, we reviewed 48 articles on the micronucleus test in tadpoles, published between 1987 and 2018. The findings reveal that pesticides have been the main topic discussed in the induction of micronucleus and other nuclear abnormalities in anuran larvae to the detriment of the widespread use of compounds used in agriculture. In addition to pesticides, a number of other xenobiotic agents have been targeted for genotoxic damage, such as heavy metals, radiation and wastewater. An appeal is reported to environmental contaminants, which when released naturally into the environment or because of human activities may contaminate aquatic habitats, threatening populations of tadpoles that depend on these environments for their survival. Larvae can bioaccumulate these contaminants that cause progressive impacts, ranging from DNA damage to metamorphosis delays, as well as malformations. We found that Argentina is the main driving force for the application of this test in anuran larvae along with Brazil. Different erythrocyte malformations have been reported for the erythrocyte nuclear abnormalities test, binucleated cells, nuclear buds, notched, lobed, reniform, nuclear bebbled, anucleated, picnotic and apoptotic cells are the most cited. In summary, the presence of chemical or physical agents, along with other disturbances of the habitat, can have a significant impact on the life history of the species, contributing to the decline of anuran populations.


Assuntos
Anuros/genética , Ecotoxicologia/tendências , Eritrócitos/efeitos dos fármacos , Larva/efeitos dos fármacos , Larva/genética , Testes para Micronúcleos , Agricultura , Animais , Argentina , Brasil , Dano ao DNA , Ecossistema , Monitoramento Ambiental/métodos , Poluição Ambiental , Eritrócitos/patologia , Eritrócitos/fisiologia , Metais Pesados/toxicidade , Metamorfose Biológica/efeitos dos fármacos , Publicações Seriadas , Poluentes Químicos da Água/toxicidade
5.
An Acad Bras Cienc ; 91(4): e20190154, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31800706

RESUMO

Skeletochronology is the most accurate method to estimate a population age structure. The methodology is based on the analysis of secondary bone tissue in order to count growth rings. This study aimed to provide initial data, allowing researchers to further work out in the age of individuals and populations, sampling evidence of the presence of growth rings in 11 native species (representing nine families) of a subtropical region of southern Brazil. Four bone samples of each specimen were used to perform the skeletochronological analysis: the penultimate phalanges of the 3rd and 4th fingers, the humerus, and the femur. The presence of growth rings was confirmed in the periosteal layer of the bones of all analyzed species. In comparison with phalanges, growth rings of humeri and femora are more irregular and less distinguishable. This is the first record of growth rings to the native species herein analised. The skeletochronology was proved to be an effective tool in determining the age of anuran amphibians from a subtropical region, since this environment presents well defined climatic seasonality.


Assuntos
Determinação da Idade pelo Esqueleto/métodos , Anuros/anatomia & histologia , Anuros/crescimento & desenvolvimento , Animais , Brasil
6.
J Chem Ecol ; 45(11-12): 914-925, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31802386

RESUMO

Frogs in the genus Phyllobates are known for the presence of batrachotoxin, a highly toxic alkaloid, in their skin. Nevertheless, Phyllobates frogs from Costa Rica and Panama (P. lugubris and P. vittatus) are considered non-toxic, as they have been reported to harbor low concentrations of this alkaloid. However, the potential toxicity of Central American Phyllobates has not been assessed experimentally. Our goal was to determine the toxicity of the whole skin of P. vittatus, an endemic species from the Southeastern Pacific region of Costa Rica. We performed median lethal dose (LD50) tests in mice to determine general toxicity, and an irritant assay based on the behavioral responses of mice to subcutaneous injection, to determine differences in irritability, as a measure of toxicity, among three study localities. Using UPLC-ESI-QTOF, we obtained chemical profiles of the methanolic extract of frog skins. Due to the absence of mortality at the studied doses, we were unable to estimate LD50. However, we recorded a list of toxicity symptoms in mice that are consistent with cardiotoxic effects, and found that mice presented more symptoms at higher concentrations of skin extracts during the first hour of the LD50 assays, recovering completely at all doses by the end of the assay. On the other hand, we did not detect differences in irritability among studied localities. Additionally, we putatively identified three toxic alkaloids (Batrachotoxinin A, DHQ 251A and Lehm 275A). This study provides the first experimental data on the toxicity and associated symptoms in mice, as well as the chemical profile of the skin of P. vittatus. We suggest that the skin alkaloids of P. vitattus may confer a chemical defense towards predators.


Assuntos
Alcaloides/análise , Alcaloides/toxicidade , Anuros/fisiologia , Misturas Complexas/análise , Misturas Complexas/toxicidade , Pele/química , Animais , Cromatografia Líquida de Alta Pressão/métodos , Simulação por Computador , Costa Rica , Bases de Dados de Compostos Químicos , Feminino , Dose Letal Mediana , Camundongos Endogâmicos ICR , Venenos/análise , Venenos/toxicidade , Espectrometria de Massas em Tandem/métodos
7.
Zootaxa ; 4612(1): zootaxa.4612.1.1, 2019 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-31717076

RESUMO

I investigate the taxonomy of frogs currently assigned to the single species Callulops doriae, which is unique in the genus for its warty, dark-spotted dorsum and large yellow or orange blotches in the groin and on the hidden surfaces of the thighs. I show that many species are currently encompassed under this single name, I remove Manthophryne neuhaussi from synonymy, and I describe four new species, three of which have long been in museum collections, and one of which is newly collected by me. Each of these new species is most readily distinguished by their unique color patterns, but additional morphological features-primarily morphometric-also serve to distinguish among them. Despite this partition of C. doriae, additional museum specimens cannot be assigned to any of the species treated here and certainly represent unrecognized species. But the poor states of preservation of some of these and the absence of color-pattern information in life preclude describing them until new material of each is available. Three of the six species treated herein, which occur in the southern portion of the Papuan Peninsula, were previously included in a molecular phylogeny, and inferred dates of divergence for them accord well with the geological dynamism of this region created by opening of the Woodlark Rift. In two cases, pairs of species are reported in general sympatry, and elevational data suggest that these species are likely to segregate elevationally where their ranges approach each other. At least four of the species treated herein are known to produce viscous glandular secretions that presumably deter predators, and I describe the defensive display of one of these, which I presume is aposematic.


Assuntos
Anuros , Simpatria , Animais , Cor , Museus , Filogenia
8.
Zootaxa ; 4612(1): zootaxa.4612.1.11, 2019 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-31717086

RESUMO

The Kokarit Frog, recently referred to as Hylarana lateralis (Boulenger), is widely distributed throughout Indochina (Cambodia, Laos, Vietnam), Thailand, Myanmar and southern China. The position of this species in ranid systematics remains unclear; accordingly to the latest revision by Oliver et al. (2015), it was formally withdrawn from the genus Hylarana, but not assigned to any other hylaranine genus and currently is referred to as "Hylarana" lateralis (Frost 2019).


Assuntos
Anuros , Ranidae , Animais , Camboja , China , Indochina , Laos , Larva , Mianmar , Tailândia , Vietnã
9.
Zootaxa ; 4609(3): zootaxa.4609.3.4, 2019 May 24.
Artigo em Inglês | MEDLINE | ID: mdl-31717094

RESUMO

New Guinea is home to the world's most diverse insular frog biota, but only a small number of taxa have been included in genetically informed assessments of species diversity. Here we describe two new species of New Guinea treefrog in the genus Litoria that were first flagged during assessments of genetic diversity (DNA barcoding) and are currently only known from the holotypes. Litoria pterodactyla sp. nov. is a large green species in the Litoria graminea species complex from hill forests in Western Province, Papua New Guinea and is the third member of this group known from south of the Central Cordillera. Litoria vivissimia sp. nov. is a small, spike-nosed species from mid-montane forests on the Central Cordillera. It is morphologically very similar to Litoria pronimia, but occurs nearly 1000 m higher than any known locality for that species. More extensive genetically informed assessment of diversity in New Guinea frogs seems certain to reveal many more as-yet-unrecognised taxa in complexes of morphologically similar species.


Assuntos
Anuros , Código de Barras de DNA Taxonômico , Animais , Cor , Nova Guiné , Papua Nova Guiné
10.
Zootaxa ; 4609(3): zootaxa.4609.3.8, 2019 May 24.
Artigo em Inglês | MEDLINE | ID: mdl-31717098

RESUMO

Mountain chains and rivers are often found to represent barriers promoting vicariant differentiation in terrestrial vertebrates. Previous studies have supported the idea that the Cordillera de Mérida (CM), the easternmost branch of the Northern Andes, represents a geographic barrier for vertebrates, including frogs. Previous studies have also suggested that the Orinoco River (OR), the biggest river in Venezuela, also represents a geographic barrier for terrestrial vertebrates. Boana pugnax and B. xerophylla are two Neotropical hylids, members of the B. faber species group, that are distributed on either side of the CM, and whose ranges extend up to 605 and 2450 m in elevation, respectively. In addition, B. xerophylla occurs on either side of the OR. Herein, we assess the genetic, acoustic, and morphological differentiation within B. pugnax and within B. xerophylla across the CM and within B. xerophylla across the OR, and test if genetic differentiation is correlated with geographic distance. We also evaluated the acoustic differentiation between the recently recognized B. xerophylla and its sister species, B. crepitans, and found marked differences between advertisement calls, corroborating their status as distinct species. Genetic and morphometric analyses of populations from opposite sides of the CM revealed differentiation in B. pugnax but not in B. xerophylla. Within the latter species, we found molecular, acoustic, and morphometric differentiation among samples of B. xerophylla from western Venezuela versus the Guiana Shield. Genetic variation within B. pugnax and within B. xerophylla was not explained by geographic distance. Thus, our data show conspecific population structure across the CM in B. pugnax, plus the possible existence of two species within what today is considered B. xerophylla, yet the CM apparently is not involved in this divergence. These results suggest that even for closely related species with shared ecology and distribution, genetic and phenotypic differentiation respond differently to common ecological or historical factors.


Assuntos
Anuros , Deriva Genética , Acústica , Animais , DNA Mitocondrial , Variação Genética , Filogenia , Filogeografia , Rios , Venezuela
11.
Zootaxa ; 4609(2): zootaxa.4609.2.2, 2019 May 23.
Artigo em Inglês | MEDLINE | ID: mdl-31717105

RESUMO

Tomopterna branchi sp. nov. is described from Namaqualand, South Africa. It differs from all other Tomopterna species by advertisement call, 16S rRNA sequence and consistent differences in adult morphology. The tadpole is similar to that of Tomopterna cryptotis. Haplotype networks of 16S and the nuclear tyr gene show that it is distinct from T. delalandii, with which it has been confused. A phylogeny of the genus, excluding the little-known T. monticola, shows that the new species is basal to a clade that includes T. delalandii and six other species. We extend the known range of T. damarensis to southern Namibia, and correct the identification of some GenBank material.


Assuntos
Anuros , Animais , Namíbia , Filogenia , RNA Ribossômico 16S , África do Sul
12.
Zootaxa ; 4609(2): zootaxa.4609.2.3, 2019 May 23.
Artigo em Inglês | MEDLINE | ID: mdl-31717106

RESUMO

Amolops shuichengicus sp. nov., a new species of the A. mantzorum group is described from Guizhou, southwest China, on the basis of significant molecular divergences in 16S + CO1 genes and the combination of morphological characteristics: small body size, SVL 34.6-39.6 mm in adult males and 48.5-55.5 mm in adult females; dorsal skin relatively smooth; presence of vomerine teeth; presence of cream maxillary gland from lower edge of eye to the anterior of supratympanic fold; presence of supratympanic folds and glandular dorsolateral folds; tympanum indistinct; absence of a circummarginal groove on the disk of the first finger; presence of supernumerary tubercles below the base of fingers III and IV; absence of outer metatarsal tubercle and tarsal glands; males without vocal sacs. In addition, evidenced by the phylogenetic analyses in this study and literature data, we suggest that A. liangshanensis should be synonymized with A. loloensis and the records of A. marmoratus in Yunnan, China should be referred to A. afghanus. Following our proposal, the genus Amolops contains 57 species, with 32 recorded from China.


Assuntos
Anuros , Ranidae , Animais , Tamanho Corporal , China , Feminino , Masculino , Filogenia
13.
Zootaxa ; 4609(2): zootaxa.4609.2.4, 2019 May 23.
Artigo em Inglês | MEDLINE | ID: mdl-31717107

RESUMO

A new dink frog (Eleutherodactylidae: Diasporus) is described from the Tropical Wet Forest, in the northeastern foothills of Cordillera de Talamanca in Costa Rica at an elevation of ca. 1000 m. Analysis of DNA sequences of the 16S rRNA (16S) and cytochrome oxidase 1 (COI) mitochondrial genes revealed a distinct lineage within the genus Diasporus. Additional morphological, morphometric, and acoustic analyses support the differences of this lineage, which we recognize as a new species. This new taxon is distinguished from other members of the genus Diasporus inhabiting Isthmian Central America by its unique coloration: dorsum brown to brown-grayish and venter gray-bluish with pale blotches. The new species is distinguished from other members of the genus Diasporus by very significant genetic distances (higher than 5.6 % in 16S and 16.7 % in COI). The new taxon is most closely related to D. vocator from the south pacific of Costa Rica and to an unnamed taxon from western Panama.


Assuntos
Anuros , Animais , Região do Caribe , América Central , Costa Rica , Panamá , Filogenia , RNA Ribossômico 16S
14.
Zootaxa ; 4608(1): zootaxa.4608.1.11, 2019 May 17.
Artigo em Inglês | MEDLINE | ID: mdl-31717168

RESUMO

The Neotropical genus Allobates Zimmerman Zimmerman (1988) is a large monophyletic clade composed of 54 described species distributed between Central America and South America (Frost, 2019; Grant et al., 2017). Twelve species have been recorded in Colombia, mostly distributed in the eastern flank of the Eastern Cordillera and Amazonian Region, although some species reach the Magdalena Valley and the Central and Western Cordillera (Acosta-Galvis, 2017).


Assuntos
Anuros , Animais , América Central , Colômbia , América do Sul
15.
Zootaxa ; 4604(2): zootaxa.4604.2.6, 2019 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-31717193

RESUMO

A small number of treefrog species (Litoria) from Melanesia are unusual amongst Anura in having distinctive fleshy rostral spikes. Here, we first present an extended description for Litoria pronimia Menzies, a small species that is widespread along the southern edge of the Central Cordillera of New Guinea, and in which males have a long and erectile rostral spike. Second, we describe Litoria pinocchio sp. nov. a new, morphologically similar, yet geographically disjunct species from the Foja Mountains in northern Papua Province, Indonesia. The new species differs from Litoria pronimia in aspects of body shape, proportions and colouration. A review of variation in the size, structure and degree of sexual dimorphism of the rostral spike across different species of Litoria suggests varying function including mate selection and camouflage.


Assuntos
Anuros , Caracteres Sexuais , Animais , Indonésia , Masculino , Melanesia , Nova Guiné
16.
Zootaxa ; 4695(4): zootaxa.4695.4.1, 2019 Nov 11.
Artigo em Inglês | MEDLINE | ID: mdl-31719339

RESUMO

We describe a new species of Megophryidae frog, Megophrys shunhuangensis sp. nov., from Hunan Province, Southern China. It can be distinguished from other known species in the subgenus Panophrys by morphological characters, bioacoustic data and a molecular divergence in the mitochondrial 16S rRNA gene similar to that found among other species of Panophrys. M. shunhuangensis sp. nov. is characterized by a relatively small body size, with adult females measuring 37.6 mm and adult males measuring 30.3-33.6 mm in snout to vent length; maxillary teeth present, vomerine teeth absent; tongue smooth, not notched behind; hindlimb slender, heels overlapping, tibio-tarsal articulation reaches forward between the nasal and tip of snout. Molecular phylogenetic analyses also show that M. sp. 6 from (Mao'er Shan, China) from Chen et al. (2017) and M. sp. 24 (Anjiangping and Mao'er Shan, China) from Liu et al. (2018) may be the same species as M. shunhuangensis sp. nov., we consequently speculate that the new species also distributed in Anjiangping and Mao'er Shan, China. At present, the genus Megophrys contains 85 species of which 48 species are distributed in China, and 30 belong to the subgenus Panophrys.


Assuntos
Anuros , Genes Mitocondriais , Animais , Anuros/genética , China , Feminino , Masculino , Filogenia , RNA Ribossômico 16S
17.
Zootaxa ; 4691(5): zootaxa.4691.5.6, 2019 Nov 04.
Artigo em Inglês | MEDLINE | ID: mdl-31719380

RESUMO

A new species of frog belonging to the genus Polypedates Tschudi is described from the state of West Bengal, Eastern India. A mid-sized frog, SVL ranges from 47.9-53.6 mm in males and 72.0 mm in the single female. The species is diagnosable in showing the following suite of characters: digits lack webbing, inner and outer metacarpal tubercles present; no dermal fold on forearm; toes webbed, webbing formula I1-1 II0.5-2III1-2IV2-0.5V; an inner metatarsal tubercle present; tibio-tarsal articulation reaches between eye and nostril; and skin on forehead co-ossified to cranium. Additionally, males possess paired vocal sacs. The new species is compared with known species of the genus Polypedates.


Assuntos
Anuros , Internet , Animais , Feminino , Índia , Masculino , Filogenia
18.
Zootaxa ; 4691(5): zootaxa.4691.5.7, 2019 Nov 04.
Artigo em Inglês | MEDLINE | ID: mdl-31719381

RESUMO

We used an integrative taxonomy approach to investigate the taxonomic identity of several populations of glassfrogs from Peru, which are notoriously challenging to identify due to their overall similarity in morphology and coloration. We relied on comparisons of morphology, bioacoustics, and partial fragments of 16S rRNA DNA sequences. We report for the first time the presence of Hyalinobatrachium mondolfii in Peru, being this the southernmost locality known for the species. Likewise, we update and extend the distribution ranges of Rulyrana spiculata and Cochranella nola in the Andes of Peru, provide a 16S sequence of a topotype of R. spiculata, and confirm its presence in Bolivia. For all three species, we increase the current knowledge on their geographic distribution and genetic and phenotypic variation.


Assuntos
Anuros , Animais , Bolívia , Peru , Filogenia , RNA Ribossômico 16S
19.
Zootaxa ; 4688(4): zootaxa.4688.4.6, 2019 Oct 24.
Artigo em Inglês | MEDLINE | ID: mdl-31719429

RESUMO

Deckert described a Tomopterna as Arthroleptella ahli from South Africa in 1938. We demonstrate that the type of Tomopterna ahli (Deckert, 1938) was actually collected in Namibia, and that this nomen is a senior synonym of Tomopterna damarensis Dawood Channing, 2002. We designate a neotype for Tomopterna ahli (Deckert, 1938).


Assuntos
Anuros , Animais , Namíbia , Filogenia , África do Sul
20.
Zootaxa ; 4629(1): zootaxa.4629.1.11, 2019 Jul 04.
Artigo em Inglês | MEDLINE | ID: mdl-31712540

RESUMO

The neotropical genus Physalaemus Fitzinger is currently composed by 48 species (Cardozo Pereyra 2018). Recently, a phylogenetic analysis aiming to investigate the internal relationships of the genus recovered two major clades, the Physalaemus cuvieri and P. signifer clades (Lourenço et al. 2015). The following species groups were retrieved in the first clade: P. biligonigerus, P. cuvieri, P. gracilis, P. henselii, and P. olfersii groups (Lourenço et al. 2015). This proposal redefined the P. olfersii group including P. olfersii (Lichtenstein Martens), P. soaresi Izecksohn, P. maximus Feio, Pombal, Caramaschi, P. feioi Cassini, Cruz, Caramaschi and P. lateristriga (Steindachner). The authors also allocated tentatively P. orophilus Cassini, Cruz, Caramaschi, and P. insperatus Cruz, Cassini, Caramaschi in the P. olfersii group due to their morphological similarity with the other species (Cruz et al. 2008; Cassini et al. 2010). Otherwise, Physalaemus aguirrei Bokermann was not recovered nested within this group, contradicting what was suggested in a previous phenetic analysis (Nascimento et al. 2005). Members of the P. olfersii group inhabit the Atlantic rainforest and most of them have a similar advertisement calls with pulsed notes, without frequency modulation and harmonic structure (Giaretta et al. 2009; Cassini et al. 2010; Lourenço et al. 2015). Regarding their larval stage, only P. soaresi, P. maximus, and P. olfersii have their tadpoles described (Weber et al. 2005; Baêta et al. 2007; Giaretta et al. 2009). Physalaemus orophilus occurs in montane Atlantic Forest sites at the eastern slope of the Espinhaço Range in the State of Minas Gerais, southeastern Brazil (Cassini et al. 2010). Herein, we describe the tadpole of P. orophilus from Quadrilátero Ferrífero mountain region, southern limit of the Espinhaço Range and compared it to the known tadpoles of the P. olfersii group.


Assuntos
Anuros , Floresta Úmida , Animais , Brasil , Larva , Filogenia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA