With amphibian declines at crisis levels, translocations, including population augmentations, are commonly used for amphibian conservation. Eastern Hellbenders (Cryptobranchus alleganiensis alleganiensis) have declined to low densities in many areas of their range, making them ideal candidates for population augmentation. Both wild adults and captive-reared juveniles have been used for augmentations, but their suitability has never been directly compared. Herein, we use radio telemetry with Eastern Hellbenders to examine patterns of site fidelity, movement, and habitat use over a 2-yr period for adult residents, wild adult translocates, and captive-reared juvenile translocates. We used generalized linear models and generalized linear mixed models to identify temporal trends and explore the effects of residential status (resident vs. translocate) and origin/age (captive-reared juveniles vs. wild adults) on various ecological and behavioral traits relating to habitat. Site fidelity was high in adult residents and wild adult translocates, but lower in captive-reared juvenile translocates. Both adult and juvenile translocates had greater mean movement distances than residents, leading to larger home range sizes, but these differences decreased over time. Wild adult translocates had a higher probability of using artificial nest rocks than adult residents or captive-reared juvenile translocates. This pattern was most prevalent early in the study, indicating these shelters are particularly useful during the transition to release sites. Captive-reared juvenile translocates had lower site fidelity and utilized suboptimal habitat (smaller and fewer shelter rocks) compared to wild adults. Compared to previous studies, translocations had fewer negative effects on site residents or wild translocates and might be effective at promoting growth of Hellbender populations. However, translocations of captive-reared juveniles were less successful. As we are uncertain whether captive-rearing or ontogeny led to these differences, both longer head-starting times and conditioning should be explored to improve outcomes in captive-reared juvenile cohorts.

We present a synthesis of anuran diversity and distribution in the Mantiqueira Mountain Range, one of the largest mountain ranges occurring within the Atlantic Forest biome of Brazil. We assembled a species list based on the examination of 16,893 specimens housed in 10 herpetological collections and data compiled from the literature. We developed minimum convex polygons for each species to determine their degree of association with the mountain range, and assessed distribution patterns considering species presence–absence in nearby geomorphological units. The northern and southern sectors of the mountain range were examined for differences in species composition, accounting for possible effects of the main vegetation types of the range. We recorded 234 anuran species (∼23% of total anuran richness for Brazil), including 143 core species, 89 species of marginal occurrence, and 2 species with an undetermined degree of association because of taxonomic uncertainties. Of these species, 91 were widespread and occur throughout the Atlantic Forest and in other regions, 53 were not widespread but range into neighboring geomorphological units, and 88 were endemic species. The northern and southern sectors of the mountain range differed in species composition, which was influenced by the different vegetation types. Thirty-nine endemic species were restricted to the southern sector, whereas 45 occurred only in the northern sector, indicating that these sectors potentially represent distinct biogeographic units with regard to the anurans. We found 14 species that are listed among the categories of both global and national lists of threatened species and 10 species whose most recent records date from at least 30 yr ago. Our study confirms that the Mantiqueira Range is a critical region for anuran endemism and conservation in the Atlantic Forest, and provides a baseline for future biogeographic, taxonomic, and macroecological studies.

In oviparous reptiles with no parental care, the choice of nest site is a mother's final investment in her offspring. Although linkages between nest site choice, egg temperatures, and embryonic success have been well studied, much less is known about analogous linkages with soil moisture encompassing developing embryos. Most ground-nesting reptiles nest at depths <25 cm, with the deepest nests <1.0 m deep. Recently, however, the nests of two species of monitor lizards (Varanus panoptes and V. gouldii) have been discovered at depths of 2.3-3.0 m, suggesting that nesting at extreme depths in these species is an adaptive response to the lack of sufficient soil moisture at shallower depths. Herein, we examine this idea with V. panoptes, specifically predicting that deeper nests in a desert ecosystem compared with those in a savannah ecosystem are attributable to differences in the magnitude of rainfall. We excavated a communal nesting warren to a depth of 4 m and identified 11 fresh nests and 99 hatched nests. Mean nest depth in the present study was greater than that in savannah. However, nests were shallower than those of V. gouldii in the same general location, possibly because of local heterogeneity in soil moisture. Hatchlings excavated their own emergence burrows rather than following the burrows of their mothers, despite relatively great distances through resistant soils. Collectively, deep nesting creates energetic challenges for mothers and hatchlings, suggesting an adaptive function for the behavior.

Adult males of the African treefrog species Leptopelis flavomaculatus occur in either brown or green color morphs. In this study, we investigated whether the two color morphs of breeding males of L. flavomaculatus differ in traits other than color. We examined call differences (dominant frequencies and call durations), call-site selection, and body size. Our results show differences in the call durations, dominant frequencies, mean call intensities, as well as in size (body length and body mass) of the two vocally active color morphs of this species. The two morphs were similar in their choice of plant species used as calling sites and the heights of those sites. Given the sensitivity of mate recognition systems for most anurans, our results provide evidence of both call and morphological variation between the two color morphs of this species. Our findings establish a foundation for future phylogenetic and mating system studies to support the contention that the two color morphs of L. flavomaculatus might warrant taxonomic recognition as separate species.

We describe the buccopharyngeal morphology of the dendrobatid poison frog Ameerega flavopicta—the first such description for the genus—and discuss diagnostic characters and variation of buccopharyngeal morphology within Dendrobatoidea. We also redescribe the external larval morphology of this species, and compare it with all known tadpoles of the genus. The buccopharyngeal morphology of A. flavopicta most closely resembles that of Hyloxalus species and appears to be the result of convergent evolution. Larval A. flavopicta can be readily distinguished from congeners by the absence of a medial notch in the arch-shaped upper jaw sheaths and the medial interruption of the first posterior tooth row.

We describe a new species of the genus Fritziana, historically identified as Fritziana fissilis or F. aff. fissilis. Using adult and tadpole morphology, as well as molecular analyses, we found the new species to be characterized by having the following traits: a mucronate snout tip, a black stripe on the wrist, round subarticular tubercles on the fingers and toes, a closed dorsal egg–pouch in females, tadpoles deposited in bromeliads, and a different mitochondrial transfer RNA gene order, when compared to the general orders already recognized for anurans. This new species occurs in the Atlantic Forest of Brazil, in the states of São Paulo, Paraná, Santa Catarina, and Rio Grande do Sul, and has the largest geographic distribution recorded for a species of Fritziana.

The tricarinate skink Scincus multifasciatus was described by Kuhl in 1820, without the subsequent designation of a type specimen or specific type locality. In 1930, Mertens assigned the type locality as Java, Indonesia, but still with no type specimen. Therefore, in order to stabilize the name with a recognized type specimen, we designate a neotype for Eutropis multifasciata from western Java, and we accept Merten's type locality assignment. We examined all the available synonym type voucher specimens of E. multifasciata and associated subspecies deposited in museum collections throughout Europe, Indonesia, and India. Examination of the types of E. m. balinensis and E. m. tjendikianensis show nearly identical to the forma typica. Hence, we synonymize both subspecies to E. multifasciata. We compared the holotypes of E. macrophthalma (type locality: Java) and E. grandis (type locality: Sulawesi). Interestingly, the two species are morphologically and genetically nearly identical, and there are no diagnostic characters for their separation. Thus, we synonymize E. grandis with E. macrophthalma. The two type specimens of E. macrophthalma reached Europe from Java, through commercial animal trade, hence their type locality “Java” is suspicious. Eutropis macrophthalma has never been recorded from Java and the two type specimens probably originated in Sulawesi, from which museum vouchered specimens with precise locality are known. We consider E. macrophthalma to be a Sulawesi endemic, and conclude that the recorded type locality, Java, is erroneous.

We describe a new species of Enyalius endemic to the Brazilian Cerrado, based on morphological and molecular data sets. In the face of uncertain taxonomy among museum specimens of Enyalius, we used a novel analytical approach based on Gaussian mixture modeling for species assignments. We also used a machine-learning classification procedure (random forests) to investigate morphological variation and identify species diagnostic characters. Phylogenetic and species delimitation analyses supported the distinction of the new species from its congeners. The new species is characterized by the fewest ventral scales and smallest snout–vent length in the genus. Moreover, we infer that this species diverged from its closest relative, E. bilineatus, in the late Miocene, presumably after colonization of Cerrado gallery forests by an Atlantic Forest ancestor, followed by ecological or geographical speciation linked to shrinkage or fragmentation of gallery forests associated with global cooling and increased aridity. Rapid conversion of natural habitats, the isolation of protected areas, and recent changes to the Brazilian Forest Code pose serious threats to the conservation of the new species described herein, and other gallery forest inhabitants.