scholarly journals On On the distribution of three exotic geckos of genus Hemidactylus Gray, 1825 (Squamata, Gekkonidae), and an unusual record of the native lizard Gymnophthalmus speciosus (Hallowell, 1861) outside its elevational range in Colombia

2021 ◽  
Author(s):  
Jose J. Henao-Osorio ◽  
Ana M. Pereira-Ramírez ◽  
Alexandra Cardona-Giraldo ◽  
Héctor Fabio Arias-Monsalve ◽  
Julián A. Rojas-Morales ◽  
...  
Keyword(s):  
Amazon Basin ◽  
Distribution Area ◽  
Historical Records ◽  
Limited Information ◽  
Local Diversity ◽  
Reptile Species ◽  
New Localities ◽  
Elevational Range ◽  
Human Transport ◽  
Hemidactylus Frenatus

The study of the introduction of exotic species in Colombia has been a trending topic in the last decade due to their effects on local diversity. The records of exotic reptile species of the genus Hemidactylus have increased based on museum vouchers and fieldwork. However, there are still plenty of information gaps regarding their current distribution in the country. Similarly, there is limited information on unusual reptile distributions caused by human transport inside the country. Here, we present an update to the distribution of the exotic house geckos Hemidactylus frenatus, H. garnotii, and H. mabouia based on several new localities and historical records. We also present an atypical record of the golden spectacled tegu Gymnophthalmus speciosus in paramo ecosystems from the Central Andes of Colombia, almost 2000 meters above the upper elevational known limit for this species. The distribution update shows that H. frenatus is widely distributed in 30 of the 32 departments of Colombia with no records for Chocó and Guainía. H. garnotii is currently known only from the Cauca River basin of the departments of Antioquia, Caldas, and Risaralda, while H. mabouia, previously known from the Amazon basin of the country, is now reported for the Andean region. Finally, Gymnophthalmus speciosus presence in a paramo ecosystem, considered unusual as it is not part of its distribution area, was probably the result of an accidental transport from a typical lowland locality (below 1000 meters above sea level. 

Distribution of the southern brown bandicoot (Isoodon obesulus) in the Portland region of south-western Victoria

2000 ◽  
Vol 27 (5) ◽  
pp. 539 ◽  
Author(s):  
Michael Rees ◽  
David Paull
Keyword(s):  
Local Population ◽  
Historical Records ◽  
Limited Information ◽  
Field Surveys ◽  
Potential Habitat ◽  
Specimen Collection ◽  
Eastern Australia ◽  
Spatial Isolation ◽  
Observational Bias ◽  
Western Victoria

The southern brown bandicoot (Isoodon obesulus) occurs across the periphery of southern and eastern Australia as a series of isolated regional populations. Historical records and recent surveys conducted for I. obesulus indicate that it has disappeared or decreased significantly from many parts of its former range. Vegetation clearance, habitat fragmentation, feral predators and fire have all been implicated in the decline of the species. This paper examines the distribution of I. obesulus in the Portland region of south-western Victoria. Historical records of I. obesulus were compiled from the specimen collection of Museum Victoria, the Atlas of Victorian Wildlife, Portland Field Naturalists’ Club records and anecdotal sources. Field surveys were conducted to determine the current distribution of I. obesulus in the study area based on evidence of its foraging activity. The historical records reveal limited information: most are clustered around centres of human activity, indicating observational bias. The field surveys demonstrate that I. obesulus occurs in the Portland region as a series of local populations. Each local population is associated with a patch of remnant native vegetation separated from neighbouring patches by dispersal barriers. Within these habitat remnants the occurrence of the species is sporadic. Approximately 69% of the potential habitat is managed by the Forests Service, 31% is managed by Parks Victoria, and less than 0.5% is held under other tenures. Spatial isolation of habitat remnants, fires and feral predators are the main threats to I. obesulus in the Portland region.

scholarly journals RESURRECTED RECORDS

2016 ◽  
pp. 19-22
Author(s):  
Bradley E. Carlson ◽  
William S. Parker
Keyword(s):  
Chrysemys Picta ◽  
Montgomery County ◽  
Historical Records ◽  
Terrapene Carolina ◽  
Reptile Species ◽  
Apalone Spinifera ◽  
Sternotherus Odoratus ◽  
Terrapene Carolina Carolina ◽  
First Time ◽  
Species Occurrences

Current and historic records of species occurrences in particular localities enable researchers to monitor changes in species distribution and abundance. While current fauna can be documented with sufficient effort, missing historical records represent data that can never again be obtained. It is with this importance in mind that we report for the first time records of eight reptile species in Montgomery County, Indiana, USA, that were documented in 1964, though no vouchered specimens persist. These species include: Sternotherus odoratus, Terrapene carolina carolina, Chrysemys picta marginata, Apalone spinifera spinifera, Thamnophis sauritus sauritus, Storeria dekayi wrightorum, Lampropeltis calligaster, Lampropeltis triangulum. We also provide a list of the 23 currently documented reptile species that occur (or have occurred recently) in Montgomery County.

scholarly journals Aves, Apodiformes, Trochilidae, Topaza pella (Linnaeus, 1758): a range reinforcement in Amazonian Brazil

Check List ◽  
2010 ◽  
Vol 6 (3) ◽  
pp. 397 ◽  
Author(s):  
Bradley J. W. Davis ◽  
Scott T. Olmstead
Keyword(s):  
Amazon Basin ◽  
Brazilian Amazon ◽  
Amazon River ◽  
Suitable Habitat ◽  
Mato Grosso ◽  
New Localities ◽  
Amazonian Brazil ◽  
New Distribution

We present new distribution records for Topaza pella (Linnaeus, 1758) in the southern reaches of the Amazon Basin in Brazil. The two new localities presented for the species elucidate its range in southern Pará and northern Mato Grosso states, and in consideration of recent records elsewhere south of the Amazon River, suggest that the species is widely distributed across suitable habitat throughout the Brazilian Amazon.

scholarly journals Mapping co-benefits for carbon storage and biodiversity to inform conservation policy and action

2020 ◽  
Vol 375 (1794) ◽  
pp. 20190128 ◽  
Author(s):  
C. Soto-Navarro ◽  
C. Ravilious ◽  
A. Arnell ◽  
X. de Lamo ◽  
M. Harfoot ◽  
...  
Keyword(s):  
Climate Change ◽  
High Resolution ◽  
Amazon Basin ◽  
Global Climate ◽  
Central Africa ◽  
Integrated Approach ◽  
Tropical Andes ◽  
Biological Communities ◽  
Local Diversity ◽  
Degraded Ecosystems

Integrated high-resolution maps of carbon stocks and biodiversity that identify areas of potential co-benefits for climate change mitigation and biodiversity conservation can help facilitate the implementation of global climate and biodiversity commitments at local levels. However, the multi-dimensional nature of biodiversity presents a major challenge for understanding, mapping and communicating where and how biodiversity benefits coincide with climate benefits. A new integrated approach to biodiversity is therefore needed. Here, we (a) present a new high-resolution map of global above- and below-ground carbon stored in biomass and soil, (b) quantify biodiversity values using two complementary indices (BIp and BIr) representing proactive and reactive approaches to conservation, and (c) examine patterns of carbon–biodiversity overlap by identifying 'hotspots' (20% highest values for both aspects). Our indices integrate local diversity and ecosystem intactness, as well as regional ecosystem intactness across the broader area supporting a similar natural assemblage of species to the location of interest. The western Amazon Basin, Central Africa and Southeast Asia capture the last strongholds of highest local biodiversity and ecosystem intactness worldwide, while the last refuges for unique biological communities whose habitats have been greatly reduced are mostly found in the tropical Andes and central Sundaland. There is 38 and 5% overlap in carbon and biodiversity hotspots, for proactive and reactive conservation, respectively. Alarmingly, only around 12 and 21% of these proactive and reactive hotspot areas, respectively, are formally protected. This highlights that a coupled approach is urgently needed to help achieve both climate and biodiversity global targets. This would involve (1) restoring and conserving unprotected, degraded ecosystems, particularly in the Neotropics and Indomalaya, and (2) retaining the remaining strongholds of intactness. This article is part of the theme issue ‘Climate change and ecosystems: threats, opportunities and solutions’.

scholarly journals Updating the distribution of Vampyrum spectrum (Chiroptera, Phyllostomidae) in Colombia: new localities, potential distribution and notes on its conservation

2020 ◽  
Vol 15 (4) ◽  
pp. 689-709
Author(s):  
Diego A. Esquivel ◽  
Carlos Aya-Cuero ◽  
Angie P. Penagos ◽  
Julio Chacón-Pacheco ◽  
Carlos J. Agámez-López ◽  
...  
Keyword(s):  
Potential Distribution ◽  
Mean Value ◽  
Dry Forest ◽  
Conservation Strategies ◽  
Niche Modelling ◽  
Morphometric Variation ◽  
Biogeographic Provinces ◽  
New Localities ◽  
Forested Areas ◽  
Elevational Range

The Spectral Bat (Vampyrum spectrum) is classified as Near Threatened by the International Union for Conservation of Nature. In Colombia, it has not been included in any risk assessments, because it is a poorly documented species in the country. Using new occurrence data and ecological niche modelling we evaluate the distribution and analyze the species’ ecological and conservation needs in Colombia. With the new records, V. spectrum shows a distribution over six biogeographic provinces in the country, along an elevational range between 96 and 1750 m. The Spectral Bat has been reported in a wide variety of ecosystems from dry forest and fragmented landscapes, to forested areas. Predictive models suggest a wider presence of this species in the west of the country, center, and southern Andes. The limited number of specimens limits our attempt to evaluate morphometric variation among Colombian populations; however, we detect a variation in the mean value of the forearm and ear length regarding northeast South American populations. Areas with the greatest potential distribution detected in this study could be prioritized in conservation strategies, and make plans accordingly for this and other species that coexist in its range. Finally, we highlight the low representativeness of Protected Areas for the Spectral Bat and add some ecological notes about this rare species.

scholarly journals Species richness of squamate reptiles from two islands in the Mexican Pacific

Check List ◽  
2014 ◽  
Vol 10 (6) ◽  
pp. 1264
Author(s):  
Uriel Hernández-Salinas ◽  
Aurelio Ramírez-Bautista ◽  
Vicente Mata-Silva
Keyword(s):  
Species Richness ◽  
Dominant Species ◽  
Island Ecosystems ◽  
Ecological Disturbance ◽  
Mexican Pacific ◽  
Squamate Reptiles ◽  
Island Species ◽  
Boa Constrictor ◽  
Reptile Species ◽  
Hemidactylus Frenatus

Cocinas and San Pancho Islands, located in the Bay of Chamela, Jalisco, México, are two of the few remaining island ecosystems with little ecological disturbance. We studied both islands aiming to assess their reptile richness. Because the environment in Chamela is seasonal, we conducted biodiversity surveys during six samplings: three in the dry season and three in rainy season. We found a total of seven reptile species on Cocinas and San Pancho Islands representing the first description of their herpetofauna. We recorded four species (Aspidoscelis lineattissima, Hemidactylus frenatus, Iguana iguana, and Urosaurus bicarinatus) on Cocinas Island, and six species (A. lineattissima, Phyllodactylus lanei, H. frenatus, Anolis nebulosus, Urosaurus bicarinatus, and Boa constrictor) on San Pancho Island. Species richness in Cocinas showed a higher evenness than in San Pancho Island. Finally, A. lineattissima and A. nebulosus were the dominant species on Cocinas and San Pancho Islands, respectively.

scholarly journals Amphibians and reptiles of Wildsumaco Wildlife Sanctuary, Napo Province, Ecuador

Check List ◽  
2021 ◽  
Vol 17 (3) ◽  
pp. 729-751
Author(s):  
Jeffrey D. Camper ◽  
Omar Torres-Carvajal ◽  
Santiago R. Ron ◽  
Jonas Nilsson ◽  
Alejandro Arteaga ◽  
...  
Keyword(s):  
Secondary Forest ◽  
Iucn Red List ◽  
Primary Forest ◽  
Wildlife Sanctuary ◽  
Amphibian Species ◽  
Diverse Species ◽  
Transect Sampling ◽  
Reptile Species ◽  
Elevational Range

We conducted a long-term inventory of the herpetofauna of Wildsumaco Wildlife Sanctuary in the eastern part of the Napo Province in Ecuador. This private preserve is about 500 ha in size and is located on the southern slopes of Volcán Sumaco. The preserve contains primary forest, secondary forest, and pasture habitats. Based mostly on nocturnal transect sampling we documented 39 species of amphibians including one species of salamander, two species of caecilians, and 36 species of frogs. Rain frogs (Pristimantis Jiminez de la Espada, 1871) were diverse with 14 species documented. A diverse species assemblage of 45 reptile species was also documented on the preserve. Six amphibian species found were listed by the IUCN Red List. At least three species exhibited substantial geographic range extensions and seven species showed elevational range extensions. We discovered several undescribed species including one salamander, three frogs, one lizard, and one snake.

scholarly journals Distribution and status of giant otter (Pteronura brasiliensis) in the Pantanal wetland, Brazil

2015 ◽  
Vol 10 (2) ◽  
pp. 107-114 ◽  
Author(s):  
Walfrido M. Tomas ◽  
André R. Camilo ◽  
Carolina Ribas ◽  
Caroline Leuchtenberger ◽  
Paulo André Lima Borges ◽  
...  
Keyword(s):  
Amazon Basin ◽  
Conservation Status ◽  
Limited Information ◽  
River Bed ◽  
River Stretch ◽  
Remarkable Recovery ◽  
Pteronura Brasiliensis ◽  
The 1960S ◽  
The Many ◽  
Pantanal Wetland

The giant otter (Pteronura brasiliensis) is listed as vulnerable in Brazil, is included in Appendix I of CITES and is classified as endangered by the IUCN. In Brazil, few viable populations persist outside the Amazon basin and the Pantanal wetland. Furthermore, there is limited information on the distribution and abundance of the existing populations. The aim of this study was to estimate the abundance of giant otters in the Pantanal wetland and to discuss the conservation status of this population. From July 2000 to November 2011 we conducted surveys throughout the Pantanal to detect the occurrence of giant otters by the observations of active dens and latrines and the direct visualization of the otters. We also monitored giant otter population in five rivers, which allowed us to obtain information on number of individuals, group size and linear density. The species was found to occur in almost every river stretch within the Pantanal wetland, as well as in several aquatic habitat types, indicating a remarkable recovery since the over-hunting during the 1960s. The population of giant otter in the Pantanal may reach 3969 (SD = 1103) individuals, based on our estimated number of individual per kilometer of rivers and creeks (0.54 ± 0.15), over a total of about 7350km of rivers and secondary channels occurring in the Pantanal. These results indicate that the Pantanal is an important area to preserve the giant otter and its habitat, despite the many threats that the species still faces in the region, such as increased vessel traffic, pollution and siltation, as well as disruption of the hydrological characteristics due to the construction of dams and river-bed sedimentation.

Enteric bacteria of reptiles on java and the krakatau islands

1988 ◽  
Vol 322 (1211) ◽  
pp. 355-361 ◽  
Keyword(s):  
Escherichia Coli ◽  
Enteric Bacteria ◽  
The Other ◽  
Gekko Gecko ◽  
E Coli ◽  
Reptile Species ◽  
Resistance Patterns ◽  
Faecal Bacteria ◽  
Antibiotic Resistance Patterns ◽  
Hemidactylus Frenatus

A small survey of faecal bacteria from six species of reptile on West Java and the Krakatau Islands showed that species of Citrobacter were present in 17 out of 19 individual reptiles sampled. Species of Enterobacter, Klebsiella and Pseudomonas were also common but Escherichia coli was rare (present in only 2 out of 19 individual reptiles). Streptococcus faecalis was not detected in any reptile. Species of Pseudomonas were not detected in the faeces of any of the three gecko species sampled ( Gekko gecko, Gekko monarchus and Hemidactylus frenatus ), although they were detected in samples from the other three reptile species ( Mabuia multifasciata, Chrysopelea paradisi and Varanus salvtor ). Species of Citrobacter and Pseudomonas were more common and E. coli less common in reptiles than in mammals (rats and bats) living in the same area. The antibiotic-resistance patterns of the Citrobacter species were not significantly different between islands of the Krakatau group. Citrobacter species from reptiles were more resistant to chloramphenicol (43 % resistant) than those from mammals (8 % resistant). None of the isolates of Klebsiella and E. coli from reptiles was resistant to tetracycline.

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