Amphibians and reptiles from Lawachara National Park in Bangladesh (original) (raw)
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Hamadryad, 2009
We present here details of a collection of herpetofauna from Bangladesh, held at the Jahangirnagar University Herpetological Group, Dhaka. This collection is comprised of at least 58 species, six are tentatively identified to their nearest described species which themselves are recognised to consist of more than one cryptic species. Four species could not be accurately identified to species level. It is likely that some of these ten "species" represent cryptic species and possibly undescribed taxa. Several of the localities presented here provide the first confirmed localities for species previously listed as present in Bangladesh, but were not confirmed with locality or specimen data. Other species in the collection represent previously unknown localities, e.g., Euphlyctis hexadactylus, Uperodon globulosus and Cyrtodactylus sp. Eutropis multifasciata, and Hylarana cf. nigrovittata, are here recorded from Bangladesh for the first time based on our collections and Takydromus khasiensis is also reported for the first time from Bangladesh based on apparently unpublished specimens in the collection of the California Academy of Science.
A rapid survey of herpetofaunal diversity in Nijhum Dwip National Park, Bangladesh
Reptiles & Amphibians
The ecological effects of habitat use by herpetofaunal species vary widely and recognizing relative habitat value will help to improve conservation theory and practice in a particular landscape. To understand how different habitat uses influence diversity in riparian landscapes, we studied reptile and amphibian assemblages across major habitats (agricultural land, forest, human habitation, and waterbodies) in Nijhum Dwip National Park, Bangladesh. A total of 35 herpetofaunal species were found; among them, 17 were directly observed and 18 were reported from a questionnaire survey. Among the observed species, the Asian Common Toad Duttaphrynus melanostictus was the most commonly seen (relative abundance 0.32). We found that forest habitat contained a greater diversity of herpetofauna than other habitats followed by agricultural land, human habitation, and waterbodies. We also found 8 habitat specialist species and 9 generalist species in this study. Our results show that different ha...
Hamadryad. 32 (1):45–56. , 2008
A herpetofaunal survey was conducted at a relatively disturbed area in Milonchari, central Chittagong Hill Tracts. A total of 24 species (11 frog, nine lizard and four snake species) from 21 different genera, were documented. Of these, at least two lizard species are new records for Bangladesh. One of these, Lygosoma lineolatum, was previously considered a Myanmar endemic. The second species, Hemidactylus garnotii, is widely distributed in south-east Asia and north-east India. Of the remaining species, three (Calotes cf. versicolor, Microhyla cf. berdmorei and Xenophrys cf. parva) have been tentatively assigned to their closest described relatives which themselves are species complexes. Most species found during this study are of south-east Asian affinities, and all but two-Microhyla cf. berdmorei and Cyrtodactylus sp.-are considered primarily associated with anthropogenically modified habitats.
Conservation of amphibians relies on the knowledge of the diversity and distribution patterns. To date, there is a lack of information on the diversity and distribution patterns of amphibians in some regions of Bangladesh, particularly the Northwest and Central areas. Thus, to contribute to the present knowledge on amphibians of Bangladesh, we surveyed nine districts from the Northwest and Central regions of Bangladesh between 2017 and 2019 and evaluated the patterns of species richness and habitat preference. Furthermore, we compiled a list of the amphibian species for Bangladesh and summarized the conservation status. The results revealed the presence of 19 amphibian species from the Northwest and Central regions, with range extensions for five species. Diversity analyses showed that the agricultural field had the highest number of species. An updated inventory of the amphibians of Bangladesh shows the presence of at least 62 species belonging to two orders, eight families, and 34 genera. Of the amphibians in Bangladesh, 26.0% are placed under International Union for Conservation of Nature (IUCN)threatened category, 43.0% least concern, 8.0% data deficient, and 23.0% are not accessed by the IUCN. Our study improved knowledge on the diversity and distribution of amphibians in Bangladesh as well as offered recommendations for improved conservation policies.
Recent research, aspects and conservation strategy towards amphibians of Bangladesh
The present review described the research trends and conservation issues on amphibians of Bangladesh based on recent published research works. We found twenty amphibian species (11 dicroglossids, 5 microhylids, 2 ranids, 1 rhacophorid and 1 bufonid) from Bangladesh have morphometric data. These researches involved taxonomy, reproduction biology, cryptic diversity and other natural history gives superficial scenario in amphibian conservation. Most research has been conducted in southeastern and northeastern Bangladesh describe ecological implications and threat due to anthropogenic activities and habitats destructions. Morphological and molecular investigations have resulted in the description of six new species i.e., Minervarya asmati, Microhyla mukhlesuri, Microhyla mymensighensis, Minervarya dhaka, Euphlyctis kalasgramensis, Microhyla nilphamariensis recently. Here genus Zakerana was erected for several South Asian species that previously assigned to Fejervarya, but later into the Minervarya. Bio-acoustic analyses are largely wanting but some cross-breeding experiments exist for Hoplobatrachus spp. A large number of amphibian species have been recognized by some morphometric assessments. Amphibian deformity has been reported from Bangladesh, and this serves as a warning and new challenge for survival in the near future. Relative to other countries, Bangladesh has received little attention on amphibians. Accordingly, many important species may be lost before their discovery. In this paper we proposed the diverse amphibian fauna that occupies habitats ranging from the northern and eastern hills to mangrove Sundarbans forests in the southwest and to the southern Bay of Bengal need proper survey and conservation.
An annotated checklist of the herpetofauna of beris valley, kedah, malaysia
Tropical life sciences research, 2011
The herpetofauna of Beris Valley, Kedah, Malaysia, was studied using a rapid assessment survey during a scientific expedition organised by the School of Biological Sciences at the Universiti Sains Malaysia, from 14-17 August 2009. All amphibians and reptiles were observed and captured during the four-day survey along the ditches, roads, dam areas, swamps, forest trails and streams. The results showed that 14 species of amphibians from 9 genera and 5 families inhabit the area, and 7 species of lizards, 5 species of snakes and 2 species of freshwater turtles were also present in the area. Fejervarya limnocharis and Microhyla butleri seemed to be the most common amphibians, while Hemidactylus frenatus and Varanus salvator were the most common reptiles in the area. This report constitutes a preliminary checklist and first record of amphibians and reptiles in Beris Valley, Kedah. The number of specimens was less than expected because of the very short survey period, but we hope to record...
Four New Herpetofaunal Records from Saint Martin's Island, Cox's Bazar, Bangladesh
We conducted a herpetofaunal survey of St. Martin’s Island and recorded 11 species including four new records (three frogs and one skink. We documented the presence of 11 species, including four that had not been previously reported from the island. Thelatter (three anurans in the family Dicroglossidae and one skink in the family Mabuyidae)are described here.
Herpetofauna of Beris Valley, Kedah, Malaysia
The herpetofauna of Beris Valley, Kedah, Malaysia, was studied using a rapid assessment survey during a scientific expedition organised by the School of Biological Sciences at the Universiti Sains Malaysia, from 14–17 August 2009. All amphibians and reptiles were observed and captured during the four-day survey along the ditches, roads, dam areas, swamps, forest trails and streams. The results showed that 14 species of amphibians from 9 genera and 5 families inhabit the area, and 7 species of lizards, 5 species of snakes and 2 species of freshwater turtles were also present in the area. Fejervarya limnocharis and Microhyla butleri seemed to be the most common amphibians, while Hemidactylus frenatus and Varanus salvator were the most common reptiles in the area. This report constitutes a preliminary checklist and first record of amphibians and reptiles in Beris Valley, Kedah. The number of specimens was less than expected because of the very short survey period, but we hope to record more species in future studies. Keywords: Beris Valley
Diversity and abundance of herpetofauna are an integral part of a healthy ecological food web and indicators of environmental changes. Hence a study was conducted in Dantan I, Paschim Medinipur, West Bengal, India, from January 2020 to January 2021, with an aim to determine the diversity and prepare a checklist of herpetofauna in this area. There is hardly any comprehensive work on herpetofauna in this region. The present study provides baseline information about herpetofauna diversity in this area. A total 34 species of Herpetofauna were observed. These included 23 species of reptiles from 2 order (Squamata and Testudineus) and 8 families, represented by 14 snakes species (4 venomous and 10 nonvenomous), 1 turtle and 8 lizards. Amphibians were represented by 11 species under order (Anura), 5 families have been included in this first-ever comprehensive checklist from the area. Such studies are essential from time to time to monitor the increasing impact of anthropogenic global environmental changes and frame policies accordingly to safeguard these precious organisms and prevent biodiversity degradation.
Amphibian species assemblages in a tropical forest of Bangladesh
Herpetological Journal, 2017
Tropical forests are considered one of the most important biogeographic zones for amphibian species diversity. As a tropical country in Asia, Bangladesh implements different types of forest management practices in its forests, which might affect prevailing forest quality in the existing forest types. The current state of information on the impact of habitat alteration on amphibian species assemblages in Bangladesh is inadequate. To evaluate this, we conducted a study in Khadimnagar National Park (KNP) in north-eastern Bangladesh. We used a combination of several common amphibian study techniques in 15 pre-marked transects covering three major habitat types in KNP: forest edge, forest interior and swamp area. Twelve anuran species belonging to eleven genera and six families were recorded during the study period. Euphlyctis cyanophlyctis was the most abundant species, representing 51.7% of the recorded individuals, followed by Fejervarya spp. (18.9%); the remaining 10 species altogeth...