Two new cryptic species of the Cyrtodactylus irregularis complex (Squamata: Gekkonidae) from southern Vietnam

Nazarov, Roman A.; Poyarkov, Nikolay A.; Orlov, Nikolai L.; Phung, Trung My; Nguyen, Tao Thien; Hoang, Duc Minh; Ziegler, Thomas

doi:10.11646/zootaxa.3302.1.1

Cited by 41 publications

(76 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Langbian Plateau is known for its high herpetofaunal diversity and endemism, a significant portion of which has been discovered only recently (e.g., Orlov et al 2008, 2012, Rowley et al 2010c, 2011a, 2011b, 2016, Stuart et al 2011, Poyarkov [Paiarkov] and Vassilieva 2011, Nazarov et al 2012, Chan et al 2013, Hartmann et al 2013, Geissler et al 2014, 2015, Vassilieva et al 2014, Poyarkov et al 2014, 2015a, 2015b). Despite this increase in species discoveries, many areas of the Annamites have received little scientific attention and are very likely to host further previously unknown diversity.…”

Section: Discussionmentioning

confidence: 99%

Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species

Poyarkov¹,

Duong²,

Orlov³

et al. 2017

Self Cite

View full text Add to dashboard Cite

Asian Mountain Toads (Ophryophryne) are a poorly known genus of mostly small-sized anurans from southeastern China and Indochina. To shed light on the systematics within this group, the most comprehensive mitochondrial DNA phylogeny for the genus to date is presented, and the taxonomy and biogeography of this group is discussed. Complimented with extensive morphological data (including associated statistical analyses), molecular data indicates that the Langbian Plateau, in the southern Annamite Mountains, Vietnam, is one of the diversity centres of this genus where three often sympatric species of Ophryophryne are found, O. gerti, O. synoria and an undescribed species. To help resolve outstanding taxonomic confusion evident in literature (reviewed herein), an expanded redescription of O. gerti is provided based on the examination of type material, and the distributions of both O. gerti and O. synoria are considerably revised based on new locality records. We provide the first descriptions of male mating calls for all three species, permitting a detailed bioacoustics comparison of the species. We describe the new species from highlands of the northern and eastern Langbian Plateau, and distinguish it from its congeners by a combination of morphological, molecular and acoustic characters. The new species represents one of the smallest known members of the genus Ophryophryne. At present, the new species is known from montane evergreen forest between 700–2200 m a.s.l. We suggest the species should be considered Data Deficient following IUCN’s Red List categories.

show abstract

Section: Discussionmentioning

confidence: 99%

Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species

Poyarkov¹,

Duong²,

Orlov³

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…1, locality 1). This montane area is characterized by high levels of local endemism (Nazarov et al, 2012;Poyarkov et al, 2014;Poyarkov et al, 2015a;Poyarkov et al, 2015b;Poyarkov et al, 2017;Poyarkov et al, 2019b;Stuart et al, 2011;Rowley et al, 2016); further research is needed to clarify the distribution of the new species.…”

Section: Notesmentioning

confidence: 99%

“…Located in middle of the Southeast Asian biodiversity hotspot, the Langbian Plateau is known as a local center for herpetofaunal endemism. It is inhabited by numerous species of amphibians and reptiles, many of which were only described recently Nazarov et al, 2012;Poyarkov et al, 2014;Poyarkov et al, 2015a;Poyarkov et al, 2015b;Poyarkov et al, 2017;Poyarkov et al, 2019b;Stuart et al, 2011;Rowley et al, 2016;Vassilieva et al, 2014). The Kukri Snakes of the genus Oligodon Fitzinger, 1826, are one of the most speciose and taxonomically problematic colubrid snake groups distributed in South and Southeast Asia, with over 79 species described (Green, Orlov & Murphy, 2010;Wallach, Williams & Boundy, 2014;Uetz, Freed & Hošek, 2019).…”

Section: Introductionmentioning

confidence: 99%

A new species of Oligodon Fitzinger, 1826 from the Langbian Plateau, southern Vietnam, with additional information on Oligodon annamensis Leviton, 1953 (Squamata: Colubridae)

Nguyen

Tran

Nguyen

et al. 2020

PeerJ

Self Cite

View full text Add to dashboard Cite

We describe a new species of Oligodon from the highlands of the Langbian Plateau, southern Truong Son Mountains, Vietnam, based on morphological and molecular phylogenetic analyses. The new species, Oligodon rostralis sp. nov is distinguished from its congeners by the following morphological characters: medium size in adults (male TL = 582 mm); small and broad head with long protruding snout; dorsal scale row formula 15-15-13; 167 ventrals, 47 subcaudals; single preocular, single postocular; loreal and presubocular absent; six supralabials, third and fourth entering orbit; six infralabials, anterior four contacting first pair of chin shields; internasals separate from prefrontals; nasal divided; single anterior and two posterior temporals; cloacal plate undivided; hemipenes short, bilobed, bifurcating in anterior one third of their length, extending to 8th subcaudal, lacking spines and papillae, with a prominent transverse flounces and distal calyces; six maxillary teeth, the posterior three enlarged; dorsal pattern consisting of 14+4 large dark-brown blotches and a bright-orange vertebral stripe on tail and dorsum; and ventral surfaces in life cream laterally with dark quadrangular spots; dark temporal streak present, edged with white. We also provide additional information on O. annamensis, including a morphological dataset of all specimens known from natural history collections and confirmation of an earlier record of O. annamensis from Cambodia. We also provide the first record of O. annamensis for Dak Lak Province. Phylogenetic analyses of mtDNA genes (3,131 bp of 12S rRNA, 16S rRNA and cyt b) suggest sister relationships of Oligodon rostralis sp. nov. and O. annamensis and place them in one clade with the O. cyclurus and O. taeniatus species groups, which is concordant with previous studies on the phylogenetic relationships of Oligodon. Our study demonstrates high level of herpetofaunal diversity and endemism of Langbian Plateau and further supports the importance of this area for conservation herpetofaunal diversity in Indochina.

show abstract

“…Different DNA‐based methods, particularly DNA barcoding, have been evaluated for identification of fish species in Africa including Nigeria (Nwakanna, Ude, & Unachukwu, ; Nwani et al., ). DNA barcoding is a species identification tool, the information from which may be used as a conservation tool or potentially as part of the evidence to delimit species (Crawford, Alonso, Jaramillo, Sucre, & Ibáñez, ; Crawford et al., ; Gehring, Ratsoavina, & Vences, ; Nazarov et al., ; Vargas, Araújo, & Santos, ). It involves the use of 5′ region of the mitochondrial cytochrome c oxidase subunit I ( COI ) as a target gene (Hebert, Cywinska, Ball, & deWaard, ).…”

Section: Introductionmentioning

confidence: 99%

“…The challenges of the use of morphology lie in the discrimination of closely related organisms (Rasmussen, Morrissey, & Hebert, 2009). This has paved way for the development of improved molecular approaches for identification of fish species (Abdullah & Rehbein, 2017;Nazarov et al, 2012;Nwani, Eyo, & Udoh, 2016;Ratnasingham & Hebert, 2007).…”

Section: Introductionmentioning

confidence: 99%

DNAbarcoding of economically important freshwater fish species from north‐central Nigeria uncovers cryptic diversity

Iyiola

Nneji

Mustapha

et al. 2018

Ecology and Evolution

View full text Add to dashboard Cite

This study examines the utility of morphology and DNA barcoding in species identification of freshwater fishes from north‐central Nigeria. We compared molecular data (mitochondrial cytochrome c oxidase subunit I (COI) sequences) of 136 de novo samples from 53 morphologically identified species alongside others in GenBank and BOLD databases. Using DNA sequence similarity‐based (≥97% cutoff) identification technique, 50 (94.30%) and 24 (45.30%) species were identified to species level using GenBank and BOLD databases, respectively. Furthermore, we identified cases of taxonomic problems in 26 (49.00%) morphologically identified species. There were also four (7.10%) cases of mismatch in DNA barcoding in which our query sequence in GenBank and BOLD showed a sequence match with different species names. Using DNA barcode reference data, we also identified four unknown fish samples collected from fishermen to species level. Our Neighbor‐joining (NJ) tree analysis recovers several intraspecific species clusters with strong bootstrap support (≥95%). Analysis uncovers two well‐supported lineages within Schilbe intermedius. The Bayesian phylogenetic analyses of Nigerian S. intermedius with others from GenBank recover four lineages. Evidence of genetic structuring is consistent with geographic regions of sub‐Saharan Africa. Thus, cryptic lineage diversity may illustrate species’ adaptive responses to local environmental conditions. Finally, our study underscores the importance of incorporating morphology and DNA barcoding in species identification. Although developing a complete DNA barcode reference library for Nigerian ichthyofauna will facilitate species identification and diversity studies, taxonomic revisions of DNA sequences submitted in databases alongside voucher specimens are necessary for a reliable taxonomic and diversity inventory.

show abstract

Two new cryptic species of the Cyrtodactylus irregularis complex (Squamata: Gekkonidae) from southern Vietnam

Cited by 41 publications

References 33 publications

Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species

Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species

A new species of Oligodon Fitzinger, 1826 from the Langbian Plateau, southern Vietnam, with additional information on Oligodon annamensis Leviton, 1953 (Squamata: Colubridae)

DNAbarcoding of economically important freshwater fish species from north‐central Nigeria uncovers cryptic diversity

Contact Info

Product

Resources

About