Awal Riyanto

Awal Riyanto
Museum Zoologicum Bogoriense, Research Center for Biology, Indonesian Institute of Sciences · Herpetofauna Laboratory

Master of Science
Study on systematic, biogeography and conservation of Indonesian Herpetofauna

About

84
Publications
60,383
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867
Citations
Citations since 2017
46 Research Items
630 Citations
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2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
Introduction
I live in a world that deifies academic degrees, but I like to just focus on my research. I am respect to the people who have authority in their field of knowledge, not authority on an access. Currently I am doing study on systematic, biogeography and conservation of Indonesian Herpetofauna (focus interest Cyrtodactylus) Here some of my ID SINTA: 6685386 SCOPUS: 23467691200 ORCID: 0000-0002-6887-9352

Publications

Publications (84)
Article
Full-text available
Since the last list of amphibians and reptiles of the Natuna Islands was published nearly 20 years ago, here we provide an updated species list of the herpetofauna of these remote Indonesian islands. We compiled and summarized data from the available literature, and from our own studies conducted in 2011, 2012, 2013, 2017, and 2019. In total, 120 s...
Article
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Although they are among the most abundant snakes on Earth, and are heavily exploited for their skins and meat, Asian bockadams (or “dog-faced water snakes”, Cerberus schneiderii) have attracted relatively little study across their wide geographic range. Based on dissection of 3,382 snakes brought to processing facilities in and around the city of C...
Article
Full-text available
Cyrtodactylus marmoratus is originally described based on the specimen from Java. Due to the marbled body colour pattern and the similarity in morphology, many specimens from outside of Java have been identified as C. marmoratus. The ongoing research, both molecular and morphological studies, showed that C. marmoratus is restricted to Java. The tax...
Article
Bronchocela jubata Duméril and Bibron, 1837 is one of the commonest species of the genus, known mostly from Java Island and southern parts of Sumatra. It is rare in Bali and Borneo. The juveniles are often confused with its morphologically similar congener, B. cristatella, which occurs widely throughout the Indonesian Archipelago and Peninsular Mal...
Article
Bronchocela hayeki (Müller, 1928) is one of the rarest species of the genus, known only from a handful of museum specimens from five locations in North Sumatra, and often confused with its similar congener, B. cristatella, which occurs widely throughout the Indonesian Archipelago and Peninsular Malaysia. Here, we examined the morphology of B. hayek...
Article
Based on phylogenetic and morphological evidence, we describe a new species of Cyrtodactylus from Obi Island in the northern Moluccas, Indonesia. The new species is genetically and morphologically allied to the Melanesian species Cyrtodactylus papuensis but is distinguished by its larger body size, fewer midbody scale rows, deep precloacal groove i...
Article
Full-text available
The house gecko (Gekko gecko) or tokek is a reptile species known widely used as an export commodity. Overexploitation can threaten wild populations of tokek in the wild. The research was conducted through a Visual Encounter Survey on the islands of Tidung, Pari, and Untung Jawa from 27 November to 02 December 2021. We also distributed questionnair...
Article
To reveal the diversity of Indonesian bent-toed geckos, we pay attention to Kalimantan (Borneo)—an island which has received less attention than other Indonesian islands such as Sumatra, Java, Sulawesi, the Moluccas, and the Lesser Sunda archipelagos. About 30 years after Hikida (1990) described three new Cyrtodactylus from Borneo, four more specie...
Article
Full-text available
Nyctimystes infrafrenatus Günther is a widespread frog species distributed across northern Australia, New Guinea, Bismarck archipelago and in the eastern part of Indonesia archipelago where the species thus encompasses two biogeographic regions, Papua and Wallacea. We evaluated phylogenetic relationships among the populations from Papua and Molucca...
Article
Spinicauda ciremaiensis sp. nov. (Nematoda: Heterakidae) from the large intestine of Gonocephalus kuhlii (Reptilia: Agamidae) collected in Gunung Ciremai National Park, West Java, Indonesia is described and illustrated. Of the five described species of Spinicauda from the Oriental region, Spinicauda ciremaiensis sp. nov. comes closest to S. sumatra...
Article
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We review the taxonomic status of Oligodon waandersi sensu lato after examining all the name-bearing types (including synonyms) and morphological evidence. Oligodon waandersi sensu stricto is widely distributed (up to 1200 m above sea level) throughout the southern, some parts of the central, and the northern slopes of Central Sulawesi Island, Indo...
Article
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Biodiversity knowledge is widely heterogeneous across the Earth’s biomes. Some areas, due to their remoteness and difficult access, present large taxonomic knowledge gaps. Mostly located in the tropics, these areas have frequently experienced a fast development of anthropogenic activities during the last decades and are therefore of high conservati...
Article
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Karstic landscapes are immense reservoirs of biodiversity and range-restricted endemism. Nowhere is this more evident than in the world’s third-largest vertebrate genus Cyrtodactylus (Gekkonidae) which contains well over 300 species. A stochastic character mapping analysis of 10 different habitat preferences across a phylogeny containing 345 descri...
Article
We describe a new species of the Gonocephalus megalepis group and provide new morphological and distribution data for the three other species of the group. The combination of a wide gap between the nuchal and dorsal crests, distinctly heterogenous scales on the flanks, a gular crest, two large tubercular scales ventral to the tympanum, and 97–125 s...
Article
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Harvest monitoring is an alternative strategy to determine the impacts of exploitation which is useful for conservation strategies. One of the exploited turtles, C. amboinensis in three Indonesia provinces that have high rates of turtle harvesting, North Sumatra, South Sumatra, and Central Kalimantan were moniotored and reported here. The harvest m...
Article
The large and enigmatic New Guinean pythons in the genus Leiopython are harvested from the wild to supply the international trade in pets. Six species are currently recognized (albertisii, biakensis, fredparkeri, huonensis, meridionalis, montanus) but the taxonomy of this group has been controversial. We combined analysis of 421 nuclear loci and co...
Article
The bent-toed geckos of the genus Cyrtodactylus are the most speciose land vertebrates of Southeast Asia (about 300 species so far) and new species continue to be recognized at a rapid rate. Within the last decade three new species were described from Java, Indonesia, C. semiadii, C. petani, and C. klakahensis. The latter two are very similar, exce...
Article
Full-text available
Guntoro J, Wirdateti, Riyanto A. 2020. The very low genetic variability on Aceh Tamiang's (Indonesia) population of Painted Terrapin (Batagur borneoensis) inferred by cytochrome oxidase I (CO I) and D-loop (control region). Biodiversitas 21: 2514-2520. Populations of Batagur borneoensis have been rapidly decreasing due to the harvesting of adults a...
Article
Full-text available
A new bent-toed gecko species of the genus Cyrtodactylus is described herein from West Bali National Park on the island of Bali, Indonesia. The Cyrtodactylus from Bali have been recognized as C. fumosus for nearly a century. However, recent detailed examination of the type material of C. fumosus has revealed that Balinese Cyrtodactylus represent at...
Article
ContextEach year, millions of reptile skins are commercially exported from Southeast Asia for exotic leathers. Quotas are commonly used to regulate this trade, but quotas are sometimes exceeded and do little to ensure harvest sustainability. AimsTo explore the relationship between the size of live pythons and their skins, and to assess whether skin...
Poster
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Indonesia is a large country in Southeast Asia, one of the most biologically diverse with high levels of diversity and its endemism. The nation has a long history of amphibians and reptiles exploration since the Dutch era in the 1820s, such as Heinrich Kuhl, Johan Conrad van Hasselt, Heinrich Boie, Salomon Müller. Many species of amphibians and rep...
Conference Paper
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Involving public to collect data on species through citizen science is a new tool that has not been utilized in full in Indonesia. A citizen science project called GO ARK (Gerakan Observasi Amfibi Reptil Kita or Movement to Observe Our Amphibian and Reptile) were launched in Bogor as part of Amfibi Reptil Kita (ARK) program that started in 2016. Th...
Article
Wildlife populations exposed to intense harvesting often exhibit shifts in attributes of the commercial offtake (e.g., numbers, body sizes, body condition, sex ratios, size at maturation, reproductive frequency). To look for such changes, we examined >2,500 specimens of field‐collected blood pythons (Python brongersmai) brought to 2 processing faci...
Book
Full-text available
Kabupaten Tambrauw yang terletak d wilayah Kepala Burung Papua (Vogelkop) telah ditetapkan sebagai kabupaten konservasi. Hal ini dilakukan untuk meningkatkan potensi pariwisata di daerah tersebut, sekaligus sebagai usaha untuk mendidik masyarakat untuk semakin peduli lingkungan. Meskipun demikian, usaha untuk menggali potensi keanekaragaman hayati...
Article
Full-text available
We describe a new species of rock gecko of the genus Cnemaspis from Java, Indonesia, representing the first record of the genus for this Island. The new species was collected from the southern slopes of Gunung Muria, a dormant volcano in Central Java. The new species is easily distinguished from all congeners by having a maximum SVL of 58.1 mm in m...
Article
Full-text available
Riyanto A, Sulaeman TN, Rachman N, Chaidir DM, Trilaksono W, Farajallah A. 2019. Short Communication: Herpetofauna diversity, potential ecotourism in Mount Galunggung, West Java, Indonesia. Biodiversitas 20: 1173-1179. Here we provide a list of herpetofauna at Mount Galunggung, West Java, Indonesia as potential biodiversity for ecotourism. Data wer...
Article
Full-text available
Short-tailed pythons (Python breitensteini, P. brongersmai and P. curtus) are exploited in large numbers for the international leather trade, but their ecology remains poorly known. We quantify sexual dimorphism and reproductive output in P. breitensteini from Kalimantan and P. brongersmai from sites in north and south Sumatra. Sexual dimorphism wa...
Article
Full-text available
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 neotyp...
Article
The recent description of Cyrtodactylus tahuna from Sangihe Island and descriptions of other new species from remote islands in the Indo-Australian Archipelago indicate the important role of oceanic dispersal and isolation in the evolution and diversification of the genus Cyrtodactylus. We provide another example involving Tanahjampea Island, a rem...
Article
Cyrtodactylus tahuna sp. nov. is a new bent-toed gecko we describe herein based on three specimens from Sangihe, North Sulawesi, Indonesia, an island situated in the northern corner of the Wallacea biodiversity hotspot. The new species is a medium sized Cyrtodactylus with a SVL of up to 78.5 mm in adult males and 79.2 mm in females. It is easily di...
Article
Full-text available
We used Massively Parallel High-Throughput Sequencing to obtain genetic data from a 145-year old holotype specimen of the flying lizard, Draco cristatellus . Obtaining genetic data from this holotype was necessary to resolve an otherwise intractable taxonomic problem involving the status of this species relative to closely related sympatric Draco s...
Data
ND2 sequence data for members of the Draco fimbriatus group plus 13 mitochondrial sequence reads obtained from the D. cristatellus holotype This file includes ND2 sequence data obtained via traditional Sanger sequencing for 39 individuals representing Draco cristatellus, D. fimbriatus, D. hennigi, D. punctatus, and D. maculatus, plus 183 base pairs...
Article
Full-text available
1) On page 589 line 6, the correct sentence should be the tail of the holotype is regenerated with a total length 52.9 mm. 2) On page 590, line 25, the character comparison inverted, correct sentence should be presence (versus absence) of a single median row of keeled subcaudals and .... 3) On page 592 Table 2, the character 3 (column 3) for Cnemas...
Preprint
Full-text available
We used Massively Parallel High-Throughput Sequencing to obtain genetic data from a 145-year old holotype specimen of the flying lizard, Draco cristatellus. Obtaining genetic data from this holotype was necessary to resolve an otherwise intractable taxonomic problem involving the status of this species relative to closely related sympatric Draco sp...
Preprint
Full-text available
We used Massively Parallel High-Throughput Sequencing to obtain genetic data from a 145-year old holotype specimen of the flying lizard, Draco cristatellus . Obtaining genetic data from this holotype was necessary to resolve an otherwise intractable taxonomic problem involving the status of this species relative to closely related sympatric Draco s...
Article
Full-text available
This paper is the first taxonomic treatment of Sumatran Philautus since the early 20th century. We redescribe P. cornutus and P. petersi from new specimens, restrict P. petersi to Great Natuna Island, and reinstate the name P. larutensis for the populations on Borneo, Peninsular Malaysia, and Sumatra. We then synonymize P. similis with P. larutensi...
Article
Full-text available
A new species of rock gecko of the genus Cnemaspis Strauch is described from Belitung Island, Indonesia. The new species is differentiated from all other species in the Southern Sunda clade (sensu Grismer et al. 2014a) by having a unique combination of characters including: (1) a maximum SVL of 54.1 mm, (2) five or six postmental scales, (3) enlarg...
Article
Commercial production systems for wildlife increasingly involve closed-cycle captive breeding, in which effective regulation requires methods for verifying the provenance of stock. We compared the isotopic and elemental compositions of skin from wild and captive-bred pythons raised under different diet regimes in Indonesia and Viet Nam to examine t...
Article
We describe the sixth species of bent-toed gecko from the Lesser Sunda Islands, Indonesia. This species was first collected on the banks of the Oi Marai River on the low northern slopes of Gunung (Mount) Tambora on Sumbawa Island. The new species is differentiated from Greater Sunda Islands (including Sulawesi) and Lesser Sunda Islands congeners by...
Article
Full-text available
Sustainability of wildlife harvests is critical but difficult to assess. Evaluations of sustainability typically combine modelling with the measurement of underlying abundances. For many taxa harvested in developing countries, however, abundances are near-impossible to survey and a lack of detailed ecological information impedes the reliability of...
Article
Full-text available
We describe Cyrtodactylus hitchi sp. nov., a new species of Bent-toed Gecko from montane forests in the Mekongga Mountains, South East Sulawesi, Indonesia. Although we cannot speculate about relationships, morphologically it shares several traits with C. batik, a large species known only from Mount Tompotika near the tip of Sulawesi's Eastern Penin...
Article
Full-text available
We redescribe Cyrtodactylus lateralis (Werner) on the basis of new specimens. Cyrtodactylus lateralis is a prehensiletailed species, known from scattered lowland to mid-elevation localities in northern Sumatra. The prehensile-tailed Cyrtodactylus are more speciose and have a wider distribution than previously thought. This group includes a mainland...
Article
Full-text available
Cyrtodactylus petani sp. nov. is a new species of Bent-toed Gecko from Java, Indonesia that had been masquerading under the name C. fumosus (Müller, 1895). The new species is differentiated from C. fumosus and all its Sundaland congeners by having the following combination of morphological characters: a maximum SVL of 57.2 mm; nine or ten supralabi...
Article
Full-text available
Nyctimystes is currently diagnosed by a combination of two characters, namely vertical pupil and a palpebral venation. In a newly collected series of “Nyctimystes rueppelli” this combination of characters is found wanting and the species is therefore removed from Nyctimystes and transferred to Litoria. Removal of this species from Nyctimystes now a...
Article
Full-text available
We describe Cyrtodactylus psarops sp. nov. and C. semicinctus sp. nov., two new species of bent-toed geckos from montane forests in the southern Bukit Barisan Range of Sumatra, Indonesia. The new species are closely related to one another and to C. semenanjungensis, a lowland species currently known only from Peninsular Malaysia. Three characters o...
Article
Cyrtodactylus rosichonariefi sp. nov. is the second newly described species of Bent-toed gecko from Bunguran Island (Great Natuna), Indonesia. This species occurs in the Sekunyam Forest and is differentiated from all other species of the C. semenanjungensis species group of the Thai-Malay Peninsula by having the following unique combination of char...
Article
Full-text available
We describe a new species of Cnemaspis from southern Sumatra, Indonesia. The new species is the first Cnemaspis reported from Sumatra and is a large (52.6–58.7 mm in snout–vent length [SVL]) nocturnal species. A combination of the following characters distinguishes the new species from all other Southeast Asian congeners: adults reaching 58.7 mm SV...
Article
Full-text available
We describe a new species of Cnemaspis from southern Sumatra, Indonesia. The new species is the first Cnemaspis reported from Sumatra and is a large (52.6–58.7 mm in snout–vent length [SVL]) nocturnal species. A combination of the following characters distinguishes the new species from all other Southeast Asian congeners: adults reaching 58.7 mm SV...
Article
Cyrtodactylus rosichonariefi sp. nov. is the second newly described species of Bent-toed gecko from Bunguran Island (Great Natuna), Indonesia. This species occurs in the Sekunyam Forest and is differentiated from all other species of the C. semenanjungensis species group of the Thai-Malay Peninsula by having the following unique combination of char...
Article
Full-text available
A well-supported and well-resolved phylogeny based on a concatenated data set from one mitochondrial and two nuclear genes, six morphological characters, and nine color pattern characters for 44 of the 50 species of the Southeast Asian Rock Geckos (genus Cnemaspis Strauch, 1887) is consistent with the previous taxonomy of Cnemaspis based solely on...
Article
Full-text available
A new species of gekkonid lizard Hemiphyllodactylus engganoensis sp. nov. from Pulau Enggano, southwestern Sumatra, Indonesia is differentiated from all other congeners by having the unique combination of a maximum SVL of 37.3 mm; six chin scales; no enlarged postmentals; five circumnasal scales; three or four scales between the supranasals; 12 sup...
Article
A new small karst-dwelling species of the genus Cyrtodactylus is described from East Java and Special Province of Yogyakarta, Indonesia. Cyrtodactylus semiadii sp. nov. is a small species (SVL to 47.1 mm in females, 42.1 mm in males) distinguished from all other congeners by unique characters combination: short, robust, cylindrical tail, indistinct...
Article
Full-text available
We described three new species of the genus Chiromantis, one added as a member of Javan frogs and two others as new members of Sumatran frogs. Discovery of the new frogs from Sumatra and Java is not surprising. Because Sumatra is one of the biggest islands in Indonesia with varied habitat types, herpetofaunal survey especially on frogs in this isla...
Article
Full-text available
This paper provides a review of the natural history and harvest levels of the Asiatic soft-shell turtle Amyda cartilaginea in Indonesia. A. cartilaginea is distributed widely in Indonesia, mostly in wetlands of the major islands. Surveys have found that A. cartilaginea reside in various freshwater habitats, even some near the vicinity of human sett...
Conference Paper
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Abstrak— Pulau Bali terkenal akan objek wisatannya, dari kekayaan budaya maupun alamnya yang menawan. Taman Nasional Bali Barat (TNBB) merupakan kawasan konservasi yang di dalamnya memiliki berbagai ekosistem yaitu savana, hutan bakau, hutan muson dan hutan pegunungan. Pengetahuan mengenai keragaman herpetofauna yang terdapat dalam TNBB ini dapat d...
Article
Cyrtodactylus hikidai sp. nov. is a new gekkonid species described on the basis of 13 specimens collected from Mount Ranai, Bunguran Island, Indonesia. This large Cyrtodactylus (female SVL up to 102.2 mm, male SVL up to 100.6 mm) differs from all other Sunda Shelf species of Cyrtodactylus by the combination of a reticulated color pattern on the dor...
Article
Cyrtodactylus hikidai sp. nov. is a new gekkonid species described on the basis of 13 specimens collected from MountRanai, Bunguran Island, Indonesia. This large Cyrtodactylus (female SVL up to 102.2 mm, male SVL up to 100.6 mm)differs from all other Sunda Shelf species of Cyrtodactylus by the combination of a reticulated color pattern on the dorsu...
Chapter
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Mount Slamet with an altitude of 3432 m above sea level is a water catchment area (water catchment area) and one of the upstream watersheds to Serayu River (DAS). The study on herpetofaunal community in different habitat types at water catchment area and upstream of DAS Serayu has been conducted. The study was conducted on 2 until 9 March 2010 in w...
Article
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We examined stomach contents of 64 adult preserved specimens of Pseudocqloles tympanistriga (Squamata: Agamidae) that was collected during the rainv season (April 2006 and March 200g) from Mount Ciremai, West Java. Diets were composed of various F?es of small arthropods, with no plant material being eaten. The Arban popularion consumed only 12 prey...
Article
Telah dilakukan analisis isi lambung dari 64 spesimen koleksi Pseudocalotes tympanistriga (Squamata: Agamidae) yang dikoleksi saat musim penghujan (April 2006 dan Maret 2008) dari Gunung Ciremai, Jawa Barat. Terungkap bahwa pakan alami terdiri atas bermacam arthropoda kecil dan tidak terdapat unsur material tumbuhan. Terungkap pula bahwa populasi P...
Article
Full-text available
We examined patterns of geographic variation within Polypedates leucomystax using multivariate statistical analyzes of 14 morphological characters measured from 146 specimens obtained from Sumatra, Java, Kalimantan, and Sulawesi. Discriminant analysis revealed ten morphological characters and found that the Sulawesi population is morphologically di...
Article
Full-text available
Riyanto A (2011) Herpetofaunal community structure and habitat associations in Gunung Ciremai National Park, West Java, Indonesia. Biodiversitas 12: 38-44. Community structure and habitat associations of amphibians and reptiles on both rainy and dry seasons of six habitat types of three sites in Gunung Ciremai National Park, West Java were investig...
Article
Full-text available
ABSTRACT The Loss and Recent Condition Habitat of Sulawesian Tortoise (Indotestudo forstenii) at Cape Santigi, Central Sulawesi, Indonesia. Unsupervised method of remote sensing was applied were evaluated to compute the habitat loss during five years, from 2001 to 2005 using MultispecW32 software. Meanwhile, the fieldwork was done from 22 to 30 Jun...