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TAXONOMIC STATUS OF SPINY RATS (MAXOMYS JENTINK, RODENTIA) FROM INDONESIA AND MALAYSIA BASED ON MORPHOLOGICAL STUDY Achmadi, Anang Setiawan
TREUBIA Vol 37 (2010): Vol. 37, December 2010
Publisher : Research Center for Biology

The morphological study was focused on the analysis of morphometricvariations of the spiny rats (Maxomys Jentink) across their Indonesian and Malaysianranges in order to clarify the taxonomic status of this genus. The genus was widespreadthroughout South Asia, and many taxa (species and subspecies) have been described.Univariate and multivariate analyses (Principal Component Analyses and DiscriminantFunction Analyses) were carried out based on 24 craniometric characters in 187 skulls.Results indicated that Maxomys consist of 13 species: M. whiteheadi, M. surifer, M.rajah, M. ochraceiventer, M. baeodon, M. alticola, M. musschenbroekii, M. hellwaldii,M. wattsi, M. pagensis, M. bartelsii, M. inas and one distinct population of M.whiteheadi from 16 known species of Maxomys in Malaysia and Indonesianarchipelago. The multiple regression analyses showed no sexual dimorphism in relationto the characters used; however all characters were geographically significant in somespecies.

NEW RECORDS OF TWO RARELY ENCOUNTERED, ENDEMIC RATS (RODENTIA: MURIDAE: MURINAE) FROM GUNUNG GANDANGDEWATA, WEST SULAWESI PROVINCE Achmadi, Anang Setiawan; Rowe, Kevin C.; Esselstyn, Jacob A.
TREUBIA Vol 41 (2014): Vol. 41, December 2014
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v41i0.367

We collected specimens of SommerÃ¢â¬â¢s Sulawesi shrew-rat, Sommeromys macrorhinos, at three sites (1600, 2200, and 2600 m) and the Sulawesi small-bodied shrew-rat, Crunomys celebensis, at one site (1600 m) on Gunung Gandangdewata in the western blockÃÂ of the central core of Sulawesi during November 2011 and May 2012. Prior to 2011, S. macrorhinos was known only from the holotype, which was taken on 2 August 1973 at 2400 m near the summit of Gunung Tokala (upper montane forest). Previously, C. celebensis was known only from tropical lowland evergreen rain forest in the Danau Lindu valley and nearby upper drainage of the Sungai Miu in the northern portion of the westcentral mountain block in SulawesiÃ¢â¬â¢s central core. The new specimens of S. macrorhinos and C. celebensis extend their known range of habitats to include the transition between lowland and montane forest. Because the original description of S. macrorhinos was based on a single specimen, we describe some external morphological features and provide measurements of new specimens as a supplement to the original description.Key words: Crunomys celebensis, morphology, shrew-rat, Sommeromys macrorhinos

Variasi ciri morfometrik dari tikus Bunomys chrysocomus di Sulawesi dengan metode PCA (Principal Component Analysis) Risdayanti Adi Purba; Anang Setiawan Achmadi; St. Aisyah Sijid
Prosiding Seminar Biologi Vol 6 No 1 (2020): PROSIDING SEMINAR NASIONAL BIOLOGI DI ERA PANDEMI COVID-19 (OKTOBER 2020)
Publisher : Jurusan Biologi, Fakultas Sains dan Teknologi, Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/psb.v6i1.15576

Bunomys chrysocomus merupakan tikus bukit berambut kuning yang endemik di pulau Sulawesi. Meskipun tikus tersebar luas di Indonesia khususnya Sulawesi, namun penelitian tentang tikus B. chrysocomus masih belum banyak dilakukan. Tujuan penelitian ini adalah untuk mengetahui variasi ciri morfometrik dari tikus B. chrysocomus di Sulawesi dengan metode PCA (Principal Component Analysis). Hasil penelitian menunjukkan bahwa terdapat dua variabel baru dari hasil pengukuran bagian tengkorak tikus mampu menjelaskan total varian sebesar 85,913%. Dua variabel baru yang dibentuk dengan analisa PCA ialah pengukuran tengkorak 1 dan pengukuran tengkorak 2. Kedua variabel baru ini menjadi karakter utama yaitu BBP, BFM, BMF, M1W, M2W, M3W dan BZP yang memiliki karakter kuat dalam variasi morfometrik bagian tengkorak dari tikus B. chrysocomus yang ada di Sulawesi.

TAXONOMIC STATUS OF SPINY RATS (MAXOMYS JENTINK, RODENTIA) FROM INDONESIA AND MALAYSIA BASED ON MORPHOLOGICAL STUDY Anang Setiawan Achmadi
TREUBIA Vol 37 (2010): Vol. 37, December 2010
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v37i0.98

The morphological study was focused on the analysis of morphometricvariations of the spiny rats (Maxomys Jentink) across their Indonesian and Malaysianranges in order to clarify the taxonomic status of this genus. The genus was widespreadthroughout South Asia, and many taxa (species and subspecies) have been described.Univariate and multivariate analyses (Principal Component Analyses and DiscriminantFunction Analyses) were carried out based on 24 craniometric characters in 187 skulls.Results indicated that Maxomys consist of 13 species: M. whiteheadi, M. surifer, M.rajah, M. ochraceiventer, M. baeodon, M. alticola, M. musschenbroekii, M. hellwaldii,M. wattsi, M. pagensis, M. bartelsii, M. inas and one distinct population of M.whiteheadi from 16 known species of Maxomys in Malaysia and Indonesianarchipelago. The multiple regression analyses showed no sexual dimorphism in relationto the characters used; however all characters were geographically significant in somespecies.

NEW RECORDS OF TWO RARELY ENCOUNTERED, ENDEMIC RATS (RODENTIA: MURIDAE: MURINAE) FROM GUNUNG GANDANGDEWATA, WEST SULAWESI PROVINCE Anang Setiawan Achmadi; Kevin C. Rowe; Jacob A. Esselstyn
TREUBIA Vol 41 (2014): Vol. 41, December 2014
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v41i0.367

We collected specimens of Sommerâ€™s Sulawesi shrew-rat, Sommeromys macrorhinos, at three sites (1600, 2200, and 2600 m) and the Sulawesi small-bodied shrew-rat, Crunomys celebensis, at one site (1600 m) on Gunung Gandangdewata in the western blockÂ of the central core of Sulawesi during November 2011 and May 2012. Prior to 2011, S. macrorhinos was known only from the holotype, which was taken on 2 August 1973 at 2400 m near the summit of Gunung Tokala (upper montane forest). Previously, C. celebensis was known only from tropical lowland evergreen rain forest in the Danau Lindu valley and nearby upper drainage of the Sungai Miu in the northern portion of the westcentral mountain block in Sulawesiâ€™s central core. The new specimens of S. macrorhinos and C. celebensis extend their known range of habitats to include the transition between lowland and montane forest. Because the original description of S. macrorhinos was based on a single specimen, we describe some external morphological features and provide measurements of new specimens as a supplement to the original description.Key words: Crunomys celebensis, morphology, shrew-rat, Sommeromys macrorhinos

QUANTIFYING PELAGE COLORATION OF SOUTHEAST ASIA SPINY RATS GENUS Maxomys (MURIDAE: RODENTIA) USING SPECTROPHOTOMETRIC MEASUREMENTS Anang Setiawan Achmadi; Hitoshi Suzuki
ZOO INDONESIA Vol 27, No 2 (2018): Desember 2018
Publisher : Masyarakat Zoologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52508/zi.v27i2.4045

We documented preliminary study of coat color variations within Maxomys, one of the most common rats in the Southeast Asian region. We sampled the skin specimens that mostly deposited at Museum Zoologicum Bogoriense, Indonesia. Quantitative measurements of coat color using spectrophotometer revealed no significant difference in the dorsal pelage showing mostly dark brown (L*= 25-30, a*= 5-7, b*= 10-15). The ventral colorations were variable among the species. We classified five different color types based on the measurements: whitish grey (M. baeodon, M. whiteheadi, M. musschenbroekii, M. bartelsii, and M. dollmani), orange dark brown (M. hylomyoides), chestnut orange (M. ochraceiventer), yellowish brown (M. alticola) and creamy white (M. rajah, M. hellwaldii, and M. surifer). These fur color characteristics can be useful in species recognition, together with the craniometric features. Furthermore, molecular study of coat color variation within Maxomys spp. is needed to elucidate the mechanisms of phenotypic variation in morphology that affect the patterns of divergence, speciation and evolutionary history of Maxomys. Here, we failed to obtain the sequences from Maxomys using Mc1r (melanocortin-1 receptor) gene, and probably will be better to use other gene such as ASIP (agouti signaling peptide) gene.

COMPARISON BETWEEN Trachypithecus auratus AND Trachypithecus cristatus BRAIN SIZE IN INDONESIA Endah Dwijayanti; Anang Setiawan Achmadi; Maharadatunkamsi Maharadatunkamsi; Nanang Supriatna
ZOO INDONESIA Vol 29, No 1 (2020): Juli 2020
Publisher : Masyarakat Zoologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52508/zi.v29i1.3977

Taxonomic studies on Trachypithecus species in Indonesia define that this genus separated into two species that are Trachypithecus auratus and Trachypithecus cristatus with Trachypithecus auratus auratus as a subspecies. To determine relative brain size differences between species of the genus Trachypithecus in Indonesia and to examine clinal variation, a study related to brain size and morphological characters that affect the brain size is carried out. This study analyzes the brain volume between both species and examines its relationship with morphometric measurement and variables such as sex, age, and specimen location. Brain volumes were calculated from braincase volumes using 0.5 mm silica gel as mini beads. This study reveals that there are significant differences in relative brain size inter-species, sex, age and interaction among variable. Overall, T. auratus have a bigger brain size than T. cristatus, and the brain size of males are larger than females. The older individual tends to have similar brain size with younger ones. The different relative brain size on age level influenced by GSL size. Allometric body size affects the size of the brain directly. Also, there is a clinal trend in relative brain size. Trachypithecus auratus brain size is increasing from West Java to Lombok island. Further study is needed to understand the influence of external factor such as ecological and social factors on brain size in Trachypithecus.

EFEKTIVITAS PERANGKAP YANG DIGUNAKAN DALAM KOLEKSI MAMALIA KECIL RODENSIA DAN EULIPOTYPHLA Zulkurnia Irsaf; Annawaty Annawaty; Anang Setiawan Achmadi
Biocelebes Vol. 12 No. 3 (2018)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (327.372 KB)

Ecological studies of small mammals often use several methods with various traps. Effective use of traps can increase the number of catches in this study. Small mammal samples were taken using the method of removal sampling for species diversity and set the traps using random purposive sampling method. In this case we use three types of traps, i.e. snap traps with roasted coconut bait smeared with peanut butter, pitfall traps with drift fence and rat snare with fruit as bait. Collection and installation of bait done at 07.00 WITA in the morning. From this study it is known that the use of traps falls very effectively in the study of small mammals, especially those living in terrestrial. This report provides information on common methods and effective traps are used in studying the diversity of small mammals.

Biosphere Reserve Concept Implementation for Creating Sustainability Y. Purwanto; Hari Nugroho; Anang Setiawan Achmadi; Esti Munawaroh
Journal of Tropical Ethnobiology Vol. 3 No. 1 (2020): January 2020
Publisher : The Ethnobiological Society of Indonesia

The main priority of UNESCO MAB program is to emphasize the implementation of biosphere reserve concept for achieving sustainable development. Biosphere reserve is a concept of site management to harmonize the needs for conservation of both land and coastal ecosystem with the need for economic development in the basis of research on the utilization of natural resources, including cultural resources recognized by UNESCO MAB Program in order to promote a balanced relationship between human and the nature. Principally, the concept of biosfer reserve is applied to bring the conservation of biological diversity into line with sustainable development for achieving a balanced relationship between human and the nature. The advantage of applying the biosphere reserve concept lays on the excellent combination of its three functions, namely: (1) The function associated with conservation of biological resources, ecosystems, and cultural diversity; (2) The function associated with development that supports and enriches sustainable economic development through an ecologicaly and culturally wise approach; and (3) The function associated with provision of logistics supports for various activities related with conservation and sustainable development, in a local, regional, national, or global context, including research, education, training, and monitoring. In implementing those three functions integratively, a zonation approach is applied, in which the site of biosphere reserve is devided into three different areas with specific functions and roles: (1) The core area: It is the area for conservation and it must have a firm, long-term legal protection for preserving the biodiversity, monitoring the undisturbed ecosystems or undertaking non-destructive research, and other “passive” activities such as education and training and ecosystem services; (2) The buffer zone: It is the area encircling or adjoining the core area that is determined to provide protection to the core area against the negative impacts of human activities; and (3) The transition area: The transition area. It is typically the largest part of the biosphere reserve area fuctioning to develope cooperation with local communities. It is established side by side with the buffer zone and this area is a place to develope models for sustainable development and develop an appropriate management of natural resources for the area. Biosphere reserves are used as a place to test and build a sustainable way of life through integrated programs of natural resources management and biodiversity conservation, with the objective to contribute in reducing poverty and increasing the living standard, especially of rural communities. In addition, the implementation of the biosphere reserve concept is also aimed to help reducing the loss of biodiversity, facilitating scientific development and bulding the capacity in the context of providing services neccessary for ecological sustainability.

QUANTIFYING PELAGE COLORATION OF SOUTHEAST ASIA SPINY RATS GENUS Maxomys (MURIDAE: RODENTIA) USING SPECTROPHOTOMETRIC MEASUREMENTS Anang Setiawan Achmadi; Hitoshi Suzuki
ZOO INDONESIA Vol 27, No 2 (2018): Desember 2018
Publisher : Masyarakat Zoologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52508/zi.v27i2.4045

We documented preliminary study of coat color variations within Maxomys, one of the most common rats in the Southeast Asian region. We sampled the skin specimens that mostly deposited at Museum Zoologicum Bogoriense, Indonesia. Quantitative measurements of coat color using spectrophotometer revealed no significant difference in the dorsal pelage showing mostly dark brown (L*= 25-30, a*= 5-7, b*= 10-15). The ventral colorations were variable among the species. We classified five different color types based on the measurements: whitish grey (M. baeodon, M. whiteheadi, M. musschenbroekii, M. bartelsii, and M. dollmani), orange dark brown (M. hylomyoides), chestnut orange (M. ochraceiventer), yellowish brown (M. alticola) and creamy white (M. rajah, M. hellwaldii, and M. surifer). These fur color characteristics can be useful in species recognition, together with the craniometric features. Furthermore, molecular study of coat color variation within Maxomys spp. is needed to elucidate the mechanisms of phenotypic variation in morphology that affect the patterns of divergence, speciation and evolutionary history of Maxomys. Here, we failed to obtain the sequences from Maxomys using Mc1r (melanocortin-1 receptor) gene, and probably will be better to use other gene such as ASIP (agouti signaling peptide) gene.

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