HOLOCENE PALEOENVIRONMENTAL RECONSTRUCTION OF THE SUNDA SHELF, OFF NORTHEASTERN PENINSULAR MALAYSIA

A new species of endemic Cyrtodactylus is described from Pulau Tenggol, Terengganu, off the northeastern coast of Peninsular Malaysia. It differs from other Sunda Shelf species by having a maximum SVL of 92 mm, enlarged tubercles on body and hind limbs but none on fore limbs, 27–35 ventral scale, a single row of transversely enlarged, median subcaudal scales, 18–20 subdigital lamellae on fourth toe, four precloacal pores, and a single row of enlarged, non porebearing femoral scales beneath each thigh which are not continuous with the precloacal pores.

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Macrobenthos diversity along the Exclusive Economic Zone of East Coast Peninsular Malaysia

Journal of Environmental Biology ◽

10.22438/jeb/42/3(si)/jeb-13 ◽

2021 ◽

Vol 42 (3(SI)) ◽

pp. 817-823

Author(s):

B.B. Shafie ◽

◽

A. Man ◽

N.F. Ali ◽

A.A. Rahim ◽

...

Keyword(s):

South China Sea ◽

East Coast ◽

Standing Stock ◽

Environmental Parameters ◽

Peninsular Malaysia ◽

Depth Gradient ◽

Sunda Shelf ◽

Faunal Composition ◽

Western South China Sea ◽

Abundance And Diversity

Aim: To examine the standing stock of macrobenthos along a depth gradient at regional scales in the Sunda Shelf of Malaysian Economic Exclusive Zone (EEZ). Methodology: Macrobenthos was sampled with a Smith–McIntyre grab at 19 stations on the continental shelf of the South-western South China Sea (east coast of Peninsular Malaysia) within the EEZ and was carried out onboard MV SEAFDEC II in May/June 2016. Results: The faunal composition, abundance, and diversity of species, together with environmental parameters were studied. A total of 10,232 individuals comprising 105 families were identified. The dominant macrobenthic group was Mollusca (55.25%), followed by Annelida (26.80%) and Arthropoda (15.36%), while the Echinodermata and Miscellaneous group recorded 1.13% and 1.43% respectively. Based on Bray-Curtis species similarities, five different sample groups (SGs) were distinguished, which were located in different zones and gradients of EEZ. Interpretation: Variations in the macrobenthic community is significantly associated with depth, temperature, and salinity. Further research should be conducted on other factors that contribute to the diversity of macrobenthos along the east coast of Peninsular Malaysia’s EEZ.

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Three new species of Cyrtodactylus (Squamata: Gekkonidae) from Peninsular Malaysia

Zootaxa ◽

10.11646/zootaxa.1921.1.1 ◽

2008 ◽

Vol 1921 (1) ◽

pp. 1-23 ◽

Cited By ~ 3

Author(s):

L. LEE GRISMER ◽

CHAN KIN ONN ◽

JESSE L. GRISMER ◽

PERRY L. WOOD, JR. ◽

DAICUS BELABUT

Keyword(s):

New Species ◽

West Coast ◽

Color Pattern ◽

Peninsular Malaysia ◽

High Potential ◽

Sunda Shelf ◽

The West ◽

Forest Reserve ◽

Three New Species

Three new species of the gekkonid genus Cyrtodactylus are described from Peninsular Malaysia; C. jarakensis sp. nov. from Pulau Jarak off the west coast of Perak, C. batucolus sp. nov. from Pulau Besar of the Water Islands Archipelago off the west coast of Melaka, and C. pantiensis sp. nov. from the Gunung Panti Forest Reserve, Johor. All are distinguishable from other Sunda Shelf species of Cyrtodactylus in having unique combinations of morphological and color pattern characteristics. The continued high potential for finding additional new species in unexplored regions of southern Peninsular Malaysia and its associated archipelagos is further supported with these findings.

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A new insular species of Cyrtodactylus (Squamata: Gekkonidae) from the Langkawi Archipelago, Kedah, Peninsular Malaysia

Zootaxa ◽

10.11646/zootaxa.1924.1.3 ◽

2008 ◽

Vol 1924 (1) ◽

pp. 53-68 ◽

Cited By ~ 3

Author(s):

L. LEE GRISMER ◽

NORHAYATI AHMAD

Keyword(s):

New Species ◽

Endemic Species ◽

Color Pattern ◽

Peninsular Malaysia ◽

The State ◽

Northwest Coast ◽

Sunda Shelf ◽

A New Species

A new species of the gekkonid lizard, Cytrodactylus macrotuberculatus sp. nov., is described from Pulau Langkawi of the Langkawi Archipelago located off the northwest coast of Peninsular Malaysia in the state of Kedah. This species had been previously recognized as C. pulchellus but is differentiated here from that species and all other Sunda Shelf Cyrtodactylus on the basis of its strong tuberculation and other scale and color pattern characteristics. This represents the second endemic species known from the Langkawi Archipelago.

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ABSTRACT: Late Quaternary Paleoenvironmental Reconstruction of a Drowned Drainage System - Sunda Shelf, South China Sea: Foraminiferal Evidence

AAPG Bulletin ◽

10.1306/3fef4bbd-1741-11d7-8645000102c1865d ◽

2002 ◽

Vol 86 ◽

Author(s):

Charu Sharma1, David B. Scott1

Keyword(s):

South China Sea ◽

South China ◽

Late Quaternary ◽

Drainage System ◽

Paleoenvironmental Reconstruction ◽

Sunda Shelf ◽

China Sea

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Re-assessment of the Reinwardt’s Gliding Frog, Rhacophorus reinwardtii (Schlegel 1840) (Anura: Rhacophoridae) in Southern Thailand and Peninsular Malaysia and its re-description as a new species

Zootaxa ◽

10.11646/zootaxa.2505.1.2 ◽

2010 ◽

Vol 2505 (1) ◽

pp. 40 ◽

Cited By ~ 5

Author(s):

CHAN KIN ONN ◽

L. LEE GRISMER

Keyword(s):

New Species ◽

Species Recognition ◽

Peninsular Malaysia ◽

Sunda Shelf ◽

Southern Thailand ◽

Taxonomic Changes ◽

Hands And Feet ◽

A New Species

Rhacophorus reinwardtii from Southern Thailand and Peninsular Malaysia is found to be morphologically distinct from Javan and Bornean populations and is herein described as a new species. Rhacophorus norhayatii sp nov. can be differentiated from R. reinwardtii by having a larger maximum SVL in males (64.7 mm vs. 55 mm); lacking spots on dorsum; higher degree of interdigital web pigmentation on hands and feet; and rusty brown markings on the flanks. This study adds to the growing list of taxonomic changes in Sunda Shelf taxa by demonstrating that species previously thought to be widely distributed across Sundaland are indeed distinct lineages worthy of species recognition.

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Ancient divergence time estimates inEutropis rugiferasupport the existence of Pleistocene barriers on the exposed Sunda Shelf

PeerJ ◽

10.7717/peerj.3762 ◽

2017 ◽

Vol 5 ◽

pp. e3762 ◽

Cited By ~ 1

Author(s):

Benjamin R. Karin ◽

Indraneil Das ◽

Todd R. Jackman ◽

Aaron M. Bauer

Keyword(s):

Sea Level ◽

Divergence Time ◽

Peninsular Malaysia ◽

Middle Pleistocene ◽

Divergence Times ◽

Sea Level Changes ◽

Sunda Shelf ◽

Sea Levels ◽

Island Populations ◽

Divergence Time Estimates

Episodic sea level changes that repeatedly exposed and inundated the Sunda Shelf characterize the Pleistocene. Available evidence points to a more xeric central Sunda Shelf during periods of low sea levels, and despite the broad land connections that persisted during this time, some organisms are assumed to have faced barriers to dispersal between land-masses on the Sunda Shelf.Eutropis rugiferais a secretive, forest adapted scincid lizard that ranges across the Sunda Shelf. In this study, we sequenced one mitochondrial (ND2) and four nuclear (BRCA1,BRCA2,RAG1, andMC1R) markers and generated a time-calibrated phylogeny in BEAST to test whether divergence times between Sundaic populations ofE. rugiferaoccurred during Pleistocene sea-level changes, or if they predate the Pleistocene. We find thatE. rugiferashows pre-Pleistocene divergences between populations on different Sundaic land-masses. The earliest divergence withinE. rugiferaseparates the Philippine samples from the Sundaic samples approximately 16 Ma; the Philippine populations thus cannot be considered conspecific with Sundaic congeners. Sundaic populations diverged approximately 6 Ma, and populations within Borneo from Sabah and Sarawak separated approximately 4.5 Ma in the early Pliocene, followed by further cladogenesis in Sarawak through the Pleistocene. Divergence of peninsular Malaysian populations from the Mentawai Archipelago occurred approximately 5 Ma. Separation among island populations from the Mentawai Archipelago likely dates to the Pliocene/Pleistocene boundary approximately 3.5 Ma, and our samples from peninsular Malaysia appear to coalesce in the middle Pleistocene, about 1 Ma. Coupled with the monophyly of these populations, these divergence times suggest that despite consistent land-connections between these regions throughout the PleistoceneE. rugiferastill faced barriers to dispersal, which may be a result of environmental shifts that accompanied the sea-level changes.

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