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Publications (115)
The beneficial or detrimental effects of human-built marine structures (piers, breakwaters, and seawalls) on macrozoobenthic assemblages and diversities are currently underexplored. The present study investigated the enhancement of β-diversity of oysterbed-associated species on breakwaters constructed along sandy beaches. We compared habitat comple...
Freshwater snails of the family Bithyniidae on mainland Southeast Asia are important intermediate hosts of zoonotic parasites. However, bithyniids in the southern tip of the mainland, in Peninsular Malaysia and Singapore, have remained largely overlooked. We review records of the bithyniids from this target region based on literature and museum mat...
In recent years there has been increasing concern in Australia about the impacts of invasive marine species (IMS). Strict quarantine measures have been introduced to reduce the potential for IMS introductions. The Pacific oyster, Magallana gigas (formerly Crassostrea gigas), is a species of key concern. It was successfully introduced to southeaster...
Pulau Satumu is the southernmost islet within Singapore’s territorial jurisdiction. It is often referred to as Raffles Lighthouse or Raffles Light after its lighthouse, which began operating in 1855. Some notes of interest on the islet’s etymology and history, such as the earliest known name being “the Coney” or “Coney Island”, are provided. We pre...
The South Java Deep-Sea (SJADES) Biodiversity Expedition 2018 sampled the deeper waters of the Sunda Strait and the slopes of the Sunda Trough off the southern coastline of West and Central Java. More than 60 families of gastropods, estimated to be in excess of 300 species, were collected during the expedition. Pending studies focusing on specific...
Neritid snails are diverse and conspicuous in tropical coastal environments. They can serve as indicators of environmental change and can provide conservation information. In the present review of the neritid species of Brunei Darussalam, we report sixteen species, including seven new records from estuarine, mangrove and rocky-shore habitats. These...
Neritid snails are diverse and conspicuous in tropical coastal environments. They can serve as indicators of environmental change and can provide conservation information. In the present review of the neritid species of Brunei Darussalam, we report sixteen species, including seven new records from estuarine, mangrove and rocky-shore habitats. These...
The Vermetidae is a family of sessile marine gastropods whose members are difficult to identify accurately, but one species, Eualetes tulipa is widely documented as an introduced species globally. In Asia, there is only one known record of this species from India to date. We report the presence of E. tulipa in Singapore based on DNA barcoding. This...
In the Indo-West Pacific, intertidal slugs of the genus Platevindex Baker, 1938 are common in mangrove forests, where they typically live on the roots and trunks of mangrove trees. These slugs are easily distinguished from most onchidiids by their hard notum and narrow foot, but despite their large size and abundance, species diversity and geograph...
Thailand is a large Southeast Asian country on the margin of the biodiverse coral triangle. It has a 3,299 km coastline on both the Gulf of Thailand in the Pacific Ocean and the Andaman Sea in the Indian Ocean. An extensive literature and internet search documented over 15,000 records of 3,359 species of Thai marine and estuarine molluscs. Records...
The genus Peronia Fleming, 1822 includes all the onchidiid slugs with dorsal gills. Its taxonomy is revised for the first time based on a large collection of fresh material from the entire Indo-West Pacific, from South Africa to Hawaii. Nine species are supported by mitochondrial (COI and 16S) and nuclear (ITS2 and 28S) sequences as well as compara...
A new genus Swennenia is proposed for Gascoignella jabae, a small, atypical sacoglossan slug that was described based on a single specimen and provisionally placed in the Platyhedylidae. This species has no rhinophores or oral tentacles, and is unique in having a pair of prominent cerata on its posterior end. Dissections showed the arrangement of t...
Bioinvasion is a growing concern in aquatic ecosystems as it severely impacts biodiversity, causing ecosystem changes and heavy economic losses. The invasive bivalve mussel Mytella strigata (Hanley, 1843) is spreading in many estuarine ecosystems and brackishwater lakes in Kerala coast. Its rapid spread across the state might have been triggered by...
One of the syntypes of Strombus robustus G.B. Sowerby iii, 1875 has been discovered in the collection of NHMUK and is designated as lectotype. The status of this species, allocated to Margistrombus Bandel, 2007, is addressed. Both Strombus (Dolomena) marginatus sowerbyorum Visser & Man in ’t Veld, 2005 and Margistrombus boucheti Thach, 2016 are jun...
First record and range extension of Liotina cycloma
Tomlin, 1918 (Gastropoda: Liotiidae) to the Central
Indian Ocean
As part of an ongoing effort to revise the taxonomy of air-breathing, marine, onchidiid slugs, a new genus, Laspionchis Dayrat & Goulding, gen. nov. , is described from the mangroves of South-East Asia. It includes two new species, Laspionchis boucheti Dayrat & Goulding, sp. nov. , and Laspionchis bourkei Dayrat & Goulding, sp. nov. , both distribu...
Acta Zoologica Bulgarica
Here's the complete link to the PDF file :
http://www.acta-zoologica-bulgarica.eu/downloads/acta-zoologica-bulgarica/2020/002337.pdf
The present study reviews the recent species of the genus Agaronia in the Sundaic region based on conchological characteristics and geographical information. Five species with rather well defined and restricted distributional ranges are recognised. Agaronia adamii is determined to be the only species occurring along the South China Sea coasts of Bo...
Southeast Asian apple snails, Pila spp., have been declining since the introduction of globally invasive, confamilial South American Pomacea spp., yet Pila ecology remains poorly studied, with most occurrence records unconfirmed. Pila scutata, a previously widespread species, presumed native to the Malay peninsula and assessed as Least Concern in t...
Marine urbanization and the construction of artificial coastal structures such as seawalls have been implicated in the spread of non-native marine species for a variety of reasons, the most common being that seawalls provide unoccupied niches for alien colonisation. If urbanisation is accompanied by a concomitant increase in shipping then this may...
Peronina Plate, 1893 is a genus of onchidiids that live on the mud in mangrove forests. Peronina can be identified in the field by the lung opening at the margin between the ventral hyponotum and the dorsal notum, and by the distinctive scalloped notum edge. This genus was previously known only from the holotype of the type species, Peronina alta P...
The genus‐group name Opisthoporus was first established in a work by Pfeiffer (1851). The contents of the work make it clear that Benson was responsible for the name and authorship is to be attributed to Benson in Pfeiffer (1851). We discuss that the type species of Opisthoporus is Cyclostoma taylorianum L. Pfeiffer, 1851 by subsequent designation...
The name Solen scalprum Gould, 1850 is in current use for a widely distributed species of bivalve assigned to the genus Cultellus. The name is a junior primary homonym of Solen scalprum King, 1832. The name Solen scalprum Gould, 1850 should be replaced by its junior synonym Cultellus subellipticus Dunker, 1862.
A new species of the camaenid genus Kenyirus is described from Baling, Kedah, Peninsular Malaysia. Kenyirus balingensis, new species, has a thin subglobose‐trochoidal shell, with a depressed apex. It resembles Kenyirus sheema Foon, Tan & Clements, 2015, in shell shape, but can be distinguished by its much smaller size, proportionately lower spire,...
In an effort to clarify the species diversity of onchidiid slugs, the taxonomy of the genus Onchidium Buchannan, 1800 is revised using an integrative approach. New, fresh specimens were collected in a large number of places, including type localities. The genus Onchidium is redefined here as a clade including only three species which are strongly s...
The ornamental pet trade is often considered a key culprit for conservation problems such as the introduction of invasive species (including infectious diseases) and overharvesting of rare species. Here, we present the first assessment of the biodiversity of freshwater molluscs in the ornamental pet trade in Singapore, one of the most important glo...
Sources of ornamental freshwater molluscs (local ornamental pet retail shops and major ornamental exporters)
(DOCX)
GenBank and BOLD Accession Numbers for COI and 16S sequences of freshwater molluscs of the ornamental pet trade.
(DOCX)
The non‐indigenous Cryptozona siamensis is reported for the first time from Singapore. This terrestrial snail was discovered from the site of a former plant nursery that borders the Central Catchment Nature Reserve, and is believed to have been accidentally introduced through horticultural trade activities. Cryptozona siamensis is a potential plant...
Tropical limestone karsts are regarded as having high conservation value due to their role as refugia for biodiversity and a large number of endemic taxa threatened by human-induced habitat loss such as quarrying, agricultural land conversion and fires. The management and protection of karst biodiversity can best be served through assessment of the...
The apple snails of the genus Pila (Ampullariidae) are the largest freshwater gastropods in Southeast Asia (SEA), and include some of the earliest taxa described from the region; Linnaeus described Pila ampullacea in 1758. Other Pila species have been described from SEA since the 1800s, but their taxonomy remains confused, obscuring the true distri...
Anentome helena (von dem Busch in Philippi, 1847) is known among aquarium enthusiasts as the “assassin snail”, and is usually kept to prey on other snail species that are considered pests in home aquaria. There have been concerns that, given its prevalence in the ornamental pet trade, it is only a matter of time before this predator is introduced t...
Molluscs were collected from 67 sites in the Singapore Strait during the second workshop (20 May–7 June 2013) of the Comprehensive Marine Biodiversity Survey (CMBS) of Singapore. A total of 175 species of shell-bearing gastropods in 52 families was identified. This represented a mean of 6.9 species per site, with species diversities ranging from 1...
The scaphopod family Laevidentaliidae is reviewed in the tenth part of a group‐by‐group treatment of the molluscs of Singapore. Laevidentalium eburneum (Linnaeus, 1767), is the only species recorded thus far.
We describe a new land snail species of the family Camaenidae from the Belum-Temengor Forest Complex in the State of Perak, Peninsular Malaysia. Kenyirus sheema, sp. nov., is compared with its congener Kenyirus sodhii (Clements & Tan, 2012), which shares similar conchological characteristics such as a depressed apex, convex base, sub-triangular per...
The freshwater snail identified as Physastra sumatrana has been recorded in Singapore since the late 1980's. It is distributed throughout the island and commonly associated with ornamental aquatic plants. Although the species has previously been considered by some to be native to Singapore, its origin is currently categorised as unknown. Morphologi...
During recent wildlife surveys on Pulau Tekong, Singapore, opportunities were taken to document the terrestrial malacofauna diversity, which is hitherto unknown. Eleven species were consequently recorded, namely Semperula cf. maculata, Semperula cf. variegatula, Achatina fulica, Subulina octona, Paropeas achatinaceum, Hemiplecta humphreysiana, Sari...
The family Argonautidae is represented in Singapore waters by Argonauta argo and Argonauta hians. The latter species is a new record for Singapore based on a recent discovery of a shell at the Semakau Landfill. Information on the records of both species in Singapore, taxonomic or nomenclatural, and other related notes of interest are provided.
The widespread calyptraeid Crepidula walshi Reeve, 1859, is currently assigned by most authors to the genus Syphopatella Lesson, 1831 (also incorrectly spelt as “Siphopatella”). An analysis of the type species of Syphopatella Lesson, 1831, shows that this species should be assigned to the genus Ergaea H. Adams & A. Adams, 1854, instead. The origina...
Mieniplotia gen. nov. is established for Buccinum scabrum O.F. Müller, 1774, which is currently assigned to the unavailable genus-group name Pseudoplotia Forcart, 1950. Nomenclatural notes on the other genus-group names that Buccinum scabrum has been historically assigned are provided. Mieniplotia gen. nov. currently contains only the type species,...
An annotated checklist of the Mollusca from the Australian Indian Ocean Territories (IOT) of Christmas Island (Indian Ocean) and the Cocos (Keeling) Islands is presented. The checklist combines data from all previous studies and new material collected during the recent Christmas Island Expeditions organised by the Lee Kong Chian Natural History Mus...
This present series of scientific exploration and expeditions was carried out from 2010 to 2012, totalling six and two weeks, and covering 153 and 50 field stations (some repeated) in Christmas Island and Cocos (Keeling) Islands respectively. The expeditions were carried out by a principle team of 11 from Singapore, with participants from Australia...
We report on opportunistic sampling and/or observations of the fauna of five submarine and six associated anchialine caves in Christmas Island conducted over a total of five weeks from 2010 to 2012. The surveys were conducted mainly via hand picking, overturning of coral rubble, baited fish traps (using baitfish and fish food pellets) and with the...
A naturally formed pearl is reported for the first time from Tegillarca granosa, a commonly available shellfish better known by its misnomer “blood cockle” in Singapore and its neighbouring countries. The cause of pearl formation is not known.
The first record of Cerithium scobiniforme Houbrick, 1992, in Singapore is reported based on specimens from Pulau Tekukor and Semakau Landfill. The specimens are herein figured, with diagnosis and notes of interest.
One adult individual of the white shell variety of Amphidromus atricallosus perakensis was found adhering to the underside of a leaf of the invasive tree Acacia mangium. This is probably the first record of an Amphidromus species utilizing an invasive, non-native tree species of the genus Acacia as a habitat.
One adult tree snail Helicarion perfragilis was found crawling on the brim of a hat worn by a human after a walk through the secondary rainforest/scrubland vegetation of Bukit Brown Cemetery, Singapore. This contribution presents a second observation of this accidental behavior in this snail species.
The family Aplustridae, occurring in the waters of Singapore, is reviewed. The family is represented in Singapore waters by Hydatina albocincta and Hydatina zonata. Diagnoses, figures, records, and other information on both species are provided as part of an effort to document the diversity of the malacofauna in Singapore.
A sub-adult arboreal snail Helicarion perfragilis was found crawling on the hair of a human after a hike through a rainforest. The dispersal ability of the snail Helicarion perfragilis and its implications to our understanding of low dispersal organisms were discussed.
The freshwater snails of the family Ampullariidae in Singapore are reviewed. This family is represented in Singapore by Pila ampullacea, Pila scutata, and the introduced Pomacea canaliculata and Pomacea maculata. Pila scutata and Pomacea canaliculata were once the only known Ampullariidae species in Singapore. Here, we discuss in further detail the...
The family Truncatellidae in Singapore is represented by a single species, the widely-distributed Truncatella guerinii. In this review of the family, specimens of Truncatella guerinii from Singapore are figured and a diagnosis is provided to aid identification. Some notes of interest are added for information
The subfamily Planaxinae, of the family Planaxidae, in Singapore is treated here. The subfamily is currently represented in Singapore by two species: Fissilabia decollatus and Planaxis sulcatus. Diagnoses, figures, records, and other information on both species are provided as part of an effort to document the diversity of the malacofauna in Singap...
A sub-adult individual of Hemiplecta humphreysiana Lea 1840 was observed climbing up a large tree trunk to 3.5 m above ground level. This behavior is novel as most Hemiplecta humphreysiana individuals were observed to live under and among fallen logs and leaf litter.
Anthony Curtiss described two species of cephalopod and nine species of gastropod molluscs from Tahiti. Herein, we discuss and determine the identities of these eleven names. Ten of these names are considered to be junior subjective synonyms of well-known taxa, and one an unavailable name.
The family Amathinidae is reviewed in the 4th part of a group-by-group treatment of the molluscs of Singapore. Amathina tricarinata, a gastropod that parasitises other molluscs, is the only species recorded from Singapore in the Amathinidae.
Ten shells of the tree snail Amphidromus atricallosus perakensis Fulton 1901 displaying various breakages were found at the edge of a secondary forest. The shells bear evidence of damage by predatory animals, most likely birds and rodents.