A checklist of land snails from the west coast islands of Sabah, Borneo (Mollusca, Gastropoda)

Phung, Chee-Chean; Yu, Fred Tuh Yit; Liew, Thor‐Seng

doi:10.3897/zookeys.673.12422

Cited by 15 publications

(13 citation statements)

References 27 publications

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“…Known only from the type locality, Teck Guan Estate, Lahad Datu, Sabah, and also reported by Phung et al (2017) at Pulau Tiga, Sandakan, Sabah. However, this may also refer to one of the other “scaly group” species from Sabah.…”

Section: Taxonomymentioning

confidence: 83%

“…Otherwise known from limestone outcrops in Sabah’s interior, viz., Simbaluyon, Sinobang, Sanaron, and Pungiton, and also has been recorded from Mahua, Sabah, which is not a limestone area. Phung et al (2017) also report it from Pulau Tiga, Sabah.…”

Section: Taxonomymentioning

confidence: 85%

“… Georissa scalinella (van Benthem-Jutting): Thompson and Dance 1983: 119; Phung et al 2017: 68, fig. 8B.…”

Section: Taxonomymentioning

confidence: 99%

“…29, 53–54; Haase and Schilthuizen 2007: 217, fig. 2; Clements 2008: 2762; Schilthuizen et al 2012: 278; Beron 2015: 181; Phung et al 2017: 68, fig. 8; Osikowski et al 2017: 80.…”

Section: Taxonomyunclassified

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A molecular and conchological dissection of the “scaly” Georissa of Malaysian Borneo (Gastropoda, Neritimorpha, Hydrocenidae)

Khalik¹,

Hendriks²,

Vermeulen³

2018

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The Bornean hydrocenids have so far been understudied compared to other non-pulmonate snails in this region. In the present study, we review a first group of minute land snail species belonging to the genus Georissa (Gastropoda, Hydrocenidae) from Malaysian Borneo. This group is restricted to the species with conspicuous scale-like sculpture on the shell. Based on materials from recent fieldwork, museums, and personal collections, Malaysian Borneo hydrocenids are more complex and diverse in shell characters than previously anticipated. Here, a molecular, conchological, and biogeographic study of this “scaly group” is presented. We recognise 13 species of which six are new to science, namely Georissa anyiensis sp. n., Georissa muluensis sp. n., Georissa bauensis sp. n., Georissa silaburensis sp. n., Georissa kinabatanganensis sp. n., and Georissa sepulutensis sp. n.

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Section: Taxonomymentioning

confidence: 83%

Section: Taxonomymentioning

confidence: 85%

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A molecular and conchological dissection of the “scaly” Georissa of Malaysian Borneo (Gastropoda, Neritimorpha, Hydrocenidae)

Khalik¹,

Hendriks²,

Vermeulen³

2018

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“…Although Sabah has the highest number of islands in Malaysia, leaf beetle species diversity on islands has been little explored. In view of the fact that island habitats are generally known to have high species endemism (Kier et al, 2009), and that many of the islands on the west coast of Sabah are experiencing a rapid growth in tourism and economic development (Phung, Yu & Liew, 2017), it is important to document leaf beetle species diversity now to obtain baseline biodiversity knowledge.…”

Section: Introductionmentioning

confidence: 99%

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Supplemental Information 3: Interspecific Distance

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Sabah, northern Borneo is one of the world's most well-recognized biodiversity hotspots famous for the incredible diversity of its flora and fauna. Plenty of studies of leaf beetle fauna from this region have been conducted over the past 30 years. Yet, our knowledge of the leaf beetle fauna from island habitats remains scarce despite Sabah having the highest number of islands in Malaysia (ca. 500 islands). In this study, we collected leaf beetle fauna from 13 islands off the west coast of Sabah between January 2016 and March 2017. All specimens were identified to species level. Species names were assigned when the specimens fitted the description of species in the literature and morpho-species were assigned when the species names could not be determined. In addition, DNA barcodesmitochondarial COI gene-of the species were sequenced. A total of 68 species from 31 genera and 5 subfamilies were collected with 12 species name being determined. From the data it was established that Pulau Gaya has the highest species richness (42 species), followed by Pulau Tiga (22 species) and Pulau Sapangar (18 species). Furthermore, a total of 64 Barcode Index Numbers consisting of 101 DNA barcodes were obtained from 60 leaf beetle species. The mean intraspecific and interspecific distances were determined as 0.77 % and 16.11 %, respectively. In addition, DNA barcoding also reveals phenotypic variation in leaf beetle species, particularly in the case of the subfamily Galerucinae. This study provides baseline knowledge and information about the DNA barcodes of leaf beetle species on Sabah's island habitats for use in future studies.

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Negative impacts of invasive predators used as biological control agents against the pest snail Lissachatina fulica: the snail Euglandina ‘rosea’ and the flatworm Platydemus manokwari

Gerlach¹,

Barker

Bick

et al. 2020

Biol Invasions

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Since 1955 snails of the Euglandina rosea species complex and Platydemus manokwari flatworms were widely introduced in attempted biological control of giant African snails (Lissachatina fulica) but have been implicated in the mass extinction of Pacific island snails. We review the histories of the 60 introductions and their impacts on L. fulica and native snails. Since 1993 there have been unofficial releases of Euglandina within island groups. Only three official P. manokwari releases took place, but new populations are being recorded at an increasing rate, probably because of accidental introduction. Claims that these predators controlled L. fulica cannot be substantiated; in some cases pest snail declines coincided with predator arrival but concomitant declines occurred elsewhere in the absence of the predator and the declines in some cases were only temporary. In the Hawaiian Islands, although there had been some earlier declines of native snails, the Euglandina impacts on native snails are clear with rapid decline of many endemic Hawaiian Achatinellinae following predator arrival. In the Society Islands, Partulidae tree snail populations remained stable until Euglandina introduction, when declines were extremely rapid with an exact correspondence between predator arrival and tree snail decline. Platydemus manokwari invasion coincides with native snail declines on some islands, notably the Ogasawara Islands of Japan, and its invasion of Florida has led to mass mortality of Liguus spp. tree snails. We conclude that Euglandina and P. manokwari are not effective biocontrol agents, but do have major negative effects on native snail faunas. These predatory snails and flatworms are generalist predators and as such are not suitable for biological control.

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A checklist of land snails from the west coast islands of Sabah, Borneo (Mollusca, Gastropoda)

Cited by 15 publications

References 27 publications

A molecular and conchological dissection of the “scaly” Georissa of Malaysian Borneo (Gastropoda, Neritimorpha, Hydrocenidae)

A molecular and conchological dissection of the “scaly” Georissa of Malaysian Borneo (Gastropoda, Neritimorpha, Hydrocenidae)

Untitled

Negative impacts of invasive predators used as biological control agents against the pest snail Lissachatina fulica: the snail Euglandina ‘rosea’ and the flatworm Platydemus manokwari

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