A new species of coral-feeding nudibranch (Mollusca: Gastropoda) from the Gulf of Thailand

Mehrotra, Rahul; Arnold, Spencer; Wang, Adam; Chavanich, Suchana; Hoeksema, Bert W.; Caballer, Manuel

doi:10.1007/s12526-020-01050-2

Cited by 16 publications

(13 citation statements)

References 65 publications

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“…Recent molecular analyses have revealed Phestilla minor to be a complex of up to six distinct species ( Mehrotra et al 2020a ).…”

Section: Resultsmentioning

confidence: 99%

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An updated inventory of sea slugs from Koh Tao, Thailand, with notes on their ecology and a dramatic biodiversity increase for Thai waters

Mehrotra¹,

Gutiérrez²,

Scott³

et al. 2021

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Improved access to field survey infrastructure throughout South-East Asia has allowed for a greater intensity of biodiversity surveys than ever before. The rocky bottoms and coral reef habitats across the region have been shown to support some of the highest sea slug biodiversity on the planet, with ever increasing records. During the past ten years, intensive SCUBA surveys have been carried out at Koh Tao, in the Gulf of Thailand, which have yielded remarkable findings in sea slug biology and ecology. In this work a brief history of sea slug biodiversity research from Thailand is covered and a complete inventory of sea slugs from Koh Tao, Gulf of Thailand is provided. This inventory is based on surveys from 2012 to 2020, with previously unreported findings since 2016. Habitat specificity and species-specific ecology are reported where available with a focused comparison of coral reef habitats and deeper soft-sediment habitats. The findings contribute 90 new species records for Thai waters (92 for the Gulf of Thailand) and report a remarkable consistency in the proportional diversity found to be exclusive to one habitat type or another. Additionally, taxonomic remarks are provided for species documented from Koh Tao that have not been discussed in past literature from Thailand, and a summary of previous records in the Indo-West Pacific is given.

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“…Recent molecular analyses have revealed Phestilla minor to be a complex of up to six distinct species ( Mehrotra et al 2020a ).…”

Section: Resultsmentioning

confidence: 99%

“… Phestilla viei is known from Madagascar, Thailand, Philippines, Indonesia, and Papua New Guinea ( Mehrotra et al 2020a ).…”

Section: Resultsmentioning

confidence: 99%

An updated inventory of sea slugs from Koh Tao, Thailand, with notes on their ecology and a dramatic biodiversity increase for Thai waters

Mehrotra¹,

Gutiérrez²,

Scott³

et al. 2021

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“…Most recently, our fine-scale approach was supported by an independent study of the tropical trinchesiid genus Phestilla (Mehrotra et al, 2020). The review presented here of the genus Cuthonella and the family Cuthonellidae is therefore of high relevance for demonstrating the benefits of this approach, since this is a properly narrow family and genus, whose validity has been confirmed first by using morphological data (Martynov, 1992;Martynov & Korshunova, 2011) then recently by the application of molecular data in Korshunova et al (2018a) and finally by the addition of seven new species and two new subspecies detailed in this study.…”

Section: Taxonomy Of Cuthonella: a Morphological Prediction And Molecmentioning

confidence: 89%

“…A 'superlumping' aggregation of the "family Fionidae sensu latissimo" (Cella et al, 2016;Epstein et al, 2019) lacking morphological apomorphies. C. Modern fine-scale tergipedid taxonomy that integrates molecular data and provides morphological apomorphies for several separate families and genera (Korshunova et al, 2017a, b;2018a,b, 2019aMehrotra et al, 2020). The crossed-out taxon names signify a change in the genus status, the normally displayed names signify valid taxa at every consequential level of the history of the taxonomy of this group.…”

Section: Taxonomy Of Cuthonella: a Morphological Prediction And Molecmentioning

confidence: 99%

Biodiversity hotspot in cold waters: a review of the genus Cuthonella with descriptions of seven new species (Mollusca, Nudibranchia)

Korshunova

Sanamyan

et al. 2020

Contrib. Zool.

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Cuthonella Bergh, 1884 is of one of the most neglected nudibranch groups, with a long history of taxonomic confusion with other aeolidacean genera. Owing to its predominantly Arctic distribution with cold water, its species are difficult to find and to collect, and thus to describe. In this study we revise the genus by presenting molecular and morphological data for a majority of the species, including the type, C. abyssicola Bergh, 1884. The material is based on a broad geographic sampling throughout the Northern Hemisphere. Particular emphasis is placed on the Kuril Islands, a diversity hotspot for the genus. Seven new species and two subspecies of Cuthonella are described from the Arctic and North Pacific regions. The number of species of Cuthonella is thus increased over threefold and now comprises 15 species plus two subspecies instead of five species. This work is the most substantial update of the genus Cuthonella since its description in 1884. To delineate taxonomic and phylogenetic limits of Cuthonella-like aeolidaceans, the molecular phylogeny of the wider traditional “tergipedids” is presented and shows that Cuthonella-like aeolidaceans form a distinct molecular clade as the family Cuthonellidae Miller, 1977, corroborated by reliable morphological apomorphies.

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“…Primer sequences for partial sequences of cytochrome c oxidase subunit I ( COI ) were sourced from Folmer et al (1994) using pairs LCO1490 (5’-GGTCAACAAATCATAAAGATATTGG-3’) and HC02198 (5’-TAAACTTCAGGGTGACCAAAAAATCA-3’). Partial sequences of the 16S rRNA region were amplified using the forward primer 16Sar-L (5’-CGCCTGTTTATCAAAAACAT-3’) from Palumbi et al (1991) and reverse primer 16s-xH (5’-CCGGTYTGAAMYYAGATCACGTAGG3’) from Mehrotra et al (2020) . Primers for the Histone 3 region were taken from Colgan et al (2000) using the primers H3F (5’-ATGGCTCGTACCAAGCAGACVGC-3’) and H3R (5’-ATATCCTTRGGCATRATRGTGAC-3’).…”

Section: Methodsmentioning

confidence: 99%

On the Plakobranchidae (Gastropoda, Sacoglossa) from soft sediment habitats of Koh Tao, Gulf of Thailand, with descriptions of two new species

Mehrotra¹,

Gutiérrez²,

Scott³

et al. 2020

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Research in recent years have provided rapid advances in biogeographic and taxonomic documentation of sea slugs around the world. However, efforts are lacking in surveying most coastlines and habitats in South-East Asia. Recent studies from the Gulf of Thailand have indicated that a wealth of unexplored sea slug diversity and ecology may be gained from an investigation of soft sediment habitats beyond the reef slopes. Additionally, the waters of Koh Tao have been found to host regionally high levels of sea slug diversity with several species awaiting taxonomic clarification. In this work the initial findings of an expanded survey effort from the waters around Koh Tao are provided, with the identity of two soft sediment-associated sacoglossan species in the family Plakobranchidae being investigated. By integrating morphological and molecular analyses, the species Plakobranchus noctisstellatussp. nov. and Elysia aowthaisp. nov. are described and species complexes surrounding Plakobranchus ocellatus van Hasselt, 1824 and Elysia japonica Eliot, 1913 are discussed. The topics of morphological variability and the cryptic species problem are also discussed.

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A new species of coral-feeding nudibranch (Mollusca: Gastropoda) from the Gulf of Thailand

Cited by 16 publications

References 65 publications

An updated inventory of sea slugs from Koh Tao, Thailand, with notes on their ecology and a dramatic biodiversity increase for Thai waters

An updated inventory of sea slugs from Koh Tao, Thailand, with notes on their ecology and a dramatic biodiversity increase for Thai waters

Biodiversity hotspot in cold waters: a review of the genus Cuthonella with descriptions of seven new species (Mollusca, Nudibranchia)

On the Plakobranchidae (Gastropoda, Sacoglossa) from soft sediment habitats of Koh Tao, Gulf of Thailand, with descriptions of two new species

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