Systematics of the onchidiid slug Onchidina australis (Mollusca: Gastropoda: Pulmonata)

Dayrat, Benoı̂t; Goulding, Tricia C.

doi:10.1127/arch.moll/146/121-133

Cited by 8 publications

(21 citation statements)

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“…All analyses were run several times and yielded the same result. Ten other onchidiid species and their corresponding sequences were selected from previous studies from our lab as out-groups (Dayrat et al 2011, 2016, 2017; Dayrat and Goulding 2017): Onchidella floridana (Dall, 1885), Onchidella celtica (Cuvier in Audouin and Milne-Edwards, 1832), Onchidella patelloide (Quoy & Gaimard, 1832), Onchidina australis (Semper, 1880), Platevindex luteum (Semper, 1880), Peronina tenera (Stoliczka, 1869), Peronia sp. (Okinawa), Peronia sp.…”

Section: Methodsmentioning

confidence: 99%

“…Three of these names are transferred to Wallaconchis here ( O. ovale , O. buetschlii , and O. nangkauriense ). Onchidium chameleon belongs to the genus Onchidina Semper, 1882 (Dayrat and Goulding 2017). Onchidium palaense and O. papuanum are poorly known because their type material is lost.…”

Section: Systematics and Anatomical Descriptionsmentioning

confidence: 99%

“…A few years later, Labbé (1934) created the genus name Paraoncidium for eleven Onchidium species with no accessory penial gland, including the six aforementioned species considered morphologically similar by Hoffmann (1928). However, P. chameleon , the type species of Paraoncidium , belongs to the genus Onchidina and Paraoncidium is a junior synonym of Onchidina (Dayrat and Goulding 2017). The genus Onchidina , which so far is monotypic, differs greatly from Wallaconchis (e.g., dorsal eyes absent, male aperture on right lateral side of right ocular tentacle, rectal gland present).…”

Section: Systematics and Anatomical Descriptionsmentioning

confidence: 99%

“…Labbé moved O. keiense to his genus Paraoncidium Labbé, 1934, which he created for a series of Onchidium species with no accessory gland and no rectal gland, but he did not examine any new material for O. keiense . Note that Paraoncidium is a junior synonym of Onchidina (Dayrat and Goulding 2017). …”

Section: Systematics and Anatomical Descriptionsmentioning

confidence: 99%

“…An important component of integrative taxonomy is sound nomenclature; this revision has required the examination of the type material of all onchidiid species, the detailed analysis of all species descriptions, and the re-evaluation of the nomenclatural status of every genus- and species-group name. First, monophyletic genera had to be delineated, and now each genus is being revised separately (Dayrat et al 2016, 2017; Dayrat and Goulding 2017; Goulding et al in press). …”

Section: Introductionmentioning

confidence: 99%

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Integrative taxonomy of a new and highly-diverse genus of onchidiid slugs from the Coral Triangle (Gastropoda, Pulmonata, Onchidiidae)

Goulding¹,

Khalil²,

Tan³

et al. 2018

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A new genus of onchidiid slugs, Wallaconchis Goulding & Dayrat, gen. n., is described, including ten species. Five species were previously described but known only from the type material: Wallaconchis ater (Lesson, 1830), W. graniferum (Semper, 1880), W. nangkauriense (Plate, 1893), W. buetschlii (Stantschinsky, 1907), and W. gracile (Stantschinsky, 1907), all of which were originally classified in Onchidium Buchannan, 1800. Many new records are provided for these five species, which greatly expand their known geographic distributions. Five species are new: Wallaconchis achleitneri Goulding, sp. n., W. comendadori Goulding & Dayrat, sp. n., W. melanesiensis Goulding & Dayrat, sp. n., W. sinanui Goulding & Dayrat, sp. n., and W. uncinus Goulding & Dayrat, sp. n. Nine of the ten Wallaconchis species are found in the Coral Triangle (eastern Indonesia and the Philippines). Sympatry is high, with up to six species found on the island of Bohol (Philippines) and eight species overlapping in northern Sulawesi (Indonesia). Wallaconchis is distinguished from other onchidiids by its bright dorsal colors (red, yellow, orange) but those are extremely variable and not useful for specific identification. Internally, the reproductive system can be used to identify all Wallaconchis species. The copulatory organs of Wallaconchis species are especially diverse compared to other onchidiid genera, and the possible role of reproductive incompatibility in species diversification is discussed. All specimens examined were freshly collected for the purpose of a worldwide revision of the Onchidiidae Rafinesque, 1815. The species are well delineated using DNA sequences and comparative anatomy. Mitochondrial DNA analysis yields thirteen molecular units separated by a large barcode gap, while nuclear DNA yields nine units. By integrating nuclear DNA and mitochondrial DNA with morphology, ten species are recognized. The natural history of each species (e.g., the microhabitat where they are found) is also documented. Nomenclature is addressed thoroughly (the types of all onchidiid species were examined, lectotypes were designated when needed, nomina dubia are discussed). Morphological characters, transitions to new microhabitats, and diversification processes are discussed in the context of a robust molecular phylogeny.

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Section: Methodsmentioning

confidence: 99%

Section: Systematics and Anatomical Descriptionsmentioning

confidence: 99%

Section: Systematics and Anatomical Descriptionsmentioning

confidence: 99%

Section: Systematics and Anatomical Descriptionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Integrative taxonomy of a new and highly-diverse genus of onchidiid slugs from the Coral Triangle (Gastropoda, Pulmonata, Onchidiidae)

Goulding¹,

Khalil²,

Tan³

et al. 2018

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The Coral Triangle and Strait of Malacca are two distinct hotspots of mangrove biodiversity

Goulding,

Dayrat

2023

Sci Rep

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Knowledge of the biogeography of marine taxa has lagged significantly behind terrestrial ecosystems. A hotspot of marine biodiversity associated with coral reefs is known in the Coral Triangle of the Indo-West Pacific, but until now there was little data with which to evaluate broad patterns of species richness in the coastal fauna of ecosystems other than coral reefs. This data is critically needed for fauna with low functional redundancy like that of mangroves, that are vulnerable to habitat loss and rising sea levels. Here we show that the diversity of mangrove fauna is characterized by two distinct hotspots in the Indo-West Pacific, associated with two habitat types: fringe mangroves in the Coral Triangle, and riverine mangroves in the Strait of Malacca, between the west coast of Peninsular Malaysia and Sumatra. This finding, based on a family of slugs of which the systematics has been completely revised, illustrates an unexpected biogeographic pattern that emerged only after this taxon was studied intensively. Most organisms that live in the mangrove forests of Southeast Asia remain poorly known both taxonomically and ecologically, and the hotspot of diversity of onchidiid slugs in the riverine mangroves of the Strait of Malacca indicates that further biodiversity studies are needed to support effective conservation of mangrove biodiversity.

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A revision of Peronina Plate, 1893 (Gastropoda : Euthyneura : Onchidiidae) based on mitochondrial and nuclear DNA sequences, morphology and natural history

Goulding

Tan

et al. 2018

Invert. Systematics

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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 Plate, 1893, from eastern India. Onchidium tenerum Stoliczka, 1869 is moved to Peronina and applies to the same species as Peronina alta. Peronina species are described using an integrative approach (natural history, comparative anatomy and DNA sequences). Mitochondrial COI and 16S sequences and nuclear ITS2 and 28S sequences are used to independently test species boundaries. Mitochondrial sequences yielded three units separated by a large barcode gap, but nuclear sequences yielded two units. Because these two units are congruent with differences in the male copulatory apparatus, they are accepted as species. Explanations for highly divergent COI haplotypes within one species are discussed. Peronina tenera (Stoliczka, 1869) is distributed in the Bay of Bengal and the Strait of Malacca, while P. zulfigari Goulding & Dayrat, sp. nov. is endemic to the Strait of Malacca. The two species differ internally but are cryptic externally.

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Systematics of the onchidiid slug Onchidina australis (Mollusca: Gastropoda: Pulmonata)

Cited by 8 publications

References 0 publications

Integrative taxonomy of a new and highly-diverse genus of onchidiid slugs from the Coral Triangle (Gastropoda, Pulmonata, Onchidiidae)

Integrative taxonomy of a new and highly-diverse genus of onchidiid slugs from the Coral Triangle (Gastropoda, Pulmonata, Onchidiidae)

The Coral Triangle and Strait of Malacca are two distinct hotspots of mangrove biodiversity

A revision of Peronina Plate, 1893 (Gastropoda : Euthyneura : Onchidiidae) based on mitochondrial and nuclear DNA sequences, morphology and natural history

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