Phylogenetic and geographic variation of northern Australian sympatric lineages of<i>Treptopale homalos</i>and<i>T. paromolos</i>(Annelida: Phyllodocida: Chrysopetalidae) using mitochondrial and nuclear sequences

Wei, Nu-Wei V.; Watson, C. Scott; Gibb, Karen S.

doi:10.1080/17451000.2013.765578

Cited by 11 publications

(5 citation statements)

References 21 publications

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“…13) and the lack of additional genes for three of the Hyalopale species included here (Table 1) precludes any strong conclusions. based on their similar anterior end configurations and chaetal types (Perkins 1985;Watson 2010;Watson 2015;Watson & Faulwetter 2017); a molecular study also corroborated a very close relationship between Treptopale and Paleanotus (Wei et al 2013). Buccal structures, internal pigmentation and gamete characters are considered in more detail here.…”

Section: Discussionsupporting

confidence: 58%

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Revision of Hyalopale (Chrysopetalidae; Phyllodocida; Annelida): an amphi-Atlantic Hyalopale bispinosa species complex and five new species from reefs of the Caribbean Sea and Indo-Pacific Oceans

Watson¹,

Ekin

Rouse

2019

Zootaxa

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1,078

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The formerly monotypic taxon, Hyalopale bispinosa Perkins 1985 (Chrysopetalinae), is comprised of a cryptic species complex from predominantly tropical embayments and island reefs of the Western Atlantic and Indo-Pacific Oceans. Hyalopale species are of meiofaunal size (length: 1−2.8mm), but considered non-interstitial, with the majority of species inhabiting a singular habitat of shallow littoral zones among algae and epifauna overlying sediments in rubble. Hyalopale adults exhibit notochaetal fans characterized by the presence of lateral and midline notochaetal spines. Species of Hyalopale can be distinguished by the shape of glass-like notochaetal paleae and the number of densely stacked ribs. Hyalopale bispinosa forms a western and eastern Atlantic species complex, comprising the type species, Hyalopale bispinosa s.s., a comparatively larger form with the highest number of notochaetal paleael ribs from Florida, and Hyalopale cf. bispinosa, from the western and eastern Mediterranean, a smaller form with a similar notochaetal morphology to the latter. Unfortunately, no molecular sequence data is available for Hyalopale bispinosa s.s. Five new species are described, with molecular sequence data provided for three: Hyalopale leslieae sp. nov., a small form with a comparatively low number of paleal ribs, found from the Florida Keys to Belize, Caribbean Sea, H. zerofskii sp. nov. from southern California and Mexico, eastern Pacific and H. sapphiriglancyorum sp. nov., a distinctive species with the lowest number of paleael ribs, from Raja Ampat, Indonesia and the Great Barrier Reef, Queensland, western Pacific. Two other species are described from morphology alone: H. angeliensis sp. nov. from Dampier, Western Australia and Seychelle Islands, eastern Indian Ocean and H. furfuricula sp. nov. from the Red Sea and Mozambique, western Indian Ocean, possessing a unique paleal brow shape. While well supported as a clade, support for relationships within Hyalopale is low. Hyalopale cf. bispinosa (Mediterranean) was recovered as sister group to the remaining Hyalopale, with H. leslieae sp. nov. as sister to the Hyalopale Pacific clade, comprising H. zerofskii sp. nov. (eastern Pacific) and H. sapphiriglancyorum sp. nov. (western Pacific). Within Chrysopetalinae, Hyalopale and Paleanotus formed a clade that was the sister group to the other paleate chrysopetalids under maximum likelihood, though Paleanotus grouped with the other paleate forms under maximum parsimony. The adult morphology of Hyalopale species is compared with that exhibited in the larvae of Paleanotus species; based on these results, including possession of a shared notochaetal character, Hyalopale is considered to contain paedomorphic taxa.

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Section: Discussionsupporting

confidence: 58%

“…While there are differences in the numbers of ribs and presence/absence of a midline spine, the similarities indicate these may be sister species. This northern Australia sibling species divide has been documented in a number of related chrysopetalid taxa e.g., Paleanotus (Watson 2015) and Treptopale (Watson 2010;Wei et al 2013).…”

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confidence: 82%

Revision of Hyalopale (Chrysopetalidae; Phyllodocida; Annelida): an amphi-Atlantic Hyalopale bispinosa species complex and five new species from reefs of the Caribbean Sea and Indo-Pacific Oceans

Watson¹,

Ekin

Rouse

2019

Zootaxa

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1,078

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“…Within the eight chrysopetalid genera known in the GBR, six comprise cryptic species complexes i.e. morphological differences are difficult to see between species with only minor shape differences, numbers of paleal types or ribs or no observable charcters present (e.g., Arichlidon: Watson Russell 1998; Treptopale: Watson 2010; Wei et al 2013).…”

Section: Discussionmentioning

confidence: 99%

Seven new species of Paleanotus (Annelida: Chrysopetalidae) described from Lizard Island, Great Barrier Reef, and coral reefs of northern Australia and the Indo-Pacific: two cryptic species pairs revealed between western Pacific Ocean and the eastern Indian Ocean

Watson¹

2015

Zootaxa

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Morphological investigation into the paleate genus Paleanotus Schmarda 1861 of the family Chrysopetalidae from northern Australian coral reefs, primarily Lizard Island and outlying reefs, included a complex of very small, slender individuals (length < 5 mm). This complex resolved into 7 new species, described herein: Paleanotus inornatus n. sp., P. adornatus n. sp., P. chrysos n. sp., P. aquifolia n. sp., P. latifolia n. sp., P. silus n. sp., and P. silopsis n. sp. A key is provided to the new species and Paleanotus distinguished from Treptopale and Hyalopale, two closely related genera. Diagnostic features of the apical structure and shape of the notochaetal main paleae plus median paleae shape and raised rib pattern, differentiates each species from the other. Gametous states are described. Two cryptic species pairs (Paleanotus silopsis n. sp. and P. silus n. sp.; Paleanotus aquifolia n. sp. and P. latifolia n. sp.) were identified. In each case one species is restricted to either the NE or NW Australian coast. In each pair the most eastern point for the NW Australian species range occurs at Darwin, western Arnhemland, Northern Territory. Additional material for each species pair extends their respective ranges northwards: NW Australia to Thailand, Andaman Sea, eastern Indian Ocean or NE Australia, Great Barrier Reef to the Philippines, western Pacific Ocean. Cryptic morphology and potential genetic diversity is discussed in Paleanotus inornatus n. sp. and P. adornatus n. sp. that possess overlapping widespread distribution patterns across northern Australia and Indo-Pacific reefs. The smallest bodied taxon, Paleanotus chrysos n. sp. is the only species with a Coral Sea range encompassing Lizard Island, Heron Island and New Caledonia.

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“…Cryptic speciation in annelids, with little or no discernable morphological differences, is being demonstrated by molecular sequence data with increasing frequency (e.g. Borda et al ., ; Stiller et al ., ; Wei, Watson & Gibb, ). Conversely, markedly different morphologies and a lack of rigorous systematics have sometimes resulted in different families being established that have later been collapsed into a single taxon following molecular systematics; Chrysopetalidae is a case in point (Aguado, Nygren & Rouse, ).…”

Section: Introductionmentioning

confidence: 99%

Free-living calamyzin chrysopetalids (Annelida) from methane seeps, anoxic basins, and whale falls

Watson¹,

Carvajal

Сергеева

et al. 2016

Zool J Linn Soc

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Members of Calamyzinae, a clade of free-living and ectoparasitic chrysopetalids, are mainly associated with deepsea chemosynthetic environments. The three currently known free-living calamyzin species are placed in Vigtorniella. A new free-living calamyzin species similar to these is described here. Phylogenetic analyses of Calamyzinae using mitochondrial (cytochrome c oxidase subunit I and 16S rDNA) and nuclear (Histone H3 and 18S rDNA) loci showed that Vigtorniella and the new species form a grade with respect to an ectoparasitic clade, requiring two new genera to be erected. All free-living calamyzins show a similar anterior end and chaetal morphology. Micospina auribohnorum gen. et sp. nov. is described for the small-bodied new species from deep-sea whale falls off California and methane seeps off Costa Rica. The maximum-likelihood and Bayesian analyses show Micospina gen. nov. as sister to the ectoparasitic clade. Boudemos gen. nov. is named for the clade of two larger-bodied species: Boudemos flokati gen. et comb. nov. and Boudemos ardabilia gen. et comb. nov., which is sister group to all other Calamyzinae. Vigtorniella is retained for the type species, Vigtorniella zaikai (Kiseleva, 1992), with the adults found amongst bacterial mats at the boundary of the hydrogen sulphide zone in the Black Sea. Micospina gen. nov., Boudemos gen. nov., and Vigtorniella form a grade of free-living taxa that is associated with feeding on organic-enriched sediments, and the latter two taxa display ontogenetic jaw change. Jaws are absent in Micospina auribohnorum gen. et sp. nov. and most of the calamyzin clade of parasitic forms.

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Phylogenetic and geographic variation of northern Australian sympatric lineages ofTreptopale homalosandT. paromolos(Annelida: Phyllodocida: Chrysopetalidae) using mitochondrial and nuclear sequences

Cited by 11 publications

References 21 publications

Revision of Hyalopale (Chrysopetalidae; Phyllodocida; Annelida): an amphi-Atlantic Hyalopale bispinosa species complex and five new species from reefs of the Caribbean Sea and Indo-Pacific Oceans

Revision of Hyalopale (Chrysopetalidae; Phyllodocida; Annelida): an amphi-Atlantic Hyalopale bispinosa species complex and five new species from reefs of the Caribbean Sea and Indo-Pacific Oceans

Seven new species of Paleanotus (Annelida: Chrysopetalidae) described from Lizard Island, Great Barrier Reef, and coral reefs of northern Australia and the Indo-Pacific: two cryptic species pairs revealed between western Pacific Ocean and the eastern Indian Ocean

Free-living calamyzin chrysopetalids (Annelida) from methane seeps, anoxic basins, and whale falls

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