Taxonomic revision of Coralliidae with descriptions of new species from New Caledonia and the Hawaiian Archipelago

Tu, Tzu-Hsuan; Dai, Chang‐Feng; Jeng, Ming-Shiou

doi:10.1080/17451000.2016.1241411

Cited by 9 publications

(14 citation statements)

References 21 publications

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“…A significant number of collections were also made in the enigmatic octocoral families Plexauridae and Isididae but detailed morphological taxonomic keys for these families in the central and south Pacific are incomplete and require further attention. Recent efforts to revise the taxonomy of families and genera within the Octocorallia have provided significant contributions to our knowledge of deep-water coral diversity in the Pacific Ocean (Tu et al, 2016;Moore et al, 2017;Cairns, 2018). It is likely that as these specimens are more widely scrutinized using both molecular and morphological taxonomic tools, more species identifications can be determined.…”

Section: Noteworthy Observationsmentioning

confidence: 99%

Oceanographic Drivers of Deep-Sea Coral Species Distribution and Community Assembly on Seamounts, Islands, Atolls, and Reefs Within the Phoenix Islands Protected Area

et al. 2020

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The Phoenix Islands Protected Area, in the central Pacific waters of the Republic of Kiribati, is a model for large marine protected area (MPA) development and maintenance, but baseline records of the protected biodiversity in its largest environment, the deep sea (>200 m), have not yet been determined. In general, the equatorial central Pacific lacks biogeographic perspective on deep-sea benthic communities compared to more well-studied regions of the North and South Pacific Ocean. In 2017, explorations by the NOAA ship Okeanos Explorer and R/V Falkor were among the first to document the diversity and distribution of deep-water benthic megafauna on numerous seamounts, islands, shallow coral reef banks, and atolls in the region. Here, we present baseline deep-sea coral species distribution and community assembly patterns within the Scleractinia, Octocorallia, Antipatharia, and Zoantharia with respect to different seafloor features and abiotic environmental variables across bathyal depths (200-2500 m). Remotely operated vehicle (ROV) transects were performed on 17 features throughout the Phoenix Islands and Tokelau Ridge Seamounts resulting in the observation of 12,828 deep-water corals and 167 identifiable morphospecies. Anthozoan assemblages were largely octocoral-dominated consisting of 78% of all observations with seamounts having a greater number of observed morphospecies compared to other feature types. Overlying water masses were observed to have significant effects on community assembly across bathyal depths. Revised species inventories further suggest that the protected area it is an area of biogeographic overlap for Pacific deep-water corals, containing species observed across bathyal provinces in the North Pacific, Southwest Pacific, and Western Pacific. These results underscore significant geographic and environmental complexity associated with deep-sea coral communities that remain in under-characterized in the equatorial central Pacific, but also highlight the additional efforts that need to be brought forth to effectively establish baseline ecological metrics in data deficient bathyal provinces.

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Section: Noteworthy Observationsmentioning

confidence: 99%

Oceanographic Drivers of Deep-Sea Coral Species Distribution and Community Assembly on Seamounts, Islands, Atolls, and Reefs Within the Phoenix Islands Protected Area

et al. 2020

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“…A number of species in the genus Corallium have recently been transferred to the genus Hemicorallium (encompassing species discussed here; Cordeiro et al 2019); this is based on the work of Tu et al (2015a, b, 2016). Species in the genus Hemicorallium are represented in the SBMNH collection by a single specimen, SBMNH 471940 (likely Hemicoralliumducale ; see Appendix 1: List of material examined), but three species have been recorded (collected west of the California Channel Islands), in proximity to the western boundary edge of the Bight (location data for specimens housed at NMNH).…”

Section: Systematic Accountsmentioning

confidence: 99%

“…The work by Tu et al (2015a, b; 2016) resulted in most species of Corallium being placed in the genus Hemicorallium . WoRMS (Cordeiro et al 2019) confirms the placement of the species discussed here: H.ducale , H.imperiale , H.regale (as well as H.laauense ); all are listed as accepted, separate species.…”

Section: Systematic Accountsmentioning

confidence: 99%

A review of gorgonian coral species (Cnidaria, Octocorallia, Alcyonacea) held in the Santa Barbara Museum of Natural History research collection: focus on species from Scleraxonia, Holaxonia, and Calcaxonia – Part I: Introduction, species of Scleraxonia and Holaxonia (Family Acanthogorgiidae)

Horvath¹

2019

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Gorgonian specimens collected from the California Bight (northeastern Pacific Ocean) and adjacent areas held in the collection of the Santa Barbara Museum of Natural History (SBMNH) were reviewed and evaluated for species identification; much of this material is of historic significance as a large percentage of the specimens were collected by the Allan Hancock Foundation (AHF) ‘Velero’ Expeditions of 1931–1941 and 1948–1985. Examination and reorganization of this collection began early in 2002; initially, it was estimated that at most, twelve to fifteen species of gorgonian could be found within the Bight. Following collection evaluation, it was determined that at a minimum, approximately twenty three genera, encompassing some forty-plus species, of gorgonian coral have been found living within the California Bight region, often extending some distance into adjacent geographical areas both north and south. All species from the California Bight in the collection are discussed to some degree (in three separate parts, this being Part I), with digital images of both colony form and sclerite composition provided for most. Collection specimens from the suborders and families covered in Part I are not extensive, but several genera are featured that have not been previously reported for the California Bight region. Additionally, a potential new species (genusSibogagorgiaStiasny, 1937) from the Paragorgiidae is described in Part I. Overall, the collection displays an emphasis on species belonging to the Holaxonia, particularly the plexaurids. A brief discussion of a California Bight grouping, referred to as the “red whips,” is presented in Part II; this grouping encompasses several species with very similar colony appearance across a number of genera. A new species (a whip or thread-like form) in the genusEugorgiaVerrill, 1868, belonging to the Gorgoniidae, is described in Part II. The genusSwiftiaDuchassaing & Michelotti, 1864 is one of the most challenging taxon groups represented; those species in the genusSwiftiacollected within the California Bight are discussed fully, based on SBMNH (and other) specimens in Part III. Scanning electron microscopy images for species ofSwiftiafrom the California coast have rarely, if ever, been published and are included, with a discussion of the geographic range of the genus in the eastern Pacific, from the southern boundary of the California Bight to the Bering Sea, Alaska. Finally, specimens of the genusTheseaDuchassaing & Michelotti, 1860, displaying a whip or thread-like body form, are discussed at a preliminary level in Part III; they also presented challenges to a clear understanding of their taxonomy. While Part I focuses on species of Scleraxonia and those of the Holaxonia in the Acanthogorgiidae family held in the SBMNH collection, all three parts taken together represent the first comprehensive work that reviews the research collection of SBMNH, which focuses on species of gorgonian coral known to inhabit the California Bight.

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“…Tu et al (2015b) revised the three genera of Coralliidae: Corallium (having strong longitudinally grooved axes with pits usually raindrop-shaped especially near branch tips), Hemicorallium (having tentacles with long rod sclerites, cylindrical autozooid mounds and smooth axes) and Pleurocorallium (having hemispherical autozooid mounds and axes without raindrop-shaped pits). Recently, Tu et al (2016) described one new species from Hawaii and four from New Caledonia, and suggested Pleurocorallium kishinouyei (Bayer, 1996) was a junior synonym of P. porcellanum. They concluded that there were 7 species in the genus Corallium, 18 species in Hemicorallium and 17 species in Pleurocorallium, for a total of 42 species in the family Coralliidae (Tu et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Tu et al (2016) described one new species from Hawaii and four from New Caledonia, and suggested Pleurocorallium kishinouyei (Bayer, 1996) was a junior synonym of P. porcellanum. They concluded that there were 7 species in the genus Corallium, 18 species in Hemicorallium and 17 species in Pleurocorallium, for a total of 42 species in the family Coralliidae (Tu et al 2016).…”

Section: Introductionmentioning

confidence: 99%

A Report on Coralliidae (Cnidaria: Octocorallia) Specimens Collected from the Emperor Seamounts with Descriptions of Three New Species

Nonaka

Hayashibara

2021

Spec.Div.

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Investigations were carried out on 22 deep-water octocoral specimens in the family Coralliidae sampled from the Emperor Seamounts during 2009 to 2012. The specimens were collected from 350-1100 m deep, mostly from the southernmost region of the Emperor Seamounts. Colonies were identified by visual and microscopic observation of standard morphological characters (colony size, diameters of colony base and branches, diameter and height of autozooid mound, thickness of coenenchyme and sclerite sizes, etc.) along with supporting information from molecular DNA analysis. Half of the 22 specimens were identified as Pleurocorallium cf. pusillum (Kishinouye, 1903), suggesting that the species called "Mid" that was once harvested dominantly in this area was this species. The remaining 11 specimens were identified as genus Hemicorallium Gray, 1867. These were identified as belonging to the following species: one previously described species [H. laauense (Bayer, 1956)], three similar species [H. cf.

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Taxonomic revision of Coralliidae with descriptions of new species from New Caledonia and the Hawaiian Archipelago

Cited by 9 publications

References 21 publications

Oceanographic Drivers of Deep-Sea Coral Species Distribution and Community Assembly on Seamounts, Islands, Atolls, and Reefs Within the Phoenix Islands Protected Area

Oceanographic Drivers of Deep-Sea Coral Species Distribution and Community Assembly on Seamounts, Islands, Atolls, and Reefs Within the Phoenix Islands Protected Area

A review of gorgonian coral species (Cnidaria, Octocorallia, Alcyonacea) held in the Santa Barbara Museum of Natural History research collection: focus on species from Scleraxonia, Holaxonia, and Calcaxonia – Part I: Introduction, species of Scleraxonia and Holaxonia (Family Acanthogorgiidae)

A Report on Coralliidae (Cnidaria: Octocorallia) Specimens Collected from the Emperor Seamounts with Descriptions of Three New Species

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