Deep-Water Octocorals (Cnidaria, Anthozoa) from the Galápagos and Cocos Islands. Part 1: Suborder Calcaxonia

Cairns, Stephen D.

doi:10.3897/zookeys.729.21779

Cited by 17 publications

(30 citation statements)

References 36 publications

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“…nov. However, the new species differs distinctly from C. midas Cairns, 2018 by the tree-shaped colony (vs. bottlebrush-shaped), wider orthostiche interval (50-65 mm vs. 12-18 mm), larger polyps (2.0-4.0 mm vs. 1.1 mm), and the presence of various shapes of scales at the body bases (vs. absence). Chrysogorgia fragilis sp.…”

Section: Classmentioning

confidence: 75%

“…Chrysogorgia fragilis sp. nov. belongs to the ''group A, Spiculosae'' with an unusual branching sequence of 1/3L, with which it is similar to Chrysogorgia midas Cairns, 2018 and C. dendritica sp. nov.…”

Section: Classmentioning

confidence: 99%

“…The genus Chrysogorgia Duchassaing & Michelotti, 1864 contains 72 species distributed in the world oceans, with water depths ranging from 10 m to 4,492 m (Watling et al, 2011;Cairns, 2018;Xu et al, 2019). Three branching forms have been recognized in the colonies of the genus: a single ascending spiral (clockwise or counterclockwise) producing a bottlebrush shape, a single fan (planar colony) and two fans emerging from a short main stem (biflabellate colony) Cordeiro, Castro & Pérez, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Morphology and molecular phylogeny of three new deep-sea species ofChrysogorgia(Cnidaria, Octocorallia) from seamounts in the tropical Western Pacific Ocean

Zhan

2020

PeerJ

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Three new species of Chrysogorgia were discovered from seamounts in the tropical Western Pacific Ocean. Chrysogorgia dendritica sp. nov. and Chrysogorgia fragilis sp. nov. were collected from the Kocebu Guyot of the Magellan Seamount chain with the water depth of 1,821 m and 1,279-1,321 m, respectively, and Chrysogorgia gracilis sp. nov. was collected from a seamount adjacent to the Mariana Trench with the water depth of 298 m. They all belong to the Chrysogorgia ''group A, Spiculosae'' with rods distributed in body wall and tentacles, and differ from all congeners except C. abludo Pante & Watling, 2012 by having a tree-shaped colony (vs. bottlebrush-shaped, planar or biflabellate). Chrysogorgia dendritica sp. nov. is unique in having a monopodial stem, the 1/3L branching sequence and the amoeba-shaped sclerites (sclerites branched toward to many directions) at the body bases of polyps. Chrysogorgia fragilis sp. nov. is most similar to C. abludo, but differs by the regular 1/3L branching sequence and elongate flat scales in coenenchyme. Chrysogorgia gracilis sp. nov. is easily separated from congeners by the 1/4L branching sequence, the absence of sclerites in the basal body wall, and the very sparse scales in coenenchyme. Based on the phylogenetic and genetic distance analyses of mtMutS gene, all the available Chrysogorgia species were separated into two main groups: one includes C. binata, C. cf. stellata and C. chryseis, which have two or more fans emerging from a short main stem (bi-or multiflabellate colony); the other one includes all the species with the branching patterns as a single ascending spiral (clockwise or counterclockwise, bottlebrush-shaped colony), a fan (planar colony) and a bush of branches perched on top of a long straight stem (tree-shaped colony). Additionally, the tree-shaped colony represents a new branching pattern in Chrysogorgia, and therefore we extend the generic diagnosis.How to cite this article Xu Y, Zhan Z, Xu K. 2020. Morphology and molecular phylogeny of three new deep-sea species of Chrysogorgia (Cnidaria, Octocorallia) from seamounts in the tropical Western Pacific Ocean. PeerJ 8:e8832 http://doi.

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Section: Classmentioning

confidence: 75%

Section: Classmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morphology and molecular phylogeny of three new deep-sea species ofChrysogorgia(Cnidaria, Octocorallia) from seamounts in the tropical Western Pacific Ocean

Zhan

2020

PeerJ

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“…With the recent synonymy of Fanellia with Callogorgia, the genus now contains 38 species (Cairns & Wirshing 2018, Cairns 2018. A key to the 22 Indo-Pacific species was recently published by Cairns (2018). Discussions of the genus are included in Cairns & Bayer (2009) and Cairns (2018).…”

Section: Methodsmentioning

confidence: 99%

“…Nonetheless, some species have broader distributions and thus knowledge of the entire Pacific primnoid fauna is essential. Although not exhaustive, significant revisions of the Pacific primnoid fauna, listed from north to south, include: off Alaska (Nutting 1912, Bayer 1952, Cairns & Baco 2007, Cairns, 2011, Baco & Cairns 2012, Japan (Kinoshita 1908, Nutting 1912, Aurivillius 1931, the Emperor Seamounts , Hawaiian Islands (Nutting 1908, Bayer & Stefani 1989, 2010, Marcus-Necker Ridge (Pasternak 1981), east Pacific seamounts (Nutting 1909, Cairns 2007b, Clarion-Clipperton Fracture Zone (Cairns 2016a), Galápagos and Cocos Islands (Studer 1894, Cairns 2018, New Caledonia (Bayer & Stefani 1989), off New South Wales, Australia (Thomson & Mackinnon 1911), New Zealand (Bayer 1996, 2016b, off Chile (Ofwegen et al 2009), and other general localities (Studer 1878, Wright & Studer 1889, Versluys 1906, Kükenthal 1919, Cairns & Bayer 2009.…”

Section: Introductionmentioning

confidence: 99%

Primnoidae (Cnidaria: Octocorallia: Calcaxonia) of the Okeanos Explorer expeditions (CAPSTONE) to the central Pacific

Cairns

2018

Zootaxa

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536

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This paper discusses and illustrates the 23 primnoid species collected by the R/V Okeanos Explorer in the US marine protected areas in the central and western Pacific, ranging from the Musician Seamounts in the north to American Samoa to the south, and the northern Mariana Islands to the west (CAPSTONE expeditions, 2015-2017). In situ photographs are provided for most species. Thirteen of the 23 species are described as new, as well as two new genera. One new genus, Macroprimnoa, possesses some of the largest polyps in the family. A dichotomous key is provided to facilitate comparisons among the 27 species of Calyptrophora. An update of the abyssal octocorallian species occurring deeper than 3000 m is provided, increasing that number from 39 to 49 species. The character of the articulating ridge, found on the distal edge of the basal body wall scales, is re-evaluated, resulting in four genera having this character state, and requiring the description of the new genus Pseudonarella.

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The macrofauna associated to the bamboo coral Isidella elongata: to what extent the impact on isideidae affects diversification of deep-sea fauna

et al. 2022

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Macrofauna associated with the bamboo coral Isidella elongata was analysed in the Balearic Basin at depths of 697–1308 m. The diversity of associated macrofauna and the specific associations identified depended on different morphological characteristics of colonies, such as height or density of rami. Species associated with Isidella consisted mainly of sessile fauna, such as cnidarians (the actinian Amphianthus dornhii and the solitary coral Desmophyllum dianthus) and cirripeds (Gibossaverruca sp.). The strongest relationship (commensalism) occurred for the Pontogeneiidae amphipod Dautzenbergia megacheir, living attached to colonies of Isidella and represented by all population stages from adult (oostegal) females and males to juveniles. Species-coral relationships between Dautzenbergia and bamboo corals (Isididae) are plausible. Dautzenbergia spp. showed morphological differences between Atlantic (described by Walker 1897 as “eyes wanting”) and Mediterranean (with well-developed reddish eyes) specimens. This would suggest diversification of this genus, as has been recently suggested for Pleustidae associated with deep gorgonians. The diversity of the macrofaunal community associated with I. elongata was higher in the most mature (larger colonies with higher density) fields found NW of Mallorca, with higher colonies than in other parts of the Mediterranean. This was the only site where Gibossaverruca sp. (a first Mediterranean faunal record) and D. dianthus were collected. These complex associations between macrofauna and deep-water corals may provide arguments to protect these fragile ecosystems as a source of faunal diversity and diversification.

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Deep-Water Octocorals (Cnidaria, Anthozoa) from the Galápagos and Cocos Islands. Part 1: Suborder Calcaxonia

Cited by 17 publications

References 36 publications

Morphology and molecular phylogeny of three new deep-sea species ofChrysogorgia(Cnidaria, Octocorallia) from seamounts in the tropical Western Pacific Ocean

Morphology and molecular phylogeny of three new deep-sea species ofChrysogorgia(Cnidaria, Octocorallia) from seamounts in the tropical Western Pacific Ocean

Primnoidae (Cnidaria: Octocorallia: Calcaxonia) of the Okeanos Explorer expeditions (CAPSTONE) to the central Pacific

The macrofauna associated to the bamboo coral Isidella elongata: to what extent the impact on isideidae affects diversification of deep-sea fauna

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