New glass sponges (Porifera: Hexactinellida) from deep waters of the central Aleutian Islands, Alaska

Zootaxa ◽  
2013 ◽  
Vol 3628 (1) ◽  
pp. 1-64 ◽  
Author(s):  
HENRY M. REISWIG ◽  
ROBERT P. STONE
Keyword(s):  
New Species ◽  
Aleutian Islands ◽  
Remotely Operated Vehicle ◽  
Widespread Species ◽  
Deep Waters ◽  
Shrimp Trawl ◽  
Young Stage ◽  
Glass Sponges ◽  
Present Argument ◽  
Shallow Water Species

Hexactinellida from deep-water communities of the central Aleutian Islands, Alaska, are described. They were mostly collected by the remotely operated vehicle 'Jason II' from 494–2311 m depths during a 2004 RV 'Roger Revelle' expedition, but one shallow-water species collected with a shrimp trawl from 155 m in the same area is included. The excellent condition of the ROV-collected specimens enabled valuable redescription of some species previously known only from badly damaged specimens. New taxa include one new genus and eight new species in five families. Farreidae consist of two new species, Farrea aleutiana and F. aspondyla. Euretidae consists of only Pinulasma fistulosum n. gen., n. sp. Tretodictyidae include only Tretodictyum amchitkensis n. sp. Euplectellidae consists of only the widespread species Regadrella okinoseana Ijima, reported here over 3,700 km from its closest previously known occurrence. The most diverse family, Rossellidae, consists of Aulosaccus ijimai (Schulze), Aulosaccus schulzei Ijima, Bathydorus sp. (young stage not determinable to species), Caulophacus (Caulophacus) adakensis n. sp., Acanthascus koltuni n. sp., Staurocalyptus psilosus n. sp., Staurocalyptus tylotus n. sp. and Rhabdocalyptus mirabilis Schulze. We present argument for reinstatement of the abolished rossellid subfamily Acanthascinae and return of the subgenera Staurocalyptus Ijima and Rhabdocalyptus Schulze to their previous generic status. These fauna provides important complexity to the hard substrate communities that likely serve as nursery areas for the young stages of commercially important fish and crab species, refuge from predation for both young and adult stages, and also as a focal source of prey for juvenile and adult stages of those same species.

scholarly journals Rossellid glass sponges (Porifera, Hexactinellida) from New Zealand waters, with description of one new genus and six new species

ZooKeys ◽  
2021 ◽  
Vol 1060 ◽  
pp. 33-84
Author(s):  
Henry M. Reiswig ◽  
Martin Dohrmann ◽  
Michelle Kelly ◽  
Sadie Mills ◽  
Peter J. Schupp ◽  
...  
Keyword(s):  
New Species ◽  
New Zealand ◽  
New Genus ◽  
Glass Sponge ◽  
Deep Waters ◽  
The World ◽  
Glass Sponges ◽  
The University

New Zealand’s surrounding deep waters have become known as a diversity hotspot for glass sponges (Porifera: Hexactinellida) in recent years, and description and collection efforts are continuing. Here we report on eight rossellids (Hexasterophora: Lyssacinosida: Rossellidae) collected during the 2017 RV Sonne cruise SO254 by ROV Kiel 6000 as part of Project PoribacNewZ of the University of Oldenburg, Germany. The material includes six species new to science, two of which are assigned to a so far undescribed genus; we further re-describe two previously known species. The known extant rossellid diversity from the New Zealand region is thus almost doubled, from nine species in five genera to 17 species in eight genera. The specimens described here are only a small fraction of hexactinellids collected on cruise SO254. Unfortunately, the first author passed away while working on this collection, only being able to complete the nine descriptions reported here. The paper concludes with an obituary to him, the world-leading expert on glass sponge taxonomy who will be greatly missed.

scholarly journals New species of the gorgoniian genus Pacifigorgia (Coelenterata: Octocorallia: Gorgoniidae) from Pacific Panama

Zootaxa ◽  
2004 ◽  
Vol 541 (1) ◽  
pp. 1 ◽  
Author(s):  
ODALISCA BREEDY ◽  
HECTOR M. GUZMAN
Keyword(s):  
New Species ◽  
National Park ◽  
Pacific Coast ◽  
New Records ◽  
Scanning Electron Micrographs ◽  
Species List ◽  
The Pacific ◽  
Fourth Species ◽  
Shallow Water Species ◽  
Water Species

Four new shallow water species of the genus Pacifigorgia were found in recent surveys along the Pacific coast of Panama. One of the species was only found in dense patches at two shallow seamount-like localities inside the Coiba National Park, Gulf of Chiriqu . Two other species were patchily distributed at several localities in the Gulf of Chiriqu . A fourth species was widely distributed around the gulfs of Chiriqu and Panama encompassing a broad range of habitats and depths. The new species are described and illustrated in detail with scanning electron micrographs (SEM) of the sclerites, and colour photographs of the colony forms. The suspected occurrence of a particular Pacifigorgia species for this region is confirmed and two other new records are added to the species list. With the new four species, a total of 15 are established for Panama, making 31 species for the eastern Pacific to date.

The genus Arctomelon Dall, 1915 in Alaskan waters, with the description of a new species

The Festivus ◽  
2018 ◽  
Vol 50 (4) ◽  
pp. 246-263
Author(s):  
Roger Clark
Keyword(s):  
New Species ◽  
Distinct Species ◽  
Aleutian Islands ◽  
A New Species

The Volutid genus Arctomelon Dall, 1915 in Alaskan waters is examined, four species are recognized. A new species, Arctomelon borealis sp. nov. is described from bathyal depths of the central Aleutian Islands. A. stearnsii ryosukei (Habe & Ito, 1965) is recognized as a distinct species.

scholarly journals Three new species of Scissurellidae (Gastropoda, Prosobranchia) from the coast of Brazil

1972 ◽  
Vol 21 (0) ◽  
pp. 01-13 ◽  
Author(s):  
Pierre Ch. Montouchet
Keyword(s):  
New Species ◽  
Sao Paulo ◽  
The State ◽  
Shallow Waters ◽  
Brazilian Coast ◽  
São Paulo ◽  
Internal Anatomy ◽  
The Third ◽  
Deep Waters ◽  
Three New Species

A consultation of the original descriptions of the genera of Scissurellidae led the author to conclude that the valid names for the genera of this family are: Scissurella d'Orbigny, 1823 (redescription by Sowerby, 1824), Anatoma Woodward, 1859, Inoisura Hedley, 1904, Scissurona Iredale, 1924, Sinezona Finlay, 1927. Scissurella and Anatoma are cosmopolites, the first generally living in shallow waters, associated to sea-weeds, while the second is found in deep waters. The three last genera are restricted to Australasia. Three new species are described from the Brazilian coast: Soissu rella alexandrei, Scissurella eleotilis and Scissurella morretesi. The internal anatomy of S. alexandrei is described. These three new species have been found in littoral shallow waters, the two first on the northeast Brazilian coast, the third on the coast of the State of São Paulo. The fourth known species of Scissurellidae from Brazil, Anatoma aedonia (Watson, 1886), was dredged by H.M.S, "Challenger", in 1873, off Pernambuco, 350 fm (640 m).

New species of Crella (Pytheas) Topsent, 1890 and Crellomima Rezvoi, 1925 (Crellidae, Poecilosclerida, Demospongiae) from Chilean shallow and Argentinean deep waters, with a synthesis on the known phylogenetic relationships of crellid sponges

Zootaxa ◽  
2021 ◽  
Vol 5052 (3) ◽  
pp. 353-379
Author(s):  
JULIO C.C. FERNANDEZ ◽  
MARIANELA GASTALDI ◽  
GERMÁN ZAPATA-HERNÁNDEZ ◽  
LUIS M. PARDO ◽  
FABIANO L. THOMPSON ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Relationships ◽  
Morphological Characters ◽  
Molecular Data ◽  
Southern Chile ◽  
Deep Waters ◽  
Molecular Phylogenetic ◽  
Molecular Phylogenies ◽  
Taxonomic Studies ◽  
Phylogenetic Affinities

Here, we describe four new species of Crellidae Dendy, 1922 and discuss characters and relationships from published molecular phylogenies including crellid sponges. New species proposed are Crella (Pytheas) chiloensis Fernandez, Gastaldi, Pardo & Hajdu, sp. nov., from southern Chile (15 m depth), C. (P.) desventuradae Fernandez, Gastaldi, Zapata-Hernández & Hajdu, sp. nov., from Desventuradas Archipelago (10–20 m depth), Crella (P.) santacruzae Fernandez, Gastaldi, Thompson & Hajdu, sp. nov., from deep waters off Argentina (750 m depth) and Crellomima sigmatifera Fernandez, Gastaldi & Hajdu, sp. nov., from the Chilean fjords region (ca. 20 m depth). These new species are set apart from each other and from known species mainly due to aspects of their spiculation. Chelae microscleres and acanthostyles supply characters that might be used to infer phylogenetic relationships and to verify the monophyly of Crella Gray, 1867 and Crellidae, which has seemingly been contradicted by preliminary molecular data available in the systematics’ literature. Our own interpretation of phylogenetic affinities, in the light of morphological characters from previous taxonomic studies, argues for a classification reassessment of materials (vouchers) included in these molecular phylogenies, especially in the case of Crella incrustans (Carter, 1885). We argue that currently available molecular phylogenetic outcomes for crellid sponges are not supportive of the polyphyly of Crella and Crellidae.  

New species and new records of Eriococcus (Hemiptera, Coccoidea, Eriococcidae) from South America

Zootaxa ◽  
2007 ◽  
Vol 1573 (1) ◽  
pp. 51-64 ◽  
Author(s):  
IMRE FOLDI ◽  
FERENC KOZÁR
Keyword(s):  
New Species ◽  
South America ◽  
New Records ◽  
Widespread Species ◽  
Taxonomic Key ◽  
Adult Females ◽  
First Time

The adult females of five new species in the genus Eriococcus are described and illustrated: Eriococcus christopherus, E. longisetosus E. paranaensis, from Brazil, and E. maximus and E. venezuelaensis from Venezuela. In addition, the following are recorded for the first time: E. dubius (Cockerell), E. maximus and E. venezuelaensis from Brazil and Venezuela and E. rhadinothrix (Miller & González) from Brazil. The most widespread species was E. maximus, which was collected from Brazil, Paraguay and Venezuela. A taxonomic key is provided for the separation of the seven species studied.

New species and a new record of sea cucumbers from deep waters of the South African temperate region (Echinodermata: Holothuroidea)

Zootaxa ◽  
2009 ◽  
Vol 2013 (1) ◽  
pp. 30-42 ◽  
Author(s):  
AHMED S. THANDAR
Keyword(s):  
New Species ◽  
South African ◽  
Deep Sea ◽  
New Record ◽  
New South ◽  
The South ◽  
Temperate Region ◽  
Sea Cucumbers ◽  
Deep Waters ◽  
Two New Species

Two new species, Pseudostichopus langeae and Psolus griffithsi, and a new South African record, Molpadia musculus Risso, are described from some deep-sea material collected off the South African west and south coasts. This material also contains the well known Pseudocnella insolens (Théel), Ocnus capensis (Théel), Rhopalodinopsis capensis Heding and an indeterminate Thyone sp.

Revision of the genus Setosella (Bryozoa: Cheilostomata) with description of new species from deep-waters and submarine caves of the Mediterranean Sea

Zootaxa ◽  
2020 ◽  
Vol 4728 (4) ◽  
pp. 401-442 ◽  
Author(s):  
A. ROSSO ◽  
E. DI MARTINO ◽  
V. GEROVASILEIOU
Keyword(s):  
New Species ◽  
Southern Italy ◽  
Free Living ◽  
Deep Waters ◽  
Scanning Electron Microscopy Examination ◽  
Species Complexes ◽  
Morphological Differences ◽  
Three New Species ◽  
Submarine Caves ◽  
Microscopy Examination

The genus Setosella included to date six species. After revision, only four of these species were retained, i.e. S. vulnerata, S. cavernicola, S. folini and S. spiralis. The remaining two species were tentatively placed in Woodipora, W.? antilleana n. comb., and Andreella,  A.? fragilis n. comb. On the other hand, scanning electron microscopy examination of Mediterranean material, revealed the presence of three new species previously included in species complexes: S. cyclopensis n. sp. from the open-shelf, S. rossanae n. sp. from submarine caves, and S. alfioi n. sp. from deep-waters. The diagnosis of the genus was amended to include the occurrence of kenozooids in S. cyclopensis n. sp. and S. cavernicola, and of free-living ring-shaped and scorpioid colonies in S. folini and S. alfioi n. sp. All the seven species n           1ow in Setosella have present-day representatives; the geographic distribution of the genus 1sinian of southern Italy and insular Greece, with only three species occasionally and discontinuously reported. All species are able to produce numerous, subsequent intramural buds and morphological differences seem to be consistently associated with exploitation of particular habitats and substrata. 

scholarly journals Biocalcification by Emiliania huxleyi in batch culture experiments

2008 ◽  
Vol 72 (1) ◽  
pp. 251-256 ◽  
Author(s):  
C. de Bodt ◽  
J. Harlay ◽  
L. Chou
Keyword(s):  
Organic Carbon ◽  
General Feature ◽  
Emiliania Huxleyi ◽  
Particle Aggregation ◽  
Strongly Correlated ◽  
Batch Experiments ◽  
Saturation State ◽  
Widespread Species ◽  
Surface Ocean ◽  
Deep Waters

AbstractCoccolithophores, among which Emiliania huxleyi is the most abundant and widespread species, are considered the most productive calcifying organism on earth. The export of organic carbon and calcification are the main drivers of the biological CO2 pump and are expected to change with oceanic acidification. Coccolithophores are further known to produce transparent exopolymer particles (TEP) that promote particle aggregation. As a result, the TEP and biogenic calcium carbonate (CaCO3) contribute to the export of carbon from the surface ocean to deep waters. In this context, we followed the development and the decline of E. huxleyi using batch experiments with monospecific cultures. We studied the link between different processes such as photosynthesis, calcification and the production of TEP. The onset of calcification was delayed in relation to photosynthesis. The timing and the general feature of the dynamics of calcification were closely related to the saturation state of seawater with respect to calcite, Ωcal. The production of TEP was enhanced after the decline of phytoplankton growth. After nutrient exhaustion, particulate organic carbon (POC) concentration increased linearly with increasing TEP concentration, suggesting that TEP contributes to the POC increase. The production of CaCO3 is also strongly correlated with that of TEP, suggesting that calcification may be considered as a source of TEP precursors.

A new species of Lesquerella (Cruciferae) in northwestern Canada

1969 ◽  
Vol 47 (1) ◽  
pp. 215-216 ◽  
Author(s):  
Gerald A. Mulligan ◽  
A. E. Porsild
Keyword(s):  
New Species ◽  
The Arctic ◽  
Base Number ◽  
Widespread Species ◽  
A New Species

A new species of Lesquerella endemic to the Richardson and Ogilvie Mountains of northwestern Canada is described as Lesquerella Calderi Mulligan and Porsild. It is tetraploid with the base number x = 5 and is most closely related to Lesquerella arctica (Wormskj.) Watson, a widespread species of the Arctic that is dodecaploid with the base x = 5.

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