Description of two new species of , a new genus incertae sedis in Argestidae Por, 1986 (Copepoda, Harpacticoida), with reflections on argestid colonization of the Great Meteor Seamount plateau

George, Kai Horst

doi:10.1016/j.ode.2004.02.003

Cited by 36 publications

(57 citation statements)

References 6 publications

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“…certain families with a preference for deep-sea habitats, e.g. argestidae, neobradyidae, Pseudotachidiidae and Zosimidae (seifried, 2004;George, 2004), were only found in the Porcupine seabight and were absent in the tropical lagoon. The phytal families dactylopusiidae and Tisbidae are very rare in the deep sea (seifried, 2004) and were restricted to the tropical lagoon.…”

Section: Compositionmentioning

confidence: 99%

Harpacticoida (Crustacea: Copepoda) associated with cold-water coral substrates in the Porcupine Seabight (NE Atlantic): species composition, diversity and reflections on the origin of the fauna

Gheerardyn¹,

Troch²,

Vincx³

et al. 2009

Sci. Mar.

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suMMary: The harpacticoid copepod fauna associated with the coral degradation zone of Lophelia pertusa (linnaeus, 1758) reefs was investigated for the first time in the Porcupine seabight (ne atlantic). The species list of the coral degradation zone includes 157 species, 62 genera and 19 families, and the most species-rich families were ectinosomatidae (36 species), ameiridae (29 species) and argestidae (17 species). at least 80% of the species were considered new to science. Most of the 23 known species have been reported from ne atlantic coastlines and from higher latitudes in northern subpolar and Polar seas. at the family level, the harpacticoid fauna in the Porcupine seabight did not seem to differ markedly from other deep-sea areas, with essentially the same abundant families. However, the presence of typically epifaunal taxa indicates that the hard substrates of the coral degradation zone provide an exceptional habitat. Further, harpacticoid composition and diversity of sediment and coral fragments were compared with similar substrates in a tropical reef lagoon (Zanzibar, Tanzania). Both regions harboured different fauna and the difference between coral and sediment was more obvious in the tropical lagoon. species richness and evenness of the two microhabitats in the tropical lagoon were lower than in the deep sea.Keywords: cold-water corals, harpacticoid copepods, species composition, north-east atlantic, Porcupine seabight. resuMen: Harpacticoídeos (Crustacea: Copepoda) asociados a sustratos de corales de aguas frías en Porcupine Seabight (NE Atlántico): composición específica, diversidad y reflexiones sobre el origen de la fauna.-Por primera vez, se ha investigado la fauna de copépodos harpacticoídeos asociada a la zona de degradación del coral de arrecifes de Lophelia pertusa (linneo, 1758), de Porcupine seabight (ne atlántico). el listado de especies de la zona de degradación del coral incluye 157 especies, 62 géneros y 19 familias. las familias con mayor riqueza de especies fueron ectinosomatidae (36 especies), ameiridae (29 especies) y argestidae (17 especies). en conjunto, al menos el 80% de las especies son consideradas nuevas para la ciencia. la mayoría de las 23 especies conocidas han sido citadas en las costas del ne atlántico y en altas latitudes del mar subpolar y Polar. a nivel de familia, la fauna harpacticoídea en Porcupine seabight no parece ser muy diferente de la de otras áreas de fondos marinos profundos, presentando en esencia las mismas familias dominantes. sin embargo, la presencia de taxones típicamente epifáunicos indica que los sustratos duros de la zona de degradación del coral proporcionan un hábitat excepcional. además, la composición de copépodos harpacticoídeos y la diversidad de sedimento y fragmentos de coral muerto fueron comparados con sustratos similares en una laguna de arrecife tropical (Zanzíbar, Tanzania). ambas regiones dan abrigo a fauna diferente, y la diferencia entre coral y sedimento fue más evidente en la laguna tropical. la riqueza específica y la equidad d...

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Section: Compositionmentioning

confidence: 99%

Harpacticoida (Crustacea: Copepoda) associated with cold-water coral substrates in the Porcupine Seabight (NE Atlantic): species composition, diversity and reflections on the origin of the fauna

Gheerardyn¹,

Troch²,

Vincx³

et al. 2009

Sci. Mar.

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“…Members of Eurycletodes conform with most of the morphological features of Argestidae as listed by Por (1986b) and George (2004), but the exact positioning inside Argestidae is still unclear. However, the highly derived character states (e.g.…”

Section: Historical Backgroundmentioning

confidence: 96%

“…These species were transferred to Eurycletodes on its establishment (Sars 1909), which remained in Cletodidae T. Scott, 1904. Only several decades after the morphological characterization of Eurycletodes Por (1986b) erected the Argestidae and transferred Eurycletodes to this new family, which nowadays includes 21 genera, 8 of which are considered to be incertae sedis (Bodin 1997;Corgosinho and Martínez Arbizu 2009;George 2004;George 2008). In 1944, when Eurycletodes contained 13 species, Lang suggested two lineages within Eurycletodes and defined the subgenera Eurycletodes (Eurycletodes) and Eurycletodes (Oligocletodes).…”

Section: Historical Backgroundmentioning

confidence: 99%

A new species of Eurycletodes Sars, 1909 (Copepoda: Harpacticoida: Argestidae) from the southern hemisphere including remarks on the phylogeny of the genus and its subgenera

Menzel

2010

Helgol Mar Res

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This paper deals with taxonomy and phylogenetics of the genus Eurycletodes Sars, 1909 (Copepoda: Harpacticoida: Argestidae). Samples, collected from the southeast Atlantic on board RV ''Meteor'' during the cruises DIVA-1 (M48/1) and DIVA-2 (M63/2), contain specimens of Eurycletodes. Eurycletodes is characterized as a monophylum by A1 segments III ? IV fused, basal seta of md palp lost, exp of md palp reduced to 1 seta or completely lost. Similarly, the subgenera Eurycletodes (Eurycletodes) and Eurycletodes (Oligocletodes) are characterized as monophyletic by the loss of the inner seta on P1 exp2 (apomorphic to E. (E.)) and the absence of the inner seta on P5 endopodal lobe (apomorphic to E. (O.)). Eurycletodes profundus is renamed as E. (O.) profundus. Eurycletodes ephippiger is the only species of the genus without subgeneric designation. Eurycletodes (O.) diva sp. nov. is described. The new species differs from described species of the genus by a larger body size, P5 endopodal lobe only slightly protruding, last segment of A1 with 2 outer setae, furcal rami elongated between setae VII and IV. The occurrence of 2 specimens of Eurycletodes (O.) diva sp. nov. at 2 sites separated by the Walvis Ridge supports the hypothesis that geographic obstacles do not prevent harpacticoid copepods from spreading in the deep sea.

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“…Although the majority of the surveyed meiofauna genera are cosmopolitan and found in several marine ecosystems, some genera -including the nematode genus Thalassomonhystera, the ostracod genus Xylocythere or the genera belonging to the copopod family Argestidae (e.g. Argestes, Mesocletodes and Fultonia) -are reported as typical deep-sea in habitants, and were present only on the lower slope accordingly (George 2004, Maddocks 2005, Vanreusel et al 2010b). …”

Section: Different Meiofaunal Composition At Different Depthsmentioning

confidence: 99%

Community study of tubeworm-associated epizooic meiobenthos from deep-sea cold seeps and hot vents

Degen¹,

Riavitz²,

Gollner³

et al. 2012

Mar. Ecol. Prog. Ser.

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The permanent metazoan meiofauna associated with vestimentiferan tubeworm aggregations from hydrocarbon seeps of the upper Louisiana slope in the Green Canyon (~550 m) and the lower slope in Atwater Valley (~2200 m) of the Gulf of Mexico was characterized. Meiofauna abundance, diversity, and community composition at genus level were compared between these seep sites, and with those of tubeworms from hydrothermal vents of the East Pacific Rise (Gollner et al. 2007; Mar Ecol Prog Ser 337:39-49). The abundance was not significantly different between the 2 seep sites, and was also similar to those found at vents. A total of 150 meiobenthic genera were identified from the cold seep sites. While no significant difference in univariate measurements of diversity was detected, a shift in community composition between the shallow and the deep seep site was found. The hot vent communities included a total of only 17 genera and the diversity measurements were significantly lower at vents than at seeps. Also, Bray-Curtis dissimilarity was 97% between the meiobenthic communities from seeps and vents. The genera richness was negatively correlated with maximum temperature and maximum sulfide concentration, and positively correlated with minimum pH value. We conclude that the harsh conditions tubeworms experience at vents compared to the moderate conditions at cold seeps, as well as the longevity of cold seeps surrounded by sedimented deep-sea plains but short-lived vents on basaltic mid-ocean ridges, might explain the contrasting diversity patterns.KEY WORDS: Meiobenthos · Meiofauna · Cold seep · Hydrothermal vent · Community study · Biodiversity · Vestimentiferans · Gulf of Mexico Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 468: [135][136][137][138][139][140][141][142][143][144][145][146][147][148] 2012 vestimentiferans (Polychaeta, Siboglinidae) create complex secondary structures that serve as a living space for a variety of associated species (Bright & Lallier 2010).Symbiont-housing foundation species from cold seeps of the Gulf of Mexico have been studied extensively (Levin 2005, Cordes et al. 2009). The cold seep sites on the upper Louisiana slope (<1000 m depth) in the Gulf of Mexico are colonized by 3 species of vestimentiferan tubeworms: Lamellibrachia luymesi van der Land & Nørrevang, 1975; Seepiophila jonesi Gardiner, McMullin & Fischer, 2001; and a still undescribed species of escarpids (McMullin 2003). On the lower slope (>1000 m depth), Escarpia laminata Jones, 1985 and 2 still undescribed species of lamellibrachids (see Cordes et al. 2009) are found.Hundreds to thousands of individuals of Seepiophila jonesi co-occurring with Lamellibrachia luymesi form bush-like aggregations several meters in diameter and sometimes over 2 m in height on the upper slope (Bergquist et al. 2002). Conservative age estimates of L. luymesi are well over 100 years, with the upper limit of age still unknown (Fisher et al. 1997, Bergquist et al. 2000, Cordes et al. 2005b)....

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Description of two new species of , a new genus incertae sedis in Argestidae Por, 1986 (Copepoda, Harpacticoida), with reflections on argestid colonization of the Great Meteor Seamount plateau

Cited by 36 publications

References 6 publications

Harpacticoida (Crustacea: Copepoda) associated with cold-water coral substrates in the Porcupine Seabight (NE Atlantic): species composition, diversity and reflections on the origin of the fauna

Harpacticoida (Crustacea: Copepoda) associated with cold-water coral substrates in the Porcupine Seabight (NE Atlantic): species composition, diversity and reflections on the origin of the fauna

A new species of Eurycletodes Sars, 1909 (Copepoda: Harpacticoida: Argestidae) from the southern hemisphere including remarks on the phylogeny of the genus and its subgenera

Community study of tubeworm-associated epizooic meiobenthos from deep-sea cold seeps and hot vents

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