Bathyal demersal fishes of Charlie-Gibbs Fracture Zone region (49–54°N) of the Mid-Atlantic Ridge: II. Baited camera lander observations

Cousins, Nicola J.; Linley, Thomas D.; Jamieson, Alan J.; Bagley, Philip Michael; Blades, Hannah; Box, Tetrienne; Chambers, R.; Ford, Alexander C; Shields, Mark A.; Priede, Imants George

doi:10.1016/j.dsr2.2013.08.002

Cited by 19 publications

(15 citation statements)

References 30 publications

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“…The bathymetric barrier created by the ridge itself does not influence the distribution of more motile species, such as fish or amphipods (Cousins et al . ; Horton et al . ), despite observed differences in amphipod community composition between the north and south (Horton et al .…”

Section: Introductionmentioning

confidence: 99%

Benthic megafauna on steep slopes at the Northern Mid‐Atlantic Ridge

2016

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The role of small-scale (<10 km) habitat availability in structuring deep-sea hard substratum assemblages is poorly understood. Epibenthic megafauna and substratum availability were studied on steep slopes at the Mid-Atlantic Ridge from May to July 2010 northwest, northeast, southwest and southeast of the Charlie-Gibbs Fracture Zone (CGFZ; 48-54°N) at between 2095 and 2601 m depth. Megafauna were six times denser north of the CGFZ compared with the south and differences in density were almost entirely driven by sessile fauna. There was no significant difference in habitat availability amongst sites. Rocky substratum made up 48% of the total area surveyed, with individual transects having between 0% and 82% rock. Assemblage structures were different amongst all superstations. The north was dominated by demospongids and hexactinellids, whereas the southern superstations were dominated by anthozoans and hexactinellids. Differences in megafaunal assemblages north and south of the CGFZ primarily reflected variations in demospongid and anthozoan species composition. With 213-1825 individualsÁha À1, and 7-24 species per superstation, hexactinellids were the most species-rich (36 species) and cosmopolitan taxa at the study site, supporting observations elsewhere along the ridge and in the CGFZ. The absence of significant differences in substrata availability suggested alternative drivers for density or percentage cover. The amount of hard substratum available only limited sessile megafauna density at one transect that was entirely covered with sediments. Species richness was highest for areas with intermediate values of substratum coverage (35-43% rock).

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Section: Introductionmentioning

confidence: 99%

Benthic megafauna on steep slopes at the Northern Mid‐Atlantic Ridge

2016

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“…In addition, we incorporated data from the online databases, FishBase (http://www.fish base.org), OBIS (Ocean Biogeographic Information System, http://www.iobis.org) and GBIF (Global Biodiversity Information Facility, http://www. gbif.org), as well as imagery captured by the ROBIO Lander (Cousins et al, 2013).…”

Section: Methodsmentioning

confidence: 99%

“…Our data suggest that this species in the NEA is not rare and is encountered regularly during deep sea research. In the area along the MAR, several specimens of Jensen's skate were collected by trawls and longlines , as well as photographed at baited landers, including in the Charlie Gibbs Fracture Zone (Cousins et al, 2013).…”

Section: Geographic and Vertical Distributionmentioning

confidence: 99%

“…Subsequently, it was marked by occasional captures in the waters of the Northwest Atlantic (NWA) (Bigelow and Schroeder, 1953;Tempelman, 1965;Leim and Scott, 1966;Moore et al, 2000;Alpoim et al, 2002;Coad and Reist, 2004;Sulak et al, 2009;Halliday et al, 2012;Kenchington et al, 2013, Vázquez et al, 2013, the waters around Greenland (Karrer, 1976;Nielsen and Bertelsen, 1992;Møller et al, 2010), the Northeast Atlantic (NEA), to the west of the British Isles Duncan, 1987, 1989;Quero et al, 1 The article is published in the original. 2 Materials of the paper were presented at the 16th annual scien tific conference of the European Elasmobranch Association (Milan, Italy, November 22-25, 2012). 2000; George and Zidowitz, 2006;Neat et al, 2008;Johnston et al, 2010;Séret, 2010;Silva et al, 2012) and the Mid Atlantic Ridge (MAR) Cousins et al, 2013). The IUCN (World Con servation Union) classifies Jensen's skate as "Least concern" (Kulka et Goodwin, 2012), i.e.…”

Section: Introductionmentioning

confidence: 99%

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New data on the rare deep-sea skate Amblyraja jenseni (Rajidae) from the North Atlantic Ocean

Орлов

Cotton

2015

J. Ichthyol.

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In this study we present the most complete description of color variation, morphometric and mer istic characters for the rare deep sea North Atlantic Jensen's skate Amblyraja jenseni, based on analyses of a wide range of accessible material. Comparisons of external morphological characters of male and female specimens of varying sizes and from different regions of the North Atlantic indicated regional morphological differences likely due to prolonged geographic isolation of local populations of this species. The vast majority of individuals exhibited a "dark" coloration, with a less common "light" coloration observed particularly among skates from the waters of the northeast and northwest Atlantic. Only dark colored skates were found in the waters of the Mid Atlantic Ridge. We also provide new data on the habitat, vertical distribution and size of the Jensen's skate.

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“…While no specific dietary information is available for S. oregoni, Synaphobranchus kaupi, a congener in the northeast Atlantic, was found to consume crustaceans, fish and cephalopods (Marques, 1998). Members of the Synaphobranchus genus are also considered to be facultative scavengers (Cousins et al, 2013;Yeh & Drazen, 2009). They may also be reliant on other scavenger species with better dentition than themselves for access to large food items.…”

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confidence: 99%

Investigating Trophic Interactions of Deep-sea Animals (Sharks, Teleosts, and Mobile scavengers) in the Gulf of Mexico Using Stable Isotope Analysis

Churchill¹

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Bathyal demersal fishes of Charlie-Gibbs Fracture Zone region (49–54°N) of the Mid-Atlantic Ridge: II. Baited camera lander observations

Cited by 19 publications

References 30 publications

Benthic megafauna on steep slopes at the Northern Mid‐Atlantic Ridge

Benthic megafauna on steep slopes at the Northern Mid‐Atlantic Ridge

New data on the rare deep-sea skate Amblyraja jenseni (Rajidae) from the North Atlantic Ocean

Investigating Trophic Interactions of Deep-sea Animals (Sharks, Teleosts, and Mobile scavengers) in the Gulf of Mexico Using Stable Isotope Analysis

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