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  • 1
    Online Resource
    Online Resource
    The fate of cetacean carcasses in the deep sea: observations on consumption rates and succession of scavenging species in the abyssal north-east Atlantic Ocean
    The Royal Society ; 1998
    In:  Proceedings of the Royal Society of London. Series B: Biological Sciences Vol. 265, No. 1401 ( 1998-06-22), p. 1119-1127
    Details
    In: Proceedings of the Royal Society of London. Series B: Biological Sciences, The Royal Society, Vol. 265, No. 1401 ( 1998-06-22), p. 1119-1127
    Type of Medium: Online Resource
    ISSN: 0962-8452 , 1471-2954
    URL: Article
    DOI: 10.1098/rspb.1998.0407
    Language: English
    Publisher: The Royal Society
    Publication Date: 1998
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    SSG: 12
    SSG: 25
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  • 2
    Online Resource
    Online Resource
    Scavenging by megabenthos and demersal fish on the South Georgia slope
    Cambridge University Press (CUP) ; 2002
    In:  Antarctic Science Vol. 14, No. 1 ( 2002-03), p. 16-24
    Details
    In: Antarctic Science, Cambridge University Press (CUP), Vol. 14, No. 1 ( 2002-03), p. 16-24
    Abstract: The scavenging megafauna of the South Georgia and Shag Rocks slope in the south-west Atlantic (625–1519 m) were investigated using autonomous baited camera systems. Two surveys were conducted: the first in 1997 (13 deployments) used a conventional 35 mm stills camera with a 200 J flash, whilst the second in 2000 (15 deployments) used low-light digital video cameras. The scavenging community responded rapidly to the arrival of bait on the sea floor and was dominated by stone crabs (Lithodidae) and toothfish ( Dissostichus eleginoides ). Stone crabs took up residence around the bait until it was consumed, with a maximum number of 108 in the field of view after four hours. The most frequently observed crab species was Paralomis formosa . Paralomis spinosissima, Neolithodes diomedea and Lithodes sp., were also observed. Toothfish were the most frequently observed scavenging fish and were seen during all but one deployment, typically making brief visits (1–2 min) to the bait, but appeared startled by the flash in the 1997 survey. Labriform swimming (sculling with the pectoral fins) was the principal form of locomotion in toothfish (0.22 body lengths (BL) sec −1 ), but they were capable of more rapid sub-carangiform (using caudal trunk and fin) motion (3 BL sec −1 ) when startled. Other scavenging fish observed included the blue-hake Antimora rostrata , grenadiers ( Macrourus spp.), skates, liparids and zoarcids.
    Type of Medium: Online Resource
    ISSN: 0954-1020 , 1365-2079
    URL: Article
    DOI: 10.1017/S0954102002000536
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2002
    detail.hit.zdb_id: 2104104-0
    detail.hit.zdb_id: 1009128-2
    SSG: 12
    SSG: 13
    SSG: 14
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  • 3
    Online Resource
    Online Resource
    Deep‐sea demersal fish species richness in the Porcupine Seabight, NE Atlantic Ocean: global and regional patterns
    Wiley ; 2010
    In:  Marine Ecology Vol. 31, No. 1 ( 2010-03), p. 247-260
    Details
    In: Marine Ecology, Wiley, Vol. 31, No. 1 ( 2010-03), p. 247-260
    Abstract: The ichthyofauna of ocean margin regions is characterised by a succession of different species occurring at different depths. This study was aimed at determining whether the resultant pattern of species richness with depth is a consequence of local factors in a given region or whether it simply reflects the global pattern of fish species distribution in the oceans. Along the ocean margin of the temperate NE Atlantic Ocean in the Porcupine Seabight and Abyssal Plain region, 48°–53°N, a total of 108 demersal fish species were identified from 187 trawls at depths from 240 to 4865 m. Fitting of species accumulation curves predicted an asymptote of 120, indicating that the fauna is 90% described. Baited cameras detected 22 scavenging species with a predicted asymptote of 24 species. Scavenging species represented a constant 22.7% (SD 3.5%) of the total species richness throughout the depth range studied. Species richness per trawl varied between a maximum of 16 at 1600 m and 4 on the abyssal plain 〉  4000 m with no significant influence of sea floor slope (a measure of topographic heterogeneity). Total species richness was 48 at 1600 m and 10 on the abyssal plain. There is a clear transition between slope species above 3000 m and abyssal species below. The depth at which peak species richness occurs (1100–2000 m) coincides with the depth of the permanent thermocline, presence of Mediterranean overflow water (MOW), seasonally strong currents, resuspension of particulate matter, high biomass of benthic filter feeders and pelagic biomass impinging on the slope. We suggest that these factors increase habitat and resource heterogeneity, thus supporting a wider range of fish species. The local pattern of species richness was compared with the global distribution of maximum depths of marine fish species from FishBase. Globally all three Classes of fishes, Agnatha, Chondrichthyes and Osteichthyes, showed a logarithmic decrease in species with depth, with the deepest observed species in each class occurring at 3003 m, 4156 m and 8370 m, respectively. In contrast, the local distribution of species maximum depths is idiosyncratic with a mean of 16.6 species maxima per 500 m at 1000–3000 m depth followed by three species per 500 m at 3500–4000 m and 11 species per 500 m at 5000 m. It is concluded that global patterns of species richness, as a source of recruitment, exert a weak influence on local patterns of species richness. Rather, global species richness is the sum of numerous regional and local patterns, each determined by characteristic environmental conditions.
    Type of Medium: Online Resource
    ISSN: 0173-9565 , 1439-0485
    URL: Issue
    URL: Article
    DOI: 10.1111/mae.2010.31.issue-1
    DOI: 10.1111/j.1439-0485.2009.00330.x
    Language: English
    Publisher: Wiley
    Publication Date: 2010
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    detail.hit.zdb_id: 225578-9
    SSG: 12
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  • 4
    Online Resource
    Online Resource
    In situ investigation of burst swimming and muscle performance in the deep-sea fish Antimora rostrata
    Elsevier BV ; 2003
    In:  Journal of Experimental Marine Biology and Ecology Vol. 285-286 ( 2003-2), p. 295-311
    Details
    In: Journal of Experimental Marine Biology and Ecology, Elsevier BV, Vol. 285-286 ( 2003-2), p. 295-311
    Type of Medium: Online Resource
    ISSN: 0022-0981
    URL: Article
    DOI: 10.1016/S0022-0981(02)00534-8
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2003
    detail.hit.zdb_id: 410283-6
    detail.hit.zdb_id: 1483103-X
    SSG: 12
    SSG: 7,20
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  • 5
    Online Resource
    Online Resource
    A review of the spatial extent of fishery effects and species vulnerability of the deep-sea demersal fish assemblage of the Porcupine Seabight, Northeast Atlantic Ocean (ICES Subarea VII)
    Oxford University Press (OUP) ; 2011
    In:  ICES Journal of Marine Science Vol. 68, No. 2 ( 2011-01-01), p. 281-289
    Details
    In: ICES Journal of Marine Science, Oxford University Press (OUP), Vol. 68, No. 2 ( 2011-01-01), p. 281-289
    Abstract: Priede, I. G., Godbold, J. A., Niedzielski, T., Collins, M. A., Bailey, D. M., Gordon, J. D. M., and Zuur, A. F. 2011. A review of the spatial extent of fishery effects and species vulnerability of the deep-sea demersal fish assemblage of the Porcupine Seabight, Northeast Atlantic Ocean (ICES Subarea VII). – ICES Journal of Marine Science, 68: 281–289. We review information from scientific trawl surveys carried out between 1977 and 2002 in the Porcupine Seabight and Abyssal Plain area of the Northeast Atlantic (240–4865 m water depth). Since the late 1980s, commercial bottom-trawl fisheries targeting mainly roundnose grenadier (Coryphaenoides rupestris), black scabbardfish (Aphanopus carbo), and orange roughy (Hoplostethus atlanticus) have been operating at depths of 500–1500 m, intersecting the depth ranges of 77 demersal fish species that would therefore be vulnerable to fishery effects. Comparisons of trawls pre-1989 and post-1997 indicate a significant decrease in total abundance of demersal fish down to 2500 m. Detailed analyses of the 15 most-abundant species showed that nine species with depth ranges within the commercial fishing depth have decreased in abundance. Other species were either not affected (Bathypterois dubius) or only affected at the shallow end of their range (Coryphaenoides guentheri). Species with a minimum depth of occurrence & gt;1500 m (Coryphaenoides armatus and Coryphaenoides leptolepis) increased in abundance over part of their depth range. Decreases in abundance are probably caused by commercial fishing activities, an effect that is transmitted downslope by removal of fish at the shallow end of their depth range, resulting in declines at the deeper end of the depth range. The estimated fishery area is ca. 52 000 km2, but the potential impact probably extends to ca. 142 000 km2 and to many non-target species.
    Type of Medium: Online Resource
    ISSN: 1095-9289 , 1054-3139
    URL: Article
    DOI: 10.1093/icesjms/fsq045
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2011
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    detail.hit.zdb_id: 1468003-8
    detail.hit.zdb_id: 29056-7
    SSG: 12
    SSG: 21,3
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  • 6
    Online Resource
    Online Resource
    Behavioural observations on the scavenging fauna of the Patagonian slope
    Cambridge University Press (CUP) ; 1999
    In:  Journal of the Marine Biological Association of the United Kingdom Vol. 79, No. 6 ( 1999-12), p. 963-970
    Details
    In: Journal of the Marine Biological Association of the United Kingdom, Cambridge University Press (CUP), Vol. 79, No. 6 ( 1999-12), p. 963-970
    Abstract: The scavenging fauna of the Patagonian slope (900–1750 m), east of the Falkland Islands was investigated using the Aberdeen University Deep Ocean Submersible (AUDOS), an autonomous baited camera vehicle designed to photograph scavenging fish and invertebrates. The AUDOS was deployed on ten occasions in Falkland waters. Nine experiments were of 10–14 h duration and baited with 800 g of squid and one experiment lasted six days, baited with a 10 kg toothfish ( Dissostichus eleginoides ). Analysis of photographs revealed considerable patchiness in the composition of the scavenging fauna. Hagfish ( Myxine cf. fernholmi ) dominated three of the shallower experiments including the 6-d experiment, arriving quickly from down-current, holding station at the bait and consuming the soft tissues first, with consumption rates of up to 200 g h −1 . In the other experiments, stone crabs (Lithodidae), the blue-hake ( Antimora rostrata ) and amphipods were the primary consumers, but the rate of bait consumption was lower. Patagonian toothfish ( D. eleginoides ) were attracted to the bait at each experiment, but did not attempt to consume the bait. The patchiness in the fauna may be a result of depth, substratum and topography, but in general the rapid response of the scavenging fauna indicates that carrion is rapidly dispersed, with little impact on the local sediment community.
    Type of Medium: Online Resource
    ISSN: 0025-3154 , 1469-7769
    URL: Article
    DOI: 10.1017/S0025315499001198
    RVK:
    WA 15000
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 1999
    detail.hit.zdb_id: 1491269-7
    detail.hit.zdb_id: 281325-7
    SSG: 12
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