Biology of the conger eel Conger oceanicus in the Mid-Atlantic Bight

Levy, Alon M.; Able, Kenneth W.; Grimes, Churchill B.; Hood, Peter

doi:10.1007/bf00391550

Cited by 15 publications

(6 citation statements)

References 6 publications

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“…Ledges, undercuts, and holes that are often associated with high vertical proWle provide refugia from strong currents and predators as well as sites for reproduction and feeding (e.g., Hixon 1991;Menard et al 2007). Conger oceanicus is also known to forage at night and utilize refugia during the day (Levy et al 1988). In addition to burrowing in thickets of L. pertusa, C. oceanicus inhabits tileWsh burrows, "pueblo habitats" in the walls of submarine canyons (Levy et al 1988), and shipwreck components (pers.…”

Section: Species-habitat Associationsmentioning

confidence: 99%

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Megafaunal-habitat associations at a deep-sea coral mound off North Carolina, USA

et al. 2012

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Deep-sea corals provide important habitat for many organisms; however, the extent to which Wshes and other invertebrates are aYliated with corals or other physical variables is uncertain. The Cape Fear coral mound oV North Carolina, USA (366-463 m depth, 33° 34.4ЈN, 76°2 7.8ЈW) was surveyed using multibeam sonar and the Johnson-Sea-Link submersible. Multibeam bathymetric data (2006) were coupled with in situ video data (2002)(2003)(2004)(2005) to deWne habitat associations of 14 dominant megafauna at two spatial scales. Results suggested greater habitat speciWcity of deep-reef fauna than previously documented, with Wshes showing greater aYnity for certain habitat characteristics than most invertebrates. High vertical proWle, degree of coral coverage, and topographic complexity inXuenced distributions of several species, including Beryx decadactylus, Conger oceanicus, and Novodinia antillensis on the smaller scale (30 £ 30 m). On the broad scale (170 £ 170 m), several suspension feeders (e.g., N. antillensis, anemones), detritivores (Echinus spp.), and mesopelagic feeders (e.g., Beryx decadactylus, Eumunida picta) were most often found on the south-southwest facing slope near the top of the mound. Transient reef species, including Laemonema barbatulum and Helicolenus dactylopterus, had limited aYliations to topographic complexity and were most often on the mound slope and base. Megafauna at deep-water reefs behave much like shallow-water reef fauna, with some species strongly associated with certain Wne-scale habitat attributes, whereas other species are habitat generalists. Documenting the degree of habitat specialization is important for understanding habitat functionality, predicting faunal distributions, and assessing the impacts of disturbance on deep-reef megafauna.

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Section: Species-habitat Associationsmentioning

confidence: 99%

“…Conger oceanicus is also known to forage at night and utilize refugia during the day (Levy et al 1988). In addition to burrowing in thickets of L. pertusa, C. oceanicus inhabits tileWsh burrows, "pueblo habitats" in the walls of submarine canyons (Levy et al 1988), and shipwreck components (pers. observ.).…”

Section: Species-habitat Associationsmentioning

confidence: 99%

Megafaunal-habitat associations at a deep-sea coral mound off North Carolina, USA

et al. 2012

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“…Congers are carnivores that feed mainly at night and their diet consist mainly of bottom-living fishes, crustacea and cephalopods (Saldanha et al, 1995). Although no significant seasonal variations were found in the alimentary pattern of C. conger, the diet is modified according to the depth (Cau and Manconi, 1984) and probably reflects the differences in prey avaibility (Levy et al, 1988).…”

Section: Introductionmentioning

confidence: 99%

Age, growth and reproductive biology of the European conger eel (Conger conger) from the Atlantic Iberian waters

2009

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“…While conger eels are an important component of the coastal and outer continental shelf marine ecosystem, very little is known about their reproduction. Conger oceanicus has been studied from north American coastal waters up to the edge of the continental shelf Levy et al, 1988), but data are still lacking on C. conger.…”

Section: Introductionmentioning

confidence: 99%

Reproductive biology of the conger eel from the south coast of Brittany, France and comparison with the European eel

Sbaihi¹

2001

Journal of Fish Biology

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The gonadosomatic indices (I G ) of female conger eel Conger conger, aged between 2 and 11 years postmetamorphosis, ranged between 0·04 and 4·78 and were correlated with both age and body length. Microscopical examination of the gonads showed immature ovaries at two main stages of oocyte development, pre-vitellogenic oocytes for I G <1, and oocytes at an early vitellogenic stage (lipid vesicle stage) for I G >1. The immaturity of the conger eels sampled in Concarneau Bay indicates that this species probably spawns in deeper oceanic waters. Radioimmunoassays (RIA) of sex steroids gave low serum levels of oestradiol and of 11-ketotestosterone, but higher levels of testosterone correlated with increase in I G . Immunoenzymatic assay (ELISA) indicated low serum levels of vitellogenin (VtG), which were significantly correlated with I G . The pre-vitellogenic and early vitellogenic stages observed in the coastal C. conger were similar to the oocyte stages found in the European eel Anguilla anguilla, at the yellow and silver phases of its life cycle respectively. However, other morpho-functional changes, associated with silvering in Anguilla species, such as the increase in ocular index, and regression of the digestive tract, did not occur at the early vitellogenic stage in conger eels. 2001 The Fisheries Society of the British Isles

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Biology of the conger eel Conger oceanicus in the Mid-Atlantic Bight

Cited by 15 publications

References 6 publications

Megafaunal-habitat associations at a deep-sea coral mound off North Carolina, USA

Megafaunal-habitat associations at a deep-sea coral mound off North Carolina, USA

Age, growth and reproductive biology of the European conger eel (Conger conger) from the Atlantic Iberian waters

Reproductive biology of the conger eel from the south coast of Brittany, France and comparison with the European eel

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