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Population biology and ageing of the deep water sharks Galeus melastomus, Centroselachus crepidater and Apristurus aphyodes from the Rockall Trough, north-east Atlantic

Published online by Cambridge University Press:  26 April 2013

D.M. Moore
Affiliation:
School of Ocean Sciences, College of Natural Sciences, Bangor University, Menai Bridge, Anglesey, LL59 5AB, UK
F.C. Neat
Affiliation:
Marine Scotland, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen, AB11 9DB, UK
I.D. McCarthy*
Affiliation:
School of Ocean Sciences, College of Natural Sciences, Bangor University, Menai Bridge, Anglesey, LL59 5AB, UK
*
Correspondence should be addressed to: I.D. McCarthy, School of Ocean Sciences, College of Natural Sciences, Bangor University, Menai Bridge, Anglesey, LL59 5AB, UK email: i.mccarthy@bangor.ac.uk

Abstract

This study presents new information on the population biology, growth and maturation schedules of Galeus melastomus, Centroselachus crepidater and Apristurus aphyodes sampled from the Rockall Trough, a region where deep sea fishing activity has been prevalent for the past 40 years and where shark by-catch is considerable. Both G. melastomus and C. crepidater showed significant sexual size dimorphism with females attaining a greater length and mass. The size (L50) at first maturity was estimated to be 55.6 cm total length (TL) for males and 59.7 cm TL for females in G. melastomus, 57.2 cm TL for males and 75.4 cm TL for females in C. crepidater and 49.0 cm TL for males and 56.9 cm TL for females in A. aphyodes. This represents the first TL50 analysis for Apristurus aphyodes globally. Sharks were aged using a technique which employed cobalt (II) nitrate to stain growth bands in vertebra centra. Band pairs were successfully viewed in G. melastomus and pair counts ranged from 0 to 5 in males and 2 to 7 in females. A higher asymptotic length was deduced from the von Bertalanffy growth equation for females than males (females: L = 69.3 cm; males: L = 60.8 cm) in G. melastomus. Staining was unsuccessful in C. crepidater and A. aphyodes and age could not be determined using this technique.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2013 

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References

REFERENCES

Bailey, D.M., Collins, M.A., Gordon, J.D.M., Zuur, A.F. and Priede, I.G. (2009) Long-term changes in deep-water fish populations in the northeast Atlantic: a deeper reaching effect of fisheries? Proceedings of the Royal Society of London. Series B: Biological Sciences. 276, 19651969.Google ScholarPubMed
Barker, M.J. and Schluessel, V. (2005) Managing global shark fisheries: suggestions for prioritizing management strategies. Aquatic Conservation: Marine and Freshwater Ecosystems 15, 325347.CrossRefGoogle Scholar
Basson, M., Gordon, J.D.M., Large, P., Lorance, P., Pope, J. and Rackham, B. (2002) The effects of fishing on deepwater fish species to the West of Britain. Joint Nature Conservation Committee Report No. 324. Peterborough: JNCC, 150 pp.Google Scholar
Beamish, R.J. and Fournier, D.A. (1981) A method for comparing the precision of a set of age determinations. Canadian Journal of Fisheries and Aquatic Sciences 38, 982983.CrossRefGoogle Scholar
Blackwell, R.G. (2010) Distribution and abundance of deepwater sharks in New Zealand waters, 2000–01 to 2005–06. New Zealand Aquatic Environment and Biodiversity Report No. 57. Wellington: Ministry of Fisheries.Google Scholar
Borges, T.C., Olim, S. and Erzini, K. (2003) Weight–length relationship for fish species discarded in commercial fisheries of the Algarve (southern Portugal). Journal of Applied Ichthyology 19, 394396.CrossRefGoogle Scholar
Cailliet, G.M., Martin, L.K., Kusher, D., Wolf, P. and Welden, B.A. (1983) Techniques for enhancing vertebral bands in age estimation of California elasmobranchs. In Prince, E.D. and Pulos, L.M. (eds) Proceedings of the international workshop on age determination of oceanic pelagic fishes: tunas, billfishes, and sharks. US Department of Commerce, NOAA Tech. Rep. NMFS 8, pp. 157165.Google Scholar
Cailliet, G.M. (1990) Elasmobranch age determination and verification: an updated review. In Pratt, H.L., Gruber, S.H. and Taniuchi, T. (eds) Elasmobranchs as living resources: advances in the biology, ecology, systematic, and status of the fisheries. US Department of Commerce, NOAA Technical Report 90, pp. 157165.Google Scholar
Cailliet, G.M., Smith, W.D., Mollet, H.F. and Goldman, K.J. (2006) Age and growth studies of chondrichthyan fishes: the need for consistency in terminology, verification, validation, and growth function fitting. Environmental Biology of Fishes 77, 211228.CrossRefGoogle Scholar
Campana, S.E. (2001) Accuracy, precision and quality control in age determination, including a review of the use and abuse of age validation methods. Journal of Fish Biology 59, 197242.CrossRefGoogle Scholar
Campbell, N., Neat, F., Burns, F. and Kunzlik, P. (2011) Species richness, taxonomic diversity, and taxonomic distinctness of the deep-water demersal fish community on the Northeast Atlantic continental slope (ICES Subdivision VIa). ICES Journal of Marine Science 68, 365376.CrossRefGoogle Scholar
Cannizzaro, L., Rizzo, P., Levi, D. and Gancitano, S. (1995) Age determination and growth of Squalus blainvillei (Risso, 1826). Fisheries Research 23, 113125.CrossRefGoogle Scholar
Capapé, C., Reynaud, C., Vergne, Y and Quignard, J.P. (2008) Biological observations on the smallspotted catshark Scyliorhinus canicula (Chondrichthyes: Scyliorhinidae) off the Languedocian coast (southern France, northern Mediterranean). Journal of Aquatic Science 3, 282289.Google Scholar
Carrasón, M., Stefanescu, C. and Cartes, J.E. (1992) Diets and bathymetric distributions of two bathyal sharks of the Catalan deep sea (western Mediterranean). Marine Ecology Progress Series 82, 2130.CrossRefGoogle Scholar
Clark, M.R. and King, K.J. (1989) Deepwater fish resources off the North Island, New Zealand: results of a trawl survey, May 1985–June 1986. Fisheries Technical Report No. 11. Wellington: Fisheries Research Centre.Google Scholar
Clarke, M.W., Connoly, P.I. and Bracken, J.J. (2001) Biology of exploited deep-water sharks west of Ireland and Scotland. North Atlantic Fisheries Organisation Scientific Council Report. 01/108. Serial No. N4496, 18 pp.Google Scholar
Clarke, M.W., Connoly, P.I. and Bracken, J.J. (2002) Catch, discarding, age estimation, growth and maturity of the squalid shark Deania calcea West and North of Ireland. Fisheries Research 56, 139153.CrossRefGoogle Scholar
Conover, W.J. (1971) Practical nonparametric statistics. New York: John Wiley & Sons, 474 pp.Google Scholar
Correia, J.P. and Figueiredo, I. (1997) A modified decalcification technique for enhancing growth bands in deep-coned vertebrae of elasmobranchs. Environmental Biology of Fishes 50, 225230.CrossRefGoogle Scholar
Cortés, E. (2000) Life history patterns and correlations in sharks. Reviews in Fisheries Science 8, 299344.CrossRefGoogle Scholar
Costa, M.E., Erzini, K. and Borges, T.C. (2005) Reproductive biology of the blackmouth catshark, Galeus melastomus, off the south coast of Portugal. Journal of the Marine Biological Association of the United Kingdom 85, 11731183.CrossRefGoogle Scholar
Cox, G.J. and Francis, M. (1997) Sharks and rays of New Zealand (Volume 24). Christchurch: Canterbury University Press, 64 pp.Google Scholar
Daley, R.K., Stevens, J.D. and Graham, K. (2002) Catch analysis and productivity of the deepwater dogfish resource in southern Australia. CSIRO Marine Research, Fisheries Research and Development Corporation (FRDC), and NSW Fisheries, Australia, FRDC Project No. 1998/108.Google Scholar
Dulvy, N.K. and Reynolds, J.D. (1997) Evolutionary transitions among egg-laying, live-bearing and maternal inputs in sharks and rays. Proceedings of the Royal Society of London. Series B: Biological Sciences 264, 13091315.CrossRefGoogle Scholar
Fanelli, E., Rey, J., Torres, P. and de Sola, L.G. (2009) Feeding habits of blackmouth catshark, Galeus melastomus, and velvet belly lantern shark, Etmopterus spinax, in the western Mediterranean. Journal of Applied Ichthyology 25, 8393.CrossRefGoogle Scholar
Froese, R. (2006) Cube law, condition factor and weight–length relationships: history, meta-analysis and recommendations. Journal of Applied Ichthyology 22, 241253.CrossRefGoogle Scholar
Gennari, E. and Scacco, U. (2007) First age and growth estimates in the deep water shark, Etmopterus spinax (Linnaeus, 1758), by deep coned vertebral analysis. Marine Biology 152, 12071214.CrossRefGoogle Scholar
Girard, M. and Du Buit, M.H. (1999) Reproductive biology of two deep-water sharks from the British Isles, Centroscymnus coelolepis and Centrophorus squamosus (Chondrichthyes: Squalidae). Journal of the Marine Biological Association of the United Kingdom 79, 923931.CrossRefGoogle Scholar
Gordon, J.D.M. (2003) The Rockall Trough, Northeast Atlantic: the cradle of deep-sea biological oceanography that is now being subjected to unsustainable fishing activity. Journal of Northwest Atlantic Fishery Science 31, 5783.CrossRefGoogle Scholar
Heesen, H.J.L. (2003) Development of Elasmobranch Assessments, DELASS. Final Report of European Commission DG Fish Study. Contract 99/055.Google Scholar
Heymans, J.J., Howell, K.L., Ayers, M., Burrows, M.T., Gordon, J.D.M., Jones, E.G. and Neat, F. (2011) Do we have enough information to apply the ecosystem approach to management of deep-sea fisheries? An example from the West of Scotland. ICES Journal of Marine Science 68, 265280.CrossRefGoogle Scholar
International Council for the Exploration of the Sea (2010) Report of the Working Group on Elasmobranch Fishes (WGEF), 22–29 June 2010, Horta, Portugal. International Council for the Exploration of the Sea (CM Papers and Reports) CM 2010/ACOM:19. 558 pp.Google Scholar
International Game Fish Association (2001) Database of IGFA angling records until 2001. Fort Lauderdale, TX: IGFA.Google Scholar
Irvine, S.B., Stevens, J.D. and Laurensen, L.J.B. (2006) Surface bands on deepwater squalid dorsal-fin spines: an alternative method for ageing Centroscymnus crepidater. Canadian Journal of Fisheries and Aquatic Sciences 63, 617627.CrossRefGoogle Scholar
Jones, B.C. and Geen, G.H. (1977) Food and feeding of spiny dogfish (Squalus acanthias) in British Colombia waters. Journal of the Fisheries Research Board of Canada 34, 20672078.Google Scholar
Jones, E.G., Tselepides, A., Bagley, P.M., Collins, M.A. and Priede, I.G. (2003) Bathymetric distribution of some benthic and benthopelagic species attracted to baited cameras and traps in the deep eastern Mediterranean. Marine Ecology Progress Series 251, 7580.CrossRefGoogle Scholar
Jones, E., Beare, D., Dobby, H., Trinkler, N., Burns, F., Peach, K. and Blasdale, T. (2005) The potential impact of commercial fishing activity on the ecology of deepwater Chondrichthyans from the west of Scotland. ICES CM 2005/N:16Google Scholar
Ketchen, K.S. (1986) The spiny dogfish (Squalus acanthias) fishery in northeast Pacific and a history of its utilisation. Canadian Special Publication of Fisheries and Aquatic Sciences 88. Department of Fisheries and Oceans, Ottawa, 78 pp.Google Scholar
King, M. (2007) Fisheries biology, assessment and management. 2nd edition. Oxford: Blackwell Publishing, 382 pp.CrossRefGoogle Scholar
Koslow, J.A., Boehlert, G.W., Gordon, J.D.M., Haedrich, R.L., Lorance, P. and Parin, N. (2000) Continental slope and deep-sea fisheries: implications for a fragile ecosystem. ICES Journal of Marine Science 57, 548557.CrossRefGoogle Scholar
Kyne, P.M. and Simpfendorfer, C.A. (2010) Deepwater chondrichthyans. In Sharks and their relatives II: biodiversity, adaptive physiology, and conservation. CRC Marine Biology Series. Boca Raton, FL: CRC Press, pp. 37113.CrossRefGoogle Scholar
Large, P.A., Hammer, C., Bergstad, O.A., Gordon, J.D.M. and Lorance, P. (2003) Deep-water fisheries of the Northeast Atlantic: II assessment and management approaches. Journal of Northwest Atlantic Fishery Science 31, 151163.CrossRefGoogle Scholar
Last, P.R. and Stevens, J.D. (2009). Sharks and rays of Australia. 2nd edition. Cambridge, MA: Harvard University Press, 644 pp.Google Scholar
Mendes, B., Fonseca, P. and Campos, A. (2004) Weight–length relationships for 46 fish species off the Portuguese west coast. Journal of Applied Ichthyology 20, 355361.CrossRefGoogle Scholar
Merella, P., Quetglas, A., Alemany, F. and Carbonell, A. (1997) Length–weight relationship of fishes and cephalopods from the Balearic Islands (western Mediterranean). Naga ICLARM Q 20, 6668.Google Scholar
Musick, J.A., Burgess, G., Cailliet, G., Camhi, M. and Fordham, S. (2000) Management of sharks and their relatives (Elasmobranchii). Fisheries. 25, 913.2.0.CO;2>CrossRefGoogle Scholar
Myers, R.A. and Worm, B. (2005) Extinction, survival or recovery of large predatory fishes. Philosophical Transactions of the Royal Society, B 360, 1320.CrossRefGoogle ScholarPubMed
Nakaya, K. and Stehmann, M. (1998) A new species of deepwater catshark, Apristurus aphyodes n. sp., from the eastern North Atlantic (Chondrichthyes: Carcharhiniformes: Scyliorhinidae). Archive of Fishery and Marine Research 46, 7790.Google Scholar
Neat, F., Burns, F. and Drewery, J. (2008) The deepwater ecosystem of the continental slope and seamounts of the Rockall Trough: a report on the ecology and biodiversity based on FRS surveys. Fisheries Research Services Internal Report No 02/08. Aberdeen: Fisheries Research Services.Google Scholar
Neat, F., Kynoch, R., Drewery, J. and Burns, F. (2010) Deepwater trawl survey manual. Marine Scotland Science Report 03/10. Aberdeen: Marine Scotland—Science.Google Scholar
Olaso, I., Velasco, F., Sánchez, F., Serrano, A., Rodríguez-Cabello, C. and Cendero, O. (2005) Trophic relations of lesser-spotted catshark (Scyliorhinus canicula) and blackmouth catshark (Galeus melastomus) in the Cantabrian Sea. Journal of Northwest Atlantic Fishery Science 35, 481494.CrossRefGoogle Scholar
Rey, J., de Sola, L.G. and Massutí, E. (2005) Distribution and biology of the blackmouth catshark Galeus melastomus in the Alboran Sea (Southwestern Mediterranean). Journal of Northwest Atlantic Fishery Science 35, 215223.CrossRefGoogle Scholar
Rinelli, P., Bottari, T., Florio, G., Romeo, T., Giordano, D. and Greco, S. (2005) Observations on distribution and biology of Galeus melastomus (Chondrichthyes, Scyliorhinidae) in the southern Tyrrhenian Sea (central Mediterranean). Cybium 29, 4146.Google Scholar
Stehmann, M.F.W. (2002) Scales of maturity stages for sharks, rays and skates, and chimaeras. Archive of Fishery and Marine Research 50, 3048.Google Scholar
Stevens, J.D., Bonfil, R., Dulvy, N.K. and Walker, P.A. (2000) The effects of fishing on sharks, rays, and chimaeras (chondrichthyans), and the implications for marine ecosystems. ICES Journal of Marine Science 57, 476494.CrossRefGoogle Scholar
Wintner, S.P. (2000) Preliminary study of vertebral growth rings in the whale shark, Rhincodon typus, from the east coast of South Africa. Environmental Biology of Fishes 59, 441451.CrossRefGoogle Scholar
Zar, J.H. (1996) Biostatistical analysis. 3rd edition. Upper Saddle River, NJ: Prentice Hall, 662 pp.Google Scholar