Notes on a remotely operated vehicle survey to describe reef ichthyofauna and habitats – Agulhas Bank, South Africa

Authors

  • Mapula S. Makwela Fisheries Research and Development, Department of Agriculture, Forestry and Fisheries, Roggebaai, South Africa
  • Sven E. Kerwath Fisheries Research and Development, Department of Agriculture, Forestry and Fisheries, Roggebaai, South Africa; Department of Biological Sciences, University of Cape Town, Rondebosch, South Africa
  • Albrecht Götz Elwandle Node, South African Environmental Observation Network (SAEON), Grahamstown, South Africa; Department of Ichthyology and Fisheries Science, Rhodes University, Grahamstown, South Africa; Zoology Department, Nelson Mandela Metropolitan University, Port Elizabeth, South Africa
  • Kerry Sink South African National Biodiversity Institute, Claremont, South Africa
  • Toufiek Samaai Department of Environmental Affairs, Oceans and Coasts, Chief Directorate, Marine Biodiversity and Ecosystem Research, Victoria and Alfred Waterfront, Cape Town, South Africa; Marine Research Institute, University of Cape Town, Rondebosch, South Afric
  • Christopher G. Wilke Fisheries Research and Development, Department of Agriculture, Forestry and Fisheries, Roggebaai, South Africa

Keywords:

Remotely Operated Vehicle (ROV), marine biodiversity, temperate reef habitat, line fishery, ichthyofauna, South Africa

Abstract

Background: Despite their ecological and economic importance, reef habitats on the central Agulhas Bank, off the southern tip of Africa, remain poorly studied. The ichthyofauna of these habitats cannot be surveyed using trawl gear.
Objective: Preliminary assessment of the use of a remotely operated vehicle (ROV) to investigate the ichthyofauna associated with deep reef habitats on the central Agulhas Bank.
Method: Underwater visual surveys were carried out during ROV dives (maximum duration 60 minutes; area covered approximately 800 m2; maximum dive depth 100 m).
Results & discussion: The number of detected fish species (36) compares well with that reported from fishing surveys and commercial fisher data. Most (68%) fishes appeared to be undisturbed by the ROV. Species saturation was reached after a maximum of 135 minutes survey time, but species numbers increased and saturation times shortened (34 minutes minimum) with the introduction of bait.
Conclusion: ROV surveys may represent a non-extractive alternative to assess demersal ichthyofaunal diversity in relation to habitat structure and benthic cover on temperate reefs around South Africa.

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References

Assis, J., Claro, B., Ramos, A., Boavida, J. & Serrão, E.A., 2013, ‘Performing fish counts with a wide-angle camera, a promising approach reducing divers’ limitations’, Journal of Experimental Marine Biology and Ecology 445, 93–98. http://dx.doi. org/10.1016/j.jembe.2013.04.007

Bernard, A.T.F., Götz, A., Parker, D., Heyns, E., Halse, S., Riddin, N.A. et al., 2014, ‘New possibilities for research on reef fish across the continental shelf of South Africa’, South African Journal of Science 110, 9–10. http://dx.doi.org/10.1590/sajs.2014/a0079

Cappo, M., Speare, P. & De’ath, G., 2004, ‘Comparison of baited remote underwater video stations (BRUVS) and prawn (shrimp) trawls for assessments of fish biodiversity in inter-reefal areas of the Great Barrier Reef Marine Park’, Journal of Experimental Marine Biology and Ecology 302, 123–152. http://dx.doi.org/10.1016/j.jembe. 2003.10.006

Cappo, M., Speare, P. & De’ath, G., 2007, ‘Inter-reef vertebrate communities of the Great Barrier Reef Marine Park determined by baited remote underwater video stations’, Marine Ecology Progress Series 350, 209–221. http://dx.doi.org/10.3354/meps07189

Götz, A., Kerwath, S.E., Attwood, C.G. & Sauer, W.H.H., 2009, ‘Effects of fishing on a temperate reef community in South Africa 2: Benthic invertebrates and algae’, African Journal of Marine Science 31(2), 253–262. http://dx.doi.org/10.2989/ AJMS.2009.31.2.13.885

Götz, A., Kerwath, S.E., Samaai, T., Da Silva, C. & Wilke, C.G., 2014, ‘An exploratory investigation of the fish communities associated with reefs on the central Agulhas Bank, South Africa’, African Zoology 49, 253–264. http://dx.doi.org/10.3377/ 004.049.0205

Harvey, E.S., Cappo, M., Butler, J.J., Hall, N. & Kendrick, G.A., 2007, ‘Bait attraction affects the performance of remote underwater video stations in assessment of demersal fish community structure’, Marine Ecology Progress Series 350, 245–254. http://dx.doi.org/10.3354/meps07192

Japp, D.W., Sims, P. & Smale, M.J., 1994, ‘A review of the fish resources of the Agulhas Bank’, South African Journal of Science 90, 123–134.

Roberts, M.A., Ribbink, A.J., Morris, T., van den Berg, M.A., Engelbrecht, D.C. & Harding, R.T., 2006, ‘Oceanographic environment of the Sodwana Bay coelacanths (Latimeria chalumnae), South Africa’, South African Journal of Science 102, 435–443.

Ross, S.W. & Quattrini, A.M., 2007, ‘The fish fauna associated with deep coral banks off southeastern United States’, Deep-Sea Research I 54, 975–1007. http://dx.doi. org/10.1016/j.dsr.2007.03.010

Samaai, T., Janson, L. & Kelly, M., 2012, ‘New species of Latrunculia from the Agulhas shelf, South Africa, with designation of a type species for subgenus Biannulata (Demospongiae, Poecilosclerida, Latrunculiidae)’, Zootaxa 3395, 33–45.

Sink, K.J., Atkinson, L.J., Kerwath, S. & Samaai T., 2010, Assessment of offshore benthic biodiversity on the Agulhas Bank and the potential role of petroleum infrastructure in offshore spatial management, Report prepared for WWF South Africa and PetroSA through a SANBI initiative. South African National Biodiversity Institute, Pretoria, 77 pp.

Sink, K.J., Holness, S., Harris, L., Majiedt, P., Atkinson, L.J., Robinson, T. et al., 2012, National biodiversity assessment 2011: Technical Report: Volume 4: Marine and Coastal Component. South African National Biodiversity Institute, Pretoria, 325 pp.

Smale, M.J., Roel, B.A., Badenhorst, A. & Field, J.G., 1993, ‘Analysis of the demersal community of fish and cephalopods on the Agulhas Bank, South Africa’, Journal of Fish Biology 43, 169–191. http://dx.doi.org/10.1111/j.1095-8649.1993.tb01186.x

Söffker, M., Sloman, K.A. & Hall-Spencer, J.M., 2011, ‘In situ observations of fish associated with coral reefs off Ireland’, Deep-Sea Research I 58, 818–825. http:// dx.doi.org/10.1016/j.dsr.2011.06.002.

Stoner, A.W., Ryer, C.H., Parker, S.J., Auster, P.J. & Wakefield, W.W., 2008, ‘Evaluating the role of fish behaviour in surveys conducted with underwater vehicles’, Canadian Journal of Fisheries and Aquatic Sciences 65, 1230–1243. http://dx.doi. org/10.1139/F08-032

Watson, D.L., Harvey, E.S., Anderson, M.J. & Kendrick, G.A., 2005, ‘A comparison of temperate reef fish assemblages recorded by underwater stereo-video techniques’, Marine Biology 148, 415–425. http://dx.doi.org/10.1007/s00227- 005-0090-6

Widder, E.A., Robison, B.H., Reisenbichler, K.R. & Haddock, S.H.D., 2005, ‘Using red light for in situ observations of deep-sea fishes’, Deep-Sea Research I 52, 2077–2085. http://dx.doi.org/10.1016/j.dsr.2005.06.007

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Published

2016-12-03

How to Cite

Makwela, M. S., Kerwath, S. E., Götz, A., Sink, K., Samaai, T., & Wilke, C. G. (2016). Notes on a remotely operated vehicle survey to describe reef ichthyofauna and habitats – Agulhas Bank, South Africa. Bothalia, African Biodiversity & Conservation, 46(1). Retrieved from https://mail.abcjournal.org/index.php/BothaliaABC/article/view/149

Issue

Vol. 46 No. 1 (2016): Bothalia, African Biodiversity & Conservation

Section

Original research, Reviews, Strategies, Case studies

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Copyright (c) 2016 Mapula S. Makwela, Sven E. Kerwath, Albrecht Götz, Kerry Sink, Toufiek Samaai, Christopher G. Wilke

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This work is licensed under a Creative Commons Attribution 4.0 International License.