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Echotrace classification and spatial distribution of pelagic fish aggregations around drifting fish aggregating devices (DFAD)

Published online by Cambridge University Press:  26 February 2008

Gala Moreno ,
Erwan Josse ,
Patrice Brehmer  and
Leif Nøttestad
Gala Moreno
Affiliation:
AZTI – Tecnalia, Txatxarramendi ugartea z/g, 48395 Sukarrieta, Spain
Erwan Josse
Affiliation:
IRD, Centre de Bretagne/US 004, BP 70, 29280 Plouzané, France
Patrice Brehmer
Affiliation:
IRD, CRHMT/UR 109, 1 avenue Jean Monnet, BP 171, 34203 Sète Cedex, France
Leif Nøttestad
Affiliation:
IMR, PO Box 1870, Nordnes, 5817 Bergen, Norway
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Abstract

This work presents a method to observe pelagic fish around drifting fish aggregating devices (DFADs). A triple-frequency vertical echosounder was employed to observe fish distributions in the vicinity of DFADs. Surveys were conducted in a star pattern that was centred at the DFADs. The objective of the study was to define a methodology for future acoustic studies. This goal was pursued by (i) studying the spatial distribution of fish aggregations, (ii) developing concepts for the grouping of observed aggregations and (iii) developing specifications for future autonomous acoustic tools. For this purpose 5 cruises were carried out in the western Indian Ocean. The multi-frequency approach proved useful as a means of separating acoustic detections into sound-scattering layers (e.g. plankton and micronekton), fish aggregations and individual fish. Fish target strength (TS) was measured. Four types of aggregations were found near DFADs: (i) dense structure (ii) medium structure (iii) loose structure and (iv) structure consisting of separated targets. More than 90% of these structures were found within a radius of 400 m and about 75% within 200 m of the DFADs. The spatial configuration of DFAD fish aggregations appeared to be more dynamic compared to aggregations near moored FADs. The spatial distribution and structure of DFAD aggregations have direct implications for their catchability by tuna purse-seiner. We have carried out the first quantitative acoustic recordings around DFADs, and obtained a better understanding of the spatiotemporal dynamics of fish aggregations around DFADs in the Indian Ocean. Based on this knowledge we are now working on specifications for instrumented buoys that are intended as autonomous data recording observatories for such pelagic environments.

Keywords

Drifting Fish Aggregating DevicesSurvey designMulti-frequencyTuna behaviourSchooling behaviourPelagic ecosystemEchotrace classification
Type
Research Article
Information
Aquatic Living Resources , Volume 20 , Issue 4: Fish Aggregating Devices as Instrumented Observatories of Pelagic Ecosystems , October 2007 , pp. 343 - 356
Copyright
© EDP Sciences, IFREMER, IRD, 2008

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References

Adam, M.S., Sibert, J., Itano, D., Holland, K., 2003, Dynamics of bigeye (Thunnus obesus) and yellowfin (T. albacares) tuna in Hawaii's pelagic fisheries: analysis of tagging data with a bulk transfer model incorporating size-specific attrition. Fish. Bull. 101, 215-228.
Barange, M., Hampton, I., Pillar, S.C., Soule, M.A., 1994, Determination of composition and vertical structure of fish communities using in situ measurements of acoustic target strength. Can. J. Fish. Aquat. Sci. 51, 99-109. CrossRef
Berger L., 2006, Multifrequency analysis using Movies+. Ifremer, Brest.
Berger L., Durand C., Marchalot C., 2001, Movies+ User Manual version 3.3. Ifremer, Brest.
Bertrand A., 1999, Le système {thon-environnement} en Polynésie Française: caractérisation de l'habitat pélagique, étude de la distribution et de la capturabilité des thons par méthodes acoustiques et halieutiques. Thèse Doct. ENSAR, Rennes.
Bertrand, A., Josse, E., 2000, Tuna target-strength related to fish length and swimbladder volume. ICES J. Mar. Sci. 57, 1143-1146. CrossRef
Bertrand, A., Josse, E., Massé, J., 1999a, In situ acoustic target strength measurements of bigeye (Thunnus obesus) and yellowfin tuna (Thunnus albacares) by coupling split-beam echosounder observations and sonic tracking. ICES J. Mar. Sci. 56, 51-60. CrossRef
Bertrand, A., Le Borgne, R., Josse, E., 1999b, Acoustic characterisation of micronekton distribution in French Polynesia. Mar. Ecol. Prog. Ser. 191, 127-140. CrossRef
Brehmer, P., Lafont, T., Georgakarakos, S., Josse, E., Gerlotto, F., Collet, C., 2006, Omnidirectional multibeam sonar monitoring: Applications in fisheries science. Fish Fish. 7, 165-179. CrossRef
Brehmer, P., Gerlotto, F., Laurent, C., Cotel, P., Achury, A., Samb, B., 2007, Schooling behavior of small pelagic fish: phenotypic expression of independent stimuli. Mar. Ecol. Prog. Ser. 334, 263-272. CrossRef
Brill, R.W., Block, B.A., Boggs, C.H., Bigelow, K.A., Freund, E.V., Marcinek, D.J., 1999, Horizontal movements and depth distribution of large adult yellowfin tuna (Thunnus albacares) near the Hawaiian Islands, recorded using ultrasonic telemetry: Implications for the physiological ecology of pelagic fishes. Mar. Biol. 133, 395-408. CrossRef
Castro J.J., Santiago J.A., Santana-Ortega A.T. 2002, A general theory on fish aggregation to floating objects: An alternative to the meeting point hypothesis. Rev. Fish Biol. Fish. 11, 255-277.
Cayré, P., Chabanne, J., 1986, Marquage acoustique et comportement des thons tropicaux (albacore : Thunnus albacares, et listao : Katsuwonus pelamis) au voisinage d'un dispositif concentrateur de poissons. Océanogr. Trop. 21, 167-183.
Cillaurren, E., 1994, Daily fluctuations in the presence of Thunnus albacares and Katsuwonus pelamis around fish aggregating devices anchored in Vanuatu, Oceania. Bull. Mar. Sci. 55, 581–591.
Dagorn, L., Holland, K.N., Itano, D.G., 2007, Behavior of yellowfin (Thunnus albacares) and bigeye (T. obesus) tuna in a network of fish aggregating devices (FADs). Mar. Biol. 151, 595-606. CrossRef
Dempster, T., 2004, Biology of fish associated with moored fish aggregation devices (FADs): implications for the development of a FAD fishery in New South Wales, Australia. Fish. Res. 68, 1-3. CrossRef
Dempster, T., 2005, Temporal variability of pelagic fish assemblages around fish aggregation devices: biological and physical influences. J. Fish Biol. 66, 1237-1260. CrossRef
Diner, N., 2001, Correction on school geometry and density: approach based on acoustic image simulation. Aquat. Living Resour. 14, 211-222. CrossRef
Diner, N., 2007, Evaluating uncertainty in measurements of fish shoal aggregate backscattering cross-section caused by small shoal size relative to beam width. Aquat. Living Resour. 20, 117-121. CrossRef
Diner N., Berger L., 2004, TS data analysis using Movies+ software. Version 4.2. Ifremer, Brest.
Diner N., Marchallot C., Berger L., 2006, Echo-integration by shoal using Movies+ software. Version 4.3. Ifremer, Brest.
Doonan, I.J., Bull, B., Coombs, R.F., 2003, Star acoustic surveys of localized fish aggregations. ICES J. Mar. Sci. 60, 132-146. CrossRef
Doray M., 2006, Sub-surface tuna aggregation within the [moored FAD-large pelagics- environment - fishing] system in Martinique: hierarchical study by acoustic, optic and fishing methods. Thèse doct. ENSAR, Rennes.
Doray, M., Josse, E., Gervain, P., Reynal, L., Chantrel, J., 2006, Acoustic characterisation of pelagic fish aggregations around moored fish aggregating devices in Martinique (Lesser Antilles). Fish. Res. 82, 162-175. CrossRef
Fernandes P.G., Korneliussen R.J., Lebourges-Dhaussy A., Massé J., Iglesias M., Diner N., Ona E., Knutsen T., Gajate J., Ponce R.,2006, The SIMFAMI project: Species Identification Methods from Acoustic Multifrequency Information. Final report to the EC No. Q5RS-2001-02054.
Fonteneau, A., Pallarés, P., Pianet, R., 2000, A worldwide review of purse seine fisheries on FADs. In: Le Gall J.Y., Cayré P., Taquet M. (Eds.), Tuna Fishing and Fish Aggregating Devices Symposium. Actes Colloq. Ifremer 28, 15-35.
Foote K.G. 1982, Optimizing copper sphere for precision calibration of hydroacoustic equipment. J. Acous. Soc. Am. 71, 745-747.
Fréon, P., Dagorn, L., 2000, Review of fish associate behaviour: toward a generalisation of the meeting point hypothesis. Rev. Fish Biol. Fish. 10, 183-207. CrossRef
Gerlotto, F., 1993, Identification and spatial stratification of tropical fish concentrations using acoustic populations, Aquat. Living Resour. 6, 243-254. CrossRef
Gerlotto F., Marchal E., 1987, The concept of acoustic populations: its use for analyzing the results of acoustic cruises. Internat. Symp. Fish. Acoustic, Seattle WA.
Greene, C.H., Wiebe, P.H., Pelkie, C., Popp, J.M., Benfield, M.C., 1998, Three-dimensional acoustic visualization of zooplankton patchiness. Deep Sea Res. II 45, 1201-1217 CrossRef
Holland, K.N., Brill, R.W., Chang, R.K.C., 1990, Horizontal and vertical movements of yellowfin and bigeye tuna associated with fish aggregating devices. Fish. Bull. 88, 493-507.
Josse, E., Bertrand, A., 2000, In situ acoustic target strength measurements of tuna associated with a fish aggregating device. ICES J. Mar. Sci. 57, 911-918. CrossRef
Josse, E., Bertrand, A., Dagorn, L., 1999, An acoustic approach to study tuna aggregated around fish aggregating devices in French Polynesia: methods and validation. Aquat. Living Resour. 12, 303-313. CrossRef
Josse, E., Dagorn, L., Bertrand, A., 2000, Typology and Behaviour of tuna aggregations around fish aggregating devices from acoustic surveys in French Polynesia. Aquat. Living Resour. 12, 303-313. CrossRef
Kakuma S., 2000, Current, catch and weight composition of yellowfin tuna with FADs off Okinawa island, Japan. In: Le Gall J.Y., Cayré P., Taquet M. (Eds.), Tuna Fishing and Fish Aggregating Devices Symposium. Actes Colloq. Ifremer 28, pp. 492-501.
Klimley, A.P., Holloway, C.F., 1999, School fidelity and homing synchronicity of yellowfin tuna, Thunnus albacares. Mar. Biol. 133, 307-317.
MacLennan D.N., Fernandes P., 2000, Acoustical definitions, units and symbols. ICES-FAST working group meeting, Haarlem , 10-14 April 2000.
MacLennan, D.N., Fernandes, P.G., Dalen, J., 2002, A consistent approach to definitions and symbols in fisheries acoustics. ICES J. Mar. Sci. 59, 365-369. CrossRef
Marsac F., Cayré P., 1998, Telemetry applied to behaviour analysis of yellowfin tuna (Thunnus albacares Bonnaterre, 1788) movements in a network of fish aggregating devices. Hydrobiologia 371/372, 155-171.
Moreno, G., Dagorn, L., Sancho, G., Itano, D., 2007, Fish behaviour from fishers' knowledge: the case study of tropical tuna around drifting fish aggregating devices (DFADs). Can. J. Fish. Aquat. Sci. 64, 1517-1528. CrossRef
Ona E.,1999, Methodology for target strength measurements. (1999) ICES Coop. Res. Rep. 235, Copenhagen.
Ohta, I., Kakuma, S., 2005, Periodic behavior and residence time of yellowfin and bigeye tuna associated with fish aggregating devices around Okinawa Islands, as identified with automated listening stations. Mar. Biol. 146, 581-594. CrossRef
Parin N.V., Fedoryako B.I., 1992, Pelagic fish communities around floating objects in the open ocean. Fishing for Tunas associated with floating Objects, International workshop. Inter-American Tropical Tuna Commission, San Diego, pp. 447-458.
Petitgas, P., Levenez, J.J., 1996, Spatial organization of pelagic fish: echogram structure, spatio-temporal condition, and biomass in Senegalese waters. ICES J. Mar. Sci. 53, 147-153. CrossRef
Rose, G.A., Leggett, W.C., 1988, Hydroacoustic signal classification of fish schools by species. Can. J. Fish. Aquat. Sci. 45, 597-604. CrossRef
Scalabrin C., 1997, Identification acoustique des espèces pélagiques à partir d'attributs discriminants des bancs de poissons monospécifiques. Thèse Doct. Océanogr. biol. Univ. Bretagne occidentale, Brest.
Scalabrin, C., Massé, J., 1993, Acoustic detection of the spatial and temporal distribution of fish shoals in the Bay of Biscay. Aquat. Living Resour. 6, 269-283. CrossRef
Simmonds E.J., MacLennan D.N., 2005, Fisheries Acoustics. Theory and Practice. Blackwell Publishing, Oxford.
Simard, Y., McQuinn, I., Montminy, M., Lang, C., Miller, D., Stevens, C., Wiggins, D. Marchalot, C., 1997, Description of the HAC standard format for raw and edited hydroacoustic data, Version 1.0. Can. Tech. Rep. Fish. Aquat. Sci. 2174, 65 p.
Simrad 2001, Simrad EK60 Scientific echo sounder Instruction manual. Simrad AS, Horten, Norway.
Taquet M., Guillou A., Reynal L., Lagin A., 2000, The large pelagic fish of Martinique: biology and exploitation. In: Creswell R.L. (Ed.), 51st Proc. Gulf Caribb. Fish. Inst. 51, pp. 375-389.
Taquet, M., Sancho, G., Dagorn, L., Gaertner, J.C., Itano, D., Aumeeruddy, R., Wendling, B., Peignon, P., 2007, Characterization of fish aggregations associated with drifting fish aggregating devices (DFADs) in the Western Indian Ocean through underwater visual census. Aquat. Living Resour. 20, 331-341. CrossRef
Tichy, F.E., Solli, H., Klaveness, H., 2003, Non-linear effects in a 200-kHz sound beam and the consequences for target-strength measurement. ICES J. Mar. Sci. 60, 571-574. CrossRef
Weill, A., Scalabrin, C., Diner, N., 1993, MOVIES-B: an acoustic detection description software. Application to shoal species' classification. Aquat. Living Resour. 6, 255-267. CrossRef