Catch and bycatch captured by tropical tuna purse-seine fishery in whale and whale shark associated sets: comparison with free school and FAD sets

Escalle, Lauriane; Gaertner, Daniel; Chavance, Pierre; Murua, Hilario; Simier, Monique; Pascual-Alayón, Pedro Jose; Ménard, Frédéric; Ruiz, Jon; Abascal, Francisco; Mérigot, Bastien

doi:10.1007/s10531-018-1672-1

Catch and bycatch captured by tropical tuna purse-seine fishery in whale and whale shark associated sets: comparison with free school and FAD sets

Original Paper
Published: 27 November 2018

Volume 28, pages 467–499, (2019)
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Biodiversity and Conservation Aims and scope Submit manuscript

Lauriane Escalle^1,5,
Daniel Gaertner¹,
Pierre Chavance¹,
Hilario Murua²,
Monique Simier¹,
Pedro Jose Pascual-Alayón³,
Frédéric Ménard⁴,
Jon Ruiz⁶,
Francisco Abascal³ &
…
Bastien Mérigot¹

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Abstract

In an ecosystem approach to fisheries management (EAFM) framework of the tuna purse-seine fishery, the assessment of target species, but also that of bycatch species, is essential. In the Atlantic and Indian oceans, purse-seine nets are sometimes set around tuna schools associated with whale sharks and baleen whales, although less frequently than around free-swimming tuna schools or those associated with fish aggregating devices (FAD). However, knowledge on the targeted catch and bycatch in these megafauna associated fishing sets is still relatively limited. Therefore, the aims of this study were to assess species and size composition of the target tuna species, as well as the diversity of bycatch species in whale and whale shark associated sets. Whale associated sets were found to be very similar to free school sets in terms of tuna catch (large yellowfin tuna), bycatch occurrence (presence in half the sets) and species assemblage (alpha and beta diversity). Whale shark associated sets were intermediate between FAD and free school sets, with tuna catch (skipjack and juvenile yellowfin) closer to FAD than to free school sets. However, the presence of large yellowfin, the bycatch composition (with almost no finfish, abundantly captured in FAD sets) and the species assemblage showed similarity with free school sets. This study highlights the need for an EAFM in the tuna purse-seine fishery by providing knowledge on pelagic multi-specific catches and bycatches.

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Acknowledgements

The authors are grateful to the skippers, the European purse-seiner associations (ORTHONGEL, OPAGAC and ANABAC) for their cooperation, and to Terres Australes et Antarctiques Françaises (TAAF) involved in the logbook data collection, which is supported by the French and Spanish National Fisheries agencies and research institutes (IRD/IEO/AZTI). We would also like to thank the teams of the ‘Observatoire Thonier’ (IRD), the ‘Centro Costero de Canarias’ (IEO) and AZTI Tecnalia for providing logbook and scientific observer data. L. Escalle was funded by a PhD grant from the University of Montpellier. This is contribution 888 from AZTI-Tecnalia Marine Research Division. The manuscript has been proof-read and the English corrected by Michael Paul. We thank two anonymous Reviewers for their constructive comments on an earlier version of the manuscript.

Author information

Authors and Affiliations

MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Av. Jean Monnet, CS 30,171, 34203, Sète, France
Lauriane Escalle, Daniel Gaertner, Pierre Chavance, Monique Simier & Bastien Mérigot
AZTI Tecnalia, Herrera Kaia, Portualde z/g, 20110, Pasaia, Gipuzkoa, Spain
Hilario Murua
Instituto Español de Oceanografía, Dársena Pesquera PCL8, 38180, Santa Cruz de Tenerife, Spain
Pedro Jose Pascual-Alayón & Francisco Abascal
Aix Marseille Université, Univ Toulon, CNRS, IRD, MIO, UM110, Marseille, France
Frédéric Ménard
The Pacific Community (SPC), B.P. D5, 98848, Noumea, New Caledonia
Lauriane Escalle
AZTI Tecnalia, Txatxarramendi ugartea z/g, 48395, Sukarrieta, Bizkaia, Spain
Jon Ruiz

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Lauriane Escalle
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Daniel Gaertner
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Pierre Chavance
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Hilario Murua
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Monique Simier
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Pedro Jose Pascual-Alayón
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Frédéric Ménard
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Jon Ruiz
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Francisco Abascal
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Bastien Mérigot
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Correspondence to Lauriane Escalle.

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Communicated by Simon Ingram.

This article belongs to the Topical Collection: Coastal and marine biodiversity.

Appendix 1: Taxa list by taxonomic group, with their total abundance, occurrence, percentage of sets based on estimated abundance, ocean location (Atlantic (AO) and Indian (IO) Oceans), fishing mode where they occurred

Taxonomic groups	Taxa	Abundance	Occurrence	% of set based on estimated Ab.^a	Distribution	Fishing mode occurrence
Taxonomic groups	Taxa	Abundance	Occurrence	% of set based on estimated Ab.^a	Distribution	FAD	FSC	WHA	WHS
Billfishes	Istiophoridae^b	376	268	1.1	AO & IO	X	X	X	X
	Istiompax indica	593	400	4.3	AO & IO	X	X	X	X
	Istiophorus albicans	4378	1378	3.3	AO	X	X	X	X
	Istiophorus platypterus	154	95	1.1	IO	X	X	X
	Makaira mazara	43	31	0.0	IO	X
	Makaira nigricans	4621	2986	2.3	AO & IO	X	X	X	X
	Kajikia albida	81	49	6.1	AO	X	X
	Tetrapturus angustirostris	22	18	0.0	AO & IO	X	X
	Kajikia audax	128	84	1.2	IO	X	X	X
	Tetrapturus pfluegeri	76	43	0.0	AO	X	X
	Xiphiidae				AO & IO
	Xiphias gladius	190	137	0.0	AO & IO	X	X	X	X
Cephalopods	Cephalopoda	10	10	0.0	AO & IO	X	X
Other fishes	Balistidae^b	112,706	559	13.3	AO & IO	X	X	X	X
	Abalistes stellaris	25,175	162	31.5	IO	X	X	X
	Balistes capriscus	41,650	1086	13.4	AO	X	X
	Balistes punctatus	8034	66	15.2	AO	X
	Canthidermis maculata	2,173,585	8924	36.3	AO & IO	X	X	X	X
	Canthidermis sufflamen	13,605	164	58.5	AO & IO	X	X	X
	Belonidae^b	206	68	0.0	AO & IO	X	X
	Ablennes hians	540	126	7.1	AO & IO	X	X		X
	Tylosurus crocodilus crocodilus	261	47	0.0	AO & IO	X	X
	Bramidae^b	125	19	0.0	AO & IO	X	X
	Brama brama	10	6	0.0	AO & IO	X
	Carangidae^b	45,970	301	14.6	AO & IO	X	X
	Carangoides orthogrammus	321	39	2.6	IO	X
	Caranx crysos	2,948,614	6151	48.8	AO	X	X	X
	Caranx lugubris	72	46	2.2	AO & IO	X	X
	Caranx sexfasciatus	4240	204	3.9	IO	X	X
	Decapterus sp.^b	44	6	0.0	AO & IO	X
	Decapterus macarellus	104,881	967	16.2	AO & IO	X	X
	Elagatis bipinnulata	1,011,942	9040	31.1	AO & IO	X	X	X	X
	Naucrates ductor	561	195	1.5	AO & IO	X	X	X	X
	Selene dorsalis	110	18	0.0	AO	X	X
	Seriola rivoliana	83,219	2539	12.4	AO & IO	X	X
	Uraspis sp.^b	4992	251	12.4	AO & IO	X
	Uraspis helvola	1706	88	2.3	AO & IO	X
	Uraspis secunda	35,263	790	10.3	AO & IO	X	X		X
	Uraspis uraspis	3788	61	23.0	IO	X
	Coryphaenidae^b	5771	553	4.0	AO & IO	X	X		X
	Coryphaena equiselis	8765	560	9.6	AO & IO	X	X	X	X
	Coryphaena hippurus	145,891	8817	13.0	AO & IO	X	X	X	X
	Diodontidae^b	753	125	0.0	AO & IO	X	X	X
	Diodon eydouxii	1353	114	1.8	AO & IO	X
	Diodon hystrix	697	154	2.6	AO & IO	X	X	X	X
	Echeneidae^b	479	199	3.0	AO & IO	X	X	X	X
	Echeneis naucrates	164	64	0.0	AO & IO	X	X		X
	Phtheirichthys lineatus	206	7	0.0	AO & IO	X			X
	Remora australis	1	1	0.0	AO & IO		X
	Remora brachyptera	59	39	2.6	AO & IO		XX
	Remora osteochir	52	34	0.0	AO & IO	X	X	X	X
	Remora remora	1012	338	2.4	AO & IO	X	X	X	X
	Remora albescens	23	19	5.3	AO & IO		X	X
	Ephippidae^b	59	13	0.0	IO	X
	Platax sp.^b	851	78	1.3	IO	X
	Platax teira	4411	286	2.4	IO	X	X
	Exocoetidae	380	66	4.5	AO & IO	X	X
	Fistulariidae				AO & IO
	Fistularia sp.^b	2	2	0.0	AO & IO		X
	Gempylidae				AO & IO	X	X
	Gempylus serpens	17	9	0.0	AO & IO	X	X
	Ruvettus pretiosus	724	42	0.0	AO & IO	X	X
	Hemiramphidae				AO
	Euleptorhamphus velox	100	1	0.0	AO
	Kyphosidae				AO & IO
	Kyphosus sp.^b	11,793	440	14.1	AO & IO	X	X
	Kyphosus cinerascens	10,260	480	5.0	IO	X	X
	Kyphosus sectatrix	17,073	388	18.4	AO	X	X
	Kyphosus vaigiensis	9272	388	10.6	IO	X	X
	Lampridae				AO & IO
	Lampris guttatus	3	3	0.0	AO & IO	X
	Lobotidae				AO & IO
	Lobotes surinamensis	94,617	3966	7.6	AO & IO	X	X	X	X
	Luvaridae				AO & IO
	Luvarus imperialis	2	1	0.0	AO & IO	X
	Molidae^b	14	11	1.6	AO & IO	X
	Masturus lanceolatus	162	124	1.6	AO & IO	X	X	X	X
	Mola mola	423	332	4.2	AO & IO	X	X	X	X
	Ranzania laevis	780	45	8.9	AO & IO	X	X
	Monacanthidae^b	2318	74		AO & IO	X	X	X
	Aluterus monoceros	39,573	1110	7.2	AO & IO	X	X	X
	Aluterus scriptus	2015	241	3.3	AO & IO	X	X
	Cantherhines macrocerus	169	50	0.0	AO		X
	Nomeidae				AO & IO
	Cubiceps sp.^b	1	1	0.0	AO & IO		X
	Cubiceps capensis	4	3	0.0	AO & IO	X	X
	Psenes cyanophrys	469	45	6.7	AO & IO	X	X	X
	Pomacentridae^b	4	3	0.0	AO & IO
	Abudefduf saxatilis	3	3	0.0	AO		X
	Abudefduf vaigiensis	5	5	0.0	IO	X	X
	Scombridae^b	269	29	0.0	AO & IO	X	X
	Acanthocybium solandri	81,347	6552	12.0	AO & IO	X	X	X	X
	Sarda sarda	8	2	0.0	AO	X	X
	Scomber sp.^b	43	3	0.0	AO & IO	X	X
	Scomber japonicus	20	1	0.0	AO & IO	X
	Scomber scombrus	20	5	0.0	AO	X	X
	Serranidae^b	4146	21	19.0	AO & IO	X
	Sphyraenidae^b	231	44	0.0	AO & IO	X	X
	Sphyraena barracuda	12,036	1679	6.9	AO & IO	X	X	X
	Tetraodontidae^b	74	6	0.0	AO & IO	X	X		X
	Lagocephalus lagocephalus	1183	100	4.3	AO & IO	X	X	X	X
	Zanclidae				AO & IO
	Zanclus cornutus	2	2	0.0	AO & IO	X	X
Rays	Unidentified ray	33	22	0.0	AO & IO	X	X	X
	Dasyatidae^b	68	58	0.0	AO & IO	X	X	X
	Pteroplatytrygon violacea	580	480	0.8	AO & IO	X	X	X	X
	Mobulidae^b	21	16	0.0	AO & IO	X	X
	Manta sp.^b	20	15	0.0	AO & IO		X
	Mobula sp.^b	263	167	2.4	AO & IO	X	X	X	X
	Mobula alfredi	2	2	0.0	IO		X
	Mobula birostris	175	124	0.0	AO & IO	X	X	X	X
	Mobula japanica	623	290	2.1	AO & IO	X	X	X	X
	Mobula mobular	290	153	1.3	AO	X	X	X
	Mobula tarapacana	432	192	5.7	AO & IO	X	X
	Mobula thurstoni	3	3	0.0	AO & IO		X
	Myliobatidae				AO & IO
	Aetobatus narinari	1	1	0.0	AO & IO		X
	Rhinopteridae	2	2	0.0	AO & IO	X	X
	Torpedinidae	3	3	0.0	AO & IO	X	X
Sharks	Unidentified shark	785	117	0.0	AO & IO	X	X	X
	Carcharhiniformes^b	341	74	0.0	AO & IO	X	X
	Carcharhinidae^b	2151	427	4.2	AO & IO	X	X	X	X
	Carcharhinus falciformis	42,296	7200	3.5	AO & IO	X	X	X	X
	Carcharhinus leucas	93	7	0.0	AO & IO	X	X
	Carcharhinus longimanus	1038	348	0.9	AO & IO	X	X	X
	Carcharhinus obscurus	5	3	0.0	AO & IO	X
	Galeocerdo cuvier	6	6	0.0	AO & IO	X	X
	Prionace glauca	427	299	1.0	AO & IO	X	X	X	X
	Sphyrnidae^b	234	97	7.2	AO & IO	X	X	X
	Sphyrna lewini	3968	674	3.1	AO & IO	X	X	X
	Sphyrna mokarran	627	87	0.0	AO & IO	X	X
	Sphyrna zygaena	2694	527	1.7	AO & IO	X	X	X	X
	Lamniformes^b	3	3	0.0	AO & IO		X
	Alopidae^b	24	10	0.0	AO & IO	X
	Alopias superciliosus	54	23	4.3	AO & IO	X
	Alopias vulpinus	4	3	0.0	AO & IO	X
	Lamnidae^b	18	23	0.0	AO & IO	X	X
	Carcharodon carcharias	3	3	0.0	AO & IO	X
	Isurus sp.^b	22	21	0.0	AO & IO		X
	Isurus oxyrinchus	375	336	1.2	AO & IO	X	X	X	X
	Lamna nasus	1	1	0.0	AO & IO	X
	Megachasmidae				AO & IO
	Megachasma pelagios	1	1	0.0	AO & IO		X
	Squaliformes^b	3	1	0.0	AO & IO	X
	Etmopteridae				AO & IO
	Etmopterus sp.	1	1	0.0	AO & IO	X
Turtles	Unidentified turtle	117	109	0.0	AO & IO	X	X
	Cheloniidae^b	8	8	0.0	AO & IO	X	X
	Caretta caretta	639	470	0.0	AO & IO	X	X	X
	Chelonia mydas	164	150	1.3	AO & IO	X	X	X	X
	Eretmochelys imbricata	46	45	0.0	AO & IO	X	X	X
	Lepidochelys kempii	48	35	0.0	AO	X	X	X
	Lepidochelys olivacea	1229	877	0.0	AO & IO	X	X	X	X
	Dermochelyidae				AO & IO
	Dermochelys coriacea	114	106	0.0	AO & IO	X	X

FAD fish aggregating devices, FSC free school, WHA whale associated, WHS whale shark associated sets
^aPercentage of the sets with the taxa present, where the abundance was calculated based on the weight of the taxa captured. For the rest of the sets, the abundance was directly estimated (or counted when < 100 individuals) by the observer
^bThe abundance recorded for these taxa was redistributed among the lowest taxonomic level present per sub-region and fishing mode

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Escalle, L., Gaertner, D., Chavance, P. et al. Catch and bycatch captured by tropical tuna purse-seine fishery in whale and whale shark associated sets: comparison with free school and FAD sets. Biodivers Conserv 28, 467–499 (2019). https://doi.org/10.1007/s10531-018-1672-1

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Received: 08 March 2018
Revised: 05 September 2018
Accepted: 16 November 2018
Published: 27 November 2018
Issue Date: 15 February 2019
DOI: https://doi.org/10.1007/s10531-018-1672-1

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Catch and bycatch captured by tropical tuna purse-seine fishery in whale and whale shark associated sets: comparison with free school and FAD sets

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Appendix 1: Taxa list by taxonomic group, with their total abundance, occurrence, percentage of sets based on estimated abundance, ocean location (Atlantic (AO) and Indian (IO) Oceans), fishing mode where they occurred

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Catch and bycatch captured by tropical tuna purse-seine fishery in whale and whale shark associated sets: comparison with free school and FAD sets

Abstract

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Similar content being viewed by others

Size-selective catch in tropical tuna purse seine fishery in the Eastern Indian Ocean: Assessment on new selectivity model for purse seine net

Consequences of fishing moratoria on catch and bycatch: the case of tropical tuna purse-seiners and whale and whale shark associated sets

Elasmobranch Community Dynamics in Florida’s Southern Indian River Lagoon

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Appendix 1: Taxa list by taxonomic group, with their total abundance, occurrence, percentage of sets based on estimated abundance, ocean location (Atlantic (AO) and Indian (IO) Oceans), fishing mode where they occurred

Appendix 1: Taxa list by taxonomic group, with their total abundance, occurrence, percentage of sets based on estimated abundance, ocean location (Atlantic (AO) and Indian (IO) Oceans), fishing mode where they occurred

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