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Skates in the demersal trawl fishery of San Matías Gulf: species composition, relative abundance and maturity stages

Published online by Cambridge University Press:  06 July 2011

Marilú Estalles ,
Nidia M. Coller ,
Maria Raquel Perier  and
Edgardo E. Di Giácomo
Marilú Estalles*
Affiliation:
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina Instituto de Biología Marina y Pesquera “Alte. Storni” (IBMP), Güemes 1030, 8520 San Antonio Oeste, Río Negro, Argentina
Nidia M. Coller
Affiliation:
Instituto de Biología Marina y Pesquera “Alte. Storni” (IBMP), Güemes 1030, 8520 San Antonio Oeste, Río Negro, Argentina Universidad Nacional del Comahue (UNCo), Lab Recursos Ict, Grp CONDROS, Guemes 1030, RA-8520 San Antonio Oeste, Rio Negro, Argentina
Maria Raquel Perier
Affiliation:
Instituto de Biología Marina y Pesquera “Alte. Storni” (IBMP), Güemes 1030, 8520 San Antonio Oeste, Río Negro, Argentina Universidad Nacional del Comahue (UNCo), Lab Recursos Ict, Grp CONDROS, Guemes 1030, RA-8520 San Antonio Oeste, Rio Negro, Argentina
Edgardo E. Di Giácomo
Affiliation:
Instituto de Biología Marina y Pesquera “Alte. Storni” (IBMP), Güemes 1030, 8520 San Antonio Oeste, Río Negro, Argentina Universidad Nacional del Comahue (UNCo), Lab Recursos Ict, Grp CONDROS, Guemes 1030, RA-8520 San Antonio Oeste, Rio Negro, Argentina
*
a Corresponding author: ml.estalles@conicet.gov.ar
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Abstract

Argentina is one of the countries with the largest overall landings of skates and rays (24 000 t/year). As a consequence of high levels of exploitation and deficient management tools, many of these species are threatened with extinction. In the bottom trawl fishery of San Matías Gulf, northern Patagonia, skates and rays are caught as bycatch and all have historically been recorded in the fishery logbook under the category “rays”. Therefore, species composition and their characteristics were unknown. The aim of this study was to characterize the commercial exploitation of batoid species in this fishery. Our results indicate that commercial landings include nine species of skate, six of which are common. Among these, Atlantoraja platana, Sympterygia bonapartii and Dipturus chilensis were considered the main species of this fishery. Their combined relative abundance and weight made up about 90% of the batoid catch throughout the year. Sexual segregation was detected in four species in which individuals of one sex dominated commercial landings. The commercial fraction was composed of individuals with a wide range of sizes. Immature individuals could represent 90% of the individuals landed for some species. At present, lack of data prevents us from quantifying the impact that this fishery is having on these species, but our findings highlight the importance of conducting research surveys to assess the abundance and geographic extent of these populations. The information presented here provided the basis for the proposal of a new logbook format incorporating species-level identification. The new logbook was implemented on 1 January 2010.

Keywords

ChondrichthyesElasmobranchRajidaeCommercial landingsArgentinaSouthwest Atlantic
Type
Note
Information
Aquatic Living Resources , Volume 24 , Issue 2 , April 2011 , pp. 193 - 199
Copyright
© EDP Sciences, IFREMER, IRD 2011

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References

Agnew, D.J.,Nolan, C.P.,Beddington, J.R.,Baranowski, R., 2000, Approaches to the assessment and management of multispecies skate and ray fisheries using the Falkland Islands fishery as an example. Can. J. Fish. Aquat. Sci. 57, 429–440. CrossRefGoogle Scholar
Bonfil, R., 1994, Overview of world elasmobranch fisheries. FAO Fish. Tech. Pap. 341, 1–119. FAO, Rome. Google Scholar
Brander, K., 1981, Disappearance of common skate Raia batis from Irish Sea. Nature 290, 48–49. CrossRefGoogle Scholar
Casey, J.M.,Myers, R.A., 1998, Near extinction of a large, widely distributed fish. Science 281, 690–692. CrossRefGoogle ScholarPubMed
Cedrola, P.V.,González, A.M.,Pettovello, A.D., 2005, Bycatch of skates (Elasmobranchii: Arhynchobatidae, Rajidae) in the Patagonian red shrimp fishery. Fish. Res. 71, 141–150. CrossRefGoogle Scholar
Colonello J.H., 2009, Ecología reproductiva de tres batoideos (Chondrichthyes): Atlantoraja castelnaui (Rajidae), Rioraja agassizi (Rajidae) y Zapteryx brevirostris (Rhinobatidae). Implicancias de distintas estrategias adaptativas en un escenario de explotación comercial intensiva. Ph.D. Thesis, Univ. Nacional de La Plata.
Cousseau M.B., Figueroa D.E., Díaz de Astarloa J.M., Mabragaña E., Lucifora L.O., 2007, Rayas, chuchos y otros batoideos del Atlántico Sudoccidental. Instituto Nacional de Investigación y Desarrollo Pesquero INIDEP, Mar del Plata.
Díaz de Astarloa, J.M.,Mabragaña, E.,Hanner, R.,Figueroa, D.E., 2008, Morphological and molecular evidence for a new species of longnose skate (Rajiformes: Rajidae: Dipturus) from Argentinean waters based on DNA barcoding. Zootaxa 1921, 35–46. Google Scholar
Di Giácomo E.E., Perier M.R., 1991, Evaluación de la biomasa y explotación comercial del pez gallo (Callorhynchus callorhynchus) en el Golfo San Matías, Argentina. Frente Marítimo 9, Sect. A, 7–13.
Di Giácomo E.E., Perier M.R., 1992, Abundancia, estructura poblacional y zona de desove de la merluza (Merluccius hubbsi) en el Golfo San Matías, Argentina. Frente Marítimo 12, Sec. A, 47–52.
Domingo A., Forselledo R., Miller P., Passadore C., 2008, Plan de Acción Nacional para la conservación de condrictios en las pesquerías uruguayas. Montevideo, DINARA, Uruguay, 88 p.
Dulvy, N.K.,Metcalfe, J.D.,Glaville, J.,Pawson, M.G.,Reynolds, J.D., 2000, Fishery stability, local extinctions, and shifts in community structure in skates. Conserv. Biol. 14, 283–293. CrossRefGoogle Scholar
Enever, R.,Catchpole, T.L.,Ellis, J.R.,Grant, A., 2009, The survival of skates (Rajidae) caught by demersal trawlers fishing in UK waters. Fish. Res. 97, 72–76. CrossRefGoogle Scholar
Estalles, M., Perez Comesaña, J.E.,Tamini, L.L.,Chiaramonte, G.E., 2009, Reproductive biology of the skate, Rioraja agassizii (Müller and Henle 1841), off Puerto Quequén, Argentina. J. Appl. Ichthyol. 25, 60–65. CrossRefGoogle Scholar
FAO, 2010, Capture production 1950–2008. FAO Fisheries Department, Fishery Information, Data and Statistics Unit. FISHSTAT Plus: Universal Software for Fishery Statistical Time series, Version 2.3.2000.
Field, I.C.,Meekan, M.G.,Buckworth, R.C.,Bradshaw, C.J.A., 2009, Susceptibility of sharks, rays and chimaeras to global extinction. Adv. Mar. Biol. 56, 275–363. CrossRefGoogle ScholarPubMed
Figueiredo, I., Moura, T., Bordalo-Machado, P., Neves, A., Rosa, C., Serrano Gordo, L., 2007, Evidence for temporal changes in ray and skates populations in the Portuguese coast (1998–2003), its implications in the ecosystem. Aquat. Living Resour. 20, 85–93. CrossRefGoogle Scholar
Hoening J.M., Gruber S.H., 1990, Life-History Patterns in the elasmobranchs: Implications for Fisheries Management. In: Pratt Jr. H. L., Gruber S.H., Taniuchi T. (Eds.), Elasmobranchs as living resources: advances in the biology, ecology, systematics, and the status of the Fisheries, NOAA Techn. Rep. 90, pp. 1–16.
Iglésias, S.P., Toulhoat, L., Sellos, D.Y., 2010, Taxonomic confusion and market mislabelling of threatened skates: important consequences for their conservation status. Aquat. Conserv. Mar. Freshw. Ecosyst. 20, 319–333. CrossRefGoogle Scholar
IUCN, 2010, Red List of Threatened Species. Version 2010.4, available at: www.iucnredlist.org, Last accessed 10 July 2010.
Laptikhovsky, V., 2004, Survival rates for rays discarded by the bottom trawl squid fishery off the Falkland Islands. Fish. Bull. 102, 757–759. Google Scholar
Licandeo, R.R.,Lamilla, J.G.,Rubilar, P.G.,Vega, R.M., 2006, Age, growth, and sexual maturity of the yellownose skate Dipturus chilensis in the south-eastern Pacific. J. Fish Biol. 68, 488–506. CrossRefGoogle Scholar
Licandeo, R., Cerna,, F., Céspedes,, R., 2007, Age, growth, and reproduction of the roughskin skate, Dipturus trachyderma, from the southeastern Pacific. ICES J. Mar. Sci. 64, 141–148. Google Scholar
Massa A.M., Lucifora L.O., Hozbor N.M., 2004, Condrictios de la región costera bonaerense y uruguaya. In: Sánchez R.P., Bezzi S.I. (Eds.), El Mar Argentino y sus recursos pesqueros Tomo 4. Los peces marinos de interés pesquero, Caracterización biológica y evaluación del estado de explotación, Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Mar del Plata, Argentina, pp. 85–100.
McEachran J.D., Aschliman N., 2004, Phylogeny of Batoidea. In: Carrier J.C., Musick J.A., Heithaus M.R. (Eds.), Biology of sharks and their relatives. CRC Press, pp. 79-113.
Ministerio de Agricultura Ganadería y Pesca de la Nación, 2010, Estadística de Desembarcos de Pesca Marítima, available at: http://www.minagri.gob.ar/, Last accessed 10 July 2010.
Mucientes G.R., Queiroz N., Sousa L.L., Tarroso P., Sims D.W., 2009, Sexual segregation opelagic sharks and the potential threat from fisheries. Biol. Lett. 1–4.
Perier M.R., Coller N.M., Di Giácomo E.E., Estalles M., 2007, Estado poblacional de las especies de condrictios del golfo San Matías. Serie de Documentos Técnicos CONDROS No. 01/07.
Perier, M.R., Di Giácomo, E.E., 2002, El Savorín Seriolella porosa como un recurso estacional en el Golfo San Matías, República Argentina. Rev. Invest. Desarr. Pesq. 15, 15–26. Google Scholar
Prager M.H., Saila S.B., Recksiek C.W., 1989, FISHPARM: a microcomputer program for parameter estimation of nonlinear models in fishery science, second edition. Old Dominion University Oceanography Tech. Rep. No. 87–10.
Quiroz, J.C.,Wiff, R.,Céspedes, R., 2007, Reproduction and population aspects of the yellownose skate, Dipturus chilensis (Pisces, Elasmobranchii: Rajidae), from southern Chile. J. Appl. Ichthyol. 25, 1–6. Google Scholar
Quiroz,, J.C., Wiff, R.,Cubillos, L.A.,Barrientos, M.A., 2011, Vulnerability to exploitation of the yellownose skate (Dipturus chilensis) off southern Chile. Fish. Res. 109, 225–233. CrossRefGoogle Scholar
Stehmann, M.F.W., 2002, Proposal of a maturity stages scale for oviparous and viviparous cartilaginous fishes (Pisces, Chondrichthyes). Arch. Fish. Mar. Res. 50, 23–48. Google Scholar
Steven, G.A., 1933, Rays and skates of Devon and Cornwall. III. The proportions of the sexes in nature and in commercial landings and their significance to the fishery. J. Mar. Biol. Assoc. UK 18, 611–625. CrossRefGoogle Scholar
Stevens, D.J.,Bonfil, R.,Dulvy, N.K.,Walker, P.A., 2000, The effects of fishing on sharks, rays, and chimaeras (chondrichthyans), and the implications for marine ecosystems. ICES J. Mar. Sci. 57, 476–494. CrossRefGoogle Scholar
Tamini, L.L.,Chiaramonte, G.E.,Perez, J.E.,Cappozzo, H.L., 2006, Batoids in a costal trawl fishery of Argentina. Fish. Res. 77, 326–332. CrossRefGoogle Scholar
Walker, P.A.,Hislop, J.R.G., 1998, Sensitive skates or resilient rays? Spatial and temporal shifts in ray species composition in the central and north-western North Sea between 1930 and the present day. ICES J. Mar. Sci. 55, 392–402. CrossRefGoogle Scholar
Wearmouth, V.J.,Sims, D.W., 2008, Sexual segregation in marine fish, reptiles, birds and mammals: Behaviour patterns, mechanisms and conservation implications. Adv. Mar. Biol. 54, 107–170. CrossRefGoogle ScholarPubMed
Zar J.H., 1984, Biostatistical Analysis, 2nd edn., Prentice Hall, Englewood Cliffs.