Skip to main content Accessibility help

The spatio-temporal pattern of Argentine shortfin squid Illex argentinus abundance in the southwest Atlantic

  • Mar Sacau (a1), Graham J. Pierce (a2), Jianjun Wang (a2), Alexander I. Arkhipkin (a3), Julio Portela (a1), Paul Brickle (a3), María B. Santos (a1) (a2), Alain F. Zuur (a4) and Xosé Cardoso (a1)...

The Argentine shortfin squid (Illex argentinus) is a common neritic species occurring in waters off Brazil, Uruguay, Argentina, and the Falkland/Malvinas Islands in the southwest Atlantic. Illex argentinus is the most important fished cephalopod species in the area and plays a significant role in the ecosystem. It is object of major fisheries using both trawlers (mostly from European countries) and jigging vessels (mainly from Asian countries) and estimated total annual average catch for the last 15 years (1988-2003) is about 700 000 tons. The present paper aims to develop predictive models of squid abundance in relation to physical and environmental conditions, models that could ultimately be applied to fishery forecasting. Fishery and biological data collected by scientific observers aboard commercial trawlers between 1988 and 2003 were analysed in relation to physical and environmental factors to establish the spatio-temporal pattern of the species' distribution and quantify the influence of environmental variables (e.g. SST, depth) on local abundance. The data included 26 168 fishing haul records, of which 11 103 were positive for Illex. CPUE (Catch Per Unit Effort, kg h−1) was used as abundance index. The analyses were based on time-series maps created using Geographical Information Systems (GIS). GIS maps showed that highest CPUE values were recorded during the first four months of the year (the Austral summer-autumn), with peak values higher than 5000 kg h−1 mainly located within 42° S, 46° S and MN (North part of Malvinas/Falkland) areas. Generalised additive models (GAMs) were used to describe variation in Illex argentinus abundance in relation to geographical and environmental variables. The presence/absence (PA) of Illex and its abundance (CPUE) in areas of presence were modelled separately. Predictors retained in the optimal models included SST, latitude, longitude, month, average fishing depth and year. Both models suggest a clear seasonal effect: maximum catchability was found during March (PA model) and the maximum abundances were found during the first quarter of the year (CPUE model). GAM models also demonstrated that higher catches and maturity of squid were related, in general terms, to warmer and deeper water.

Corresponding author
Hide All
[1] Acha, E.M., Mianzan, H.W., Guerrero, R.A., Favero. M., Bava J., 2004, Marine fronts at the continental shelves of austral South America Physical and ecological processes. J. Mar. Syst. 44, 83-105.
[2] Arkhipkin A.I., Scherbich Z.N. 1991, Crecimiento y estructura intraespecifica del calamar Illex argentinus (Ommastrephidae) en invierno y primavera en el Atlántico Sudoccidental. Scient. Mar. 55, 619-627.
[3] Arkhipkin A. 1990, Edad y crecimiento del calamar (Illex argentinus). Frente Marít. 6 A, 25-35.
[4] Arkhipkin A. 1993, Statolith microstructure and maximum age of Loligo gahi (Myopsida: Loliginidae) on the Patagonian shelf. J. Mar. Biol. Assoc. UK 73, 979-982.
[5] Arkhipkin, A.I., 2000, Intrapopulation structure of winter-spawned Argentine shortfin squid, Illex argentinus (Cephalopoda, Ommastrephidae), during its feeding period over the Patagonian Shelf. Fish. Bull. 98, 1-13.
[6] Basson, M., Beddington, J.R., Crombie, J.A., Holden, S.J., Purchase, L.V., Tingley, G.A., 1996, Assessment and management techniques for migratory annual squid stocks: The Illex argentinus fishery in the Southwest Atlantic as an example. Fish. Res. 28, 3-27.
[7] Bellido, J.M., Pierce, G.J., Wang, J., 2001, Modelling intra annual variation of squid Loligo forbesi in Scottish waters using generalised additive models. Fish. Res. 52, 23-39.
[8] Brunetti N.E., 1988, Contribución al conocimiento biológico-pesquero del calamar argentino (Cephalopoda, Ommastrephidae, Illex argentinus ). Tesis, Mar del Plata, Argentina.
[9] Brunetti, N.E., Ivanovic, M.L., 1992, Distribution and abundance of early life stages of squid (Illex argentinus) in the south-west Atlantic. ICES J. Mar. Sci. 49, 175-183.
[10] Caddy J.F., 1983, The Cephalopods: factors relevant to their population dynamics and to the assessment and management of the stocks. In: Caddy J.F. (Ed.), Advances in Assessment of World Cephalopod Resources. FAO Tech. Pap. 231, Rome.
[11] Csirke J., 1987, Los recursos pesqueros patagónicos y las pesquerías de altura en el Atlántico Sud-occidental. FAO, Rome Doc. Tec. Pesca. 280.
[12] Daskalov, G., 1999, Relating fish recruitment to stock biomass and physical environment in the Black Sea using generalized additive models. Fish. Res. 41, 1-23.
[13] Denis, V., Lejeune, J., Robin, J.P, 2002, Spatio-temporal analysis of commercial trawler data using General Additive models: Patterns of Loliginid squid abundance in the north-east Atlantic. ICES J. Mar. Sci. 59, 633-648
[14] Haimovici M., Brunetti N.E., Rodhouse P.G., Csirke J., Leta R.H., 1998, Illex argentinus. In: Rodhouse P.G., Dawe E.G., O'Dor R.K.(Eds.). Squid Recruitment Dynamics. Rome, FAO, pp. 27-58.
[15] Hastie T., Tibshinari R., 1990, Generalized additive models. London, Chapman & Hall.
[16] Hatanaka, H., Kawahara, S., Uozumi, Y., Kasahara, S., 1985, Comparison of live cycles of five ommastrephid squids fished by Japan: Todarodes pacificus, Illex illecebrosus, Illex argentinus, Nototodarus sloani sloani and Nototodarus sloani gouldi. NAFO Sci. Counc. Stud. 9, 59-68.
[17] Hatanaka, H., 1986, Growth and life span of short-finned squid Illex argentinus in the waters off Argentina. Bull. Jpn. Soc. Sci. Fish. 52, 11-17.
[18] Hatanaka, H., 1988, Feeding migration of short-finned squid Illex argentinus in the waters off Argentina. Nippon Suisan Gakkaishi 54, 1343-1349.
[19] Lipinski M., 1979, Universal maturity scale for the commercially important squids. The results of maturity classification of the Illex illecebrosus population for the years 1973–77. Int. Comm. Northwest Atlantic Fisheries, Res. Doc. 79/2, 38, Ser. 5364.
[20] Martos, P., Piccolo, M.C., 1988, Hydrography of the Argentine continental shelf between 38 $^{\circ}$ and 42 $^{\circ}$ S. Cont. Shelf Res. 8, 1043-1056.
[21] McCullagh P., Nelder J.A., 1989, Generalized Linear Models. Chapman and Hall, London.
[22] Nesis K.N., 1987, Cephalopods of the world. Neptune City, TFH Publications. p. 351.
[23] Pierce, G.J., Boyle, P.R., 2003, Empirical modelling of interannual trends in abundance of squid (Loligo forbesi) in Scottish waters. Fish. Res. 59, 305-326.
[24] Pierce G.J., Wang J., Bellido J.M., Robin J.P., Denis V., Koutsoubas D., Valavanis V., Boyle P.R., 1998, Relationship between cephalopod abundance and environmental conditions in the northeast Atlantic and Mediterranean as revealed by GIS. ICES CM 1998/M:20.
[25] Pierce, G.J., Wang, J., Zheng, X., Bellido, J.M., Boyle, P.R., Denis, V., Robin, J.-P., 2001, A cephalopod fishery GIS for the Northeast Atlantic: Development and application. Int. J. Geogr. Inform. Sci. 15, 763-784.
[26] Portela J.M., Arkhipkin A., Agnew D., Pierce G., Fuertes J.R., Otero M.G., Bellido J.M., Middleton D., Hill S., Wang J., Ulloa E., Tato V., Cardoso X.A., Pompert J., Santos B., 2002, Overview of the Spanish fisheries in the Patagonian Shelf. ICES CM 2002/L: 11.
[27] Roberts, M.J., Sauer, W.H.H., 1994, Environment: the key to understanding the South African chokka squid (Loligo vulgaris reynaudii) life cycle and fishery ? Antarct. Sci. 6, 249-258.
[28] Robin, J.P., Denis, V., 1999, Squid stock fluctuations and waters temperature: temporal analysis of English Channel Loliginidae. J. Appl. Ecol. 36, 101-110.
[29] Rodhouse, P.G., Hatfield, E.M.C., 1990, Dynamics of growth and maturation in the cephalopod Illex argentinus (Teuthoidea: Ommastrephidae). Phil. Trans. R. Soc. Lond. B. 344, 201-212.
[30] Rodhouse, P.G., Barton, J., Hatfield, E.M.C., Symon, C., 1995, Illex argentinus: life cycle, population structure and fishery. ICES Mar. Sci. Symp. 199, 425-432.
[31] Rodhouse P.G., Dawe E.G., O'Dor R.K., 1998, Squid recruitment dymanics. The genus Illex as a model. The commercial Illex species. Influences on variability. FAO Fish. Tech. Pap. 273.
[32] Santos, R.A., Haimovici, M., 1997, Reproductive biology of winter-spring spawners of Illex argentinus (Cephalopoda: Ommastrephidae) Brazil. Scient. Mar. 61, 53-64.
[33] Sato T., Hatanaka., 1983, A review of assessment of Japanese distant-water fisheries for cephalopods. In: Caddy J.F. (Ed.), Advances in assessment of world cephalopod resources. FAO Fish. Tech. Pap. 231, pp. 14-180.
[34] Swartzman, G., Huang, C., Haluzny, S., 1992, Spatial analysis of Bering Sea groundfish survey data using generalized additive models. Can. J. Fish. Aquat. Sci. 49, 1366-1379.
[35] Swartzman, G., Silverman, E., Williamsom, N., 1995, Relating trends in walleye Pollock (Theragra halcogramma) abundance in the Bering Sea to environmental factors. Can. J. Fish. Aquat. Sci. 52, 369-380.
[36] Waluda, C.M., Pierce, G.J., 1998, Temporal and spatial patterns in the distribution of squid (Loligo spp.) in UK waters. S. Afr. J. Mar. Sci. 20, 323-336.
[37] Waluda, C.M., Trathan, P.N., Rodhouse, P.G., 1999, Influence of oceanographic variability on recruitment in the Illex argentinus (Cephalopoda: Ommastrephidae) fishery in the South Atlantic. Mar. Ecol. Prog. Ser. 183, 159-167
[38] Waluda, C.M., Rodhouse, P.G., Trathan, P.N., Pierce, G.J., 2001, Remotely sensed mesoscale oceanography and the distribution of Illex argentinus in the South Atlantic. Fish. Oceanogr. 10, 207-216.
[39] Wang, J., Pierce, G.J., Boyle, P.R., Denis, V., Robin, J.P., Bellido, J.M., 2003, Spatial and temporal patterns of cuttlefish (Sepia officinalis) abundance and environmental influences: a case study using trawl fishery data in French Atlantic coast, English Channel, and adjacent waters. ICES J. Mar. Sci. 60, 1149-1158.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Aquatic Living Resources
  • ISSN: 0990-7440
  • EISSN: 1765-2952
  • URL: /core/journals/aquatic-living-resources
Please enter your name
Please enter a valid email address
Who would you like to send this to? *



Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed