Skip to main content Accessibility help

Assessment and bioeconomic analysis of the Majorca (NW Mediterranean) trammel net fishery

  • Gorka Merino (a1), Beatriz Morales-Nin (a2), Francesc Maynou (a1) and Antoni Maria Grau (a3)


Trammel net is the main fishing gear used by artisanal fishers in Majorca Island (NW Mediterranean), and is representative of Mediterranean small-scale fisheries using static gear. The use of static gears close to the coast, where seasonal variability and spatial heterogeneity are high, promotes the diversification of fishing practices or metiers. We analyze the seasonal dynamics of the nets used, target species (red and black scorpionfish, red mullet and cuttlefish) exploitation patterns and the socio-economic conditions under which this fishery takes place, based on General Fisheries Directorate daily sale records (2002–2006). Additional personal socioeconomic interviews allowed the characterization of the trammel net fishery, its fishing behaviour, cost structure and conflicts. Catch and effort data and market surveys are used to evaluate the level of exploitation of the target species and allowed describing Majorca trammel net fishery as an activity based on a sustainable resource. The main target species were found to be near their maximum sustainable yield both by means of a surplus production model (with parameters estimated by CEDA-Catch Effort Data Analysis, software) and an age structured assessment model based on yield-per-recruit analysis. Management actions currently debated by local administration and fishers focus on improving fishers' economic situation, rather than on protecting a threatened resource. One of the management actions proposed is a one day effort reduction, which was analyzed here with the help of a bioeconomic simulation model. A 15-year (2005–2020) simulation allows providing advice to local managers to focus on the commercialization aspects, in order to obtain a higher value to the fish production, rather than expecting to obtain higher profits only by a reduction of the offer.


Corresponding author


Hide All
[1] Bas C., 2002, The Mediterranean Sea: Living resources and exploitation. Zaragoza.CIHEAM-IAMZ / FAO-COPEMED.
[2] Colloca, F., Crespi, V., Cerasi, S., Coppola, S.R., 2004, Structure and evolution of the artisanal fishery in a southern Italian coastal area. Fish. Res. 69, 359369.
[3] Dunn, M.R., 1999, Aspects of the stock dynamics and exploitation of cutlefish, Sepia officinalis (Linnaeus, 1758), in the English Channel. Fish. Res. 40, 277293.
[4] FAO, 2003, Strategies for increasing the sustainable contribution of small-scale fisheries to food security and poverty alleviation. FAO COFI/2003/9, 1–14.
[5] Forsythe, J., Lee, P., Walsh, L., Clark,T., 2002, The effects of crowding on growth of the European cuttlefish, Sepia officinalis Linnaeus, 1758 reared at two temperatures. J. Exp. Mar. Biol. Ecol. 269, 173185.
[6] Iglesias M., Massutí E., Reñones O., Morales-Nin B., 1995, Three small-scale fisheries based on the island of Majorca (NW Mediterranean). Monografies Bolleti Societat Historia Natural Balears, 37, 35–58.
[7] Garcia-Rodriguez, M., Fernandez, A.M., Esteban, A., 2006, Characterisation, analysis and catch rates of the small-scale fisheries of the Alicante Gulf (SE Spain) over a 10 years time series. Fish. Res. 77, 226238.
[8] Gordon, H.S., 1954, The economic theory of a common-property resource: the fishery. J. Polit. Econ. 62, 124142.
[9] Lleonart, J., Maynou, F., 2003, Fish stock assessments in the Mediterranean: state of the art. Sci. Mar. 67, 3749.
[10] Lleonart, J., Maynou, F., Recasens, L., Franquesa, R., 2003, A bioeconomic model for Mediterranean fisheries, the hake off Catalonia (western Mediterranean) as a case study. Sci. Mar. 67, 337351.
[11] Maynou, F., Demestre, M., Sánchez, P., 2003, Analysis of catch per unit of effort by multivariate analysis and generalised linear models for deep-water crustacean fisheries off Barcelona (NW Mediterranean). Fish. Res. 65, 257269.
[12] Merino, G., Karlou-Riga, C., Anastopoulou, I., Maynou, F., Lleonart, J., 2007, Bioeconomic simulation analysis of hake and red mullet fisheries in the Gulf of Saronikos (Greece). Sci. Mar. 71, 525535.
[13] Merino, G., Maynou, F., Garcia-Olivares, A., 2007, A new bioeconomic simulation tool for small scale fisheries based on game theory: GAMEFISTO model. Aquat. Living Resour. 20, 223230.
[14] Morales-Nin, B., 1991. Parámetros biológicos de Mullus surmuletus (L. 1758) en Mallorca. Bol. Inst. Esp. Oceanogr. 7, 139–147.
[15] Morey, G., Moranta, J., Massutí, E., Grau, A., Linde, M., Riera, F., Morales-Nin, B., 2003, Weight-length relationships of litoral to lower slope fishes from the Western Mediterranean. Fish. Res. 62, 8996.
[16] Punt, A.E., 1992, Selecting management methodologies for marine resources with an illustration for South African hake. S. Afr. J. Mar. Sci. 12, 943-958.
[17] Reglero P., Moreales-Nin B., 2008, Relationship between first sale price, body size and total catch of trammelnet target species in Majorca (NW Mediterranean). Fish. Res. In press.
[18] Royer, J., Pierce, G.J., Foucher, E., Robin, J.P., 2006, The English Channel stock of Sepia officinalis: Modelling variablity in abundance and impact of fishery. Fish. Res. 78, 96106.
[19] Sanchez, P., Demestre, M., Ramon, M., Kaiser, M.J., 2000, The impact of otter trawling on mud communities in the northwestern Mediterranean. ICES J. Mar. Sci. 57, 13521358.
[20] Schaefer, M.B., 1954, Some aspects of the dynamics of populations important to the management of commercial marine fisheries. Bull. IATTC 2, 247285.
[21] Schnute, J., 1985, A general theory for analysis of catch and effort data. Can. J. Fish. Aquat. Sci. 42, 414429.
[22] Stergiou, K.I., Christou, E.D., Petrakis, G., 1997, Modelling and forecasting monthly fisheries catches: comparison of regression, univariate and multivariate time series methods. Fish. Res. 29, 5595.
[23] Stergiou, K.I., Moutopoulos, D.K., Soriguer, M.C., Puente, E., Lino, P.G., Zabala, C., Monteiro, P., Errazkin, L.U., Erzini, K., 2006, Trammel net catch species composition, catch rates and métiers in southern European waters: A multivariate approach. Fish. Res. 79, 170182.
[24] Tzanatos, E., Somarakis, S., Tserpes, G., Koutsikopoulos, C., 2006, Identifying and classifying small-scale fisheries métiers in the Mediterranean: A case study in the Patraikos Gulf, Greece. Fish. Res. 81, 158168.
[25] Ulrich, C., Le Gallic, B., Dunn, M.R., Gascuel, D., 2002, A multi-species, multi-fleet bioeconomic simulation model for the English Channel artisanal fisheries. Fish. Res. 58, 379401.



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