Skip to main content
SpringerLink
Log in

Optimization of fishing for stock enhancement of Rutilis rutilus and Scardinius erythropththalmus in forage fish-deficient Tunisian reservoirs

  • Published:
Environmental Monitoring and Assessment Aims and scope Submit manuscript

Abstract

Twenty specially designed fishing nets were used to catch broodstock of the forage fish roach and rudd (Rutilus rutilus and Scardinius erythrophthalmus). The monofilament gill nets were of different mesh sizes (18, 22, 24, and 26 mm) but of identical dimensions (4 × 50 m). The fish, caught in Sidi Salem reservoir in 2014, amounted to a total of 8901 roach and rudd caught at 41 different times; 3335 broodstock forage fish were transferred to 11 forage fish-deficient Tunisian reservoirs. The best yields (0.464 fish/m2) were obtained with fishing gear fitted with 18-mm mesh size; however, fish mortality with this net was very high, exceeding 83.36%. The greatest efficiency was obtained using nets of 22- and 24-mm mesh with a number of fish per unit effort (NPUE) of 0.181 and 0.173 fish/m2, and a mortality of 54.34 and 53.85%, respectively. Gill nets of 26-mm mesh size were inappropriate (lowest yield 0.129 fish/m2). Length of rudd and roach at first maturity and Gonadosomatic index (GSI) were measured, indicating that all transferred fish were mature. Transfer techniques were improved by holding the captured fish for 5 days before release into the host reservoir.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

Similar content being viewed by others

References

  • Bahri-Sfar, L., Haddaoui, N., Bouzid, W., Essetti, I., Qninba, A., & Ben Hassine, O. K. (2010). Infestation comparée de Ligula intestinalis (Cestoda: Diphyllobothridae) chez deux poissons Cyprinidés: Rutilus rubilio et Scardinius erythrophthalmus dans deux retenues de barrages en Tunisie. Parasite, 17, 241–250.

    Article  CAS  Google Scholar 

  • Borgström, R. (1989). Direct estimation of gill-net selectivity for roach (Rutilus rutilus (L.)) in a small lake. Fisheries Research, 7, 289–298.

    Article  Google Scholar 

  • C.T.A. (2014). Rapport technique des activités de l’unité de développement de la pisciculture continentale en Tunisie. Tunis: Centre Technique d’Aquaculture 59p.

    Google Scholar 

  • C.T.A. (2015). Rapport technique des résultats des opérations de pêche aux filets multimailles dans les barrages tunisiens. Tunis: Centre Technique d’Aquaculture 79 p.

    Google Scholar 

  • C.T.A. (2016). Rapport technique de synthèses des résultats issus des activités de de prospection par les filets multimailles réalisées par l’unité de développement de la pisciculture continentale en Tunisie. Tunis: Centre Technique d’Aquaculture 105 p.

    Google Scholar 

  • Carol, J., & Garcia-Berthou, E. (2007). Gillnet selectivity and its relationship with body shape for eight freshwater fish species. Journal of Applied Ichthyology, 23, 654–660.

    Article  Google Scholar 

  • Çat, A.E.; Yüksel, F. (2014). Multi-monofilament gillnet selectivity for Capoeta trutta (Heckel, 1843) in Keban Dam Lake, Elazig, Turkey. Bilim Gençlik Dergisi., 2: 15–26.

  • Corriero, A., Karakulak, S., Santamaria, N., Deflorio, M., Spedicato, D., Addis, P., Desantis, S., Cirillo, F., Fenech-Farrugia, A., Vassallo-Agius, R., de la Serna, J. M., Oray, Y., Cau, A., Megalofonou, P., & De Metrio, G. (2005). Size and age at sexual maturity of female bluefin tuna (Thunnus thynnus L. 1758) from the Mediterranean Sea. Journal of Applied Ichthyology, 21, 483–486.

    Article  Google Scholar 

  • Crivelli, A.J. (1996). The freshwater fish endemic to the Mediterranean region. An action plan for their conservation. Tour du Valat Publication, pp. 91–171.

  • Daoulas, C. C., & Economidis, P. S. (1984). The feeding of Rutilus rubilio (Bonaparte) (Pisces, Cyprinidae) in Lake Trichonis Greece. Cybium, 8, 29–38.

    Google Scholar 

  • DGPA. (2014). Annuaire des statistiques de pêche (pp. 112–118). Tunisie: Ministère de l’Agriculture.

    Google Scholar 

  • Djemali, I. (2005). Evaluation de la biomasse piscicole dans les plans d’eau douce tunisiens: Approches analytique et acoustique. Thèse de doctorat en sciences agronomiques de l’Institut National Agronomique de Tunisie, pp 33–119.

  • Djemali, I., Laouar, H., & Toujani, R. (2010). Distribution patterns of fish biomass by acoustic survey in three Tunisian man-made lakes. Journal of Applied Ichthyology, 26, 390–396.

    Article  Google Scholar 

  • Finstad, A. G., Jansen, P. A., & Langeland, A. (2000). Gillnet selectivity and size and age structure of an alpine Arctic char (Salvelinus alpinus) population. Canadian Journal of Fisheries and Aquatic Sciences, 57, 1718–1727.

    Article  Google Scholar 

  • Fridman, A. L. (1986). Calculations for fishing gear design. Oxford: Osney Mead.

    Google Scholar 

  • Fujimori, Y., & Tokai, T. (2001). Estimation of gillnet selectivity curve by maximum likelihood method. Fisheries Science, 67, 644–654.

    Article  CAS  Google Scholar 

  • Giraudoux, P. (2012). Pgirmess: data analysis in ecology. http://perso.orange.fr/giraudoux.

  • Haertel, S., Baade, U., & Reiner, E. (2002). No general percid dominance at mesotrophic lake conditions: insights from the quantification of predator-prey interactions. Limnoiogica, 32, 01–13.

    Article  Google Scholar 

  • Hansen, M. J., Madenjian, C. P., Selgeby, J. H., & Helser, T. E. (1997). Gillnet selectivity for lake trout (Salvelinus namaycush) in Lake Superior. Canadian Journal of Fisheries and Aquatic Sciences, 54, 2483–2490.

    Article  Google Scholar 

  • Helser, T. E., Condrey, R. E., & Geaghan, J. P. (1991). A new method of estimating gillnet selectivity, with an example for spotted seatrout, Cynocion nebulosus. Canadian Journal of Fisheries and Aquatic Sciences, 48, 487–492.

    Article  Google Scholar 

  • Hunte, W., & Mahon, R. (2001). Trap mesh selectivity and the management of reef fishes. Blackwell-Synergy Science Ltd. 2. 356–375.

  • Kirkwood, G. P., & Walker, T. I. (1986). Gill net mesh selectivities for gummy shark, Mustelus antarcticus Giinther, taken in south-eastern Australian waters. Australian Journal of Marine & Freshwater Research, 37, 689–697.

    Article  Google Scholar 

  • Kurkilahti, M., & Rask, M. (1996). A comparative study of the usefulness and catchability of multimesh gill nets and gill net series in sampling of perch (Perca fluviatilis L.) and roach (Rutilus rutilus L.) Fisheries Research, 27, 243–260.

    Article  Google Scholar 

  • Losse, G. F., Nau, W., & Winter, M. (1992). Le développement de la pêche en eau douce dans le nord de la Tunisie. Tunis: G.T.Z. – C.G.P 418 p.

    Google Scholar 

  • Luksiené, D., & Sandström, D. (1994). Reproductive disturbance in a roach (Rutilus rutilus) population affected by cooling water discharge. Journal of Fish Biology, 45, 613–625.

    Article  Google Scholar 

  • Migaud, H., Fontaine, P., Kestemont, P., Wang, N., & Brun-Bellut, J. (2004). Influence of photoperiod on the onset of gonadogenesis in Eurasian perch Perca fluviatilis. Aquaculture, 241, 561–574.

    Article  Google Scholar 

  • Mili, S., Laouar, H. (2015). Rapport d’activité du Centre technique d’Aquaculture relatif aux opérations de transfert de géniteurs de Gardon et de rotengle dans les barrages tunisisens: Rapport technique transmit au MARHP. pp 1–46.

  • Mili, S., Ennouri, R., Laouar, H., Missaoui, H. (2015). Fisheries in the Tunisians dams: diagnosis of the current situation and development opportunities. FAO Fisheries and Aquaculture Proceedings: No. 39 eds. 2015. Rome, pp 95–106.

  • Mili, S., Ennouri, R., Dhib, A., Laouar, H., Missaoui, H., & Aleya, L. (2016). Characterization of fish assemblages and population structure of freshwater fish in two Tunisian reservoirs: implications for fishery management. Environmental Monitoring and Assessment, 188, 1–11.

    Article  CAS  Google Scholar 

  • Millar, R. B., & Holst, R. (1997). Estimation of gill-net and hook selectivity using log-linear models. ICES Journal of Marine Science, 54, 471–477.

    Article  Google Scholar 

  • Oksanen, J., Blanchet, G., Kindt, R., Legendre, P., O’Hara, R., Simpson, G., Solymos, P., Stevens, H., Wagner, H. (2011). Vegan: community ecology package (pp. 11–17). R package version 1. https://CRAN.R-project.org/package0vegan.

  • Pivnička, K. (2013). Did the management of the recreational fishery, water quality and flow of water modify the assemblage of fish in the lower part of the River Rokytná (Czech Republic) over the period 1968-2006? (2013). Acta Societatis Zoology Bohemica, 77, 55–66.

  • Prchalováa, M., Kubečka, J., Ríhaa, M., Mrkvičcka, T., Vasek, M., Juza, T., Kratochvíl, M., Peterka, J., Drastík, V., & Krízek, J. (2009). Size selectivity of standardized multimesh gillnets in sampling coarse European species. Fisheries Research, 96, 51–57.

    Article  Google Scholar 

  • R Development Core Team. (2012). R: A Language and Environment for Statistical Computing, R Foundation for Statistical Computing, Vienna, Austria, ISBN 3- 900051-07-0.

  • Radke, R. J., & Eckmann, R. (2001). No general percid dominance under mesotrophic lake conditions: a test of several hypotheses. Limnologica, 31, 37–44.

    Article  Google Scholar 

  • Rincon, P. A., & Lobon-Cervia, J. (1989). Reproductive and growth strategies of the red roach, Rutilus arcasii (Steindachner, 1866), in two contrasting tributaries of the River Duero, Spain. Journal of Fish Biology, 34, 687–705.

    Article  Google Scholar 

  • Rudstam, L. G., Magnuson, J. J., & Tonn, W. M. (1984). Size selectivity of passive fishing gear: a correction for encounter probability applied to gill nets. Canadian Journal of Fisheries and Aquatic Sciences, 41, 1252–1255.

    Article  Google Scholar 

  • Smith, A. (2001). Factors to be taken into account in the decision on minimum mesh sizes and the measurement of mesh size. Report of the national workshop on fisheries monitoring control and surveillance in support of fisheries management, Rome, FAO. 2001. 19p.

  • Sparre, P., Venema, S.C. (1998). Introduction to tropical fish stock assessment. Part 1. Manual. FAO Fisheries Technical Paper. No. 306.1, Rev. 2. Rome, FAO. 1998. 407 p.

  • Spratte, S., & Hartmann, U. (1997). Fischartenkataster: Süßwasserfische und Neunaugen in Schleswig-Holstein (pp. 1–183). Kiel: Ministerium für ländliche Räume: Landwirtschaft, Ernährung und Tourismus.

    Google Scholar 

  • Vollestad, L. A., & L’abée-Lund, J. H. (1987). Reproductive biology of stream-spawning roach, Rutilus rutilus. Environmental Biology of Fishes, 18, 219–227.

    Article  Google Scholar 

  • Wood, S. N. (2006). Generalized Additive Models: An Introduction with R Generalized Additive Models: An Introduction with R. Chapman and Hall/CRC. Textbook - 410 pp.

  • Wysujack, K., Laude, U., Anwand, K., & Mehner, T. (2001). Stocking, population development and food composition of pike Esox lucius in the biomanipulated Feldberger Haussee (Germany)—implications for fisheries management. Limnologica, 31, 45–51.

    Article  Google Scholar 

Download references

Acknowledgments

The authors would like to acknowledge the support of Sonia ABBASSI and Sarra SOUABNI for their contribution to the success of the fishing surveys. This study is the result of a collaborative effort between the University of Bourgogne–Franche-Comté, CNRS 6249, Besançon, France, and the Institut Supérieur de Pêche et d’Aquaculture de Bizerte, Tunisia. The authors are also grateful to the anonymous reviewers for their helpful comments on the first version of the manuscript.

Author information

Authors and Affiliations

  1. Unité Exploitation des Milieux Aquatiques, Institut Supérieur de Pêche et d’Aquaculture de Bizerte, BP 15, 7080, Menzel Jemil, Tunisia

    Sami Mili & Rym Ennouri

  2. Institut National des Sciences et Technologies de la Mer, 28, rue 2 mars 1934, 2025, Salammbô, Tunisia

    Rym Ennouri

  3. Centre Technique d’Aquaculture, 5, rue du Sahel Montfleury, 1009, Tunis, Tunisia

    Houcine Laouar

  4. Laboratoire de Chrono-Environnement, Université de Bourgogne Franche-Comté UMR CNRS, 6249, Besançon, France

    Lotfi Aleya

Authors
  1. Sami Mili
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Rym Ennouri
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Houcine Laouar
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Lotfi Aleya
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Lotfi Aleya.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Mili, S., Ennouri, R., Laouar, H. et al. Optimization of fishing for stock enhancement of Rutilis rutilus and Scardinius erythropththalmus in forage fish-deficient Tunisian reservoirs. Environ Monit Assess 189, 610 (2017). https://doi.org/10.1007/s10661-017-6326-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s10661-017-6326-3

Keywords

Search

Navigation