Length-weight relationship and condition factor of Trachurus trachurus found in the central-east region of the Moroccan Mediterranean

Hanae Nasri, Souad Abdellaoui, Abdelouadoud Omari, Omar Kada, Abdelhafid Chafi, Belkheir Hammouti, Khalid Chaabane


Trachurus trachurus, is a migratory, semi-pelagic species of the Carangidae family living in schools often associated with mackerel. This species is very common in the Mediterranean, and it is found on all Moroccan coasts. This study aims to determine the length-weight relationship and the condition factor (K) of Trachurus trachurus. Thus, 390 specimens were collected between August 2017 and August 2018 in the central-east region of the Moroccan Mediterranean. The parameters of the length-weight relationship were determined and analyzed by length and sex. It appears that this species has better growth in length than in weight, therefore having a negative or lower allometry. It varies according to sex, length, and season. This result shows that Trachurus trachurus in this study is not overweight in its habitat.


Condition factors Mediterranean; Length-weight relationship; Trachurus trachurus

Full Text:



Albo-Puigserver, M., Borme, D., Coll, M., Tirelli, V., Palomera, I., and Navarro, J. (2019). Trophic ecology of range-expanding round sardinella and resident sympatric species in the NW Mediterranean. Marine Ecology Progress Series, 620(2019), 139-154.

Andrade, H. A., and Campos, R. O. (2002). Allometry coefficient variations of the length–weight relationship of skipjack tuna (Katsuwonus pelamis) caught in the southwest South Atlantic. Fisheries Research, 55(1-3), 307-312.

Aristizabal, E. O. (2007). Energy investment in the annual reproduction cycle of female red porgy, Pagrus pagrus (L.). Marine Biology, 152(3), 713-724.

Azbaid, L., Belcaid, S., and Talbaoui, E. M. (2016). Anisakid Nematodes of Pagellus acarne and Trachurus trachurus, from North Atlantic Moroccan's Waters. Journal of Life Sciences, 10(6), 279-288.

Bhatta, S., Iwai, T., Miura, C., Higuchi, M., Shimizu-Yamaguchi, S., Fukada, H., and Miura, T. (2012). Gonads directly regulate growth in teleosts. Proceedings of the National Academy of Sciences, 109(28), 11408-11412.

Cardia, F., and Lovatelli, A. (2007). A review of cage aquaculture: Mediterranean Sea. FAO Fisheries Technical Paper, 498(2007), 159.

Costa, A. M. (2019). Reproductive cycle of the blue jack mackerel, Trachurus picturatus (Bowdich, 1825), off the Portuguese continental coast. Aquatic Living Resources, 32(2019), 14.

do Carmo Silva, J. P., da Costa, M. R., and Araújo, F. G. (2019). Energy acquisition and allocation to the gonadal development of Cynoscion leiachus (Perciformes, Sciaenidae) in a tropical Brazilian bay. Marine Biology Research, 15(2), 170-180.

Evagelopoulos, A., Batjakas, I., and Koutsoubas, D. (2017). Dužinsko-maseni odnos za 9 komercijalnih vrsta riba iz sjevernog Egejskog mora. Acta Adriatica: International journal of Marine Sciences, 58(1), 187-191.

Farabegoli, F., Nesci, S., Ventrella, V., Badiani, A., Albonetti, S., and Pirini, M. (2019). Season and Cooking May Alter Fatty Acids Profile of Polar Lipids from Blue‐Back Fish. Lipids, 54(11-12), 741-753.

Froese, R., (2006). Cube law, condition factor and weight–length relationships: History, meta-analysis and recommendations. Journal of Applied Ichthyology, 22(2006), 241–253.

Froese, R., Tsikliras, A. C., and Stergiou, K. I. (2011). Editorial note on weight–length relations of fishes. Acta Ichthyologica et Piscatoria, 41(4), 261-263.

González-Kother, P., González, M. T., and Oliva, M. E. (2020). Primera evaluación de la Atresia en el jurel Trachurus murphyi (Teleostei, Carangidae) en el Pacífico sureste. Revista de Biología Marina Y Oceanografía, 55(2), 100-109.

Gordó-Vilaseca, C., Pennino, M. G., Albo-Puigserver, M., Wolff, M., and Coll, M. (2021). Modelling the spatial distribution of Sardina pilchardus and Engraulis encrasicolus spawning habitat in the NW Mediterranean Sea. Marine Environmental Research, 169(2021), 105381.

Hajjej, G., Hattour, A., Hajjej, A., Cherif, M., and Allaya, H. (2012). Age and growth of little tunny, Euthynnus alletteratus (Rafinesque, 1810), from the Tunisian Mediterranean coasts. Cahiers De Biologie Marine, 53(1), 113-122.

Imsland, A.K., and Jonassen, T.M., (2003). Growth and age at first maturity in turbot and halibut reared under different photoperiods. Aquaculture International, 11(2003), 463–475.

Le Cren, E. D. (1951). The length-weight relationship and seasonal cycle in gonad weight and condition in the perch (Perca fluviatilis). The Journal of Animal Ecology, 20(2), 201-219.

Lloris, D., and Moreno, T., (1995). Distribution model and association in 3 pelagic congeneric species (trachurus spp) present in the iberic mediterranean-sea. Scientia Marina, 59 (3-4), 399-403.

Lugert, V., Thaller, G., Tetens, J., Schulz, C., and Krieter, J. (2016). A review on fish growth calculation: multiple functions in fish production and their specific application. Reviews in Aquaculture, 8(1), 30-42.

Mehanna, S., Soliman, B., Sayed, M., and Abdel Aliem, R. (2018). Seasonal growth of Arabian scad Trachurus indicus from the Gulf of Suez, Red Sea, Egypt. Egyptian Journal of Aquatic Biology and Fisheries, 22(1), 65-73.

Morales‐Medina, R., García‐Moreno, P. J., Pérez‐Gálvez, R., Muñío, M. M., Guadix, A., and Guadix, E. M. (2016). Nutritional indexes, fatty acids profile, and regiodistribution of oil extracted from four discarded species of the Alboran Sea: Seasonal effects. European Journal of Lipid Science and Technology, 118(9), 1409-1415.

Nash, R. D., Valencia, A. H., and Geffen, A. J. (2006). The origin of Fulton’s condition factor—setting the record straight. Fisheries, 31(5), 236-238.

Robinson, M. S., Anthony, T. R., Littau, S. R., Herckes, P., Nelson, X., Poplin, G. S., and Burgess, J. L. (2008). Occupational PAH exposures during prescribed pile burns. Annals of Occupational Hygiene, 52(6), 497-508.

Stergiou, K. I., and Karpouzi, V. S. (2002). Feeding habits and trophic levels of Mediterranean fish. Reviews in Fish Biology and Fisheries, 11(3), 217-254.

Williams, C. T., Klaassen, M., Barnes, B. M., Buck, C. L., Arnold, W., Giroud, S., Vetter, S.G., and Ruf, T. (2017). Seasonal reproductive tactics: annual timing and the capital-to-income breeder continuum. Philosophical Transactions of The Royal Society B: Biological Sciences, 372(1734), 20160250.

DOI: https://doi.org/10.17509/ijost.v6i3.37923


  • There are currently no refbacks.

Copyright (c) 2021 Indonesian Journal of Science and Technology

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Indonesian Journal of Science and Technology is published by UPI.
StatCounter - Free Web Tracker and Counter
View My Stats