Scientia Marina, Vol 79, No 1 (2015)

Determination of age and growth of the horned octopus Eledone cirrhosa (Cephalopoda: Octopoda) using stylet increment analysis


https://doi.org/10.3989/scimar.04137.23A

Marcos Regueira
Instituto de Investigaciones Marinas CSIC, Spain

Ángel F. González
Instituto de Investigaciones Marinas CSIC, Spain

Ángel Guerra
Instituto de Investigaciones Marinas CSIC, Spain

Abstract


Age and growth of the horned octopus Eledone cirrhosa are estimated for the first time by stylet increment analysis. Specimens were collected between March 2009 and March 2010 from the commercial trawl fishery operating off northwestern Iberian coasts. A pool of stylets representing all size classes were defined by means of modal progression analysis performed separately for each sex in northern and western fishing grounds over a total of 2220 individuals (306 males and 595 females from the northern fishing ground; and 379 males and 940 females from the western fishing ground). In total, 122 stylets belonging to individuals with a total weight ranging from 67 to 950 g were successfully analysed. Age of the specimens was estimated assuming a daily deposition rate of growth increments within the stylet. Estimated age of the specimens varied from 106 to 516 days. Differential longevity between sexes was observed, with females reaching a life span of 17 months while males attained reached only 14 months, although the possibility that this difference might be even greater is discussed. Based on estimated age, hatching date was back-calculated and it was concluded that hatching occurs throughout the year, with a peak in winter. Relative instantaneous growth rates estimated for 90-day age classes, ranged from 0.03% to 2.17% of body weight per day, depending on age. The results obtained are compared with the information available on this species.

Keywords


Eledone cirrhosa; stylet increment analysis; age; life span; growth; NW Iberian Peninsula

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References


Barratt I.M., Allcock, A.L. 2010. Ageing octopods from stylets: development of a technique for permanent preparations. ICES J. Mar. Sci. 67: 1452–1457. http://dx.doi.org/10.1093/icesjms/fsq047

Bhattacharya C.G. 1967. A simple method of resolution of a distribution into Gaussian components. Biometrics. 23: 115-135. http://dx.doi.org/10.2307/2528285 PMid:6050463

Boyle P.R. 1983. Eledone cirrhosa. In: Boyle P.R. (ed.), Cephalopod life cycles. Vol 1: Species Accounts. Academic Press. London, pp. 365-386.

Boyle P.R. 1986. A descriptive ecology of Eledone cirrhosa (Mol- lusca: Cephalopoda) in Scottish waters. J. Mar. Biol. Ass. U.K. 66: 855-865. http://dx.doi.org/10.1017/S0025315400048487

Boyle P.R., Knobloch D. 1982. On growth of the Octopus Eledone cirrhosa. J. Mar. Biol. Ass. U.K. 62: 277-296. http://dx.doi.org/10.1017/S0025315400057283

Boyle P.R., Knobloch D. 1983. The female reproductive cycle of the octopus, Eledone cirrhosa. J. Mar. Biol. Ass. U.K. 63: 71-83. http://dx.doi.org/10.1017/S002531540004981X

Boyle P.R., Rodhouse P.G. 2005. Cephalopods. Ecology and Fisheries, Blackwell Science Ltd, Oxford, 464 pp.

Canali E., Ponte G., Belcari P., et al. 2011. Evaluating age in Octopus vulgaris: estimation, validation and seasonal differences. Mar. Ecol. Prog. Ser. 441: 141-149. http://dx.doi.org/10.3354/meps09399

Cortez T., González Á.F., Guerra Á. 1999. Growth of Octopus mimus (Cephalopoda, Octopodidae) in wild populations. Fish. Res. 42: 31-39. http://dx.doi.org/10.1016/S0165-7836(99)00040-5

Doubleday Z., Semmens J., Pecl G., et al. 2006. Assessing the validity of stylets as ageing tools on Octopus pallidus. J. Exp. Mar. Biol. Ecol. 338(1): 35-42. http://dx.doi.org/10.1016/j.jembe.2006.06.027

Forsythe J.W. 1984. Octopus joubini (Mollusca: Cephalopoda): a detailed study of growth through the full life cycle in a closed seawater system. J. Zool. 202: 393-417. http://dx.doi.org/10.1111/j.1469-7998.1984.tb05091.x

Forsythe J.W. Van Heukelem W.F. 1987. Growth. In: Boyle P.R. (ed.), Cephalopod Life Cycles Vol 2: Comparative Reviews. Academic Press. London, pp. 135-156.

Gago J., Cabanas J.M., Casas G., et al. 2011. Thermohaline measurements in the continental shelf zone of the NW Iberian Peninsula, 1994-2006. Clim. Res. 48: 219-229. http://dx.doi.org/10.3354/cr00943

González Á.F., Otero J., Pierce G.J., et al. 2010. Age, growth, and mortality of Loligo vulgaris wild paralarvae: implications for understanding of the life cycle and longevity. ICES J. Mar. Sci. 67: 1119-1127. http://dx.doi.org/10.1093/icesjms/fsq014

Hermosilla C.A., Rocha F., Fiorito G., et al. 2010. Age validation in common octopus Octopus vulgaris using stylet increment analysis. ICES J. Mar. Sci. 67: 1458-1463. http://dx.doi.org/10.1093/icesjms/fsq054

Hernandez-Lopez J.L., Castro-Hernandez J.J., Hernandez-Garcia V. 2001. Age determined from the daily deposition of concentric rings on common octopus (Octopus vulgaris) beaks. Fish. Bull. 99: 679-684.

Inejih C.A. 2000. Dynamique spatio-temporelle et biologie du poulpe (Octopus vulgaris) dans les eaux mauritaniennes: modélisation de l'abondance et aménagement des pêcheries. Ph. D. thesis. Université de Bretagne Occidentale, 251 pp.

Jackson G.D. 1994. Application and future potential of statolith increment analysis in squids and sepioids. Can. J. Fish. Aquat. Sci. 51: 2612-2625. http://dx.doi.org/10.1139/f94-261

Keyl F., Argüelles J., Tafur R. 2011. Interannual variability in size structure, age, and growth of jumbo squid (Dosidicus gigas) assessed by modal progression analysis. ICES J. Mar. Sci. 68: 507-518. http://dx.doi.org/10.1093/icesjms/fsq167

Lefkaditou E., Papaconstantinou C. 1995. Distribution, growth and maturity of Eledone cirrhosa (Cephalopoda: Octopoda) in the Thracian Sea (eastern Mediterranean). Rapp. Comm. int. Mer Médit. 34: 247.

Leporati S.C., Semmens J.M., Pecl G.T. 2008. Determining the age and growth of wild octopus using stylet increment analysis. Mar. Ecol. Prog. Ser. 367: 213-222. http://dx.doi.org/10.3354/meps07558

Leporati S.C., Hart A.M. 2014. Stylet weight as a proxy for age in a merobenthic octopus population. Fish. Res. 161: 235-243. http://dx.doi.org/10.1016/j.fishres.2014.08.001

Mangold-Wirz K. 1963. Biologie des Céphalopodes bentiques et nectoniques de la Mer Catalane. Vie Milieu 13(Suppl.): 1-285.

Mangold K., Boletzky S.V., Frösch D. 1971. Reproductive biology and embryonic development of Eledone cirrhosa (Cephalopoda: Octopoda). Mar. Biol. 8: 109-117. http://dx.doi.org/10.1007/BF00350926

Moriyasu M. 1988. Analyse de la maturation sexuelle d'Eledone cirrhosa (Cephalopoda: Octopoda) du golfe du Lion. Aquat. Living. Resour. 1: 59-65. http://dx.doi.org/10.1051/alr:1988007

Perales-Raya C., Bartolomé A., García-Santamaría M.T., et al. 2010. Age estimation obtained from analysis of octopus (Octopus vulgaris Cuvier, 1797) beaks: Improvements and comparisons. Fish. Res. 106: 171-176. http://dx.doi.org/10.1016/j.fishres.2010.05.003

Pierce G.J., Guerra A. 1994. Stock assessment methods used for cephalopod fisheries. Fish. Res. 21: 255-285. http://dx.doi.org/10.1016/0165-7836(94)90108-2

Pierce G.J., Valavanis V.D., Guerra A., et al. 2008. A review of cephalopod-environment interactions in European Seas. Hydrobiologia. 612: 49-70. http://dx.doi.org/10.1007/s10750-008-9489-7

Regueira M., González A.F., Guerra Á., et al. 2013. Reproductive traits of horned octopus Eledone cirrhosa in Atlantic Iberian waters. J. Mar. Biol. Ass. U.K. 93: 1641-1652. http://dx.doi.org/10.1017/S0025315413000118

Regueira M., González A.F., Guerra A. 2014. Habitat selection and population spreading of the horned octopus Eledone cirrhosa (Lamarck, 1798) in Galician waters (NW Atlantic). Fish. Res. 152: 66-73. http://dx.doi.org/10.1016/j.fishres.2013.09.003

Rodríguez-Domínguez A., Rosas C., Méndez-Loeza I., et al. 2013. Validation of growth increments in stylets, beaks and lenses as ageing tools in Octopus maya. J. Exp. Mar. Biol. Ecol. 449: 194-199. http://dx.doi.org/10.1016/j.jembe.2013.10.001

Sánchez P., Martín P. 1993. Population dynamics of the exploited cephalopod species of the Catalan Sea (NW Mediterranean). Sci. Mar. 57: 153-159.

Semmens J.M., Pecl G.T., Villanueva R., et al. 2004. Understanding octopus growth: patterns, variability and physiology. Mar. Freshwater Res. 55: 367-377. http://dx.doi.org/10.1071/MF03155

Zar J.H. 1984. Biostatistical analysis. Englewood Cliffs, NJ: Prentice-Hall. 718 pp. PMid:6436396




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