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Growth and Age of the Roughhead Grenadier Macrourus berglax in Waters off Southwest Greenland

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Abstract

Data on the age and growth of the roughhead grenadier Macrourus berglax from waters off Southwest Greenland have been obtained based on the analysis of otoliths. Specimens with a preanal length of 5−39 cm, a weight of 7−5275 g, and age from 2 to 22 years are recorded in trawl catches. Roughhead grenadier exhibits a similar rate of linear growth in waters off Southwest Greenland and other parts of the range in the Northwest Atlantic. No considerable differences from the rate of the linear growth calculated earlier from scales for the species in waters off West Greenland have been found. In the recent period, the rate of weight gain in roughhead grenadier in waters off Southwest Greenland has been lower than in the Northwest Atlantic in the first half of the 1980s. The age of mass maturation in males (7–9 years) and females (16–17 years) in waters off West and East Greenland is somewhat higher than in coastal waters of Norway and the Northwest Atlantic.

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Authors and Affiliations

  1. Russian Research Institute of Fisheries and Oceanography (VNIRO), Moscow, 107140, Russia

    A. M. Orlov, E. V. Vedishcheva, A. O. Trofimova & S. Yu. Orlova

  2. Severtsov Institute of Ecology and Evolution (IEE), Russian Academy of Sciences, Moscow, 119071, Russia

    A. M. Orlov

  3. Dagestan State University, Makhachkala, the Republic of Dagestan, 367000, Russia

    A. M. Orlov

  4. Tomsk State University, Tomsk, 634050, Russia

    A. M. Orlov

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  1. A. M. Orlov
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  2. E. V. Vedishcheva
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  3. A. O. Trofimova
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  4. S. Yu. Orlova
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Correspondence to A. M. Orlov.

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Original Russian Text © A.M. Orlov, E.V. Vedishcheva, A.O. Trofimova, S.Yu. Orlova, 2018, published in Voprosy Ikhtiologii, 2018, Vol. 58, No. 3, pp. 348–355.

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Orlov, A.M., Vedishcheva, E.V., Trofimova, A.O. et al. Growth and Age of the Roughhead Grenadier Macrourus berglax in Waters off Southwest Greenland. J. Ichthyol. 58, 389–395 (2018). https://doi.org/10.1134/S0032945218030098

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  • DOI: https://doi.org/10.1134/S0032945218030098

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