New Data on the Age and Growth of Greenland Halibut, Reinhardtius hippoglossoides (Pleuronectidae), from the Laptev Sea

Resumo

The age and growth characteristics of the Greenland halibut, Reinhardtius hippoglossoides, have been described from the Laptev Sea for the first time. In recent years, the species has substantially expanded its range eastward. The age of juveniles is from 2 to 4 years at a body length of 12.5–17.7 cm. The age of females varies from 2 yr (11.5 cm) to 10 yr (43.5–53.7 cm). The minimum age of males is 3 yr at a body length of 17.3–21.5 cm; the maximum age is 11 yr at 48.2–54.8 cm. The data obtained indicate a slower growth of Greenland halibut in the Laptev Sea compared to that of individuals from the Atlantic and Pacific Ocean basins. The main causes of this difference are the harsh Arctic conditions of the region and a poor forage base, represented mainly by Polar cod, Boreogadus saida.