BIOTIC Species Information for Dipturus batis
Researched byKen Neal & Paolo Pizzolla Data supplied byMarLIN
Refereed byThis information is not refereed.
General Biology
Growth formPisciform
Feeding methodPredator
Environmental positionDemersal
Typical food typesBristle worms, sand eels, crabs and flatfish HabitFree living
Bioturbator FlexibilityLow (10-45 degrees)
FragilityIntermediate SizeLarge(>50cm)
Height Growth Rate0.9 - 14 kg/year
Adult dispersal potential100-1000m DependencyIndependent
General Biology Additional InformationThe growth rate listed above may seem quite rapid but if weight at maturity is taken into consideration, 54 kg for males (Muus & Dahlstrom, 1974) and 94 kg for females (Walker & Hislop 1998) it can be seen that it takes many years to reach maturity. The data for growth rate came from tag and release studies off the west coast of Scotland (Sutcliffe, 1994; Little, 1995, 1998) by comparing weight change of skate between captures. Skates seem to have a start-and-stop growth pattern, where they have rapid growth for a short period and then remain at that weight for some time with no growth until they have another episode of rapid growth (Sutcliffe, 1994).
Biology References Muus & Dahlstrom, 1974, Sutcliffe, 1994, Walker & Hislop, 1998, Brander, 1981, Little, 1998, Little, 1995, Mitchell & Gallagher, 2000, Anon, 1999vii,
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