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Age, Growth, And Reproduction Of The Roughtail Skate Bathyraja Trachura (Gilbert, 1892) From The Eastern North Pacific, Chanteì Davis
Age, Growth, And Reproduction Of The Roughtail Skate Bathyraja Trachura (Gilbert, 1892) From The Eastern North Pacific, Chanteì Davis
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Age and growth characteristics of the roughtail skate Bathyraja trachura, a poorly-known deep-water species, were determined from samples collected along the continental slope of the contiguous western United States. A new maximum size was established at 91 cm TL. Age was estimated using a traditional structure (vertebral thin sections) and an alternative non-lethal structure (caudal thorns). Based on poor precision and significantly lower age estimates when compared to age estimates from thin sections, caudal thorns were determined not to be a useful ageing structure for this species. Age estimates from vertebral thin sections were used to model growth. Annual band …