Alaska Pacific University
  • Academics
  • Admissions & Costs
  • Student Life & Activities
  • About APU
  • Virtual Campus Tour
  • DONATE
  • Request Info
  • Apply
  • 1 (800) 252 7528
  • myAPU
  • Directory
  • Library
  • Courses
  • Catalog
  • Blackboard
  • (907) 564-8362
  • Skip to primary navigation
  • Skip to main content
  • Skip to footer
  • myAPU
  • Directory
  • Library
  • Courses
  • Catalog
  • Blackboard
  • (907) 564-8362
  • DONATE
  • Request Info
  • Apply
  • 1 (800) 252 7528
Alaska Pacific University

Discover Active Learning

  • Academics
  • Admissions & Costs
  • Student Life & Activities
  • About APU
  • Virtual Campus Tour
  • DONATE
  • Request Info
  • Apply
  • 1 (800) 252 7528
  • myAPU
  • Directory
  • Library
  • Courses
  • Catalog
  • Blackboard
  • (907) 564-8362
Headshot of Cameron Provost

Cameron Provost

Age, growth, and sexual maturity of the deepsea skate, Bathyraja abyssicola

Research into the age, growth, and reproductive characteristics of chondrichthyan fishes has increased substantially over the past couple of decades. This study set out to estimate age deepsea skate, Bathyraja abyssicola, using vertebral centra and caudal thorns, estimate length at age, and determine length at maturity. Sixty-three specimens of B. abyssicola (n=29 males; n=34 females) were taken on National Marine Fisheries Service bottom trawl surveys between 2001 and 2012. Information derived and structures collected from these samples included sex, maturity class, total length, caudal thorns, and vertebrae. Ageing methods attempted include histology and gross sectioning (vertebral centra) and surface staining (caudal thorns). Moderate success with centra sectioned using the histological method allowed some inference to be made into life history characteristics. Deepsea skates appear to have slow average growth (26 mm yr-1 ±5.41, 95% c.i.) and mature at a large size (males: TL50 = 1175.4 mm, females: TL50 = 1267.3 mm). Band pair counts were not validated as true ages. Males from which growth bands could be enumerated were smaller (𝑛 = 10, 𝑥̅ = 718 mm, SD = 209 mm) on average than that for females (n = 7, 𝑥̅ = 990 mm, SD = 319 mm). This study provides the first attempt to assess B. abyssicola age, growth rate, and sexual maturity traits – information needed for informed skate management.

Funding for this work was provided by the Pollock Conservation Cooperative via the Alaska Education Tax Credit Program.

You Are Here: Home / People / Cameron Provost

Footer

Alaska Pacific University
4101 University Drive • Anchorage, Alaska 99508
  • Careers
  • Donate
  • Conferencing Services
  • Campus Store
  • Transcripts

© 2023 Alaska Pacific University · All Rights Reserved · Notice Regarding Web Accessibility · Privacy Policy · Website Credits