https://vital.seals.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 https://vital.seals.ac.za/vital/access/manager/Repository/vital:36508 Wed 12 May 2021 22:53:51 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:36503 Wed 12 May 2021 20:00:41 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:27051 Wed 12 May 2021 18:18:24 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:20695 Wed 12 May 2021 18:14:25 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:2780 Wed 12 May 2021 17:54:35 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:36506 Wed 12 May 2021 17:36:30 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:2783 Wed 12 May 2021 17:23:58 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:3773 Wed 12 May 2021 17:13:34 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:30596 Wed 12 May 2021 17:07:32 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:2848 Wed 12 May 2021 16:45:29 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:11712 Wed 12 May 2021 16:39:09 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:36498 Wed 12 May 2021 15:50:49 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:40957 Wed 12 May 2021 13:50:01 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:43618 Tue 29 Jun 2021 13:53:22 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:48659 Tue 22 Mar 2022 12:09:14 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:48494 Thu 17 Mar 2022 14:33:19 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:3562 Thu 13 May 2021 10:44:01 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:36504 Thu 13 May 2021 08:21:46 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:36510 Thu 13 May 2021 05:37:11 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:36507 Thu 13 May 2021 04:34:30 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:10267 Thu 13 May 2021 04:19:12 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:33771 Thu 13 May 2021 03:27:28 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:36511 Thu 13 May 2021 02:13:35 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:36509 Thu 13 May 2021 01:54:44 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:36499 Thu 13 May 2021 00:31:49 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:21302 Thu 13 May 2021 00:02:41 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:65763 200 km). These characteristics provide opportunities for high levels of connectivity, and as such, the stock structure is not well understood. We applied an integrated, multidisciplinary approach to provide an improved understanding of the complex stock structure dynamics for Patagonian toothfish on the Patagonian Shelf, specifically in relation to the shelf, slope, and deep-sea plains around the Falkland Islands. Research results were focused on aspects pertaining to (1) geographic variation in phenotypic characters (otolith shape); (2) a description of the spatial-temporal distribution patterns; (3) the active movements of deep-sea adults (tag-recapture study); and (4) the identification of early life-history dispersal through otolith microstructure and microchemical chronologies. Results from the study indicate high regional connectivity during the early life-history stages derived from at least two spawning contingents into spatially discrete nursery areas (cohort groups) on the Falklands Shelf. Fish followed distinct ontogenetic pathways into deeper waters adjacent to the areas wherein juvenile settlement into a demersal habitat occurred. There is little to no evidence of mixing among cohort groups during their ontogenetic migration into deep-sea adult habitats, reflecting a mixed population based on oceanographically defined egg and larval dispersal. The majority of the adult component of the population continue to display high site fidelity. However, between 9 and 25% of the population, consisting predominantly of larger reproductively capable adults undertake long-distance dispersal behaviour, identified as home-range relocations from the adult deep-sea habitats towards three of the known southern spawning grounds in the region. Results are suggestive of a requirement for improved collaborative efforts for regionally-based management approaches with careful consideration of local stock contingents. Future monitoring and research priorities should focus on the identification of reproductive potential, dispersal pathways and settlement patterns of stock contingents to inform the dynamics of mixed stock origins across the Patagonian region. While many aspects regarding the stock structure remain unresolved, results derived from the current studies can be used to inform the development of management measures to ensure the continued recovery and sustainable management of Patagonian toothfish within the region.]]> Thu 11 Jan 2024 18:07:47 SAST ]]> https://vital.seals.ac.za/vital/access/manager/Repository/vital:43337 Fri 23 Feb 2024 10:19:11 SAST ]]>