Related items
Showing items related by metadata.
-
MeetingMeeting documentA habitat-based simulation framework to design tag-recapture experiments for tunas in the Indian Ocean. Application to the Skipjack (Katsuwonus Pelamis) population 2013
Also available in:
No results found. -
MeetingMeeting documentAre Indian Ocean tuna populations assessed and managed at the appropriate spatial scale? Brief review of the evidence and implications 2013
Also available in:
No results found.Tu species maged under the auspices of the Indian Ocean Tu Commission have generally been assumed (explicitly or implicitly) to be highly mobile and consist of a single panmictic spawning population for the purposes of stock assessment and magement. In this paper, we: i) briefly review evidence that questions this assumption (largely based on recent population genetics and tagging studies), ii) qualitatively discuss the implications of violating this assumption, and iii) outline some elements of a collaborative research plan to resolve these issues and mitigate the consequences of getting this assumption wrong. This paper is intended to stimulate discussion within the IOTC scientific community about the potential importance of population structure within the Indian Ocean and extent to which it should be considered a research and magement priority. -
MeetingMeeting documentStock and risk assessment of bigeye tuna (Thunnus obesus) in the Indian Ocean by Age-Structured Production Model (ASPM 2013
Also available in:
No results found.We applied an Age-Structured Production Model (ASPM) to assess the status of the bigeye tu stock (Thunnus obesus) in the Indian Ocean using 61 years of data (1952-2012). The assessment results suggested that MSY=120,500 tons (catch in 2012=99,899 tons) and the SSB ratio (2012) is near the MSY level (1.10), while F ratio (2012) is much lower than the MSY level (0.42). The results suggested that the bigeye stock is in the healthy condition and the projection based on the current catch level (99,89 9 tons) suggest that the current level can increase the stock from 2013 and after.
Users also downloaded
Showing related downloaded files
No results found.