The Optimal Recovery of a Semelparous Fish Population with Delayed Recruitment Public Deposited

http://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/mc87pr70v

Research Paper

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Annual recruitment of the New Zealand longfin eel (Anguilla dieffenbachii) has decreased by around 75 percent since heavy levels of commercial fishing began in the early 1970s. Given the unsustainability of existing regulatory policy, a deterministic multiple-cohort bioeconomic model is developed and applied to this system to gain insight into the optimal age structure and harvest profile for this species. This model illustrates that the rapid recovery of this fishery would rely on the ability of managers to sufficiently limit the harvest of more valuable year classes to allow for the rebuilding of spawning biomass. The importance of decreasing the degree of exploitation within the fishable population and lessening the time that longfins are available to harvest through higher minimum weight restrictions is also highlighted. The need for conservative management is reinforced when uncertainty regarding the effect of exploitation on fecundity and barriers to the successful instigation of these policies are considered.
Resource Type
Date Available
Date Issued
Citation
  • Doole, Graeme J., Robert R. Alexander. 2002. The Optimal Recovery of a Semelparous Fish Population with Delayed Recruitment. Peer Review: No. In: Proceedings of the Eleventh Biennial Conference of the International Institute of Fisheries Economics and Trade, August 19-22, 2002, Wellington, New Zealand: Fisheries in the Global Economy. Compiled by Ann L. Shriver. International Institute of Fisheries Economics & Trade, Corvallis, Oregon, USA, 2002. CD ROM.
Conference Name
Keyword
Subject
Rights Statement
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Katy Davis(kdscannerosu@gmail.com) on 2015-09-01T23:34:58Z (GMT) No. of bitstreams: 1 G_267.pdf: 197808 bytes, checksum: 2c45fbc1a70cd2df9bad9412961fd873 (MD5)
  • description.provenance : Made available in DSpace on 2015-09-01T23:34:58Z (GMT). No. of bitstreams: 1 G_267.pdf: 197808 bytes, checksum: 2c45fbc1a70cd2df9bad9412961fd873 (MD5) Previous issue date: 2002-08
  • description.provenance : Submitted by Katy Davis (kdscannerosu@gmail.com) on 2015-09-01T21:06:44Z No. of bitstreams: 1 G_267.pdf: 197808 bytes, checksum: 2c45fbc1a70cd2df9bad9412961fd873 (MD5)

Relationships

In Administrative Set:
Last modified: 07/17/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items