Author : Quinn T. Smith
Publisher :
ISBN 13 :
Total Pages : 144 pages
Book Rating : 4.:/5 (124 download)
Book Synopsis Southeast Pot Shrimp Stock Status Prior to the 2018/19 Season by : Quinn T. Smith
Download or read book Southeast Pot Shrimp Stock Status Prior to the 2018/19 Season written by Quinn T. Smith and published by . This book was released on 2020 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spot shrimp Pandalus platyceros, and to a lesser extent coonstripe shrimp P. hysinotis, are targeted by a pot fishery in Southeast Alaska. Spot shrimp are protandric hermaphrodites with fairly narrow temperature and hard-bottom habitat requirements, and there is little Alaska-specific life history information. A fixed-quota harvest strategy is employed to manage the fishery; data are reviewed annually to determine stock status and guideline harvest levels (GHLs) are set within a guideline harvest range (GHR) and targeted inseason. The upper limits of GHRs were originally set based on historical harvest levels but have since been adjusted. Management is supported by a stock assessment program that includes fishery-independent pot surveys in five of 22 management units (accounting for 57% of the 10-year average annual harvest), commercial catch sampling and logbooks, and commercial catch and effort data. Data on catch rate (survey, logbook, and commercial), shrimp size, the length at which 50% are female (L50), and estimates of harvest rate are analyzed annually. Data from the most current season are compared to established baselines and scored to designate a stock status of “good”, “above average”, “moderate”, “below average”, or “poor”. For the 22 management units in Southeast Alaska, stock status was poor in two, below average in three, moderate in five, above average in seven, and good in two. The ‘Remainder of District 12’, District 14 and District 16 management units were closed for the 2017/18 season, so no stock statuses were calculated.