Details:

Journal Title:
Fishery Bulletin
Personal Author:
Doukakis, Phaedra ; Mora, Ethan A. ; Wang, Susan ; Reilly, Paul ; Bellmer, Russ ; ... More +
Doukakis, Phaedra ; Mora, Ethan A. ; Wang, Susan ; Reilly, Paul ; Bellmer, Russ ; Lesyna, Kristine ; Tanaka, Travis ; Hamda, Natnael ; Moser, Mary L. ; Erickson, Daniel L. ; Vestre, Jason ; McVeigh, Jon ; Stockmann, Kevin ; Duncan, Kristen ; Lindley, Steven T. Less -
NOAA Program & Office:
NMFS (National Marine Fisheries Service) ; OP (Office of Policy) ; SWFSC (Southwest Fisheries Science Center) ; NWFSC (Northwest Fisheries Science Center) ; WCR (West Coast Region) ; ... More +
NMFS (National Marine Fisheries Service) ; OP (Office of Policy) ; SWFSC (Southwest Fisheries Science Center) ; NWFSC (Northwest Fisheries Science Center) ; WCR (West Coast Region) ; CIMEC (Cooperative Institute for Marine Ecosystems and Climate) Less -
Description:
Understanding postrelease effects of incidental capture on fish species of conservation concern is critically needed. We collaborated with commercial fishermen to estimate postrelease survival of green sturgeon (Acipenser medirostris) captured and released from bottom trawls used to target California halibut (Paralichthys californicus). We developed a method for interpreting acceleration, depth, and temperature data transmitted from pop-up satellite archival tags to classify the fate of individuals following capture and release in fishing operations. We first deployed SeaTag-MOD satellite tags on known living and dead sturgeon to develop a support vector machine that uses accelerometer readings to classify tagged fish as alive or dead. In 2015 and 2016, fishermen and West Coast Groundfish Observer Program observers tagged 76 green sturgeon (69–135 cm fork length) encountered as bycatch, yielding 51 useable data sets. Eleven sturgeon were classified as having died after release, 9 of which died within our designated 21-d (504 h) study period. Some green sturgeon entered the San Francisco Bay Delta after being tagged, indicating movement between ocean and estuary environments. Research is needed to understand how to minimize effects of handling time and trawl bycatch mortality.
Keywords:
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Bycatches (Fisheries) California Halibut Fish Tagging Green Sturgeon Trawls And Trawling
Source:
Fish. Bull. 118:63–73 (2020).
DOI:
https://doi.org/10.7755/FB.118.1.6
Document Type:
Journal Article
Place as Subject:
San Francisco Bay (Calif.)
Rights Information:
Public Domain
Compliance:
Submitted
Main Document Checksum:
[+]
urn:sha256:7708b8d05022aebc7ce0d92f6b321fc7ebec50a1af76c13faec74f3b7021d0a2
Download URL:
https://repository.library.noaa.gov/view/noaa/40517/noaa_40517_DS1.pdf
File Type:

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