Evaluating otolith growth patterns to discriminate among subpopulations of Northwest Atlantic cod (Gadus morhua): applicability of a new model to NEFSC bottom trawl survey samples

Lefebvre, L.S.; Robillard, E.; Palmer, M.C.; McBride, R.S.

doi:10.25923/gwtd-2r82

i

Evaluating otolith growth patterns to discriminate among subpopulations of Northwest Atlantic cod (Gadus morhua): applicability of a new model to NEFSC bottom trawl survey samples

2021
By Lefebvre, L.S. ; Robillard, E. ; Palmer, M.C. ; ...
Series: Northeast Fisheries Science Center reference document 21-06

Details

Personal Author:

Lefebvre, L.S. ; Robillard, E. ; Palmer, M.C. ; McBride, R.S.
Corporate Authors:

Northeast Fisheries Science Center (U.S.)
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; NEFSC (Northeast Fisheries Science Center)
Description:

US Atlantic cod (Gadus morhua) stock structure is complex, with two sympatric spawning subpopulations found in the western Gulf of Maine. Dean et al. (2019) developed a model to distinguish these two cod subpopulations based on measurements of otolith annuli. In this pilot study project, we assess the feasibility of this new model by applying it to independent samples of Atlantic cod otoliths collected aboard the Northeast Fisheries Science Center’s bottom trawl surveys.
Keywords:

Cod, Otolith
Series:

Northeast Fisheries Science Center reference document 21-06
DOI:

https://doi.org/10.25923/gwtd-2r82
Document Type:

Reference Document
Rights Information:

Public Domain
Compliance:

Submitted
Main Document Checksum:

urn:sha256:e38945d64781bd70ba84b112c2d20b66ccc5badc7bcfa2c6e58a3f96c40901b8
Download URL:

https://repository.library.noaa.gov/view/noaa/32077/noaa_32077_DS1.pdf
File Type:

[PDF - 1.52 MB ]

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