Growth Data - Characterization of Sexual Growth Dimorphism in Sablefish

Metadata Updated: February 8, 2018

Sexual growth dimorphism (SGD) is a common phenomenon in nature. Numerous marine fishes exhibit SGD, with females often growing faster and attaining larger sizes than males. Sablefish (Anoplopoma fimbria) is an example of one such species. The purpose of this project is to characterize SGD to determine when, how and why it occurs, whether particular families or populations exhibit different extents of SGD, and its influence on current aquaculture and fisheries management. Sex control experiments we previously conducted with PIT-tagged sablefish provided the first glimpse into when SGD occurs and to what extent. Female body size surpassed that of males early in development and represented a >30% difference in body weight by ~2 years of age. Through a current study we now aim to precisely define the window when this divergence occurs and determine if there is among-family variance in its extent. In addition, tissue samples are being regularly collected for physiological and genetic analyses to determine the basis of SGD. This could have profound impacts on feed conversion efficiency and growth in aquaculture and thus greatly influence economics of producing sablefish. Information on this phenomenon is not only relevant to sablefish aquaculture and fisheries management, but should ultimately apply to numerous other marine finfishes. Fish in experiments are often PIT tagged and regularly checked for growth in fork length and body weight.

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Metadata Date April 5, 2017
Metadata Created Date March 21, 2016
Metadata Updated Date February 8, 2018
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Harvested from NOAA CSW Harvest Source

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Resource Type Dataset
Metadata Date April 5, 2017
Metadata Created Date March 21, 2016
Metadata Updated Date February 8, 2018
Reference Date(s) (publication)
Responsible Party (); Northwest Fisheries Science Center (Point of Contact, Custodian)
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Access Constraints Access Constraints: NA | Use Constraints: Disclaimer - While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Bbox East Long -122.3062
Bbox North Lat 47.6449
Bbox South Lat 47.569
Bbox West Long -122.5547
Coupled Resource
Frequency Of Update
Guid gov.noaa.nmfs.inport:30873
Harvest Object Id 93be414d-1335-4803-b3dc-7034f6d99638
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
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Metadata Language eng
Metadata Type geospatial
Progress onGoing
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Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2014-01-14

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