Climate and fishing: Disentangling factors affecting growth in Scotian shelf haddock (Melanogrammus aeglefinus) ...

• Main Authors: Neuheimer, Anna B., Taggart, Christopher T.
• Format: Conference Object
• Language: unknown
• Published: ASC 2009 - Theme session E 2024
• Subjects: Fisheries and aquaculture; Pressures, impacts, conservation, and management; Northwest Atlantic
• Online Access: https://dx.doi.org/10.17895/ices.pub.25070774; https://ices-library.figshare.com/articles/conference_contribution/Climate_and_fishing_Disentangling_factors_affecting_growth_in_Scotian_shelf_haddock_Melanogrammus_aeglefinus_/25070774

No abstracts are to be cited without prior reference to the author.Fish growth is affected by variations in a number of factors including climate (temperature) and size-selective fishing. The effects of these factors on resulting size-atage variation must be disentangled to allow for the development of successful management strategies. Of the factors impacting variation in growth, temperature is a controlling factor governing growth via reaction rates at the cellular (metabolic) level and the effects of temperature on size-at-age variation must be examined foremost. Disentangling effects of temperature on size-at-age requires a metric relevant to the integrated growth metric that is size-at-age. In previous work, we show this physiologically relevant metric is the growing degree-day (GDD, ºC d). Here we employ the GDD metric to quantify the influence of temperature variation on a 30-yr decline in length-at-age among mature, eastern Scotian Shelf (Northwest Atlantic Fisheries Organization statistical ...