Annual and inter-annual trends in the zooplankton prey and growth of Atlantic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) larvae on Georges Bank ...

• Main Authors: Buckley, L.J., Durbin, E.G.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: ASC 2004 - O - Theme session 2024
• Subjects: Fisheries and aquaculture; Ecosystem observation, processes and dynamics; atlantic cod; Gadus morhua
• Online Access: https://dx.doi.org/10.17895/ices.pub.25349905.v1; https://ices-library.figshare.com/articles/conference_contribution/Annual_and_inter-annual_trends_in_the_zooplankton_prey_and_growth_of_Atlantic_cod_Gadus_morhua_and_haddock_Melanogrammus_aeglefinus_larvae_on_Georges_Bank/25349905/1

No abstracts are to be cited without prior reference to the author.The dominant copepod taxa on Georges Bank were monitored between January and June of 1995 through 1999, using a pump sampler and a 1-M MOCNESS. Between March and May of these years over 10,000 cod and haddock larvae were collected and recent growth of individual larvae estimated using RNA/DNA ratio analysis. Undertaken as part of the US GLOBEC NW Atlantic Georges Bank Program, the zooplankton sampling was completed on broadscale cruises covering much of the Bank, while most of the larval collections were made on process cruises concentrated on the southern flank. Together the two data sets afforded the opportunity to examine prey production and larval growth over extended spatial and temporal scales. Indices of prey abundance were estimated for different size-classes of larvae. Normalized prey counts (#•M-3) and prey biomass concentration (μg dry weight•M-3) increased between January and May of each year. Following a similar trend, larval ...