2 research outputs found
A medium-term intervention study on the impact of high- and low-fat snacks varying in sweetness and fat content: large shifts in daily fat intake but good compensation for daily energy intake
A Global Review of Catch Efficiencies of Towed Fishing Gears Targeting Scallops
Publication history: Published online - 29 October 2022.The catch efficiency of towed fishing gears is the fraction of the target species in the gear
path that were caught and retained. Catch efficiency is fundamental for calculating population
status required for establishing fisheries management reference points. Consequently, catch
efficiency has been estimated for many commercially important scallop (Pectinid) fisheries.
This article synthesizes and discusses estimates of catch efficiency of towed gears used to
target scallops, the methods for estimating catch efficiency and the factors that influence
these estimates. There exists considerable variation in catch efficiency estimates among
studies (0.1 to 0.7), and it is important that this variation is accounted for during surveys
and stock assessments to avoid erroneous advice and estimates. The high variation was
driven by differences in experimental conditions, estimation methods and scallop behavior.
Scallop size and substrate type were the two most common reporting categories discussed
in the studies and consequently should be considered the two most important drivers of
catch efficiency. Other important factors such as gear specifications, and scallop species
were featured in some studies. This review will be highly useful for designing catch efficiency
experiments, survey design and stock assessments by understanding, and accounting for,
catch efficiency variation.This research was not funded by any particular grants. The
authors come from a range of institutions and their general
research time is funded by a variety of sources including
from research councils, charities, fishing industries and
governments