FLEISCHWIRTSCHAFT international 6/2017

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Fleischwirtschaft international 6_2017
Research &Development
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Authors address
Dr.Waseem Hussain Raja and Dr.Sunil Kumar, Associate Professor &Head, Division of Livestock
Products Technology, Faculty of Veterinary Science &Animal Husbandry, R.S. Pura, Sher-e-Kashmir
University of Agricultural Sciences and Technology of Jammu (SKUAST-Jammu), J&K,India, and
Dr.Parveez Ahmad Para (corresponding author: Parveezpara621@gmail.com), Assistant Professor,
Division of Livestock Products Technology, Arawali Veterinary College, Bajor, Sikar (RAJUVAS)
Rajasthan -332001, India
University of Guelph
Fisheries given asolution to overharvesting
Many commercial fisheries are
threatened by overharvesting.
However, they can't address the
problem because of inadequate
scientific information, from overall
population numbers to data on
how fast fish grow and reproduce.
University of Guelph researchers
have developed amodel using
information about landed fish
catches and prices for any
species. This model allows fisheries
to net enough to meet rising
demand while ensuring adequate
income and replenishment of
natural stocks. The research was
published in Proceedings of the
National Academy of Sciences .
"Weknow fish are getting rarer,"
said John Fryxell, aUofGintegrative
biology professor and lead
author of the paper.
For example, the collapse of
once-abundant cod stocks in the
North Atlantic led to afederal
fishing moratorium on the species
in the 1990s. Managers and fisheries
are hampered by alack of
information, from overall population
numbers to data on how fast
fish grow and reproduce. As the
global population increases and
demand for fish protein rises –
particularlyindeveloping countries
–more fisheries are chasing
smaller fish populations in hopes
of recouping higher prices for their
efforts. This further threatens fish
stocks that are already being
over-exploited, Fryxell said. Finding
the "sweet spot" –where the
world's fisheries can function all
the while protecting natural fish
stocks –was the goal of the new
Researchers have
developed amodel
using information
about landed fish
catches and prices for
any species to avoid
overharvesting.
Bernd Christian
Gassner /pixelio.de
model. "It gives fisheries and conservation
managers atool for
balancing those competing demands,"
he said.
The researchers developed the
model using information about
landed fish catches and prices for
any species to determine by how
much agiven fishery has been
overharvested. Basically, the
model encourages fisheries to
reduce short-term harvests in
order to realize higher long-term
yields without sacrificing economic
return. "The model is based
on the premise that it's just as
profitable to have high catches
and low prices as high prices and
lower catches," said Fryxell. That
strategy also helps ensure amore
sustainable fishery over the long
term, he added.
Supportive policy changes might
include introducing tariffs that
make it less profitable to fish
low-yielding, high-priced species.
Or managers might encourage fish
farming to provide alternative
protein sources and push down
prices of wild stocks, he said.
"We'd have abetter world where
the fishery is making money, and
we're feeding more people with
more fish in the ocean." The research
also connects the world's
fisheries with UofG's Food From
Thought project, Fryxell said.
Co-authors are integrative biology
professor Kevin McCann and other
researchers at UofG,McGill University,
the University of Washington,
and Fisheries and Oceans Canada.
//www.uoguelph.ca