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Sea Mammal Research Unit

SMRU News Centre

item 1003
[03-04-2012 to 31-01-2013]


News Item:
Fishing should be halved to save protected species find St Andrews researchers

Fishing for prey species such as herring and anchovies should be cut in half globally to protect creatures that eat them, such as puffins, whales and penguins, according to new research from the University of St Andrews.

A team of international experts, which includes Professor Ian Boyd of the University of St Andrews Sea Mammal Research Unit, warns that the increasing use of herring and anchovies to feed farmed fish, pigs, chickens and as nutritional supplements for humans is putting wild species that rely on them at risk.

The Lenfest Forage Fish Task Force carried out the most comprehensive analysis of the science of “forage fish” populations to date.

Its report, Little Fish, Big Impact: Managing a crucial link in ocean food webs, published today, concluded that in most ecosystems at least twice as many of these species should be left in the ocean as conventional practice.

As the fish are key food sources for commercially valuable fish such as salmon, tuna, bass and cod, the task force estimated they were twice as valuable in the water as they were if they were caught.

Using modelling, they calculated that forage fish contribute £7 billion by serving as food for other commercially important fish, compared with £3.5bn they generated as direct catch.

Professor Ian Boyd, director of the Sea Mammal Research Unit said: “Our analysis found that the best way generally to ensure there’s enough food for dependent predators is to reduce fishing for their prey.

“We need to start to understand that leaving some types of fish in the water in greater numbers is not just good for ecosystems, but it is good economics too.”

The Lenfest Forage Fish Task Force, made up of 13 scientists, was established to generate advice to support better management of forage fish around the world.

It highlights that a thriving marine ecosystem relies on plenty of forage fish, which are a crucial link in the food chain.

They eat plankton and are preyed upon by animals such as penguins, whales, seals, puffins and dolphins.

However, they are also in increasing demand for use as fish meal to feed farmed fish, pigs and chickens. They are also used to produce omega 3 oils, used in food supplements for humans.

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    Keith Bennett has been Professor of Late-Quaternary Environmental Change
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    working on the spread of trees on continental scales for many years,
    with fieldwork experience across the world. He is interested in all
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    This lecture series and will be followed by a reception in room 310 of the Irvine Building.

    Timing: 3-4.30pm, Thursday 27th November 2014
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    Darwin’s On the Origin of Species has led to a theory of evolution with
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    Biography: Keith Bennett has been Professor of Late-Quaternary Environmental Change
    at Queen’s University Belfast since 2007, following eight years as
    Professor of Quaternary Geology at Uppsala University. He has been
    working on the spread of trees on continental scales for many years,
    with fieldwork experience across the world. He is interested in all
    aspects of the interplay of evolutionary and ecological factors in
    controlling the distribution of organisms, using ancient DNA and pollen
    data. He received a Royal Society - Wolfson Research Merit Award in
    2007, and was elected Member of the Royal Irish Academy in 2011.
     


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    LINUX FOR GENOMICS COURSE
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