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Improving anti‐predator responses of hatchery reared salmonids by social learning

Identifieur interne : 007F48 ( Main/Exploration ); précédent : 007F47; suivant : 007F49

Improving anti‐predator responses of hatchery reared salmonids by social learning

Auteurs : H. Hirvonen [Finlande] ; S. Vilhunen [Finlande] ; C. Brown [Royaume-Uni] ; V. Lintunen [Finlande] ; K. N. Laland [Royaume-Uni]

Source :

RBID : ISTEX:401C4B8DF2888FEA992CC0F34A67EC9209A8D73D

Descripteurs français

English descriptors

Abstract

Predation shortly after release is the main source of mortality among hatchery‐reared fish used to restore or enhance endangered salmonid populations. We found, that hatchery‐reared salmonid young originating from endangered stocks have weak innate responses to their natural fish predators. The ability to avoid predation in fish can be improved through social learning from experienced to naïve individuals. Huge benefits would be achieved, if social learning processes could be successfully applied on a large scale to enhance viability of hatchery fish prior to release into the wild. By using model predators together with chemical cues from real predators we tested if social learning could be used to train hatchery‐reared salmonid young to avoid fish predators. As there are clear differences in social behaviour among the salmonid species, we first examined whether these differences affect the probability and efficiency of learning anti‐predator skills from trained demonstrators. We compared anti‐predator responses of observers (fish trained by using experienced fish as demonstrators) with those of control fish, which had been ‘trained’ by untrained naïve conspecifics. We also examined how the efficiency of social learning depends on the ratio of experienced to naïve fish involved in social transmission trials. The results of these experiments will give guidelines how social learning could be utilized in developing hatchery scale training protocols.

Url:
DOI: 10.1111/j.1095-8649.2003.0216n.x


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Le document en format XML

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<term>Hatchery fish</term>
<term>Helsinki</term>
<term>Homing behaviour</term>
<term>Honest signal</term>
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<term>Individual differences</term>
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<term>Juvenile sticklebacks</term>
<term>Karlskrona archipelago</term>
<term>Knipowitschia panizzae</term>
<term>Kyoto japan</term>
<term>Kyoto university</term>
<term>Laboratory experiments</term>
<term>Laboratory studies</term>
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<term>Larger males</term>
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<term>Late afternoon</term>
<term>Leeds</term>
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<term>Louis compton miall building</term>
<term>Lowestoft</term>
<term>Lowestoft laboratory</term>
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<term>Male mating success</term>
<term>Male sticklebacks</term>
<term>Marine biology</term>
<term>Marine ecology</term>
<term>Marine science</term>
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<term>Mating success</term>
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<term>Model system</term>
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<term>Mussel</term>
<term>Natural populations</term>
<term>Natural resources</term>
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<term>Nemachilus angorae</term>
<term>Nest opening</term>
<term>Network theory</term>
<term>Nocturnal foraging excursions</term>
<term>Normal distribution model</term>
<term>Normal stickleback males</term>
<term>Norwich</term>
<term>Nova scotia</term>
<term>Olfactory</term>
<term>Olfactory cues</term>
<term>Olfactory sensitivity</term>
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<term>Other guppies</term>
<term>Other hand</term>
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<term>Oviposition choices</term>
<term>Oviposition decisions</term>
<term>Oxygen levels</term>
<term>Pakefield road</term>
<term>Paper abstracts</term>
<term>Parablennius tentacularis</term>
<term>Paralichthys olivaceus</term>
<term>Parasite</term>
<term>Parasitic</term>
<term>Park place</term>
<term>Parr</term>
<term>Physiological condition</term>
<term>Piscivorous barbus</term>
<term>Plaice</term>
<term>Poecilia reticulata</term>
<term>Pool habitat</term>
<term>Population biology</term>
<term>Population densities</term>
<term>Population differences</term>
<term>Population dynamics</term>
<term>Population structure</term>
<term>Predation</term>
<term>Predator</term>
<term>Predator attack</term>
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<term>Present study</term>
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<term>Results show</term>
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<term>River discharge</term>
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<term>Salmo trutta</term>
<term>Salmon</term>
<term>Salmon parr</term>
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<term>Same time</term>
<term>Secondary males</term>
<term>Several species</term>
<term>Sexual selection</term>
<term>Shallow waters</term>
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<term>Shoaling</term>
<term>Shoaling behaviour</term>
<term>Shoaling tendency</term>
<term>Significant differences</term>
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<term>Small groups</term>
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<term>Species ranges</term>
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<term>Sperm cloud</term>
<term>Sperm competition</term>
<term>Sperm competition dynamics</term>
<term>Sperm expenditure</term>
<term>Sponge substrata</term>
<term>Stickleback</term>
<term>Stickleback gasterosteus aculeatus</term>
<term>Stream transport</term>
<term>Substrate embeddedness</term>
<term>Succursale centre ville</term>
<term>Testis</term>
<term>Tidal</term>
<term>Tidal streams</term>
<term>Trait</term>
<term>Transport mechanism</term>
<term>Trout</term>
<term>Turbot</term>
<term>Unfamiliar fish</term>
<term>Unfamiliar groups</term>
<term>Unknown individuals</term>
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<term>Vertebrate models</term>
<term>Vertebrate zoology</term>
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<term>Visual isolation</term>
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<term>Wales aberystwyth</term>
<term>Water flow rate</term>
<term>Water temperature</term>
<term>Water velocity</term>
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<term>Yellowfin shiner</term>
<term>Yugoslav part</term>
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<term>Aquiculture</term>
<term>Biologie</term>
<term>écologie</term>
<term>Poisson</term>
<term>Ressource alimentaire</term>
<term>Eau douce</term>
<term>Habitat</term>
<term>Ressource naturelle</term>
<term>Dynamique de la population</term>
<term>Comportement social</term>
<term>Zoologie</term>
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<front>
<div type="abstract" xml:lang="en">Predation shortly after release is the main source of mortality among hatchery‐reared fish used to restore or enhance endangered salmonid populations. We found, that hatchery‐reared salmonid young originating from endangered stocks have weak innate responses to their natural fish predators. The ability to avoid predation in fish can be improved through social learning from experienced to naïve individuals. Huge benefits would be achieved, if social learning processes could be successfully applied on a large scale to enhance viability of hatchery fish prior to release into the wild. By using model predators together with chemical cues from real predators we tested if social learning could be used to train hatchery‐reared salmonid young to avoid fish predators. As there are clear differences in social behaviour among the salmonid species, we first examined whether these differences affect the probability and efficiency of learning anti‐predator skills from trained demonstrators. We compared anti‐predator responses of observers (fish trained by using experienced fish as demonstrators) with those of control fish, which had been ‘trained’ by untrained naïve conspecifics. We also examined how the efficiency of social learning depends on the ratio of experienced to naïve fish involved in social transmission trials. The results of these experiments will give guidelines how social learning could be utilized in developing hatchery scale training protocols.</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>Finlande</li>
<li>Royaume-Uni</li>
</country>
<region>
<li>Uusimaa</li>
<li>Écosse</li>
</region>
<settlement>
<li>Helsinki</li>
<li>Édimbourg</li>
</settlement>
<orgName>
<li>Université d'Helsinki</li>
<li>Université d'Édimbourg</li>
</orgName>
</list>
<tree>
<country name="Finlande">
<region name="Uusimaa">
<name sortKey="Hirvonen, H" sort="Hirvonen, H" uniqKey="Hirvonen H" first="H." last="Hirvonen">H. Hirvonen</name>
</region>
<name sortKey="Lintunen, V" sort="Lintunen, V" uniqKey="Lintunen V" first="V." last="Lintunen">V. Lintunen</name>
<name sortKey="Vilhunen, S" sort="Vilhunen, S" uniqKey="Vilhunen S" first="S." last="Vilhunen">S. Vilhunen</name>
</country>
<country name="Royaume-Uni">
<region name="Écosse">
<name sortKey="Brown, C" sort="Brown, C" uniqKey="Brown C" first="C." last="Brown">C. Brown</name>
</region>
<name sortKey="Laland, K N" sort="Laland, K N" uniqKey="Laland K" first="K. N." last="Laland">K. N. Laland</name>
</country>
</tree>
</affiliations>
</record>

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