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Investigating the interactions between migration ecology, local adaptation and diversification

English title Investigating the interactions between migration ecology, local adaptation and diversification
Applicant Brodersen Jakob
Number 156396
Funding scheme Project funding
Research institution Fischökologie und Evolution Eawag
Institution of higher education Swiss Federal Institute of Aquatic Science and Technology - EAWAG
Main discipline Ecology
Start/End 01.02.2015 - 31.08.2018
Approved amount 275'050.00
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All Disciplines (2)

Discipline
Ecology
Zoology

Keywords (5)

Assortative mating; Migration; Local adaptation; Alternative macrohabitats; Non-neutral gene-flow

Lay Summary (German)

Lead
Mit dem vorgelegten Projekt sollen lokale Adaptionen, die Migrationsdynamik und die Diversifizierung der Forelle in das ausgewählte Untersuchungsgebiet, d.h. Vierwaldstättersee Einzugsgebiet, untersucht werden. Insbesondere sollen die partielle Migration (nur ein Teil der Fischpopulation wandert ab) und die differentielle Migration (variable Zeit, Dauer und Ziel der Migration) von Fischen aus verschiedenen Bächen untersucht werden.
Lay summary

Wanderung ist eine fundamentale undallgegenwärtige Eigenschaft von Tieren. Im Lebenszyklus von Individuen istWanderung von wesentlicher Bedeutung für essenzielle ökologische undevolutionäre Prozesse. Das Wissen über Adaptionen von migrierenden Individuen beschränktsich hauptsächlich auf Adaptionen an die Migrationsreise per se. Um dieInteraktionen zwischen Adaption und Migration vollständig zu verstehen, müssenjedoch viele weitere Aspekte miteinbezogen werden.

Mit dem vorgelegten Projekt sollen lokaleAdaptionen, die Migrationsdynamik und die Diversifizierung der Forelle in dasausgewählte Untersuchungsgebiet, d.h. Vierwaldstättersee Einzugsgebiet, untersuchtwerden. Insbesondere sollen die partielle Migration (nur ein Teil derFischpopulation wandert ab) und die differentielle Migration (variable Zeit,Dauer und Ziel der Migration) von Fischen aus verschiedenen Bächen untersuchtwerden.

Die Studie kann einen signifikanten Beitragzum Wissen über die ökologische und evolutionäre Dynamik der Migration leistenund den längst notwendigen Einbezug der Migration in die Öko-Evolutionstheorievorantreiben. Ausserdem soll die Studie als Rahmen für die Initiierung einerquantitativen Migrationsforschung in der Schweiz dienen, welche zurzeit nochunzureichend betrieben wird. Neben dem Beitrag an die Grundlagenforschungliefert die Studie ein erweitertes Verständnis der Seeforelle, einer Art,welche in der Schweiz auf grosses Interesse und ausgeprägte Wertschätzungzählen kann. Die Untersuchung der genetischen und phänotypischen Unterschiede vonSeeforellenpopulationen, sowie einer Reihe von anderen Fischarten, ist vongrosser Bedeutung für den Artenschutz und das Management der Biodiversität inFlüssen und Seen.

Direct link to Lay Summary Last update: 30.01.2015

Responsible applicant and co-applicants

Employees

Publications

Publication
Size-dependent tradeoffs in seasonal freshwater environments facilitate differential salmonid migration
Dermond Philip, Melián Carlos J., Brodersen Jakob (2019), Size-dependent tradeoffs in seasonal freshwater environments facilitate differential salmonid migration, in Movement Ecology, 7(1), 40-40.
Heritable morphological differentiation in salmonids from two distinct stream types
Dermond Philip, Sperlich Nicola, Brodersen Jakob (2019), Heritable morphological differentiation in salmonids from two distinct stream types, in Journal of Fish Biology, 95(5), 1215-1222.

Collaboration

Group / person Country
Types of collaboration
Cantonal authorities in Cantons Luzern, Uri, Schwyz, Obwalden and Nidwalden Switzerland (Europe)
- Research Infrastructure
- Industry/business/other use-inspired collaboration

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Biology 18 Talk given at a conference Tradeoffs between predation and growth determine differential migration 15.02.2018 Neuchatel, Switzerland Brodersen Jakob; Dermond Philip;
Ecological Society of America (ESA) Annual Meeting Talk given at a conference Inter- and intra-population variation migratory timing 10.08.2017 Portland, Oregon, United States of America Dermond Philip; Brodersen Jakob;
Ecological Society of America (ESA) Annual Meeting Talk given at a conference Environmental stability increases individual specialisation in pre-alpine brown trout populations 10.08.2017 Portland, Oregon, United States of America Brodersen Jakob; Dermond Philip;
35th Swedish Oikos Society annual meeting Talk given at a conference Inter- and intra-population variation in timing of migration 08.02.2017 Lund, Sweden Brodersen Jakob; Dermond Philip;
2nd International sea trout symposium Poster Seasonal timing of juvenile brown trout migration 20.10.2016 Dundalk, Ireland McIntyre Lauren; Brodersen Jakob; Dermond Philip;
2nd International sea trout symposium Talk given at a conference Are lakeward migrations conceptually different from anadromy in trout? 20.10.2015 Dundalk, Ireland Brodersen Jakob;


Knowledge transfer events

Active participation

Title Type of contribution Date Place Persons involved
Bafu Fischereiaufsehertagung: Wasserkraft und Fische in Schweizer Fliessgewässer Talk 22.08.2018 St. Gallen, SG, Switzerland Brodersen Jakob;
Urner Fischereiverein Generalversammlung: Seeforellen Vierwaldstättersee Talk 15.11.2017 Altdorf, UR, Switzerland Brodersen Jakob;
Bafu Fischereiaufsehertagung: Seeforellen und ihre fischereiliche Nutzung Talk 15.08.2017 Andermatt, UR, Switzerland Brodersen Jakob;
Vierwaldstättersee Aufsichtskommission: Eawag Forellenmigrationsprojekt Vierwaldstättersee Talk 15.03.2017 Sursee, LU, Switzerland Brodersen Jakob;
Canton Uri: Eawag Forellenmigrationsprojekt Vierwaldstättersee Talk 15.01.2017 Altdorf, UR, Switzerland Brodersen Jakob;
Eawag Infotag: Seeforellen und ihre fischereiliche Nutzung Talk 15.09.2016 Luzern, Switzerland Brodersen Jakob;
Urner Fischereiverein Generalversammlung: Eawag Forellen Wanderung Vierwaldstättersee Talk 15.11.2015 Altdorf, Uri, Switzerland Brodersen Jakob;
Canton Nidwalden: Eawag Forellen Wanderung Vierwaldstättersee Talk 16.09.2015 Kastanienbaum, Switzerland Brodersen Jakob;
Canton Uri: Eawag Forellen Wanderung Vierwaldstättersee Talk 15.09.2015 Altdorf, Uri, Switzerland Brodersen Jakob;
Vierwaldstättersee Aufsichtskommission: Seeforelle Wanderungen VWS Talk 15.03.2015 Kastanienbaum, Switzerland Brodersen Jakob;


Associated projects

Number Title Start Funding scheme
185195 Migration and ecological divergence 01.06.2019 Project funding

Abstract

Movement is a fundamental and ubiquitous feature of animals, and the movement of individual organisms is integral for many vital ecological and evolutionary processes. Animal migration is one of nature’s most spectacular forms of animal movement and has a long and illuminating scientific history, with exciting new discoveries year after year. Centuries of research on animal migration has made it clear that migratory individuals most often show distinct adaptations to the migratory travel and benefit from temporally changing relative benefits of alternative habitats. However, being migratory also means experiencing selection pressures for adaptation to at least two different habitats often under competition with either resident individuals or migratory individuals from other populations. Unfortunately, our knowledge on adaptation to a migratory life history is typically limited to adaptation to the migratory travel per se, although knowledge about all aspects of migratory versus non-migratory life history is crucially needed in order to understand the interaction between migration and adaptation to multiple alternative macrohabitats. Specifically, divergent local adaptation in natal habitats may very well determine niche divergence in a second habitat that is shared between multiple migratory populations and may also cause non-neutral gene-flow between populations.To enable strong research on the ecological- and evolutionary aspects of animal migration, replicate study systems are needed, where individual migration can be accurately monitored together with individual performance in both habitats, and individual life time fitness variation. This is for many of the classical migration study systems unfortunately not the case, e.g. for migration of large herbivores or for most bird migrations. However, migration of trout (Salmo trutta) between streams and lakes in Switzerland offers an ideal study system with replication on individual-, and on population level. With the proposed project, I will investigate local adaptation, migratory dynamics and diversification in a Swiss stream/lake trout meta-population. The proposed study system enables me to study some of the most basic, but yet unexplored mechanisms in local adaptation, evolution of migratory forms and diversification. Specifically, I will study local adaptation to different types of stream environment, and partial- and differential migration between streams and the lake. This will be linked to niche divergence in the lake between different populations of migratory trout and to patterns straying and gene-flow between populations. These studies are facilitated not only by a unique study system, but also by existing field equipment and laboratory facilities at Eawag Centre of Ecology, Evolution and Biogeochemistry in Kastanienbaum, by my own long experience in the field and by an excellent research environment at Eawag and the University of Bern.With its integrative approach, the study will significantly contribute to our understanding of the interplay between migration, local adaptation and ecological diversification. Besides the contribution to basic research, the study will contribute to our understanding of a fish of concern and high appreciation in Switzerland, namely the lake trout, and exemplifies the need for considering genetic and phenotypic diversity in conservation, and management of biodiversity.
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