Skip navigation
Skip navigation

Phenotype-environment correlations in a putative whitefish adaptive radiation

Harrod, Chris; Mallela, Jennie-Ann; Kahilainen, Kimmo K.

Description

1. The adaptive radiation of fishes into benthic (littoral) and pelagic (lentic) morphs in post-glacial lakes has become an important model system for speciation. Although these systems are well studied, there is little evidence of the existence of morphs that have diverged to utilize resources in the remaining principal lake habitat, the profundal zone. 2. Here, we tested phenotype-environment correlations of three whitefish (Coregonus lavaretus) morphs that have radiated into littoral,...[Show more]

dc.contributor.authorHarrod, Chris
dc.contributor.authorMallela, Jennie-Ann
dc.contributor.authorKahilainen, Kimmo K.
dc.date.accessioned2015-12-10T22:17:13Z
dc.identifier.issn0021-8790
dc.identifier.urihttp://hdl.handle.net/1885/51302
dc.description.abstract1. The adaptive radiation of fishes into benthic (littoral) and pelagic (lentic) morphs in post-glacial lakes has become an important model system for speciation. Although these systems are well studied, there is little evidence of the existence of morphs that have diverged to utilize resources in the remaining principal lake habitat, the profundal zone. 2. Here, we tested phenotype-environment correlations of three whitefish (Coregonus lavaretus) morphs that have radiated into littoral, pelagic and profundal niches in northern Scandinavian lakes. We hypothesized that morphs in such trimorphic systems would have a morphology adapted to one of the principal lake habitats (littoral, pelagic or profundal niches). Most whitefish populations in the study area are formed by a single (monomorphic) whitefish morph, and we further hypothesized that these populations should display intermediate morphotypes and niche utilization. We used a combination of traditional (stomach content, habitat use, gill raker counts) and more recently developed (stable isotopes, geometric morphometrics) techniques to evaluate phenotype-environment correlations in two lakes with trimorphic and two lakes with monomorphic whitefish. 3. Distinct phenotype-environment correlations were evident for each principal niche in whitefish morphs inhabiting trimorphic lakes. Monomorphic whitefish exploited multiple habitats, had intermediate morphology, displayed increased variance in gillraker-counts, and relied significantly on zooplankton, most likely due to relaxed resource competition. 4. We suggest that the ecological processes acting in the trimorphic lakes are similar to each other, and are driving the adaptive evolution of whitefish morphs, possibly leading to the formation of new species.
dc.publisherBritish Ecological Society
dc.sourceJournal of Animal Ecology
dc.subjectKeywords: adaptive radiation; competition (ecology); divergence; ecomorphology; fish; intertidal environment; lake; lentic environment; morphometry; niche; phenotype; speciation (biology); stable isotope; zooplankton; adaptation; animal; article; body size; environ Ecological speciation; Ecomorphology; Gill rakers; Niche; Stable isotope analysis
dc.titlePhenotype-environment correlations in a putative whitefish adaptive radiation
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume79
dc.date.issued2010
local.identifier.absfor040305 - Marine Geoscience
local.identifier.absfor040501 - Biological Oceanography
local.identifier.absfor050299 - Environmental Science and Management not elsewhere classified
local.identifier.ariespublicationu4047674xPUB221
local.type.statusPublished Version
local.contributor.affiliationHarrod, Chris , Max Planck Institute for Limnology
local.contributor.affiliationMallela, Jennie-Ann, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationKahilainen, Kimmo K., University of Helsinki
local.description.embargo2037-12-31
local.bibliographicCitation.startpage1057
local.bibliographicCitation.lastpage1068
local.identifier.doi10.1111/j.1365-2656.2010.01702.x
local.identifier.absseo960399 - Climate and Climate Change not elsewhere classified
local.identifier.absseo960507 - Ecosystem Assessment and Management of Marine Environments
dc.date.updated2016-02-24T10:32:14Z
local.identifier.scopusID2-s2.0-78650040291
local.identifier.thomsonID000280671000014
CollectionsANU Research Publications

Download

File Description SizeFormat Image
01_Harrod_Phenotype-environment_2010.pdf453.64 kBAdobe PDF    Request a copy


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  20 July 2017/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator