Incidence and phenotypic variation in alewife alter the ontogenetic trajectory of young-of-the-year largemouth bass

Mikkel Boel, Jakob Brodersen, Anders Koed, Henrik Baktoft, David M. Post*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

There is increasing evidence that phenotypic variation can strongly impact community structure and ecosystem functions. Alewife Alosa pseudoharengus is a planktivorous fish species that strongly impact lake ecosystems. It has previously been demonstrated that phenotypic variation related to differences in life history among landlocked and anadromous alewife populations alters the strength of interactions with other species, potentially modifying its role in the community. The migration between freshwater and marine ecosystems by anadromous alewife creates seasonal differences in alewife densities, which causes lake zooplankton communities to alternate between large‐body size and higher densities in the spring, and small‐body size and low densities in the summer and fall. In lakes with resident (landlocked) alewife, predation from alewife modifies the zooplankton community to having low zooplankton densities and mainly small‐bodied zooplankton year‐round. The strong effects of phenotypic variation in alewife on zooplankton may be important for coexisting species that rely on zooplankton as a resource. Here we use estimates of growth, and direct diet and stable isotope analyses to ask if the presence‐ and phenotypic variation of alewife alters the ontogenetic trajectory of young‐of‐the‐year (YOY) largemouth bass Micropterus salmoides, which depend on zooplankton in the early life stages. We found that both the presence‐ and phenotypic variation of alewife affects growth, trophic position, and diet of largemouth bass. YOY largemouth bass from lakes without alewife grew faster, switched to piscivory earlier, and reached higher trophic positions than in alewife lakes. In lakes with landlocked alewife largemouth bass grew slower and obtained a lower trophic position than those in lakes with anadromous alewife. These divergences can be explained by the strong effects of alewife on zooplankton community structure. Our results demonstrate how the strong effects of phenotypic variation can propagate through natural food webs to influence important life history transitions in other species
Original languageEnglish
JournalOikos
Volume127
Issue number12
Pages (from-to)1800-1811
Number of pages12
ISSN0030-1299
DOIs
Publication statusPublished - 2018

Keywords

  • Diet shifts
  • Food web utilization
  • Growth
  • Niche shifts
  • Ontogeny
  • Piscivory
  • Size-structured predation
  • Stable isotopes
  • Trophic position

Cite this

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title = "Incidence and phenotypic variation in alewife alter the ontogenetic trajectory of young-of-the-year largemouth bass",
abstract = "There is increasing evidence that phenotypic variation can strongly impact community structure and ecosystem functions. Alewife Alosa pseudoharengus is a planktivorous fish species that strongly impact lake ecosystems. It has previously been demonstrated that phenotypic variation related to differences in life history among landlocked and anadromous alewife populations alters the strength of interactions with other species, potentially modifying its role in the community. The migration between freshwater and marine ecosystems by anadromous alewife creates seasonal differences in alewife densities, which causes lake zooplankton communities to alternate between large‐body size and higher densities in the spring, and small‐body size and low densities in the summer and fall. In lakes with resident (landlocked) alewife, predation from alewife modifies the zooplankton community to having low zooplankton densities and mainly small‐bodied zooplankton year‐round. The strong effects of phenotypic variation in alewife on zooplankton may be important for coexisting species that rely on zooplankton as a resource. Here we use estimates of growth, and direct diet and stable isotope analyses to ask if the presence‐ and phenotypic variation of alewife alters the ontogenetic trajectory of young‐of‐the‐year (YOY) largemouth bass Micropterus salmoides, which depend on zooplankton in the early life stages. We found that both the presence‐ and phenotypic variation of alewife affects growth, trophic position, and diet of largemouth bass. YOY largemouth bass from lakes without alewife grew faster, switched to piscivory earlier, and reached higher trophic positions than in alewife lakes. In lakes with landlocked alewife largemouth bass grew slower and obtained a lower trophic position than those in lakes with anadromous alewife. These divergences can be explained by the strong effects of alewife on zooplankton community structure. Our results demonstrate how the strong effects of phenotypic variation can propagate through natural food webs to influence important life history transitions in other species",
keywords = "Diet shifts, Food web utilization, Growth, Niche shifts, Ontogeny, Piscivory, Size-structured predation, Stable isotopes, Trophic position",
author = "Mikkel Boel and Jakob Brodersen and Anders Koed and Henrik Baktoft and Post, {David M.}",
year = "2018",
doi = "10.1111/oik.05556",
language = "English",
volume = "127",
pages = "1800--1811",
journal = "Oikos",
issn = "0030-1299",
publisher = "Wiley-Blackwell",
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}

Incidence and phenotypic variation in alewife alter the ontogenetic trajectory of young-of-the-year largemouth bass. / Boel, Mikkel; Brodersen, Jakob; Koed, Anders; Baktoft, Henrik; Post, David M.

In: Oikos, Vol. 127, No. 12, 2018, p. 1800-1811.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Incidence and phenotypic variation in alewife alter the ontogenetic trajectory of young-of-the-year largemouth bass

AU - Boel, Mikkel

AU - Brodersen, Jakob

AU - Koed, Anders

AU - Baktoft, Henrik

AU - Post, David M.

PY - 2018

Y1 - 2018

N2 - There is increasing evidence that phenotypic variation can strongly impact community structure and ecosystem functions. Alewife Alosa pseudoharengus is a planktivorous fish species that strongly impact lake ecosystems. It has previously been demonstrated that phenotypic variation related to differences in life history among landlocked and anadromous alewife populations alters the strength of interactions with other species, potentially modifying its role in the community. The migration between freshwater and marine ecosystems by anadromous alewife creates seasonal differences in alewife densities, which causes lake zooplankton communities to alternate between large‐body size and higher densities in the spring, and small‐body size and low densities in the summer and fall. In lakes with resident (landlocked) alewife, predation from alewife modifies the zooplankton community to having low zooplankton densities and mainly small‐bodied zooplankton year‐round. The strong effects of phenotypic variation in alewife on zooplankton may be important for coexisting species that rely on zooplankton as a resource. Here we use estimates of growth, and direct diet and stable isotope analyses to ask if the presence‐ and phenotypic variation of alewife alters the ontogenetic trajectory of young‐of‐the‐year (YOY) largemouth bass Micropterus salmoides, which depend on zooplankton in the early life stages. We found that both the presence‐ and phenotypic variation of alewife affects growth, trophic position, and diet of largemouth bass. YOY largemouth bass from lakes without alewife grew faster, switched to piscivory earlier, and reached higher trophic positions than in alewife lakes. In lakes with landlocked alewife largemouth bass grew slower and obtained a lower trophic position than those in lakes with anadromous alewife. These divergences can be explained by the strong effects of alewife on zooplankton community structure. Our results demonstrate how the strong effects of phenotypic variation can propagate through natural food webs to influence important life history transitions in other species

AB - There is increasing evidence that phenotypic variation can strongly impact community structure and ecosystem functions. Alewife Alosa pseudoharengus is a planktivorous fish species that strongly impact lake ecosystems. It has previously been demonstrated that phenotypic variation related to differences in life history among landlocked and anadromous alewife populations alters the strength of interactions with other species, potentially modifying its role in the community. The migration between freshwater and marine ecosystems by anadromous alewife creates seasonal differences in alewife densities, which causes lake zooplankton communities to alternate between large‐body size and higher densities in the spring, and small‐body size and low densities in the summer and fall. In lakes with resident (landlocked) alewife, predation from alewife modifies the zooplankton community to having low zooplankton densities and mainly small‐bodied zooplankton year‐round. The strong effects of phenotypic variation in alewife on zooplankton may be important for coexisting species that rely on zooplankton as a resource. Here we use estimates of growth, and direct diet and stable isotope analyses to ask if the presence‐ and phenotypic variation of alewife alters the ontogenetic trajectory of young‐of‐the‐year (YOY) largemouth bass Micropterus salmoides, which depend on zooplankton in the early life stages. We found that both the presence‐ and phenotypic variation of alewife affects growth, trophic position, and diet of largemouth bass. YOY largemouth bass from lakes without alewife grew faster, switched to piscivory earlier, and reached higher trophic positions than in alewife lakes. In lakes with landlocked alewife largemouth bass grew slower and obtained a lower trophic position than those in lakes with anadromous alewife. These divergences can be explained by the strong effects of alewife on zooplankton community structure. Our results demonstrate how the strong effects of phenotypic variation can propagate through natural food webs to influence important life history transitions in other species

KW - Diet shifts

KW - Food web utilization

KW - Growth

KW - Niche shifts

KW - Ontogeny

KW - Piscivory

KW - Size-structured predation

KW - Stable isotopes

KW - Trophic position

U2 - 10.1111/oik.05556

DO - 10.1111/oik.05556

M3 - Journal article

VL - 127

SP - 1800

EP - 1811

JO - Oikos

JF - Oikos

SN - 0030-1299

IS - 12

ER -