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Predator biomass and vegetation influence the coastal distribution of threespine stickleback morphotypes

Yanos, Casey L. and Haanstra, Eeke P. and Carey, Fiona Colgan and Passmore, Sorsha A. and Eklof, Johan S. and Bergström, Ulf and Hansen, Joakim P. and Fontaine, Michael C. and Maan, Martine E. and Eriksson, Britas Klemens (2021). Predator biomass and vegetation influence the coastal distribution of threespine stickleback morphotypes. Ecology and Evolution. 11 , 12485-12496
[Research article]

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Abstract

Intraspecific niche differentiation can contribute to population persistence in changing environments. Following declines in large predatory fish, eutrophication, and climate change, there has been a major increase in the abundance of threespine stickleback (Gasterosteus aculeatus) in the Baltic Sea. Two morphotype groups with different levels of body armor-completely plated and incompletely plated-are common in coastal Baltic Sea habitats. The morphotypes are similar in shape, size, and other morphological characteristics and live as one apparently intermixed population. Variation in resource use between the groups could indicate a degree of niche segregation that could aid population persistence in the face of further environmental change. To assess whether morphotypes exhibit niche segregation associated with resource and/or habitat exploitation and predator avoidance, we conducted a field survey of stickleback morphotypes, and biotic and abiotic ecosystem structure, in two habitat types within shallow coastal bays in the Baltic Sea: deeper central waters and shallow near-shore waters. In the deeper waters, the proportion of completely plated stickleback was greater in habitats with greater biomass of two piscivorous fish: perch (Perca fluviatilis) and pike (Esox lucius). In the shallow waters, the proportion of completely plated stickleback was greater in habitats with greater coverage of habitat-forming vegetation. Our results suggest niche segregation between morphotypes, which may contribute to the continued success of stickleback in coastal Baltic Sea habitats.

Authors/Creators:Yanos, Casey L. and Haanstra, Eeke P. and Carey, Fiona Colgan and Passmore, Sorsha A. and Eklof, Johan S. and Bergström, Ulf and Hansen, Joakim P. and Fontaine, Michael C. and Maan, Martine E. and Eriksson, Britas Klemens
Title:Predator biomass and vegetation influence the coastal distribution of threespine stickleback morphotypes
Series Name/Journal:Ecology and Evolution
Year of publishing :2021
Volume:11
Page range:12485-12496
Number of Pages:12
Publisher:WILEY
ISSN:2045-7758
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:ecosystem perturbation, ecotypic divergence, habitat specialization, intraspecific variation, stickleback
URN:NBN:urn:nbn:se:slu:epsilon-p-113352
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113352
Additional ID:
Type of IDID
DOI10.1002/ece3.7993
Web of Science (WoS)000684158200001
ID Code:25850
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Department of Aquatic Resources
Deposited By: SLUpub Connector
Deposited On:18 Oct 2021 04:26
Metadata Last Modified:18 Oct 2021 05:01

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