Water volume differentially modifies copepod predatory strengths on two prey types

Ross N. Cuthbert; Rotondwa Sithagu; Olaf L.F. Weyl; Ryan J. Wasserman; Jaimie T.A. Dick; Amanda Callaghan; P. William Froneman; Stefan Foord; Tatenda Dalu

doi:10.1016/j.limno.2020.125747

Water volume differentially modifies copepod predatory strengths on two prey types

Ross N. Cuthbert^*, Rotondwa Sithagu, Olaf L.F. Weyl, Ryan J. Wasserman, Jaimie T.A. Dick, Amanda Callaghan, P. William Froneman, Stefan Foord, Tatenda Dalu

^*Corresponding author for this work

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Abstract

Predatory interaction strengths are highly context-dependent, and in temporary aquatic ecosystems, may be affected by water volume changes. We examine the influence of water volume on Lovenula raynerae (Copepoda) functional responses towards two temporary pond prey types. Daphnia prey risk was not affected by increasing water volume, whereas for Culex prey risk was reduced. Accordingly, water volume changes through the hydroperiod may have species-specific effects on prey, with implications for population persistence under environmental change.

Original language	English
Article number	125747
Journal	Limnologica
Volume	81
Early online date	10 Jan 2020
DOIs	https://doi.org/10.1016/j.limno.2020.125747
Publication status	Published - Mar 2020

Bibliographical note

Funding Information:
This study was funded by the Department for the Economy, Northern Ireland . We thank Choice Maluleke and Consol Kubayi for assisting with fieldwork and experiments. We extend gratitude to Rhodes University for the provision of laboratory facilities. We acknowledge use of infrastructure and equipment provided by the South African Institute for Aquatic Biodiversity (SAIAB) Research Platform and the funding channelled through the National Research Foundation – SAIAB Institutional Support system . This study was partly funded by the National Research Foundation – South African Research Chairs Initiative of the Department of Science and Technology (Inland Fisheries and Freshwater Ecology , Grant No. 110507 ) and National Research Foundation Thuthuka Grant (No. 117700 ).

Publisher Copyright:
© 2020 Elsevier GmbH

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

Copepod
Culicid
Daphnid
Functional response
Interaction strength
Search area

ASJC Scopus subject areas

Aquatic Science

Access to Document

10.1016/j.limno.2020.125747Licence: Unspecified

Water volume differentially modifies copepod predatory strengths on two prey typesAccepted author manuscript, 581 KBLicence: CC BY-NC-ND

Cite this

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title = "Water volume differentially modifies copepod predatory strengths on two prey types",

abstract = "Predatory interaction strengths are highly context-dependent, and in temporary aquatic ecosystems, may be affected by water volume changes. We examine the influence of water volume on Lovenula raynerae (Copepoda) functional responses towards two temporary pond prey types. Daphnia prey risk was not affected by increasing water volume, whereas for Culex prey risk was reduced. Accordingly, water volume changes through the hydroperiod may have species-specific effects on prey, with implications for population persistence under environmental change.",

keywords = "Copepod, Culicid, Daphnid, Functional response, Interaction strength, Search area",

author = "Cuthbert, {Ross N.} and Rotondwa Sithagu and Weyl, {Olaf L.F.} and Wasserman, {Ryan J.} and Dick, {Jaimie T.A.} and Amanda Callaghan and Froneman, {P. William} and Stefan Foord and Tatenda Dalu",

note = "Funding Information: This study was funded by the Department for the Economy, Northern Ireland . We thank Choice Maluleke and Consol Kubayi for assisting with fieldwork and experiments. We extend gratitude to Rhodes University for the provision of laboratory facilities. We acknowledge use of infrastructure and equipment provided by the South African Institute for Aquatic Biodiversity (SAIAB) Research Platform and the funding channelled through the National Research Foundation – SAIAB Institutional Support system . This study was partly funded by the National Research Foundation – South African Research Chairs Initiative of the Department of Science and Technology (Inland Fisheries and Freshwater Ecology , Grant No. 110507 ) and National Research Foundation Thuthuka Grant (No. 117700 ). Publisher Copyright: {\textcopyright} 2020 Elsevier GmbH Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

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doi = "10.1016/j.limno.2020.125747",

language = "English",

volume = "81",

journal = "Limnologica",

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T1 - Water volume differentially modifies copepod predatory strengths on two prey types

AU - Cuthbert, Ross N.

AU - Sithagu, Rotondwa

AU - Weyl, Olaf L.F.

AU - Wasserman, Ryan J.

AU - Dick, Jaimie T.A.

AU - Callaghan, Amanda

AU - Froneman, P. William

AU - Foord, Stefan

AU - Dalu, Tatenda

N1 - Funding Information: This study was funded by the Department for the Economy, Northern Ireland . We thank Choice Maluleke and Consol Kubayi for assisting with fieldwork and experiments. We extend gratitude to Rhodes University for the provision of laboratory facilities. We acknowledge use of infrastructure and equipment provided by the South African Institute for Aquatic Biodiversity (SAIAB) Research Platform and the funding channelled through the National Research Foundation – SAIAB Institutional Support system . This study was partly funded by the National Research Foundation – South African Research Chairs Initiative of the Department of Science and Technology (Inland Fisheries and Freshwater Ecology , Grant No. 110507 ) and National Research Foundation Thuthuka Grant (No. 117700 ). Publisher Copyright: © 2020 Elsevier GmbH Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/3

Y1 - 2020/3

N2 - Predatory interaction strengths are highly context-dependent, and in temporary aquatic ecosystems, may be affected by water volume changes. We examine the influence of water volume on Lovenula raynerae (Copepoda) functional responses towards two temporary pond prey types. Daphnia prey risk was not affected by increasing water volume, whereas for Culex prey risk was reduced. Accordingly, water volume changes through the hydroperiod may have species-specific effects on prey, with implications for population persistence under environmental change.

AB - Predatory interaction strengths are highly context-dependent, and in temporary aquatic ecosystems, may be affected by water volume changes. We examine the influence of water volume on Lovenula raynerae (Copepoda) functional responses towards two temporary pond prey types. Daphnia prey risk was not affected by increasing water volume, whereas for Culex prey risk was reduced. Accordingly, water volume changes through the hydroperiod may have species-specific effects on prey, with implications for population persistence under environmental change.

KW - Copepod

KW - Culicid

KW - Daphnid

KW - Functional response

KW - Interaction strength

KW - Search area

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VL - 81

JO - Limnologica

JF - Limnologica

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ER -

Water volume differentially modifies copepod predatory strengths on two prey types

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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Cite this