Early life-history predator-prey reversal in two cyprinid fishes

Abstract Predator-prey relationships are often perceived simply as a situation in which a predator enhances its own fitness while reducing the fitness of its prey. However, this relationship may become reversed when the prey feeds on the juvenile predator stages. We investigated this phenomenon in a...

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Autores principales:	Marek Šmejkal, Roman Baran, Petr Blabolil, Lukáš Vejřík, Marie Prchalová, Daniel Bartoň, Tomáš Mrkvička, Jan Kubečka
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/569832d6db184e4f8e23ceb59c0952cb
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id	oai:doaj.org-article:569832d6db184e4f8e23ceb59c0952cb
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spelling	oai:doaj.org-article:569832d6db184e4f8e23ceb59c0952cb2021-12-02T15:05:59ZEarly life-history predator-prey reversal in two cyprinid fishes10.1038/s41598-017-07339-w2045-2322https://doaj.org/article/569832d6db184e4f8e23ceb59c0952cb2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07339-whttps://doaj.org/toc/2045-2322Abstract Predator-prey relationships are often perceived simply as a situation in which a predator enhances its own fitness while reducing the fitness of its prey. However, this relationship may become reversed when the prey feeds on the juvenile predator stages. We investigated this phenomenon in a model asp (Leuciscus aspius; predator)-bleak (Alburnus alburnus; prey) relationship. The adhesive asp eggs are available for bleak predation after a spawning event for only tens of seconds before they adhere to the stones, where bleak do not forage. Gut content analysis demonstrated that eggs were utilized in high quantities, especially in the spawning peak of the asp reproductive season. Furthermore, using underwater video, we recorded the bleak feeding efficiency on naturally drifting asp eggs as the percentage of eggs eaten. Within the 40 cm egg trajectory captured by our cameras, total egg mortality was 21.2 ± 2.2% on average. The highest survival chances occurred among eggs drifting in aggregations, since the short drifting distance together with their aggregated distribution satiated bleak and part of the egg aggregation could attach to the spawning ground. This study emphasizes the potential efficiency of predator egg utilization by prey, which may have further consequences in predator-prey dynamics.Marek ŠmejkalRoman BaranPetr BlabolilLukáš VejříkMarie PrchalováDaniel BartoňTomáš MrkvičkaJan KubečkaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marek Šmejkal Roman Baran Petr Blabolil Lukáš Vejřík Marie Prchalová Daniel Bartoň Tomáš Mrkvička Jan Kubečka Early life-history predator-prey reversal in two cyprinid fishes
description	Abstract Predator-prey relationships are often perceived simply as a situation in which a predator enhances its own fitness while reducing the fitness of its prey. However, this relationship may become reversed when the prey feeds on the juvenile predator stages. We investigated this phenomenon in a model asp (Leuciscus aspius; predator)-bleak (Alburnus alburnus; prey) relationship. The adhesive asp eggs are available for bleak predation after a spawning event for only tens of seconds before they adhere to the stones, where bleak do not forage. Gut content analysis demonstrated that eggs were utilized in high quantities, especially in the spawning peak of the asp reproductive season. Furthermore, using underwater video, we recorded the bleak feeding efficiency on naturally drifting asp eggs as the percentage of eggs eaten. Within the 40 cm egg trajectory captured by our cameras, total egg mortality was 21.2 ± 2.2% on average. The highest survival chances occurred among eggs drifting in aggregations, since the short drifting distance together with their aggregated distribution satiated bleak and part of the egg aggregation could attach to the spawning ground. This study emphasizes the potential efficiency of predator egg utilization by prey, which may have further consequences in predator-prey dynamics.
format	article
author	Marek Šmejkal Roman Baran Petr Blabolil Lukáš Vejřík Marie Prchalová Daniel Bartoň Tomáš Mrkvička Jan Kubečka
author_facet	Marek Šmejkal Roman Baran Petr Blabolil Lukáš Vejřík Marie Prchalová Daniel Bartoň Tomáš Mrkvička Jan Kubečka
author_sort	Marek Šmejkal
title	Early life-history predator-prey reversal in two cyprinid fishes
title_short	Early life-history predator-prey reversal in two cyprinid fishes
title_full	Early life-history predator-prey reversal in two cyprinid fishes
title_fullStr	Early life-history predator-prey reversal in two cyprinid fishes
title_full_unstemmed	Early life-history predator-prey reversal in two cyprinid fishes
title_sort	early life-history predator-prey reversal in two cyprinid fishes
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/569832d6db184e4f8e23ceb59c0952cb
work_keys_str_mv	AT mareksmejkal earlylifehistorypredatorpreyreversalintwocyprinidfishes AT romanbaran earlylifehistorypredatorpreyreversalintwocyprinidfishes AT petrblabolil earlylifehistorypredatorpreyreversalintwocyprinidfishes AT lukasvejrik earlylifehistorypredatorpreyreversalintwocyprinidfishes AT marieprchalova earlylifehistorypredatorpreyreversalintwocyprinidfishes AT danielbarton earlylifehistorypredatorpreyreversalintwocyprinidfishes AT tomasmrkvicka earlylifehistorypredatorpreyreversalintwocyprinidfishes AT jankubecka earlylifehistorypredatorpreyreversalintwocyprinidfishes
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Early life-history predator-prey reversal in two cyprinid fishes

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