Influence of food availability, predation risk and initial body size on growth and maturation of Cloeon dipterum (Ephemeroptera: Baetidae)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F16%3A00506400" target="_blank" >RIV/60077344:_____/16:00506400 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.11646/zoosymposia.11.1.9" target="_blank" >http://dx.doi.org/10.11646/zoosymposia.11.1.9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.11646/zoosymposia.11.1.9" target="_blank" >10.11646/zoosymposia.11.1.9</a>

Result language

angličtina

Original language name

Influence of food availability, predation risk and initial body size on growth and maturation of Cloeon dipterum (Ephemeroptera: Baetidae)

Original language description

Larval growth and maturation in aquatic insects are phenotypically plastic and can change in response to the amount and quality of resources, or under predation risk. While better food conditions typically lead to faster growth and earlier maturation at larger body size and hence higher fecundity, the effects of predation risk can vary depending on its strength and selectivity with respect to size or stage. Studies on lotic mayflies (Ephemeroptera) have reported two direct and two indirect life history responses to increased predation risk: slower growth rate and later maturation at the same or smaller size, and faster or unaltered growth rate and earlier maturation at smaller body size. However, life history responses of standing water mayflies to predation risk are unknown. To fill this gap, we carried out a full-factorial laboratory experiment to study the influence of food availability (full/reduced) and predation risk (present/absent predator cues) by dragonfly larvae on growth and maturation of larvae of the lentic mayfly Cloeon dipterum. Males and females responded similarly to food limitation and predation risk. Predation risk had no effect on maturation size, larval mortality and metamorphic failure. However, growth rate, number of moults and development time were all affected by predation risk, and its net effect was modified by food availability and initial body size of the larvae. These results suggest that life history responses to suboptimal conditions depend on body size at the onset of such conditions. Finally, a small group of larvae grew at much slower rates and developed much longer than other individuals of similar initial size, possibly due to bet-hedging or inclusion of multiple genotypes in the experiment.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10616 - Entomology

Project

<a href="/en/project/GA14-29857S" target="_blank" >GA14-29857S: Impact of predation risk and habitat complexity on the dynamics of macroinvertebrate community assembly in freshwater</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the Joint Meeting of the International Conference on Ephemeroptera /14./ and International Symposium on Plecoptera /18./

ISBN

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ISSN

1178-9913

e-ISSN

—

Number of pages

12

Pages from-to

53-64

Publisher name

Magnolia Press

Place of publication

Auckland

Event location

Aberdeen

Event date

May 31, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000442068700004