Novel hatching cue in the neotropical damselfly Megaloprepus caerulatus: larval adaptation and maternal constraint
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F23%3A00577917" target="_blank" >RIV/60077344:_____/23:00577917 - isvavai.cz</a>
Result on the web
<a href="https://worlddragonfly.org/wp-content/uploads/ijo/tijo20.v026/tijo20.v026.a18_VantHof_Fincke/tijo20.v026.a18_VantHof_Fincke.pdf" target="_blank" >https://worlddragonfly.org/wp-content/uploads/ijo/tijo20.v026/tijo20.v026.a18_VantHof_Fincke/tijo20.v026.a18_VantHof_Fincke.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.48156/1388.2023.1917223" target="_blank" >10.48156/1388.2023.1917223</a>
Alternative languages
Result language
angličtina
Original language name
Novel hatching cue in the neotropical damselfly Megaloprepus caerulatus: larval adaptation and maternal constraint
Original language description
The evolution of sibling cannibalism as a maternal strategy is particularly challenging to explain when nurseries are shared among multiple females. Such is the case for the damselfly, Megaloprepus caerulatus, whose females lay eggs in bark above the water line in large, water-filled tree holes. Asynchronous egg hatching appears to be a maternal bet-hedging strategy to increase the chances that cannibalistic offspring hatch during windows of opportunity, which occur after the remaining large larvae emerge, having eaten all others. We investigated the proximate causes of asynchronous hatching. By monitoring the pattern of egg hatching under ambient temperature in an insectary, we found that egg hatching co-occurred with lower ambient temperatures, which decreased with increasing rainfall. Treating fully developed eggs to a lower temperature for two hours triggered increased hatching relative to controls at ambient temperature. Dissection of control clutches indicated that embryonic development of siblings was asynchronous. Results suggested that the hatching trigger is adaptive. Rainfall assures a recharge of the larval habitat with water and provides wet conditions essential for neonate mobility on bark. Only 40% of neonates in a 4-day drying treatment survived, none survived the 8- and 14-day treatments. This novel hatching trigger should increase the number of neonates entering the nursery after rains, constraining a mother’s control over the timing of egg hatch, while increasing the competition among related and unrelated offspring for limited windows of opportunity in the shared nursery.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10618 - Ecology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Odonatology
ISSN
1388-7890
e-ISSN
2159-6719
Volume of the periodical
26
Issue of the periodical within the volume
NOV 8
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
153-163
UT code for WoS article
001104183800001
EID of the result in the Scopus database
2-s2.0-85184166978