Experimental manipulation of body size alters life history in hydra.
Ageing
allometric scaling
development
growth
life history trade-offs
longevity
phenotypic engineering
physiological regulation
reproductive allocation
sexual maturity
Journal
Ecology letters
ISSN: 1461-0248
Titre abrégé: Ecol Lett
Pays: England
ID NLM: 101121949
Informations de publication
Date de publication:
Apr 2021
Apr 2021
Historique:
revised:
18
12
2020
received:
30
07
2020
accepted:
07
01
2021
pubmed:
20
2
2021
medline:
19
3
2021
entrez:
19
2
2021
Statut:
ppublish
Résumé
Body size has fundamental impacts on animal ecology and physiology but has been strongly influenced by recent climate change and human activities, such as size-selective harvesting. Understanding the ecological and life history consequences of body size has proved difficult due to the inseparability of direct effects of body size from processes connected to it (such as growth rate and individual condition). Here, we used the cnidarian Hydra oligactis to directly manipulate body size and understand its causal effects on reproduction and senescence. We found that experimentally reducing size delayed sexual development and lowered fecundity, while post-reproductive survival increased, implying that smaller individuals can physiologically detect their reduced size and adjust life history decisions to achieve higher survival. Our experiment suggests that ecological or human-induced changes in body size will have immediate effects on life history and population dynamics through a growth-independent link between body size, reproduction and senescence.
Types de publication
Letter
Langues
eng
Sous-ensembles de citation
IM
Pagination
728-738Subventions
Organisme : Ministry for Innovation and Technology in Hungary
ID : Thematic Excellence Programme (TKP2020-IKA-04)
Organisme : Hungarian Ministry of Innovation and Technology, New National Excellence Program
ID : ÚNKP-19-4-DE-118
Organisme : Magyar Tudományos Akadémia
ID : János Bolyai Research Scholaship
Organisme : Hungarian State and European Union
ID : EFOP-3.6.1
Organisme : Hungarian National Research, Development and Innovation Office
ID : NKFIH FK124164
Informations de copyright
© 2021 The Authors. Ecology Letters published by John Wiley & Sons Ltd.
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