Limited scope for reproductive senescence in wild populations of a short-lived fish

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F18%3A00497010" target="_blank" >RIV/68081766:_____/18:00497010 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/18:10390425

Result on the web

<a href="http://dx.doi.org/10.1007/s00114-018-1594-5" target="_blank" >http://dx.doi.org/10.1007/s00114-018-1594-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00114-018-1594-5" target="_blank" >10.1007/s00114-018-1594-5</a>

Result language

angličtina

Original language name

Limited scope for reproductive senescence in wild populations of a short-lived fish

Original language description

Senescence in wild populations was long considered negligible but current evidence suggests that it is widespread in natural populations of mammals and birds, affecting the survival and reproductive output of older individuals. In contrast, little is known about reproductive senescence in species with asymptotic growth that can keep increasing their reproductive output as they grow older and larger. Using a cross-sectional study, we tested age-related decline in fecundity and relative allocation to reproduction in five wild populations of an annual killifish, Nothobranchius furzeri Cyprinodontiformes). We did not detect any decline in absolute female egg production over their short lifespan in the wild. Relative fecundity (egg production controlled for female body mass) tended to decrease with age. This effect was driven primarily by a single population that survived 17 weeks, almost twice as long as the median persistence of the other four study populations. There was no decrease in relative ovary mass while in males, relative testes mass actually increased with age. Intra-population variation in relative ovary mass increased in older females suggesting heterogeneity in individual trajectories of female reproductive allocation. Overall, we demonstrate that annual killifish do not experience significant age-related decline in reproductive functions during their very short lifespan in the wild despite the marked deterioration of gonad tissue detected in captivity.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10613 - Zoology

Project

<a href="/en/project/GA16-00291S" target="_blank" >GA16-00291S: Ageing in the wild: from demography to gene expression</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

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

Name of the periodical

Science of Nature

ISSN

0028-1042

e-ISSN

—

Volume of the periodical

105

Issue of the periodical within the volume

11-12

Country of publishing house

DE - GERMANY

Number of pages

8

Pages from-to

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UT code for WoS article

000451042200002

EID of the result in the Scopus database

2-s2.0-85057068902