Female fecundity traits in wild populations of African annual fish: the role of the aridity gradient

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F16%3A00461415" target="_blank" >RIV/68081766:_____/16:00461415 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/ece3.2337" target="_blank" >http://dx.doi.org/10.1002/ece3.2337</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ece3.2337" target="_blank" >10.1002/ece3.2337</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Female fecundity traits in wild populations of African annual fish: the role of the aridity gradient

Popis výsledku v původním jazyce

The evolution of life history is shaped by life expectancy. Life-history traits coevolve, and optimal states for particular traits are constrained by trade-offs with other life-history traits. Life histories contrast among species, but may also diverge intraspecifically, at the level of populations. We studied the evolution of female reproductive allocation strategy, using natural populations of two sympatric species of African annual fishes, Nothobranchius furzeri and Nothobranchius orthonotus. These species inhabit pools in the Mozambican savanna that are formed in the rainy season and persist for only 2–10 months. Using 207 female N. furzeri from 11 populations and 243 female N. orthonotus from 14 populations, we tested the effects of genetic background (intraspecific lineage) and life expectancy (position on the aridity gradient determining maximum duration of their temporary habitat) on female fecundity traits. First, we found that variation in female body mass was small within populations, but varied considerably among populations. Second, we found that fecundity was largely defined by female body mass and that females spawned most of their eggs in the morning. Third, we found that the trade-off between egg size and egg number varied among lineages of N. furzeri and this outcome has beennconfirmed by data from two separate years. Overall, we demonstrate that localnconditions were important determinants for Nothobranchius growth and fecunditynand that eggs size in arid region was less limited by female fecundity than in humid region.

Název v anglickém jazyce

Female fecundity traits in wild populations of African annual fish: the role of the aridity gradient

Popis výsledku anglicky

The evolution of life history is shaped by life expectancy. Life-history traits coevolve, and optimal states for particular traits are constrained by trade-offs with other life-history traits. Life histories contrast among species, but may also diverge intraspecifically, at the level of populations. We studied the evolution of female reproductive allocation strategy, using natural populations of two sympatric species of African annual fishes, Nothobranchius furzeri and Nothobranchius orthonotus. These species inhabit pools in the Mozambican savanna that are formed in the rainy season and persist for only 2–10 months. Using 207 female N. furzeri from 11 populations and 243 female N. orthonotus from 14 populations, we tested the effects of genetic background (intraspecific lineage) and life expectancy (position on the aridity gradient determining maximum duration of their temporary habitat) on female fecundity traits. First, we found that variation in female body mass was small within populations, but varied considerably among populations. Second, we found that fecundity was largely defined by female body mass and that females spawned most of their eggs in the morning. Third, we found that the trade-off between egg size and egg number varied among lineages of N. furzeri and this outcome has beennconfirmed by data from two separate years. Overall, we demonstrate that localnconditions were important determinants for Nothobranchius growth and fecunditynand that eggs size in arid region was less limited by female fecundity than in humid region.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Ecology and Evolution

ISSN

2045-7758

e-ISSN

—

Svazek periodika

6

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

5921-5931

Kód UT WoS článku

000381578400029

EID výsledku v databázi Scopus

2-s2.0-84979300805