Hatching date variability in wild populations of four coexisting species of African annual fishes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F17%3A00474743" target="_blank" >RIV/68081766:_____/17:00474743 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/DVDY.24500" target="_blank" >http://dx.doi.org/10.1002/DVDY.24500</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/DVDY.24500" target="_blank" >10.1002/DVDY.24500</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hatching date variability in wild populations of four coexisting species of African annual fishes

Popis výsledku v původním jazyce

Background: Hatching is modulated by a combination of intrinsic and extrinsic factors. Annual killifish are adapted to complete their entire life cycle in annually desiccating habitats. Spending most of their life in the embryonic stage, they have evolved adaptations to survive desiccated conditions and match their hatching with the unpredictable onset of the aquatic phase of the pool. We examined spatial and temporal synchrony of hatching in natural populations of four species of African annual killifish (genus Nothobranchius). We compared differences and variability in hatching dates among years, regions, pools, and species and matched them with data on inundations of individual pools. nResults: Inundations typically coincided with peak rainfall in early January. We found considerable spatial and temporal synchrony in 1 year, but less synchrony in the other 2 years. Hatching generally occurred 0–20 days after inundation, fish at most sites hatched synchronously (<1 week) but some sites showed protracted hatching or two age cohorts. One species tended to hatch earlier than the other three. nConclusions: We suggest that hatching of annual killifish in the wild is a result of the interplay between environmental conditions and individual predisposition to respond to threshold environmental cues, ensuring effective bet-hedging against unpredictable inundation.n

Název v anglickém jazyce

Hatching date variability in wild populations of four coexisting species of African annual fishes

Popis výsledku anglicky

Background: Hatching is modulated by a combination of intrinsic and extrinsic factors. Annual killifish are adapted to complete their entire life cycle in annually desiccating habitats. Spending most of their life in the embryonic stage, they have evolved adaptations to survive desiccated conditions and match their hatching with the unpredictable onset of the aquatic phase of the pool. We examined spatial and temporal synchrony of hatching in natural populations of four species of African annual killifish (genus Nothobranchius). We compared differences and variability in hatching dates among years, regions, pools, and species and matched them with data on inundations of individual pools. nResults: Inundations typically coincided with peak rainfall in early January. We found considerable spatial and temporal synchrony in 1 year, but less synchrony in the other 2 years. Hatching generally occurred 0–20 days after inundation, fish at most sites hatched synchronously (<1 week) but some sites showed protracted hatching or two age cohorts. One species tended to hatch earlier than the other three. nConclusions: We suggest that hatching of annual killifish in the wild is a result of the interplay between environmental conditions and individual predisposition to respond to threshold environmental cues, ensuring effective bet-hedging against unpredictable inundation.n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10605 - Developmental biology

Projekt

<a href="/cs/project/GA16-00291S" target="_blank" >GA16-00291S: Stárnutí v přirozených populacích: od demografie po genovou expresi</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Developmental Dynamics

ISSN

1058-8388

e-ISSN

—

Svazek periodika

246

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

827-837

Kód UT WoS článku

000413149200006

EID výsledku v databázi Scopus

2-s2.0-85018704199