Minnows may be more reproductively resilient to climatic variability than anticipated: Synthesis from a reproductive vulnerability assessment of Gangetic pool barbs (Puntius sophore)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F19%3A43899459" target="_blank" >RIV/60076658:12520/19:43899459 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1470160X19302158" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1470160X19302158</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ecolind.2019.03.037" target="_blank" >10.1016/j.ecolind.2019.03.037</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Minnows may be more reproductively resilient to climatic variability than anticipated: Synthesis from a reproductive vulnerability assessment of Gangetic pool barbs (Puntius sophore)

Popis výsledku v původním jazyce

Information on various aspects of reproductive traits of female pool barbs from various stretches of Ganga River basin, India was generated in relation to climatic variability. The presumptions surrounding - minnows being the first and easily hit by climatic variability, was validated. GAM models revealed low threshold rainfall requirement (&gt; 50 mm) within a wide temperature range (20-30 degrees C) necessary for attainment of breeding GSI (&gt; 10.5 units). Pre-spawning fitness (K-spawn50) and size at 50% maturity (L-M(50)) benchmarked through Kaplan-Meier survival estimates were in the range 1.61-1.67 units (Fulton condition factor) and 8.6-9.0 cm respectively. Mapping of climate preferendum through LOESS smoothing hinted both low-mild rainfall (50-150 mm) and high rainfall conditions (400-700 mm) conducive for attaining pre-spawning fitness while no dependence on temperature was observed. First maturity of females was encountered at 4.7 cm within the size range 4.4-12.6 cm. The present study hinted a probable reduction (1.4-1.8 cm) in size at maturity of female pool barbs. We observed pool barbs can breed within a wide thermal regime following slightest of rainfall events. Collating this with the present rates of climatic variability, we infer negligible threat of changing climate on reproduction of Puntius sophore in near future - contrary to the existing presumptions. Owing to the easiness in attainment of pre-spawning fitness under an apparently flexible climate preferendum, &apos;skipped spawning&apos; decisions while facing climatic variability also seem minimum. The recorded breeding thresholds may serve as future references while assessing climate driven changes on reproduction and evolutionary adaptations in Gangetic minnows.

Název v anglickém jazyce

Minnows may be more reproductively resilient to climatic variability than anticipated: Synthesis from a reproductive vulnerability assessment of Gangetic pool barbs (Puntius sophore)

Popis výsledku anglicky

Information on various aspects of reproductive traits of female pool barbs from various stretches of Ganga River basin, India was generated in relation to climatic variability. The presumptions surrounding - minnows being the first and easily hit by climatic variability, was validated. GAM models revealed low threshold rainfall requirement (&gt; 50 mm) within a wide temperature range (20-30 degrees C) necessary for attainment of breeding GSI (&gt; 10.5 units). Pre-spawning fitness (K-spawn50) and size at 50% maturity (L-M(50)) benchmarked through Kaplan-Meier survival estimates were in the range 1.61-1.67 units (Fulton condition factor) and 8.6-9.0 cm respectively. Mapping of climate preferendum through LOESS smoothing hinted both low-mild rainfall (50-150 mm) and high rainfall conditions (400-700 mm) conducive for attaining pre-spawning fitness while no dependence on temperature was observed. First maturity of females was encountered at 4.7 cm within the size range 4.4-12.6 cm. The present study hinted a probable reduction (1.4-1.8 cm) in size at maturity of female pool barbs. We observed pool barbs can breed within a wide thermal regime following slightest of rainfall events. Collating this with the present rates of climatic variability, we infer negligible threat of changing climate on reproduction of Puntius sophore in near future - contrary to the existing presumptions. Owing to the easiness in attainment of pre-spawning fitness under an apparently flexible climate preferendum, &apos;skipped spawning&apos; decisions while facing climatic variability also seem minimum. The recorded breeding thresholds may serve as future references while assessing climate driven changes on reproduction and evolutionary adaptations in Gangetic minnows.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40103 - Fishery

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Ecological Indicators

ISSN

1470-160X

e-ISSN

—

Svazek periodika

105

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

727-736

Kód UT WoS článku

000490574200067

EID výsledku v databázi Scopus

2-s2.0-85063540010