Modeling pre-spawning fitness and optimal climate of spotted snakeheadChanna punctata(Bloch, 1793) from a Gangetic floodplain wetland of West Bengal, India

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F20%3A43901869" target="_blank" >RIV/60076658:12520/20:43901869 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s00484-020-01976-z" target="_blank" >https://doi.org/10.1007/s00484-020-01976-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00484-020-01976-z" target="_blank" >10.1007/s00484-020-01976-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Modeling pre-spawning fitness and optimal climate of spotted snakeheadChanna punctata(Bloch, 1793) from a Gangetic floodplain wetland of West Bengal, India

Popis výsledku v původním jazyce

The spawning and well-being of fish in an ecosystem are closely linked to climatic cues, viz., temperature and rainfall. Reduced fitness can affect the reproductive performance and lead to skipped spawning. Benchmarking the threshold fitness required for a fish population to achieve readiness for spawning, and understanding how climatic parameters influence the fitness will aid in predicting the fate of its reproductive success in future climatic conditions. This study determined the threshold condition factor pre-spawning fitness (K-spawn50) at which 50% of the femaleChanna punctatapopulation can be deemed fit for spawning. The optimal climate within which pre-spawning fitness is attained by this species under Indian climatic conditions was also identified. The study was conducted from June 2015 to September 2016, covering two spawning seasons (June-August) in a Gangetic floodplain wetland of West Bengal, India. The non-parametric Kaplan-Meier method (survival fit) was used for estimation of pre-spawning fitness. &quot;Ready to spawn&quot; females were classified based on binary coding of the gonadal maturity stages. The thermal and precipitation range within which spawning fitness is achieved was identified by using the locally weighted smoothing technique. FemaleC. punctatapre-spawning fitness (K-spawn50) ranged from 1.26 to 1.39 with an estimated median of 1.29 units. Temperatures between 29 and 32 degrees C and rainfall above 100 mm were conducive to attaining the requisite pre-spawning fitness inC. punctata. This is the first study benchmarking the pre-spawning fitness and optimal climate forC. punctata. Understanding spawning requirements can inform the climate change-induced impacts on reproductive plasticity and evolutionary adaptations of snakeheads in the Ganga river basin.

Název v anglickém jazyce

Modeling pre-spawning fitness and optimal climate of spotted snakeheadChanna punctata(Bloch, 1793) from a Gangetic floodplain wetland of West Bengal, India

Popis výsledku anglicky

The spawning and well-being of fish in an ecosystem are closely linked to climatic cues, viz., temperature and rainfall. Reduced fitness can affect the reproductive performance and lead to skipped spawning. Benchmarking the threshold fitness required for a fish population to achieve readiness for spawning, and understanding how climatic parameters influence the fitness will aid in predicting the fate of its reproductive success in future climatic conditions. This study determined the threshold condition factor pre-spawning fitness (K-spawn50) at which 50% of the femaleChanna punctatapopulation can be deemed fit for spawning. The optimal climate within which pre-spawning fitness is attained by this species under Indian climatic conditions was also identified. The study was conducted from June 2015 to September 2016, covering two spawning seasons (June-August) in a Gangetic floodplain wetland of West Bengal, India. The non-parametric Kaplan-Meier method (survival fit) was used for estimation of pre-spawning fitness. &quot;Ready to spawn&quot; females were classified based on binary coding of the gonadal maturity stages. The thermal and precipitation range within which spawning fitness is achieved was identified by using the locally weighted smoothing technique. FemaleC. punctatapre-spawning fitness (K-spawn50) ranged from 1.26 to 1.39 with an estimated median of 1.29 units. Temperatures between 29 and 32 degrees C and rainfall above 100 mm were conducive to attaining the requisite pre-spawning fitness inC. punctata. This is the first study benchmarking the pre-spawning fitness and optimal climate forC. punctata. Understanding spawning requirements can inform the climate change-induced impacts on reproductive plasticity and evolutionary adaptations of snakeheads in the Ganga river basin.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40103 - Fishery

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

International Journal of Biometeorology

ISSN

0020-7128

e-ISSN

—

Svazek periodika

64

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

1889-1898

Kód UT WoS článku

000567642700001

EID výsledku v databázi Scopus

2-s2.0-85090436680