Modeling pre-spawning fitness and optimal climate of spotted snakeheadChanna punctata(Bloch, 1793) from a Gangetic floodplain wetland of West Bengal, India
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Modeling pre-spawning fitness and optimal climate of spotted snakeheadChanna punctata(Bloch, 1793) from a Gangetic floodplain wetland of West Bengal, India
Original language description
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. "Ready to spawn" 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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40103 - Fishery
Result continuities
Project
—
Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Biometeorology
ISSN
0020-7128
e-ISSN
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Volume of the periodical
64
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
1889-1898
UT code for WoS article
000567642700001
EID of the result in the Scopus database
2-s2.0-85090436680