濒危的 Tor putitora（汉密尔顿，1822 年）（翼手目：鲤形目：鲤科）在恒河流域至关重要的繁殖地和育苗场的身体生长和状况

Q3 Environmental Science

Journal of Threatened Taxa Pub Date : 2023-11-26 DOI:10.11609/jott.8553.15.11.24255-24260

Priyanka Rana, Prakash Nautiyal

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引用次数: 0

摘要

该研究评估了恒河山区的一个重要繁殖和育苗场--纳亚尔（Nayar）中疣蟾（Tor putitora）的体长-体重关系和相对条件因子（Kn）的季节性差异。T.putitora的生长系数在2.86至2.99之间随季节变化，而相对条件因子在1.00 ± 0.06至1.061 ± 0.3之间随季节变化。在整个研究期间，马氏鲈呈现负异速增长（季风季节除外），但条件因子较好。不同规格组的现有条件因子与过去相比有偏差，这可能是由于食物资源不足或在纳亚尔过度捕捞造成的。

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Body growth and condition of endangered Tor putitora (Hamilton, 1822) (Actinopterygii: Cypriniformes: Cyprinidae) in the crucially important breeding and nursery grounds of the Ganga stock

The study evaluates seasonal differences in length-weight relationship and relative condition factor (Kn) of Tor putitora in the Nayar, a critical breeding and nursery ground in the mountain zone of the Ganga. The growth coefficient of T. putitora varies seasonally between 2.86 and 2.99 while relative condition factor between 1.00 ± 0.06 to 1.061 ± 0.3. Mahseer shows negative allometric growth (except the monsoon season) with better condition factor throughout the study period. The present Kn factor for different size groups show deviation from past which may be due inadequate of food resources or excessive fishing in the Nayar.

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来源期刊

Journal of Threatened Taxa Environmental Science-Nature and Landscape Conservation

CiteScore

1.00

自引率

0.00%

发文量

220

审稿时长

24 weeks

期刊介绍： JoTT is a platform for quick and timely publication of research, findings, reviews and other aspects of science related to conservation and taxonomy including subject areas such as ecology, behavior, physiology, methodology, veterinary, diseases, management, models, data, among other relevant topics of conservation biology that have a direct or substantial impact on the knowledge, distribution, status, threats and conservation of native fauna, flora and fungi.