喜马拉雅生物多样性热点地区的本土鲤鱼 Bangana devdevi:繁殖生物学和激素育种为保护和促进水产养殖做出的努力

IF 0.7 4区 农林科学 Q4 FISHERIES
Yumnam Bedajit, Surajkumar Irungbam, Soibam Ngasotter, David Waikhom, Maibam Malemngamba Meitei, Sanjenbam Bidyasagar Singh, Wangkheimayum Malemnganbi Devi, Soibam Khogen Singh, Pronob Das, Soibam Basanta Singh
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引用次数: 0

摘要

通过成熟的人工繁殖技术,可以有效地保护东南亚国家流行的中型鳑鲏(Bangana devdevi)等珍贵鱼类物种。本研究旨在调查 B. devdevi 的生殖生物学,并首次将重点放在优化用于繁殖目的的激素剂量上。研究结果表明,雄鱼的生殖腺指数(GSI)在八月达到最高(1.17),而雌鱼则在七月达到最高(2.24)。雌鱼的绝对受精率为 2089 至 26287 粒卵,对应体重为 10.46 至 153.73 克。相对受精率介于 170 至 298 卵 g-1 体重之间。为了诱导繁殖,雌性育雏鱼通过三个实验组被注射了 Gonopro-FH 激素:G-FH_0.4、G-FH_0.5 和 G-FH_0.6,剂量分别为 0.4 mL、0.5 mL 和 0.6 mL-kg-1(体重)。产卵发生在施用激素后的 6-10 小时内。其中,G-FH_0.5 组的受精率(94.25%)和孵化率(89.03%)最高,明显超过 G-FH_0.4 和 G-FH_0.6 组(p < 0.05)。该研究为 B. devdevi 的繁殖生物学提供了宝贵的见解,并强调了其在制定河流和支流中该物种的管理和保护策略方面的潜在应用。此外,从诱导育种中获得的知识也为未来的大规模种子生产计划带来了希望。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Bangana devdevi, a Native Carp of the Himalayan Biodiversity Hotspot: Reproductive Biology and Hormonal Breeding Efforts for Conservation and Aquaculture Promotion

Bangana devdevi, a Native Carp of the Himalayan Biodiversity Hotspot: Reproductive Biology and Hormonal Breeding Efforts for Conservation and Aquaculture Promotion

Efficient conservation efforts for valued fish species such as Bangana devdevi, a medium-sized minor carp prevalent in Southeast Asian countries, can be facilitated through well-established artificial breeding techniques. This study aimed to investigate the reproductive biology of B. devdevi and focused on optimizing hormone dosages for breeding purposes for the first time. The research findings indicated that the highest gonadosomatic index (GSI) for males (1.17) was observed in August, while for females, it peaked in July (2.24). Female fish exhibited absolute fecundity ranging from 2089 to 26287 eggs, corresponding to body weights ranging between 10.46 and 153.73 g. The relative fecundity ranged from 170 to 298 eggs g−1 of body weight. To induce breeding, female brooders were administered Gonopro-FH hormone through three experimental groups: G-FH_0.4, G-FH_0.5, and G-FH_0.6, with doses of 0.4 mL, 0.5 mL, and 0.6 mL·kg−1 of body weight, respectively. Spawning occurred within 6–10 h after hormone administration. Among these groups, G-FH_0.5 exhibited the highest fertilization rate (94.25%) and hatching rate (89.03%), significantly surpassing the rates observed in G-FH_0.4 and G-FH_0.6 (p < 0.05). This study provided valuable insights into the reproductive biology of B. devdevi and emphasized its potential application in developing management and conservation strategies for this species in rivers and tributaries. Furthermore, the knowledge gained from induced breeding holds promise for future large-scale seed production initiatives.

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来源期刊
Journal of Applied Ichthyology
Journal of Applied Ichthyology 生物-海洋与淡水生物学
CiteScore
2.30
自引率
11.10%
发文量
73
审稿时长
3-8 weeks
期刊介绍: The Journal of Applied Ichthyology publishes articles of international repute on ichthyology, aquaculture, and marine fisheries; ichthyopathology and ichthyoimmunology; environmental toxicology using fishes as test organisms; basic research on fishery management; and aspects of integrated coastal zone management in relation to fisheries and aquaculture. Emphasis is placed on the application of scientific research findings, while special consideration is given to ichthyological problems occurring in developing countries. Article formats include original articles, review articles, short communications and technical reports.
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