Research Article: Growth responses of carnivorous fish species under the chronic stress of water-borne copper
محل انتشار: مجله علوم شیلات ایران، دوره: 20، شماره: 3
سال انتشار: 1400
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 189
فایل این مقاله در 16 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JIFRO-20-3_013
تاریخ نمایه سازی: 23 بهمن 1400
چکیده مقاله:
This study aimed to investigate the growth performance of three length groups (۵۰, ۱۰۰ and ۱۵۰mm) of carnivorous fish species, Channa marulius and Mystus seenghala, under sub-lethal (۱/۳rd of LC۵۰) exposure of water-borne copper, in terms of increase/decrease in average wet weights (g) and total lengths (mm), condition factor, feed intake (g) and feed conversion efficiency (%). A group of ۱۰ fish of each species and length group, with three replications, was separately exposed to water-borne copper, for ۱۲۰ days, at constant conditions of water temperature (۲۸°C), pH (۸) and total hardness (۲۵۰ mg L-۱). Weekly data on all growth parameters of fish were collected and analyzed statistically. Results showed that treated fish species exhibited significantly lower average wet weight and total length increments than control fish that followed the order: C. marulius>M. seenghala. Among three length groups of both fish species, ۱۵۰ mm length group exhibited significantly higher growth in terms of average wet weight and total length increments than ۱۰۰ mm and ۵۰ mm length groups suggesting that younger fish became more susceptible to copper stress hence showed lesser growth than older fish. The “K” values computed were significantly higher for treated than the control fish. Copper treated fish exhibited significantly lower feed intake than control fish. However, among three length groups of fish, order of feed intake was ۱۵۰ mm>۱۰۰ mm>۵۰ mm. C. marulius exhibited significantly higher FCE as compared to M. seenghala. Overall, it was concluded that sub-lethal copper exposure caused significant reduction in growth of carnivorous fish.
کلیدواژه ها:
نویسندگان
S. Asif
Department of Zoology, Wildlife and Fisheries, Faculty of Sciences, University of Agriculture, Faisalabad, Pakistan
M. Javed
Department of Zoology, Wildlife and Fisheries, Faculty of Sciences, University of Agriculture, Faisalabad, Pakistan
S. Abbas
Institute of Zoology, Faculty of Life Sciences, Gulab Devi Educational Complex, Lahore, Pakistan
F. Ambreen
Department of Zoology, Government College Women University, Madina Town, Faisalabad, Pakistan
S. Iqbal
Department of Zoology, Wildlife and Fisheries, Faculty of Sciences, University of Agriculture, Faisalabad, Pakistan
مراجع و منابع این مقاله:
لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :