Reproduction of the ctenophore, Beroe ovata, in the Caspian Sea water
محل انتشار: مجله علوم شیلات ایران، دوره: 6، شماره: 2
سال انتشار: 1385
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 124
فایل این مقاله در 11 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-6-2_006
تاریخ نمایه سازی: 13 دی 1400
چکیده مقاله:
The experiments with Beroe ovata showed that this ctenophore can survive and reproduce in the Caspian Sea water, though at far lower rate than in the Black Sea; larval growth in the Caspian Sea water was also slower and mortality higher. Maximum fecundity of ۲۲۱۰ and ۲۴۰ eggs recorded in laboratories of Turkey and Iran, respectively. About ۳۴ to ۱۰۰% of eggs in the Caspian Sea water could not develop and hatch. Larvae were at different stages of development, usually with size between ۱.۲ to ۲mm. The highest number of eggs and larvae were obtained in tanks where Beroe individuals were together with Mnemiopsis leidyi. The poor reproduction of B. ovata in the Caspian Sea water could be due to both the acclimation stress to low salinity and possible damage of individuals during the transportation.
کلیدواژه ها: