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首页> 外文期刊>Journal of Ichthyology >Number Dynamics of Mass Ichthyoplankton Species in the Waters of Morocco
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Number Dynamics of Mass Ichthyoplankton Species in the Waters of Morocco

机译：摩洛哥水域质量ICHTHYOPLANKTONACE的数量动态

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摘要

Data on the number dynamics of the mass fish species at early developmental stages in the northern and southern regions of Morocco during 2003—2016 have been analyzed. The values of number index and absolute number of eggs and larvae of the mass fishspecies have been calculated. As a rule, the values of absolute number of ichthyoplankton are 1.3—2.9 times higher than of the number index values. In general, the trends of interannual fluctuations of these values are similar. The study revealed thatthe patterns of fluctuations of the subtropical fish species at early developmental stages (European pilchard Sardina pilchardus, Atlantic horse mackerel Trachurus trachurus, and mackerel Scomber japonicus colias) are similar over the whole study area within the Morocco economic zone (32°—21° N). The fluctuations in the number of the tropical fish eggs and larvae (round sardinella Sardinella aurita and Cunene horse mackerel T. trecae) are not identical in the northern and southern parts of Morocco. No clear correlation between these fluctuations in the bordering regions is revealed.
机译：2003 - 2016年摩洛哥北部和南部南部初发育阶段的大规模鱼类数量数据的数据已经分析。已经计算了数量鱼类特性的数量指数和绝对数量的卵和幼虫的值。通常，ICHThyoplankton绝对数量的值比数字指数值高1.3-2.9倍。通常，这些值的续际波动的趋势是相似的。该研究表明，早期发育阶段的亚热带鱼类（欧洲Pillchard Sardina Pillardus，Atlantic Horse Mackerel Trachurus Trachurus）的波动模式在摩洛哥经济区的整个研究区（32° - 21°N）。摩洛哥北部和南部地区的热带鱼卵和幼虫（圆形撒丁岛Sardinella Aurita和Cunene Horse Mackerel T. Trecae）的波动在摩洛哥的北部和南部地区不相同。揭示了边界区域中这些波动之间的明显相关性。

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