Importance of Plankton Communities for Water Quality and Nutrition in the White Shrimp (Litopenaeus vanname) Ponds | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Article 124, Volume 28, Issue 6, November 2024, Pages 2319-2337 PDF (552.85 K) | ||
| DOI: 10.21608/ejabf.2024.400598 | ||
| Author | ||
| Belal et al. | ||
| Abstract | ||
| This study investigated the dietary selectivity of the white shrimp, Litopenaeus vannamei, through analyzing the phytoplankton and zooplankton communities in both three ponds water and shrimp gut content. Results revealed significant differences in species composition between the two environments. A total of 155 phytoplankton species were identified in shrimp ponds, though their relative abundances varied spatially and temporally, impacting shrimp growth and potentially linked to mortality events associated with blooms of specific species like Cyclotella glomerata, Oscillatoria limnetica, Gomphosphaeria aponina, Nitzschia longisima, and Prorocentrum micans. Cyanophyta and diatoms (average abundance about 72 %) were the most frequent phytoplankton found within shrimp guts (Cyclotella glomerata, Cymbella sp., Navicula erifuga, Nitzschia obtusa, N. palea, Pleurosigma elongatum, Oscillatoria limnetica and Prorocentrum micans) which revealed a high PPI index value referring to high selectivity of shrimp to these species. 10 zooplankton taxa were identified with a high dominance of rotifera, representing more than 50% of the total recorded zooplankton in pond water and absence record in gut contents. These findings suggest that L. vannamei exhibits selective feeding behavior, preferentially ingesting certain diatom species. The high abundance of Cyclotella glomerata and Prorocentrum micans in both environments indicates their potential importance as food sources for the shrimp. | ||
| Keywords | ||
| White shrimp; Litopenaeus vannamei; Phytoplankton; Diatoms; Cyanophyta; Zooplankton | ||
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