Scholarlink

<p>Shrimp is one of Egypt’s most widely consumed and economically valuable seafoods; however, it is vulnerable to various microorganisms. This study identifies the bacterial and yeast communities associated with wild and farmed Penaeidae shrimp from El-Deeba Triangle (Lake Manzala) along Egypt’s Mediterranean coast. Seasonal samples (2022–2023) of shrimp and surrounding water were collected from three sites in triplicate and processed for microbial isolation using baiting and direct plating on multiple culture media. Isolates were identified based on macro- and microscopic morphology and further confirmed using the VITEK® 2 system. A total of eight bacterial and eight yeast isolates were recovered and characterized. Bacteria included both Gram-positive and Gram-negative species, comprising shrimp pathogens with antibiotic tolerance (<i>Staphylococcus equorum</i>, <i>Pseudomonas putida</i>, and <i>Aeromonas salmonicida</i>), opportunistic pathogens (<i>Acinetobacter lwoffii</i> and <i>Acinetobacter baumannii</i>), and potential probiotics (<i>Bacillus clausii</i> and <i>Bacillus amyloliquefaciens</i>). Yeast isolates ranged from harmful opportunistic pathogens (<i>Candida tropicalis</i> and <i>Candida parapsilosis</i>), to less virulent pathogens (<i>Cryptococcus laurentii</i> and <i>Cryptococcus uniguttulatus</i>), and nonpathogenic environmental yeasts (<i>Hortaea werneckii</i> and <i>Knufia mediterranea</i>). Marked site‐specific variation in microbial abundance and diversity was observed (<i>p</i> &lt; 0.05), reflecting local environmental and aquaculture conditions. Bacterial isolates were most prevalent in summer and at farm sites, whearas yeasts predominated in spring and were more common at the Lake site. This study provides the first combined characterization of bacterial and yeast flora associated with Penaeidae shrimp from wild and farmed habitats of the Egyptian Mediterranean coast, contributing to a broader understanding of shrimp-associated microbiota relevant to aquaculture health management.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Exploring the Microbial Flora Associated with Penaeidae Shrimp Habitats Along the Northeastern Mediterranean Coast of Egypt

  • 期刊论文

  • 发表日期：

    2026年3月31日

查看全文
  • Hoda M. El-Gharabawy,
  • Wael S. El‑Tohamy,
  • Asmaa H. Elgetany,
  • Wafaa E. Ragab

摘要

Shrimp is one of Egypt’s most widely consumed and economically valuable seafoods; however, it is vulnerable to various microorganisms. This study identifies the bacterial and yeast communities associated with wild and farmed Penaeidae shrimp from El-Deeba Triangle (Lake Manzala) along Egypt’s Mediterranean coast. Seasonal samples (2022–2023) of shrimp and surrounding water were collected from three sites in triplicate and processed for microbial isolation using baiting and direct plating on multiple culture media. Isolates were identified based on macro- and microscopic morphology and further confirmed using the VITEK® 2 system. A total of eight bacterial and eight yeast isolates were recovered and characterized. Bacteria included both Gram-positive and Gram-negative species, comprising shrimp pathogens with antibiotic tolerance (Staphylococcus equorum, Pseudomonas putida, and Aeromonas salmonicida), opportunistic pathogens (Acinetobacter lwoffii and Acinetobacter baumannii), and potential probiotics (Bacillus clausii and Bacillus amyloliquefaciens). Yeast isolates ranged from harmful opportunistic pathogens (Candida tropicalis and Candida parapsilosis), to less virulent pathogens (Cryptococcus laurentii and Cryptococcus uniguttulatus), and nonpathogenic environmental yeasts (Hortaea werneckii and Knufia mediterranea). Marked site‐specific variation in microbial abundance and diversity was observed (p < 0.05), reflecting local environmental and aquaculture conditions. Bacterial isolates were most prevalent in summer and at farm sites, whearas yeasts predominated in spring and were more common at the Lake site. This study provides the first combined characterization of bacterial and yeast flora associated with Penaeidae shrimp from wild and farmed habitats of the Egyptian Mediterranean coast, contributing to a broader understanding of shrimp-associated microbiota relevant to aquaculture health management.