| Titre : |
Diversité des échinodermes dans la région de Tipaza et évaluation de la qualité nutritionnelle du tégument des holothuries (Echinodermata;Holothuroidea) |
| Type de document : |
texte imprimé |
| Auteurs : |
Kenza Kadi, Auteur ; Yassamine Nedjam, Auteur ; Ihcene khoudja, Auteur |
| Editeur : |
Tipaza [Algérie] : Centre universitaire Morsli Abdellah - Tipaza- |
| Année de publication : |
2024/2025 |
| Importance : |
p.72 |
| Présentation : |
couv. en noir et blanc ., ill., fig.,tabl. |
| Format : |
30 cm |
| Accompagnement : |
CD |
| Note générale : |
Bibliographie: p57-69.
Annexes: p70-72. |
| Langues : |
Français (fre) |
| Catégories : |
Hydrobiologie
|
| Mots-clés : |
Proximate composition Nutritional quality Heavy metal content Sanitary quality. |
| Index. décimale : |
551.33 |
| Résumé : |
This study focuses on the specific diversity of echinoderms along the coastal region of Tipaza, based on sampling campaigns conducted at two representative stations: Cherchell and Tipaza. Specimens were collected at varying depths, by snorkeling in Cherchell (0–5 m) and by scuba diving in Tipaza (up to 35 m). Species identification was carried out using morphological criteria and, in the case of holothurians, ossicles analysis. A total of 15 species were recorded, belonging to four echinoderm classes: Asteroidea, Echinoidea, Ophiuroidea, and Holothuroidea. Particular attention was given to holothurians due to their nutritional and economic value. Four species (Holothuria polii, H. algeriensis, H. arguinensis, and H. sanctori) were subjected to biochemical analyses, revealing high moisture content, especially in H. sanctori (up to 91.79%). Lipid levels were low in all species (ranging from 1.22% to 1.92%), confirming their low fat content. Protein concentrations varied widely, with H. sanctori showing the highest levels (up to 18.67 mg/l), while
H. polii had the lowest (1.50 to 2.10 mg/l). Ash content was highest in H. polii (up to 15.40%) and lowest in H. sanctori (around 5.5%). In parallel, a sanitary evaluation was conducted on H. polii and H. algeriensis using atomic absorption spectrometry to detect heavy metals (Pb, Cd, Zn, Fe). Cadmium concentrations were negligible, whereas lead levels exceeded regulatory limits suggesting localized contamination. These findings highlight both the biological richness of the region and the nutritional potential of holothurians, while emphasizing the importance of environmental monitoring to ensure their sustainable and safe exploitation.
|
Diversité des échinodermes dans la région de Tipaza et évaluation de la qualité nutritionnelle du tégument des holothuries (Echinodermata;Holothuroidea) [texte imprimé] / Kenza Kadi, Auteur ; Yassamine Nedjam, Auteur ; Ihcene khoudja, Auteur . - Tipaza [Algérie] : Centre universitaire Morsli Abdellah - Tipaza-, 2024/2025 . - p.72 : couv. en noir et blanc ., ill., fig.,tabl. ; 30 cm + CD. Bibliographie: p57-69.
Annexes: p70-72. Langues : Français ( fre)
| Catégories : |
Hydrobiologie
|
| Mots-clés : |
Proximate composition Nutritional quality Heavy metal content Sanitary quality. |
| Index. décimale : |
551.33 |
| Résumé : |
This study focuses on the specific diversity of echinoderms along the coastal region of Tipaza, based on sampling campaigns conducted at two representative stations: Cherchell and Tipaza. Specimens were collected at varying depths, by snorkeling in Cherchell (0–5 m) and by scuba diving in Tipaza (up to 35 m). Species identification was carried out using morphological criteria and, in the case of holothurians, ossicles analysis. A total of 15 species were recorded, belonging to four echinoderm classes: Asteroidea, Echinoidea, Ophiuroidea, and Holothuroidea. Particular attention was given to holothurians due to their nutritional and economic value. Four species (Holothuria polii, H. algeriensis, H. arguinensis, and H. sanctori) were subjected to biochemical analyses, revealing high moisture content, especially in H. sanctori (up to 91.79%). Lipid levels were low in all species (ranging from 1.22% to 1.92%), confirming their low fat content. Protein concentrations varied widely, with H. sanctori showing the highest levels (up to 18.67 mg/l), while
H. polii had the lowest (1.50 to 2.10 mg/l). Ash content was highest in H. polii (up to 15.40%) and lowest in H. sanctori (around 5.5%). In parallel, a sanitary evaluation was conducted on H. polii and H. algeriensis using atomic absorption spectrometry to detect heavy metals (Pb, Cd, Zn, Fe). Cadmium concentrations were negligible, whereas lead levels exceeded regulatory limits suggesting localized contamination. These findings highlight both the biological richness of the region and the nutritional potential of holothurians, while emphasizing the importance of environmental monitoring to ensure their sustainable and safe exploitation.
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551.01 
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