Proceedings of The 6th International Conference on Modern Approaches in Science, Technology & Engineering
Year: 2020
DOI:
The first study of the age of the fan mussel Pinna Nobilis with sclerochronology method in the western Algerian coast
Fatima Zohra Belkhamssa
ABSTRACT:
Coastal ecosystems are threatened by human effects and are degraded by and being degraded by human activities. Benthic, slow-growing, and long-lived species are extremely vulnerable to these impacts, such as Pinna Nobilis, so we need to protect it. Our research studies the structure and age of Pinna Nobilis populations along the western Algerian coastline. During 2015 to 2018 a total of numerous strip transects were conducted by scuba diving in the west coast of Algeria. Samples were conducted in different areas with densities ranging from 0 to 0.28 ind/100 m2. The absolute growth was asymptotic, after a sclerochronological study it was detected the age with a maximum of 22 years and length of 60.5 cm. statistics have not shown any difference between populations in terms of geographical localization or with respect to medium type. In addition, it seems that the morphometry and structure characterization of the fan shell primarily depends on environmental conditions.
Keywords: Pinna Nobilis, Bivalve, growth, new experience, Algerian coast.