National Inventory and Current Status ofEchinodermata in Libyan Marine Waters

 
Abstract

Libyan extensive coastline along the southern Mediterranean Sea is characterized by diverse marine habitats and rich biodiversity. Among the key components of this ecological wealth are echinoderms, which play important roles in benthic ecosystems. This study provides the first comprehensive inventory of echinoderm species documented in Libyan waters, compiled from a range of field surveys conducted over the past several decades. A total of 48 species have been identified, spanning all five echinoderm classes: Crinoidea (1 species), Asteroidea (15 species), Ophiuroidea (12 species), Echinoidea (13 species), and Holothuroidea (7 species). Significantly, this work includes the first recorded occurrences of Ophidiaster ophidianus and Tethyaster subinermis (Asteroidea), as well as Ophiactis virens and Ophiactis macrolepidota (Ophiuroidea) in Libyan waters. These findings enhance our understanding of echinoderm biodiversity along the southern Mediterranean and establish an important baseline for future ecological and conservation efforts in the region.

Key Findings :

First Comprehensive Inventory:
The study establishes the first baseline inventory of echinoderm species documented in Libyan waters, compiling data across decades of field surveys.
Species & Class Diversity:
A total of 48 echinoderm species across all five living classes were identified:
Asteroidea (Sea stars): 15 species
Echinoidea (Sea urchins & sand dollars): 13 species
Ophiuroidea (Brittle stars): 12 species
Holothuroidea (Sea cucumbers): 7 species
Crinoidea (Feather stars): 1 species
New Geographic Records: First recorded occurrences of four species in Libyan marine waters:
Ophidiaster ophidianus and Tethyaster subinermis (Asteroidea)
Ophiactis virens and Ophiactis macrolepidota (Ophiuroidea)