Marine Biology Research 3: 468472

First record of Alicia mirabilis (Anthozoa: Actiniaria) from the Aegean Sea and density assessment with distance sampling in a site of high abundance.

 Stelios Katsanevakis, Maria Thessalou-Legaki

 Department of Zoology-Marine Biology, School of Biology,  University of Athens, Panepistimioupolis, 15784 Athens, Greece 

 

Abstract

The occurrence of the actiniarian Alicia mirabilis in the Aegean Sea is documented for the first time from five sites of Saronikos Gulf. A. mirabilis density was assessed in one site (Lychnari bay) with line transects (underwater distance sampling with SCUBA). Density ranged between 04.3 ind are-1 (1 are = 100 m2) with a mean of 1.1 0.5 ind are-2. The species was found in a variety of substrates (sandy bottoms, weeds, seagrass beds, rocks, litter) and its distribution was aggregated. Distance sampling was an efficient way to estimate density of A. mirabillis and is proposed as a good choice for density estimations of actiniarians and other benthic fauna.