Population Characteristics of the Upper Infralittoral Sea Urchin Arbacia lixula (Linnaeus, 1758) in Eastern Mediterranean (Central Greece): An Indicator Species for Coastal Water Quality
نویسندگان
چکیده
The black sea urchin (Arbacia lixula, Linnaeus, 1758) is a non-edible marine echinoderm of high ecological importance with the potential to affect communities. A. lixula were sampled monthly for one year from supralittoral fringe at two locations in Pagasitikos Gulf, north-western Aegean Sea. Morphometric characteristics exhibited significant spatiotemporal variation. population closer proximity treated sewage effluent outflow significantly higher biometric relationships resulting possible improved physiological conditions. Spatial distribution clumped pattern dispersion, consisting predominantly six age classes. dominant cohort was four-year class, comprising 31.2% total population. Significant negative allometric between all morphometric characteristics. maximum approximate estimated 15.27 years. von Bertalanffy growth equation entire as: test diameter = 62.881×1−e−0.196×Age+1.147. gonadosomatic index indicated seasonal cycle peak late spring. sexual maturity 4.45 We observed number females than expected site effluents (32% female number).
منابع مشابه
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ژورنال
عنوان ژورنال: Journal of Marine Science and Engineering
سال: 2022
ISSN: ['2077-1312']
DOI: https://doi.org/10.3390/jmse10030395