Preliminary Study On Ionic Composition In Endolymphatic Sac Of Hoplostethus Mediterraneus


Vitale S., Arculeo M.1, Aspanò E., Beltrano A.M., Bono G., Cannizzaro L., Clemente E., Manno G.2, Milazzo A., Rizzo P.


Consiglio Nazionale delle Ricerche - Istituto per l’Ambiente Marino Costiero (CNR-IAMC) – Via L. Vaccara, 61- 91026 Mazara del Vallo (TP), ITALY


1Dipartimento Biologia Animale, Università di Palermo, Via Archirafi, 18 – 90123 PA, ITALY

2Dipartimanto Ambientale Provinciale (Rep. Chimico) – ARPA Sicilia, Via Nairobi, 4 – 90100 PA, ITALY


Abstract: Silver Roughy, Hoplostethus mediterraneus (Cuvier, 1829) (Pisces; Thachichthyidae), is a benthopelagic cosmopolite fish. The samples of endolynph were collected from ten specimens with total length ranging between 14,7 cm and 22,2 cm, grouped in classes of 2 centimetres. Inductively Coupled Plasma - Atomic Emission Spectrometry (ICP-AES) Perkin-Elmer OPTIMA 3100 XL was used for the investigation of the ionic composition. A decreasing gradient in the ionic concentration [µg/l] among (versus) the smallest and biggest length classes was recorded for Ba, Cd, Mg, Na, Mn, B and Al.


Key words: Hoplostethus mediterraneus, endolynph, ionic composition, Central Mediterranean Sea


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