Scientific Note First occurrence of the interstitial polychaete Saccocirrus pussicus (Saccocirridae, Polychaeta) in exposed beaches of Uruguay

摘要: This paper reports the first occurrence of the family Saccocirridae,(Saccocirrus pussicus), in exposed sandy beaches of Uruguay. 981 individuals, with densities between 20 and 18,080 ind/m2 and mean density of 163.5±362.9 ind/m2 were found, mainly in the swash zone, with a clearly patchy distribution.