Fróðskaparrit - 01.01.2006, Síða 138

136
SOLITARY ASCIDIANS (TUNICATA, ASCIDIACEA
AND SORBERACEA) OF THE FAROES
General depth range: The general depth
range of the species.
Remarks: Here, I have made remarks that I
find relevant.
Class ASCIDIACEA
Order APLOUSOBRANCHIA
Family: CIONIDAE
Genus: Ciona Fleming, 1822
Fif’iire 1. Ciona intestinalis (from Liitzen, 1967).
Ciona intestinalis (Linnaeus, 1767)
Good description: Hartmeyer, 1924: 90-104; Millar,
1953; 1966: 37-38, fig. 23.
Previous records: “Diana” 1884: Tórshavn (Hartmeyer,
1924). “Diana” 1884?: Tórshavn; Trongisvágur
(identification by Fjelstrup in 1887); (Hartmeyer,
1924). “Thor” 1899: Off Borðuni 144 m; between
Stong and Eystnes 180 m; Klaksvík 20 m (Hartmeyer,
1924); “Michael Sars" 1902: East of the Faroes 110
m (62°16'N-06°06'W); southeast of the Faroes 290
m (61° 10'N;05°46'W) (Bjerkan, 1905). “Beskytt-
ererí' 1926: North of the Faroes 82 m; Hvannasund
80 m; Funningsfjørður 60 m; Vestmanna; Sundini
offVíkarnes 15-20 m; Nólsoy 180 m; Trongisvágur
off Punthavn 8-10 m; Hvítanes 20-27 m; Ørðavík;
TrongisváguroffHvítanes 20-27 m; Vágsfjørður 44
m ; Faroe Bank (61°08'N ; 06°47'W) (Árnbáck-
Christie-Linde, 1952). “Dana” 1927: Skálaljørður 58
m (62°07'N ; 06U44'W) (Árnbáck-Christie-Linde,
1952).
BIOFAR stations (number of indi viduals in parentheses):
89(1); 111(1); 118(1); 156(2); 158(1); 282(1); 303(1);
322(1); 327(1); 368(5); 373(1); 424(1); 484(1);
486(1); 544(2); 597(1); 604(2); 1006(2); 1014(1);
1027(1); 1030(2); 1139(1); 1140(1); 1162(1);
1163(1); 1198(1); 1199(1); 1201(2); 1204(1);
1205(1); 1216(2); 1235(2); 1237(2); 1239(2);
1242(1); 1245(1); 1377(1); 1413(1); 1431(2);
1434(4); 1451(1); 1453(1); 1484(2); 1506(1);
1517(7); 1521(12); 1543(4); 1562(8); 1587(4);
1590(1); 1595(1); 1597(1); 1606(1); 1610(1);
1612(9); 1614(1); 1625(11); 1632(1); 1636(1);
1637(5); 1638(2); 1642(3); 1644(1); 1662(2);
1664(8); 1665(2); 1674(1); 1675(2); 1676(1);
1710(1); 1746(4); 1750(8); 1789(1); 1791(7);
1797(4); 1801(34); 1807(3); 1808(1); 1811(1)1
1813(1); 1815(2); 1818(1); 1837(1) (in addition to
these records, a total of 29 individuals of C. intesti-
nalis are identifíed, that cannot be located to station)-
BIOFAR area: Shelf; Faroe-Iceland Ridge; Faroe-Shet-
land Channel; Faroe Bank slope; Wyville-ThomP'
son Ridge, south western slope (Fig. 2).
BIOFAR depth range: 5-700 m.
BIOFAR temperatures: Estimated range 1.5 to 8.6 °C.
BIOFAR water mass: Mainly AW.
North Atlantic/Nordic Seas distribution: Svalbard; Bear
Island; coast of Norway; western coast of Sweden;
Denmark; North Sea; coasts of France; coasts of
Spain; coasts of Great Britain; Shetland; Faroes; Ice-
land (Millar, 1966); northern North America (Van
Name, 1912)).
General distribution: All the temperate regions of the
world.
General depth range: From lowerpart ofthe shore to niore
than 1300 m (Liitzen, 1967).
Remarks: The six records from the deeper parts off the
shelf (plateau) are noteworthy. C. intestinalis f. tyP'
ica is normally replaced below 500 m by the two Arc-
tic forms (gelatinosa and longissima), and although
not all temperatures estimated (t.e.) indicate it, water
mass with Arctic origin does sometimes occur in ah