Clytia linearis ( Thornely, 1900 )

Galea, Horia R., 2007, Hydroids and hydromedusae (Cnidaria: Hydrozoa) from the fjords region of southern Chile, Zootaxa 1597 (1), pp. 1-116 : 88-89

Clytia linearis ( Thornely, 1900)

(fig. 20G–I, table 37)

Obelia linearis Thornely, 1900: 453 , pl. 44 fig. 6.

Clytia gravieri: Picard, 1951: 346 ; Millard & Bouillon, 1973:: 51, fig. 7E–G; Millard, 1975: 215, fig. 71F–H.

Clytia linearis: Hirohito, 1974: 12 ; Cornelius, 1982: 84, fig. 12; Hirohito, 1983: 16; Rees & Vervoort, 1987: 94; Calder, 1991: 62, fig. 34; Ramil & Vervoort, 1992: 238, fig. 67B; Hirohito, 1995 (English text): 65, fig. 18H–I; Migotto, 1996: 85, fig. 16A–B; Medel & Vervoort, 2000: 38; Peña Cantero & García Carrascosa, 2002: 140, fig. 28E–F; Kelmo & Attrill, 2003: 133, fig. 5C–F; Schuchert, 2003: 160, fig. 20; Bouillon et al., 2004: 194, fig. 109F–I; Calder & Kirkendale, 2005:486.

Material examined. Stn. COM 01 —28.i.2006, 0–6 m, S92: two fertile colonies, less than 1 cm high, one on mollusc shell, the other on barnacle. Stn. COM 02 —12.i.2005, 12.5 m, S68: small, sterile colonies, epizoic on Symplectoscyphus filiformis ; 22.i. 2006, 15 m, S155: small sterile colony, epizoic on Halecium delicatulum . Stn. COM 03 —25.ii.2005, 15– 25 m, S65: small, fertile colonies, epizoic on Symplectoscyphus filiformis . Stn. COM 05 —15.xi. 2001, 20 m, S71: a fertile colony, epizoic on Symplectoscyphus filiformis . Stn. COM 07 — 25.xii. 2004, 22 m, S57: a small, sterile colony, less than 1 cm high, epizoic on Plumularia setacea . Stn. MEL 02 —06.iii. 2005, 15 m, S81: small, sterile colonies, less than 1 cm high, epizoic on Symplectoscyphus filiformis . Stn. MEL 03 —08.iii.2005, 20– 30 m, S90: several sterile colonies, epizoic on Symplectoscyphus filiformis . Stn. IVM — 28.iii.2005, S35 (8 m): several fertile colonies, ca 1 cm high, on dead gorgonian or epizoic on Bougainvillia pyramidata ( MHNG INVE 53197); S46 (8 m): one sterile colony, epizoic on Bougainvillia pyramidata ( MHNG INVE 53216); S26 (20 m): a small, fertile colony, up to 1 cm high, epizoic on Bougainvillia pyramidata ( MHNG INVE 53181); S32 (25 m): small colony, composed of several hydrothecae without gonothecae, epizoic on Bougainvillia pyramidata . Stn. CFQ — 29.iii. 2005, 32 m, S73: one sterile colony, epizoic on Bougainvillia pyramidata ; S45: one fertile colony, ca 1 cm high, on stems of unidentifiable tubulariid ( MHNG INVE 53211). Stn. CME — 28.iii. 2005, 12 m, S50: one small, fertile colony, on dead gorgonian; S62a: one fertile colony, about 1 cm high, on wood ( MHNG INVE 53242). Stn. T 16 —25.iii. 2005, 12 m, S42: a small, sterile colony, epizoic on Bougainvillia pyramidata ( MHNG INVE 53206). Stn. CAD — 12.iii. 2006, 15 m, S113: several small, fertile colonies, epizoic on Symplectoscyphus subdichotomus . Stn. CFA — 14.iii.2006, S100 (25 m): several sterile colonies, up to 1 cm high, epizoic on Hybocodon chilensis ( MHNG INVE 53354); S88 (10–30 m): several sterile colonies, epizoic on Sertularella polyzonias and Lafoea dumosa . Stn. ILA — 13.iii. 2006, 32 m, S130: a small, sterile colony, on polychaete tube. Stn. PAB — 10.iii. 2006, 20 m, S85: some hydrothecae, without gonothecae, epizoic on Symplectoscyphus subdichotomus . Stn. CCO — 09.iii. 2006, 18 m, S144: small, sterile colonies, epizoic on Symplectoscyphus sp. Stn. CAR — 08.iii.2006, 15– 25 m, S152: one sterile colony, epizoic on Bougainvillia pyramidata . Stn. CPA — 09.iii. 2005, 15 m, S170: one fertile colony, epizoic on Symplectoscyphus subdichotomus . Stn. GDA — 07.iii. 2006, 11 m, S126: small, sterile colonies composed of several polyps, epizoic on Symplectoscyphus subdichotomus . Stn. CVI — 06.iii.2006, S112 (15 m): one fertile colony, epizoic on Symplectoscyphus subdichotomus ( MHNG INVE 53363); S143 (15 m): small, sterile colonies, epizoic on Sertularella fuegonensis ; S124 (20 m): one small, sterile colony, epizoic on Lafoea dumosa ( MHNG INVE 53384); S109 (15–25 m): small, sterile colony, epizoic on Lafoea dumosa ; S142 (15–25 m): several fertile colonies, epizoic on Lafoea dumosa and Symplectoscyphus subdichotomus ; S128 (15–25 m): several small, sterile colonies, on crab carapace; S86 (15–25 m): several small, fertile colonies, epizoic on Symplectoscyphus subdichotomus , Bougainvillia pyramidata and Lafoea dumosa ; S129 (25 m): one sterile colony, on brachiopod ( MHNG INVE 53399).

Type locality. Blanche Bay , New Britain, Papua New Guinea .

Remarks. A recent redescription of C. linearis from Atlantic material is found in Ramil & Vervoort (1992). An extensive synonymy is provided by Medel & Vervoort (2000). Details on the nematocyst complement are given by Migotto (1996) for Brazilian material.

Hydroid epibionts. Modeeria rotunda ( Quoy & Gaimard, 1827) .

World distribution. Tropical and subtropical waters around the world ( Medel & Vervoort 2000).

Records from Chile. This hydroid was found in abundance at nearly all the stations, roughly from 42° to 52° S. This is the first record for Chile .