Kirchenpaueria pinnata ( Linnaeus, 1758 )

Gil, Marta & Ramil, Fran, 2025, Hydroids (Cnidaria, Hydrozoa) from Guinea Bissau, Zootaxa 5577 (1), pp. 1-89 : 65-66

Kirchenpaueria pinnata ( Linnaeus, 1758)

( Fig. 11C )

Sertularia pinnata Linnaeus, 1758: 813 .

Kirchenpaueria pinnata : Ramil & Vervoort, 1992a: 158–161, fig. 41A–C.— Ansín Agís et al, 2001: 183–188, fig. 74.— Peña Cantero & García Carrascosa, 2002: 106–108, fig. 20A–C.— Calder, 2012: 42–43 , fig. 42.— Gravili et al., 2015: 108–110 , fig. 77A–C.

Material examined. BISSAU-0810, stn BS147, 11º08'35"– 11º08'27"N, 17º11'31"– 17º10'37"W, 186–306 m, 26-X-2008: one colony without gonothecae, 50 mm high, growing on a worm tube.

CCLME-1110, stn BT40, 10º15'45"– 10º14'39"N, 16º55'17"– 16º54'05"W, 224 m, 27-X-2011: four colonies without gonothecae, 17–28 mm high, of which two growing on a prosobranch.

Remarks. Kirchenpaueria pinnata is a well-known species and requires no further comment. Our material represents the first record of this species for Guinea-Bissau.

Biology. Kirchenpauera pinnata has been found growing on algae, bryozoans, polychaete tubes, hydrozoans, sponges, bio-concretions, anthozoans, pebbles and D. pertusum ( Peña Cantero & García Carrascosa 2002; Gil et al. 2020). In the northern hemisphere, gonothecae were found throughout the year ( Ansín Agís et al. 2001; Peña Cantero & García Carrascosa 2002; Gil et al. 2020).

Colonies studied by us were found growing on worm tubes and prosobranchs. Gonothecae were not observed.

Distribution. This species has a mainly East Atlantic distribution, with some isolated and doubtful records from the West Atlantic, Indian and Pacific Oceans ( Ansín Agís et al. 2001). Its distribution in West Africa has been recently revised by Gil et al. (2020). Its bathymetric range extends from 0 to 769 m ( Ansín Agís et al. 2001; Peña Cantero & García Carrascosa 2002).

The colonies studied by us were collected at depths between 186–306 m.

Figures

FIGURE 11.A. Polyplumaria flabellata G.O. Sars, 1874(stnBS133), portion of colony with a hydrocladium.B. Pseudoplumaria marocana (Billard, 1930) (stn BS143), portion of hydrocladium. C. Kirchenpaueria pinnata (Linnaeus, 1758) (stn BS147), portion of hydrocladium. D–E. Nemertesia irregularis (stn BS132); portion of hydrocladium (D); female gonotheca (E). F. Nemertesia ventriculiformis (Marktanner-Turneretscher, 1890) (stn BS152), portion of hydrocladium. Scales: a–f, 0.5 mm.