Ischnochiton pusio (Sowerby I, 1832)

Rosenfeld, Sebastian, Aldea, Cristian, Mansilla, Andres, Marambio, Johanna & Ojeda, Jaime, 2015, Richness, systematics, and distribution of molluscs associated with the macroalga Gigartina skottsbergii in the Strait of Magellan, Chile: A biogeographic affinity study, ZooKeys 519, pp. 49-100 : 53-54

Ischnochiton pusio (Sowerby I, 1832) Fig. 3B

Material examined.

3 spm (11 × 6 - 16 × 9 mm).

Synonymy.

See Kaas and Van Belle (1994).

Remarks.

Regarding its habits, Reid and Osorio (2000) commented that Ischnochiton pusio inhabits the lower part of the rocks and other hard substrates in the intertidal zone up to 90 m, with a depth preference between 5 and 30 m in the fjord zones. Consequently, Schwabe et al. (2006) mentioned that this species is less tolerant of the fluctuations in salinity, and for that reason, inhabits below the halocline.

Distribution.

WTSP: Perú ( Kass and Van Belle 1994), Juan Fernández Islands ( Kass and Van Belle 1994), Antofagasta ( Plate 1899), Valparaíso ( Broderip and Sowerby 1832) and Talcahuano ( Plate 1899). Magellanic: Puerto Montt ( Plate 1899), Gulf of Ancud ( Leloup 1956), Reloncaví Sound ( Leloup 1956), Comau Fjord ( Schwabe et al. 2006), Estero Elefantes ( Reid and Osorio 2000), Puerto Edén ( Dell 1971), and Smyth Channel ( Castellanos 1956); Strait of Magellan ( Castellanos 1956): Punta Santa María (this record) and Carlos III Island ( Aldea et al. 2011a).