Pyura legumen (Lesson, 1830)

Turon, Xavier, Cañete, Juan I., Sellanes, Javier, Rocha, Rosana M. & López-Legentil, Susanna, 2016, Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile, Zootaxa 4093 (2), pp. 151-180 : 175-176

publication ID

https://doi.org/10.11646/zootaxa.4093.2.1

publication LSID

lsid:zoobank.org:pub:ECC66298-6885-47B3-B797-8D30AA05927F

DOI

https://doi.org/10.5281/zenodo.5630346

persistent identifier

https://treatment.plazi.org/id/03C88E54-FF81-FFAA-FF77-B7B9FB2B3112

treatment provided by

Plazi

scientific name

Pyura legumen (Lesson, 1830)
status

 

Pyura legumen (Lesson, 1830)

Fig. 14 View FIGURE 14. A C,D

References and synonymy: Boltenia legumen Lesson (1830 a) p. 149; Millar (1960) p. 119; Pyura legumen Van Name (1945) p. 326; Kott (1969) p. 133; Monniot & Monniot (1983) p. 88.

Localities: 1 S, 2 S

The individuals are ovoid, up to 6 cm in maximal dimension. The oral siphon is terminal and the atrial siphon is widely separated from it. The individuals are borne on a stalk that originates ventrally. The tunic is thin but firm, of brownish-pinkish tones, and is covered by branched spines (to 0.5 mm in length). The tunic of the inner side of the siphons is carpeted by minute (70–100 mm) pointed spines. There are ca. 12 well-developed branched tentacles with smaller ones in-between. The aperture of the neural gland is “U” shaped with horns rolled inward. There are seven folds on each side of the branchial sac. The stomach is long, and the intestine describes a narrow primary loop all along the ventral side, with almost no secondary curvature. There is one gonad on each side, the left one within the intestinal loop. The most prominent internal feature of this species is the presence of two big endocarplike elongated masses at each side of the body (dorsal to the gonads and digestive tube), and three rounded, smaller ones surrounding the aperture of the atrial siphon.

Remarks. This is a well-known species present in the Patagonian shelf and the Falkland Islands. Sanamyan & Schories (2003) report its presence in the vicinity of Punta Arenas. Monniot & Monniot (1983) discuss the morphological features of the stalked Pyura species from the Antarctic and subantarctic waters.

Kingdom

Animalia

Phylum

Chordata

Class

Ascidiacea

Order

Pleurogona

Family

Pyuridae

Genus

Pyura

Loc

Pyura legumen (Lesson, 1830)

Turon, Xavier, Cañete, Juan I., Sellanes, Javier, Rocha, Rosana M. & López-Legentil, Susanna 2016
2016
Loc

Pyura legumen

Van Name 1945
1945