Didemnidae ...

• Main Authors: Monniot, Françoise, Dettai, Agnès, Eleaume, Marc, Cruaud, Corinne, Ameziane, Nadia
• Format: Text
• Language: unknown
• Published: Zenodo 2011
• Subjects: Biodiversity; Taxonomy; Animalia; Chordata; Ascidiacea; Enterogona; Didemnidae; Antarc*; Antarctic
• Online Access: https://dx.doi.org/10.5281/zenodo.6187330; https://zenodo.org/doi/10.5281/zenodo.6187330

Didemnidae Didemnum biglans (Sluiter, 1906) (Figure 2) Sluiter, 1906: 29 pl. 2 figs 27, 28. Millar 1960: 57 fig. 11. Kott 1969: 75 and synonymy. Monniot & Monniot 1983: 42 fig. 7 DE, pl.3 H, I and synonymy. Vasseur 1974: 617 figs. 4, 5, pl. 2 fig 1 Stations (events when several trawling operations per station): 2-5-8-9-13 A-21-40-54A-65(322). The colonies settle in thin crusts on all kinds of substrates: rocks, pebbles or other invertebrates. The abundance of spicules varies in different parts of a same colony. The wide common cloacal cavity encircles pillars of tunic containing the zooids. The larvae are embedded in the basal layer of the colonies, close to the substrate; they are often missing in the damaged colonies of the CEAMARC cruise. The main characters of the species are a small atrial languet, well expanded lateral thoracic organs, no fixative appendage. The testis, with one or two closely pressed vesicles, is circled with 4 to 5 turns of the sperm duct. The larvae 1.6 to 1.8mm long have 3 ... : Published as part of Monniot, Françoise, Dettai, Agnès, Eleaume, Marc, Cruaud, Corinne & Ameziane, Nadia, 2011, Antarctic Ascidians (Tunicata) of the French-Australian survey CEAMARC in Terre Adélie, pp. 1-54 in Zootaxa 2817 on pages 9-10, DOI: 10.5281/zenodo.277174 ...