{"id":27915,"date":"2019-01-07T11:31:15","date_gmt":"2019-01-07T10:31:15","guid":{"rendered":"https:\/\/opistobranquis.info\/?page_id=27915"},"modified":"2024-12-26T10:39:53","modified_gmt":"2024-12-26T09:39:53","slug":"marionia-gemmii","status":"publish","type":"page","link":"https:\/\/opistobranquis.info\/en\/guia\/nudibranchia\/tritonioidea\/marionia-gemmii\/","title":{"rendered":"Marionia gemmii"},"content":{"rendered":"

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Marionia gemmii<\/em> Alm\u00f3n, P\u00e9rez & Caballer, 2018<\/h3>\n

\"Marionia<\/div>
Marionia gemmii @ Ria de Arousa, Galicia, Spain<\/em> by Jacinto P\u00e9rez Dieste (GEMM)<\/center><\/span>

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WoRMS Taxonomic Information<\/h3>
Current accepted name: Marionia gemmii<\/em> Alm\u00f3n, J. P\u00e9rez & Caballer, 2018<\/strong><\/div>

Current classification<\/h4>
Superdomain<\/th>Biota<\/a><\/td><\/tr>
Kingdom<\/th>Animalia<\/a><\/td><\/tr>
Phylum<\/th>Mollusca<\/a><\/td><\/tr>
Class<\/th>Gastropoda<\/a><\/td><\/tr>
Subclass<\/th>Heterobranchia<\/a><\/td><\/tr>
Infraclass<\/th>Euthyneura<\/a><\/td><\/tr>
Subterclass<\/th>Ringipleura<\/a><\/td><\/tr>
Superorder<\/th>Nudipleura<\/a><\/td><\/tr>
Order<\/th>Nudibranchia<\/a><\/td><\/tr>
Suborder<\/th>Tritonina<\/a><\/td><\/tr>
Superfamily<\/th>Tritonioidea<\/a><\/td><\/tr>
Family<\/th>Tritoniidae<\/a><\/td><\/tr>
Subfamily<\/th>Marioniinae<\/a><\/td><\/tr>
Genus<\/th>Marionia<\/em><\/a><\/td><\/tr>
Species<\/th>Marionia gemmii<\/em> Alm\u00f3n, J. P\u00e9rez & Caballer, 2018<\/a><\/td><\/tr><\/table>

Classification provided by the World Register of Marine Species (WoRMS). [1292043<\/a>]<\/p><\/div>Description
\n<\/strong>Big cream coloured body, up to 200 mm long, covered with warts of the same color, with purple and white variable sized dots scattered along the body surface. Warts are irregular in shapes and sizes, with a scale-like appearance. The white spots have a calcareous scab-like appearance. The notum and the sides of the body are covered by an orange colour pattern in the dorsum, black in the body walls, forming a reticula delimiting the edges of the warts. There is a characteristic thick orange band along the notum midline, irregularly covered by patches of warts, wider and in fewer numbers in the head, gradually narrowing in size but increasing in numbers towards the tail. The rhinophores are cream coloured and cylindrical in shape, branched at the tips and with a rhinophoral sheath with a narrower border than the base, quite wide in itself. The tripinnate filaments surrounding the tips of the rhinophores are retractile and coloured light brown. Rhinophoral sheaths are covered with light brown warts.The head ends in a bilobulated “velum” provided with 8 sac-like well spaced papilla on each lobe of the velum. Each papilla has 3 to 5 digitiform tubercles. There is one oral tentacle on each side of the mouth. There are up to 10-12 arborescent gills along each side of the notum, all of them similarly sized but the ones closer to the tail, that are smaller. Each gill branches in two several times, giving them a “bushy” look. The anus is located between the fourth and fifth pair of gills on the right side of the body, while genital opening is located below the third gill, also on the right side. The foot is large and muscular, sprayed with white spots, and both the front and back ends are rounded.<\/p>\n

Biology
\n<\/strong>This species has been observed at depths between 18 and 40 meters. It apparently feeds exclusively on Leptogorgia sarmentosa<\/em> red gorgonian, very common in the type locality. The spawn is quite large, formed by a white coil tightly attached to the gorgonian branches, where the eggs are clearly visible to the naked eye. This nudibranch begins swimming by strong body contractions when disturbed (see attached video).<\/p>\n

Etymology<\/strong><\/p>\n