{"id":17597,"date":"2015-01-19T08:03:58","date_gmt":"2015-01-19T07:03:58","guid":{"rendered":"https:\/\/opistobranquis.info\/?page_id=17597"},"modified":"2023-04-07T13:16:01","modified_gmt":"2023-04-07T11:16:01","slug":"stylocheilus-polyomma","status":"publish","type":"page","link":"https:\/\/opistobranquis.info\/en\/guia\/aplysiida\/stylocheilus-polyomma\/","title":{"rendered":"Stylocheilus polyomma"},"content":{"rendered":"

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Stylocheilus polyomma<\/em> (M\u00f6rch, 1863)<\/h3>\n

\"Stylocheilus<\/div>
Stylocheilus polyomma @ El Hierro 17-10-2012<\/em> by Aketza Herrero<\/center><\/span>

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WoRMS Taxonomic Information<\/h3>
Current accepted name: Stylocheilus polyomma<\/em> (M\u00f6rch, 1863)<\/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>Tectipleura<\/a><\/td><\/tr>
Order<\/th>Aplysiida<\/a><\/td><\/tr>
Superfamily<\/th>Aplysioidea<\/a><\/td><\/tr>
Family<\/th>Aplysiidae<\/a><\/td><\/tr>
Subfamily<\/th>Dolabriferinae<\/a><\/td><\/tr>
Genus<\/th>Stylocheilus<\/em><\/a><\/td><\/tr>
Species<\/th>Stylocheilus polyomma<\/em> (M\u00f6rch, 1863)<\/a><\/td><\/tr><\/table>

Classification provided by the World Register of Marine Species (WoRMS). [1445911<\/a>]<\/p><\/div>Taxonomic note<\/strong>: There was a long time discussion about the identity of Stylocheilus longicauda<\/em> (Quoy & Gaimard, 1825) and Stylocheilus striatus<\/em> (Quoy & Gaimard, 1832). Unfortunately these authors noted that S. striatus<\/em> was probably the same as S. longicauda<\/em>, beginning a confusion which has persisted until the present. Today most researchers consider that there are two species of Stylocheilus<\/em>: S.striatus<\/em>, with dark longitudinal lines, a mottled colour pattern and compound papillae, and S.longicauda<\/em> with a uniform yellow or green colour, simple papillae, without lines and an extremely long slender ‘tail’. Despite these species were clearly differentiated, Yonow (2012) reverted back to the confusion by ignoring evidence presented by Rudman (1999) that they are distinct species.<\/p>\n

According to Bazzicaluppo et al<\/em>. (2020) Stylocheilus striatus<\/em> is a cryptic species complex formed by three allopatric different species:\u00a0the name S. striatus<\/em> is retained for an Indo-Pacific species, while the names S. polyomma<\/em> and S. rickettsi<\/em> are resurrected for species inhabiting the Western Atlantic and the Eastern Pacific respectively. These authors also state that “Whereas Bursatella<\/em> has colonised the Mediterranean, most likely from tropical Atlantic populations (Bazzicalupo et al. 2018), Stylocheilus<\/em> has not. Even though benthic and pelagic species of Stylocheilus<\/em> are present in both the Red Sea (Yonow, 2008) and the Canary Islands (Ortea et al., 2008), and favourable conditions have allowed the dispersal of several other species of sea slugs across the Suez Canal (Crocetta et al. 2013; Zenetos et al. 2017) and the Gibraltar Strait (Vald\u00e9s et al. 2013), something must be preventing species of Stylocheilus from making such a move”.<\/p>\n

In our opinion is is mostly because of a water temperature and \/ or sality issue. For these reasons, as the only Stylocheilus<\/em> species present in the Atlantic Ocean would be S.polyomma<\/em> (its native distribution range is from Florida to Brazil), and until genetic analysis are performed on the Canary Islands specimens, the most probable ID for the Canary Islands is, effectively, S.polyomma<\/em>.<\/p>\n

Synonyms<\/strong><\/p>\n