{"id":10655,"date":"2013-10-04T21:58:53","date_gmt":"2013-10-04T19:58:53","guid":{"rendered":"https:\/\/opistobranquis.info\/?page_id=10655"},"modified":"2020-12-12T10:33:31","modified_gmt":"2020-12-12T09:33:31","slug":"calma-gobioophaga","status":"publish","type":"page","link":"https:\/\/opistobranquis.info\/en\/guia\/nudibranchia\/fionoidea\/calma-gobioophaga\/","title":{"rendered":"Calma gobioophaga"},"content":{"rendered":"

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Calma gobioophaga<\/em> Calado & Urgorri, 2002<\/h3>\n

\"Calma<\/div>
Calma gobioophaga<\/em> by Enric Madrenas<\/center><\/span>

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WoRMS Taxonomic Information<\/h3>
Current accepted name: Calma gobioophaga<\/em> Calado & Urgorri, 2002<\/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>Aeolidina<\/a><\/td><\/tr>
Superfamily<\/th>Fionoidea<\/a><\/td><\/tr>
Family<\/th>Calmidae<\/a><\/td><\/tr>
Genus<\/th>Calma<\/em><\/a><\/td><\/tr>
Species<\/th>Calma gobioophaga<\/em> Calado & Urgorri, 2002<\/a><\/td><\/tr><\/table>

Classification provided by the World Register of Marine Species (WoRMS). [181241<\/a>]<\/p><\/div>

Taxonomic note<\/strong>: The phylogenetic analyses performed by Cella et al. (2016) revealed that the traditional Tergipedidae family is polyphyletic and belongs to a larger monophyletic clade including members of the traditional families Eubranchidae, Fionidae and Calmidae; this was an unexpected result, since the validity of these taxa and their distinctness from the Tergipedidae was never questioned before. They proposed to join the families Tergipedidae, Eubranchidae, Calmidae and Fionidae under the name of Fionidae. This decision has been reinterpreted and completed in the paper by Korshunova et al. (2017) because it obviated evident morphological and molecular aspects.<\/p>Calma gobioophaga<\/em> has recently been described based on specimens captured off the coast of Portugal (Calado & Urgorri, 2002). So far, until its description, the only other known species of the genus Calma <\/em>was C. glaucoides<\/em> a strictly European species, known since 1854 and described by Alder & Hancock as Eolis glaucoides<\/em>, cited in both the Atlantic and Mediterranean coasts. The study of the samples from the Portuguese coast has allowed to differentiate in the genus Calma<\/em> two sympatric<\/em> species coexisting in the same geographical range and living in the same habitat: C. glaucoides <\/em>and C. gobioophaga<\/em>. Calado & Urgorri (2002) indicate the main differences between the two species, the longest propodial tentacles of gobioophaga<\/em>, the larger eyes, located immediately behind the base of the rhinophores in gobioophaga<\/em> (smaller and located more behind of the base of the rhinophores in glaucoides<\/em>), kidney located between the second and last group of cerata in gobioophaga<\/em> (between the second and fifth or sixth group of cerata in glaucoides<\/em>), smaller egg size in gobioophaga<\/em>, Gobius niger<\/em> eggs feeding in gobioophaga<\/em> (Lepadogaster lepadogaster<\/em>, L. purpurea<\/em>, L. candollei<\/em>, Parablennius gattorugine<\/em> or P. pilicornis<\/em> egg feeding in glaucoides<\/em>). Very recently Prkic et al. (2014 ) have located numerous specimens of C. gobioophaga<\/em> off the coast of Croatia that surely are the first record of the species for the Mediterranean Sea. These authors also performed a molecular study (COI and 16S genes) of specimens from different localities of C. glaucoides <\/em>and C. gobioophaga<\/em> confirming the separation of the two species.<\/p>\n

Description<\/strong>
\nSpecimens of this species can reach up to 20 mm in length but most often measure around 10 mm. The body is rather flattened, semi-transparent and slightly yellowish or brown, but can vary according to the nutritional status of the animal and the kind of fish eggs ingested. The rhinophores and oral tentacles are short and smooth and of the same color of the body but with a band of opaque white pigment is observed in the tip. The eyes are large and are located directly behind the base of the rhinophores. The cerata are gathered in 7-10 groups on both sides of the back and with 3-4 cerata per group, with the anterior two groups located in front of the heart area. The cerata are short and with the same color of the body, somewhat inflated in its central area and its apex is usually whitish; within the cerata, digestive gland may be more or less dark brown color or cream. The kidney of the animal can be seen by transparency as a somewhat thick cord that runs through the body from the second pair of cerata to the last. The foot is wide and in the anterior zone has a pair of thin, finger-like propodial tentacles. The tail is short and is usually covered by the last group of cerata.<\/p>\n

Biology<\/strong>
\nThis newly described species generally lives in shallow water, below the stones. It is frequently found with high gregariousness, up to 70 specimens located under the same stone. It feeds on eggs of several species of the Gobiidae fish family, such as Gobius niger<\/em> and G. cobitis<\/em> (Calado & Urgorri, 2002; Prkic et al 2014.). The spawn is also laid on the underside of stones in the form of a fine scalloped and irregularly spiralled cord, with white eggs measuring 127 microns.<\/p>\n

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