Hyalocylis striata (Rang, 1828)

Salvador, Xavier, Fernández-Vilert, Robert & Moles, Juan, 2022, Sea slug night fever: 39 new records of elusive heterobranchs in the western Mediterranean (Mollusca: Gastropoda), Journal of Natural History 56 (5 - 8), pp. 265-310 : 290-291

publication ID	https://doi.org/10.1080/00222933.2022.2040630
DOI	https://doi.org/10.5281/zenodo.6771989
persistent identifier	https://treatment.plazi.org/id/024087AB-D855-D12C-9ABF-222CFCF2FC84
treatment provided by	Plazi (2022-06-27 06:31:00, last updated 2024-11-26 02:50:22)
scientific name	Hyalocylis striata (Rang, 1828)
status

Treatment

Hyalocylis striata (Rang, 1828) View in CoL View at ENA

( Figure 5 View Figure 5 (b))

Material examined

Cala Sa Tuna , Begur ( Spain), 41°57 ʹ 38”N, 3°13 ʹ 52”E, 9 February 2019, 1 m depth, 1 spc GoogleMaps ., adult, L = 6 mm; Montiel , Tamariu ( Spain), 41°54 ʹ 55.9”N, 3°12 ʹ 46.3”E, 13 March 2019, 1 m depth, 4 spcs, adults, L = 6–10 mm; 14 March 2019, 1 m depth, 3 spcs, adults, L = 6–10 mm GoogleMaps .

External morphology

Shell wide, short, striated, conical, translucent. Parapodia large, transparent. Statocysts visible between shell and parapodia.

Ecology

Found in open waters close to the surface and around other pelagic pteropod and salp species.

Distribution

Cosmopolitan. In the Mediterranean Sea, it is commonly reported in the eastern part ( Koukouras 2010; OBIS 2021) and from the Italian coast ( OBIS 2021). This species was recorded in Spanish Mediterranean waters by the study of Cervera et al. (2004) but only in remote areas tens of miles from the coast. This is the first report in the vicinity of the Mediterranean Spanish coast and the first record for Catalonia.

Remarks

As for C. virgula , almost all records in the Mediterranean Sea are based on shells of specimens caught with plankton nets in open waters and at great depths ( OBIS 2021). Our specimens were found from February to March along with the massive arrival of pelagic zooplankton.

Family PERACLIDAE Tesch, 1913

Genus Peracle Forbes, 1844

References

Cervera JL, Calado G, Gavaia C, Malaquias MAE, Templado J, Ballesteros M, Megina C, Garcia-Gomez JC. 2004. An annotated and updated checklist of the opisthobranchs (Mollusca: Gastropoda) from Spain and Portugal (including Islands and archipelagos). Boletin-Instituto Espanol de Oceanografia. 20: 5 - 111.

Koukouras A 2010. Check-list of marine species from Greece. Aristotle University of Thessaloniki, Greece. Assembled in the framework of the EU FP 7 PESI project. WoRMS.

OBIS. 2021. Ocean Biogeographic Information System. Intergovernmental Oceanographic Commission of UNESCO. Accessed 2021 May 22. www. iobis. org

Figures

Figure 5. Photographs of live Pteropoda species: (a) Creseis virgula. (b) Hyalocylis striata. (c) Peracle reticulata. (d) Pneumodermopsis canephora. Runcinida: (e) Runcina ornata. Sacoglossa: (f) Aplysiopsis elegans. (g) Caliphylla mediterránea. (h) Cyerce graeca.