Ophthalmina kilianensis

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Mynd: Guðmundur Guðmundsson

Ophthalmina kilianensis (Plesiotype from sample Bioice2053: depth 82 m; bottom water temp. 4,1°C; loc. 65,30°N, -13,74°W Dec.Degr.)

1.       Ophthalmina kilianensis (Plesiotype from sample Bioice2053: depth 82 m; bottom water temp. 4,1°C; loc. 65,30°N, -13,74°W Dec.Degr.)

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Mynd: Guðmundur Guðmundsson

Hæð stöpla svarar til fjölda sýna þar sem tegundin er: fágæt (1-2 eintök); sjaldgæf (3-8 eintök); alltíð (9-32 eintök); algeng (>32 eintök). Gögn úr botndýraverkefninu (Bioice). (ENGLISH- Column height represents number of samples in bins where the species is: rare (1-2 specimens); occasional (3-8 specimens); common (9-32 specimens); and abundant (>32 specimens.) Data from the Bioice programme.)

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Mynd: Guðmundur Guðmundsson

Dreifing tegundar eftir dýpi, seltu og sjávarhita, innan þess breytileika sem allar sýnatökustöðvar ná yfir, sýnt sem heildarspönn lóðréttra ása. Gögn úr botndýraverkefninu „BIOICE“. (ENGLISH – Occurrence zone of the species within the range of water depth, temperature, and salinity, spanned by the "Bioice" samples; demarcated by respective y-axes.)

Almennt

Ophthalmina kilianensis Rhumbler, 1936

Ophthalmina kilianensis – Rhumbler, L. 1936, Foraminiferen der Kieler Bucht, gesammelt duch A. Remane; Teil II. Ammodisculinidae bis einsch. Textulinidae. Kiel. Meeresf. Bd. 1 (1936-1937), Heft 1, p.219-221, figs. 192-197.

Description:  Test discoidal, concave and ovate in outline, with rounded periphery; mostly planispiral and evolute. The first chambers are tubular and half a coil in length, arranged in an irregular spiral, where each whorl seems slightly oblique to the previous whorl; latest chambers are half a coil and nearly planispiral, much inflated and embracing; sometimes covering in part or wholly the initial whorls. Aperture is a simple opening at the end of the tube and without a tooth. Largest specimen is 0,7 mm, but commonly around 0,5 mm. In all 25 specimens were picked from 8 of the 1031 Bioice samples that were checked for forams.

Diagnosis: The irregular initial spiral and semi-transparent test render this species distinct from all other miliolids in Icelandic waters. 

Gudmundur Gudmundsson, IINH (gg@ni.is)

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Útbreiðsla Ophthalmina kilianensis (Bioice samples, red dots; miscellaneous IINH samples, blue dots)

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