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- W2553206070 abstract "L. media inhabits the fine, glutinous black mud which forms much of the substrate at a depth of 10 m off Salt Island and Green Island in the Quoiie estuary. This mud is largely bereft of organic material, but contains a few foraminiferans, ciliates, nematodes and harpacticoid copepods, as well as isolated sponge spicules, diatoms and algal detritus. Some unidentified faecal pellets, perhaps of planktonic origin, are also present. The macrofauna here is apparently sparse, being dominated by shore crabs (Carcinides maenas), hermits (Eupagurus spp.), shrimps (Crangon vulgaris) and solitary ascidians (Ascidiella aspersa). A small green alga, assignable to the genus Cladophora, is common, its filamentous strands frequently entangling specimens of L. media. Temperatures at a depth of 7 m close to the collecting ground have been recorded as ranging from 6.5?C in early April to 14.3?C in August. Salinities at the same station and depth run from 32.86%? in July to 34.03%? in March. Since so little is known about this holothurian, the following brief notes on its structure may be of value. Specimens collected in January-March varied from 20 mm to 30 mm in length, with an average of 23 mm. Those taken in July ranged from 25-34 mm, with an average of 30 mm. The shape and general proportions are typically synaptid (Fig. 1A). The mouth is bordered by twelve digitate tentacles, disposed in a single circlet and all of the same size. Each bears four digits. The anus is terminal and the genital pore opens mid-dorsally between two tentacle bases. The body-wall is almost transparent, though liberally sprinkled with small brown glandular papillae. In specimens taken during the summer, the gut shows through as greenish-brown and the gonadial tubes as pink in colour. The longitudinal muscles stand out as five prominent opaque bands running down the animal's length." @default.
- W2553206070 created "2016-11-30" @default.
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- W2553206070 date "1972-01-01" @default.
- W2553206070 modified "2023-09-23" @default.
- W2553206070 title "LABIDOPLAX MEDIA OESTERGREN: A SEA-CUCUMBER NEW TO BRITISH AND IRISH WATERS, WITH OBSERVATIONAL NOTES" @default.
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