. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FEEDING IN ECHINOCYAMUS PUSILLUS 747 England). Substrate particles and gut contents were gently washed in distilled water to remove salts, strewn on stubs, and freeze-dried before sputter coating. Substrate Samples were taken from the grab and dredged material. They were dried at 80°C, weighed, and then ashed at 400°C for 30 min. After cooling and reweighing, the samples were passed through screens of mesh size , , , , , and mm, into a collecting pan. Each fraction was weighed separately and express
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FEEDING IN ECHINOCYAMUS PUSILLUS 747 England). Substrate particles and gut contents were gently washed in distilled water to remove salts, strewn on stubs, and freeze-dried before sputter coating. Substrate Samples were taken from the grab and dredged material. They were dried at 80°C, weighed, and then ashed at 400°C for 30 min. After cooling and reweighing, the samples were passed through screens of mesh size , , , , , and mm, into a collecting pan. Each fraction was weighed separately and expressed as a percentage of the total. Organic content, calculated from weight lost during ashing, was similarly expressed as a percentage of the total dry weight. Repeated ashing confirmed that organic material was fully oxidized in the initial 30 minute period. Estimates of shell (biogenic) to mineral (abiogenic) particle ratios were made by frequency from light microscope observation. Whenever possible, the generic origin of the biogenic material was noted. RESULTS Habitat Echinocyamus pusillus (4-14 mm length) was collected at several sites in the Firth of Lome (Fig. 1), at depths of 10 to 200 m. They were most abundant in shallow water, 10-20 m, and very sparse below about 50 m. We found no E. pusillus living in sheltered areas such as Loch Creran nor in the lee of islands but they tended to be common in locations which, according to the West Coast of Scotland Pilot (1949),. FIGURE 1. Collection sites in the Firth of Lome, West Scotland. Solid symbols mark locations where Echinocyamus pusillus was obtained by dredging; open symbols indicate Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual re
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
