. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 120 P. R. FLOOD ET AL EW :. ExV Figure I. Lateral view of a live Oikupleura vanhoeffeni heating its tail inside a house faintly stained by Sepia ink. Bright field macrograph at seven times magnification. [The nomenclature used is adopted from Flood (1983) and is largely a direct translation of Lohmann's German names (Lohmann. 1956).] In addition to numerous details of the inside walls (/»") of the house, like the prominent exit spout (ExS) and valve (E\"I"), a keel (A), cushion chambers lateral () and ante
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 120 P. R. FLOOD ET AL EW :. ExV Figure I. Lateral view of a live Oikupleura vanhoeffeni heating its tail inside a house faintly stained by Sepia ink. Bright field macrograph at seven times magnification. [The nomenclature used is adopted from Flood (1983) and is largely a direct translation of Lohmann's German names (Lohmann. 1956).] In addition to numerous details of the inside walls (/»") of the house, like the prominent exit spout (ExS) and valve (E\"I"), a keel (A), cushion chambers lateral () and antero-medial (aCC) to the inlet openings, inlet funnels (//•"»). roof dimples (rd), and a roof hump (rli), numerous internal details can be seen. The animals trunk (7>), tail (Ta), and escape chamber (EsCh) as well as the trunk chamber (TrCh), tail chamber (TaCh). supply passage (SP). and suspension of the food-concentrating niters (FCF) in the posterior chamber (PCh) are faintly outlined. Numerous fecal pellets (/•"/*) stained completely black by Sepia ink are seen along the floor of the posterior chamber. The external wall (/:'H') is only visible above the hump in the inside roof. 1mm hered to the internal walls and septae of the house and made them easily visible. By varying the concentration of Sepia ink from experi- ment to experiment, the intensity of staining could be controlled to reveal different features of the house. When a specimen of Oikopleura vanhoeffeni expanded its house in seawater containing very dilute Sepia ink, the internal walls, septae, and niters were shown in great de- tail (Fig. 1), whereas heavy staining made the house less transparent and revealed delicate patterns of lines and fields on the internal walls and septae throughout the house (Figs. 2, 3). The outer wall of the house, however, had no affinity for the ink and was rarely seen at all in bright field illumi- nation (Fig. 1). However, in most cases its presence was revealed by
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
