. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. EXTRACELLULAR LIPID IN PYGMY SQUID 49 Table I 'r. reproductive mutiiritv singe, utjti ilorstil tminlle length of stanvd Idiosepius notoides individuals examined Days 0-15 post- collection for extracellular droplets in the i/i^omr rruc! Days (post-collection) Gender maturity s & tage Mantle length Droplets (mm) seen? 0 J 1 + 0 M 3 + 4 M 3 + 4 M 3 + 4 M 3 + 4 F 5 5 M 3 + 5 M 3 + 5 M 3 + 7 M 5 + 7 F nd + 7 Mh nd + 9 J 1 nd 9 F 1 nd 10 Fa nd 10 i< 1 14 M 3 15
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. EXTRACELLULAR LIPID IN PYGMY SQUID 49 Table I 'r. reproductive mutiiritv singe, utjti ilorstil tminlle length of stanvd Idiosepius notoides individuals examined Days 0-15 post- collection for extracellular droplets in the i/i^omr rruc! Days (post-collection) Gender maturity s & tage Mantle length Droplets (mm) seen? 0 J 1 + 0 M 3 + 4 M 3 + 4 M 3 + 4 M 3 + 4 F 5 5 M 3 + 5 M 3 + 5 M 3 + 7 M 5 + 7 F nd + 7 Mh nd + 9 J 1 nd 9 F 1 nd 10 Fa nd 10 i< 1 14 M 3 15 M 3 J, juvenile: M, male; F, female; nd, no data. a Same squid examined Days 7 and 10. b This squid was used in a feeding experiment beginning later on Day 7. c Same squid examined Days 9 and 10. in the largest squid, a female. During Days 9-15 after collection, we found no droplets in any of the unfed squid (Table 1). Drops were most obvious in the cecum (Fig. la), a digestive sac near the rear of the body. The cecum wall was transparent, and the lumen of the organ contained a clear greenish or bluish fluid without obvious particles (Fig. la, b), all of which made the droplets conspicuous. We did not notice any distinct progression of color changes in cecal fluid (Lipiriski, 1990). Cecal droplets moved around, appar- ently due to ciliary currents and cecal contractions. Because the drops floated, they were easily detectable in the cecum whether we removed a dorsal or ventral piece of mantle (Fig. la, b). Unlike the lumenal oil droplets described in the loliginid squids Sepioteuthis lessoniana and Photololigo sp. (Semmens, 1998), the droplets in Idiosepius notoides ap- parently are not membrane-bound; when pushed together with a microprobe, droplets could readily fuse. We also saw droplets in the anterior end of the digestive gland, just under the edge of the uncut mantle, but these were often harder to detect than cecal drops. Drops were seen in the left, right, or both si
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