. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. vl Idg f. pmo Figure 1. Early veligers of Pleurobranchaea maculata. (A) Veliger on the first day of hatching, drawn from life. (B) Veliger 7 d after hatching, drawn from life. (C. D) Bright field micrographs of veligers 7 d after hatching. Scale bar is the same for all four illustrations, a. anus; e. eye; f, foot; hr. hyaline rods; i. intestine; k, kidney rudiment; Idg, left digestive gland; Ih, larval heart; m, mantle; pmo. pigmented mantle organ; pt. pedal tuft; rdg. right digestive gland; rh. rhinophore bud; rm. retractor
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. vl Idg f. pmo Figure 1. Early veligers of Pleurobranchaea maculata. (A) Veliger on the first day of hatching, drawn from life. (B) Veliger 7 d after hatching, drawn from life. (C. D) Bright field micrographs of veligers 7 d after hatching. Scale bar is the same for all four illustrations, a. anus; e. eye; f, foot; hr. hyaline rods; i. intestine; k, kidney rudiment; Idg, left digestive gland; Ih, larval heart; m, mantle; pmo. pigmented mantle organ; pt. pedal tuft; rdg. right digestive gland; rh. rhinophore bud; rm. retractor muscle; rvl. right velar lobe; s. stomach: st. statocvst; svr. suhvelar nd°e; vl, velar lobes. and involved development of the mantle throughout most of larval life. The final stage of metamorphosis primarily in- volved loss of the velum. As the velar and subvelar cilia were shed, the highly folded surface of post-velar cells became smooth and the cells were gradually resorbed into the lower velar surface, followed by resorption of the velar Figure 2. Pediveligers of Pleurobranchaea imicitlatu. 3 weeks after hatching. (A. B) Drawing and bright field micrograph of live pediveligers. (C) Scanning electron micrograph of the overgrowth of the larval shell by the mantle. (D. E) Mantle glands in bright field and scanning electron micrographs. (F) Scanning electron micrographs of a pediveliger. (G) Scanning electron micrograph of the post-velar cells on the lower velar surface; the subvelar ridge is shown in the upper right. (H) Scanning electron micrograph of the partially i Mirhed velar lobes during metamorphosis, bm. buccal mass; cso, cephalic sensory organ; ctr. lateral ciliary tract; f. foot: glz, glandular zone; grz. growth zone; k. kidney rudiment; Ih. larval heart; m. mantle; mg. mantle gland; mo, mouth; ov. oral veil; pmo, pigmented mantle organ; pvc, post-velar cells; rh. rhinophore; sh, shell; svr. ridge: vr. velar Please note that these images are extract
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
