. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DEVELOPMENT OF A DIMORPHIC OPHIUROID 27. Figure 1. Male and female of Ophiodaphne formula and their host, Astriclypeits mamu. (A) Magnified view of the female paired with a much smaller male of O. fonnata. both detached from the host shown in C. Note the dwarf male (short arrow), with his oral surface against that of the larger female (long arrow I, and his arms (arrowheads) alternating with hers. Views of the female and male are oral and aboral, respectively. (B) Aboral view of a sand dollar, A. manni. Arrow indicates a lun
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DEVELOPMENT OF A DIMORPHIC OPHIUROID 27. Figure 1. Male and female of Ophiodaphne formula and their host, Astriclypeits mamu. (A) Magnified view of the female paired with a much smaller male of O. fonnata. both detached from the host shown in C. Note the dwarf male (short arrow), with his oral surface against that of the larger female (long arrow I, and his arms (arrowheads) alternating with hers. Views of the female and male are oral and aboral, respectively. (B) Aboral view of a sand dollar, A. manni. Arrow indicates a lunule. (C) Female specimen of carrying a dwarf male close to the lunule on the oral side of A. manni. Note her position, with two arms (arrows) hooked over the edge of the lunule. (D) Aboral view of the female. The body of the male is hidden by the female, but the tips of two of his arms (arrowheads) are visible. (E) Horizontal section of a male specimen of O. fonnata with mature sperm (arrows) in a pair of testes situated at the interradius. The space above the testes is a body cavity (BC) near the stomach (S). (F) Compressed ovary rilled with ova (OO) with germinal vesicle (arrows). Scale bars: 3 cm (B), 3 mm (C. D), 1 mm (A), and 100 ^im (E. F). males have 4 spines, whereas those of females have 8. Females possess grooves on their radial shields and disk scales of the disk (Fig. 2D, E) and tentacle scales on the oral side of the arm, while males do not (Fig. 2F, G). In contrast to the sexual dimorphism in adults, recently metamorphosed juveniles, whose disks are about 400 /urn in diameter, do not vary morphologically among individuals. However, the smallest specimen collected on a sand dollar. 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
Size: 1426px × 1753px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
