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6 results for “Oregodasys”
FIGURE 5 in Two new species of Oregodasys (Gastrotricha: Macrodasyida: Thaumastodermatidae) from Carrie Bow Cay, Belize with ultrastructural observations of the epidermal glandular system
FIGURE 5. Oregodasys katharinae sp. nov. A Dorsal view of an adult as seen from below: bipartite caudal organ (co); frontal organ (fo); posterior adhesive tubes (TbP). B Ventral view of an adult as seen from below: cirri (ci); anterior adhesive tubes (TbA); lateral adhesive tubes (TbL); ventrolateral adhesive tubes (TbVL); testis (te).
FIGURE 6 in Two new species of Oregodasys (Gastrotricha: Macrodasyida: Thaumastodermatidae) from Carrie Bow Cay, Belize with ultrastructural observations of the epidermal glandular system
FIGURE 6. Ultrastructure of the bodywall of Oregodasys katharinae sp. nov. A Section through the dorsal epidermis (ep) at the level of the pharynx (ph). B Closeup of the apical region of the dorsal epidermis showing rod-like secretory inclusions (rd) below the plasma membrane. A single electron-dense element (ede) is present within the endocuticle. C Longitudinal section through two adjacent epidermal glands showing the apical pore (po) and numerous secretory vesicles (sv) with different staining characterstics. D Apical end of an epidermal gland showing the microvillar collar (mv) that forms the apical pore. The overlying exocuticle (ex) and endocuticle (ed) are generally thickest around the papillary glands. Note the presence of a portion of a striated rootlet (sr) at the base of the photograph. E Section through an insunk epidermal gland. Note the elongate gland neck (gn) between epidermal cells that leads to a small pore (po). Electron-dense elements are abundant in the endocuticle around insunk epidermal glands. F Longitudinal section through a portion of a papilla that contains two cell types: a porous cell with an apical opening and large nucleus (nu) on the left, and a sensory cell with a striated rootlet (sr) and apical cilium (out of the field of view) on the right.
FIGURE 1 in Two new species of Oregodasys (Gastrotricha: Macrodasyida: Thaumastodermatidae) from Carrie Bow Cay, Belize with ultrastructural observations of the epidermal glandular system
FIGURE 1. Habitus of Oregodasys norenburgi sp. nov., multiple specimens. A Dorsal view. Inset: closeup of a papilla containing secretory vesicles. B Dorsal view of head region showing ocelli (oc). C DIC image of the ventral mouth (mo) margin showing the anterior adhesive tubes (TbA). D Dark-field image of the midgut region showing several ova (ov) and numerous diatom frustules (di). E DIC image of the posterior pedicles (pd), ventral view. Lateral adhesive tubes (TbL) are present on either side of the pedicles that bear the posterior adhesive tubes (TbP); locomotory cilia (ci) and ventrolateral adhesive tubes (TbVL) are also shown.
FIGURE 4 in Two new species of Oregodasys (Gastrotricha: Macrodasyida: Thaumastodermatidae) from Carrie Bow Cay, Belize with ultrastructural observations of the epidermal glandular system
FIGURE 4. Oregodasys katharinae sp. nov., transmitted light images of the holotype after resin impregnation. A Dorsal view showing numerous epidermal glandulocytes (eg) and one-half of the caudal organ (co). B Ventral view showing the oral hood (oh), mouth region (mo), pharynx (ph), singular testis (te) and bipartite caudal organ.
FIGURE 3 in Two new species of Oregodasys (Gastrotricha: Macrodasyida: Thaumastodermatidae) from Carrie Bow Cay, Belize with ultrastructural observations of the epidermal glandular system
FIGURE 3. Habitus of Oregodasys katharinae sp. nov. A Ventral view showing lateral adhesive tubes (TbL) on the posterior body margin, and posterior adhesive tubes (TbP). B Closeup of the anterior end, ventral view, showing the mouth (mo), anterior adhesive tubes (TbA) and ventrolateral adhesive tubes (TbVL). C Closeup of the lateral body wall showing the triangle-shaped papillae (tp) and blunt papillae (bp). D Closeup of a triangular papilla from a specimen that was made into a permanent wholemount. The vesicles of the underlying glandulocyte stained darkly after osmium tetroxide fixation.
FIGURE 2 in Two new species of Oregodasys (Gastrotricha: Macrodasyida: Thaumastodermatidae) from Carrie Bow Cay, Belize with ultrastructural observations of the epidermal glandular system
FIGURE 2. Oregodasys norenburgi sp. nov. A Dorsal view of an adult as seen from below: mature ova (ov); posterior adhesive tubes (TbP). B Ventral view of an adult as seen from below: caudal organ (co); ocelli (oc); anterior adhesive tubes (TbA); lateral adhesive tubes (TbL); ventrolateral adhesive tubes (TbVL); testis (te).
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