Ultrastructure of the protonephridial system of Dactylogyrus sp. and an unidentified ancyrocephaline (Monogenea: Dactylogyridae) |
| |
Authors: | K Rohde N Watson and F Roubal |
| |
Institution: | * Department of Zoology, University of New England, Armidale, New South Wales 2351, Australia ? Department of Parasitology, University of Queensland, St. Lucia, Queensland 4067, Australia |
| |
Abstract: | The ultrastructure of the flame bulbs and capillaries of the protonephridia of Dactylogyrus (probably anchoratus) from Carassius auratus in southeastern Australia, and of an unidentified ancyrocephaline from the marine teleost Priacanthus macracanthus in southern Queensland is described. The cilia of the flame are anchored in the terminal cell by means of basal bodies without distinct rootlets. The nucleus of the terminal cell is basal, and (in Dactylogyrus) partly lateral to the basal bodies. The weir consists of a row of internal and a row of external ribs (rods) connected by a ‘membrane’. The external ribs are continuations of the cytoplasm of a thick-walled ‘cytoplasmic cylinder’ (proximal canal cell) which tightly surrounds most of the flame and contains a septate junction; the internal ribs are continuous with the terminal cell. Internal leptotriches arise from the perikaryon of the terminal cell, and, in the ancyrocephaline, also from the internal ribs. The wall of the protonephridial capillaries contains a septate junction, a reticulum of interconnected spaces and, in the ancyrocephaline, also lamellae. Lateral flames are common in the capillaries of Dactylogyrus. |
| |
Keywords: | Dactylogyrus Ancyrocephalinae Udonella Monogenea Platyhelminthes protonephridia flame bulbs ultrastructure phylogeny |
本文献已被 ScienceDirect 等数据库收录! |
|