Parauronema
Subclass Scuticociliatia (ref. ID; 7213)
[ref. ID; 645]
Distinguishing characteristics of the genus are the position of the oral organelles (anterior to the middle), and the infraciliature of the first membranelle (2 kineties, each with 5 kineties). P. virginianum has no resting posture. The caudal cilium is a little more than half the length of the body, and the body cilia are about 3 um long. There is a caudal contractile vacuole, with pore opening at the end of the second kinety. A macronucleus and a micronucleus lie anterior to the middle of the body. (ref. ID; 645)
- Parauronema acutum (ref. ID; 3836)
- Parauronema longum (ref. ID; 7213)
- Parauronema virginianum Thompson, 1967 (ref. ID; 645) reported author and year? (ref. ID; 191, 4006, 7536)
Descriptions
Marine ciliate. (ref. ID; 3836)
Descriptions
Analysis of the internal transcribed spacer 2 (ITS2) region. (ref. ID; 7213)
Parauronema virginianum Thompson, 1967 (ref. ID; 645) reported author and year? (ref. ID; 191, 4006, 7536)
Descriptions
Thompson describes two strains: strain A has 12 kineties and its body measures 26.5x23.6 um; strain B has 11 kineties and measures 32.2x13.6 um. Specimens from the Solar Lake population have 13 kineties and a length/width index of 28 to 12 um. 12 of the kineties are joined at the apical pole by a closed circular fibril and at the caudal end by an open circular fibril. The caudal circular fibril has a gap between kineties 1 and 12, through which kinety 13 (the first kinety on the left next to the buccal cavity) passes. Kinety 13 bears the caudal cilium, which arises in the basal-body complex. Kinety 13 merges with the posterior circular fibril between kineties 7 and 8. The 34 to 40 kinetosomes in each kinety are single in the posterior third of the body had arranged in pairs further forward. In the long axis they are connected by a direct silverline system. At the level of the 3rd and 7th kinetosome pair the kineties are joined by a commissural silverline. The free arm of the caudal circular fibril, on the right, joins the excretory pore with the cytopyge. This silver line passes forward between the first and last kineties, and bifurcates below the undulating membrane. At the bifurcation lies the scuticus. The right branch passes along the base of the undulating membrane, and the left connects the three membranelles. The buccal infraciliature can be characterized as follows: length of undulating membrane 7.6 um; distance from base of undulating membrane to anterior end 12.9 um; length of M1 2.5 um, of M2 3 um, and of M3 1 um. (ref. ID; 645)
Type locality
This species was discovered on the Virginia coast and is the only member of the genus Parauronema. (ref. ID; 645)