Zschokkella helmii n. sp. (Myxozoa: Myxosporea), a new parasite of marbled spinefoot Siganus rivulatus (Forsskal 1775), Red Sea, Egypt: light and transmission electron microscopy.
Zschokkella helmii n. sp., a new parasite of Siganus rivulatus from the Red Sea, Egypt, was described using light and transmission electron microscopy. However, the infection was severe; single "histozoic" plasmodium was encountered in the gallbladder wall. Spores are ellipsoid with 9-11 valvar striations. Spore mean length is 10.8 microm (10.0-11.0), while the spore mean width is 7.5 microm (7.0-8.0). Polar capsules are nearly round with a diameter of 2.2 microm (2.0-3.0) and have five filaments. Ultrastructure of the plasmodial wall and sporogenesis of the present species followed the usual pattern valid for most studied myxosporean species.
Abdel-Ghaffar
F
F
Zoology Department, Faculty of Science, Cairo University, Giza, Egypt. fathyghaffar@yahoo.com
Ali
M A
MA
Al Quraishy
S
S
Entzeroth
R
R
Abdel-Baki
A S
AS
Al Farraj
S
S
Bashtar
A-R
AR
D000818:Animals; D004534:Egypt; D056890:Eukaryota / Q000145:classification* / Q000254:growth & development / Q000302:isolation & purification / Q000648:ultrastructure*; D005393:Fish Diseases / Q000469:parasitology*; D005704:Gallbladder / Q000469:parasitology; D019156:Indian Ocean; D008853:Microscopy; D046529:Microscopy, Electron, Transmission; D010473:Perciformes / Q000469:parasitology*; D011529:Protozoan Infections, Animal / Q000469:parasitology*; D013045:Species Specificity; D033761:Spores, Protozoan / Q000648:ultrastructure