title: Myxobolus microcystus sp. N. (Protozoa: Myxosporida) from the gills of Micropterus salmoides (Lacépède 1802) in southern Illinois.
abstract: Myxobolus microcystus sp. n. is described from the gills of the largemouth bass, Micropterus salmoides. Mean spore dimensions (in micrometers) are as follows: spore length 12.5; spore width 7.5; spore thickness 5.5; polar capsule length 6.5; polar capsule width 2.5; extended length of polar filaments 21 to 37; polar filaments with 6 to 7 coils. In histological sections, hyperplasia of infected filaments, atrophy of lamellae, partial occlusion of the efferent artery, and reduction in the number of peripheral goblet cells were observed.
mesh_terms: D000818:Animals; D056890:Eukaryota / Q000145:classification* / Q000166:cytology; D005393:Fish Diseases / Q000469:parasitology; D005399:Fishes / Q000469:parasitology*; D005880:Gills / Q000469:parasitology*; D007087:Illinois; D011528:Protozoan Infections / Q000469:parasitology; D011529:Protozoan Infections, Animal