PubMed Health⌕ Search

Biomedical subjects

G D Schmidt

Publications and source records attributed to G D Schmidt.

At least 19 recordsLinked to original sources
PubMed1989

Australiformis semoni (Linstow, 1898) n. gen., n. comb. (Acanthocephala: Moniliformidae) from marsupials of Australia and New Guinea.

Australiformis n. gen. is erected for Echinorhynchus (Gigantorhynchus) semoni Linstow, 1898, from Australian and New Guinea marsupials. The new genus differs from Moniliformis and Promoniliformis in lacking spiral muscles in the outer wall of the proboscis receptacle. Linstow's species, E. semoni, is redescribed from abundant material from Peramelidae and Dasyuridae from Australia and New Guinea.

Acanthocephala↗
PubMed1988

Two new species of Moniliformis (Acanthocephala: Moniliformidae) from Malaysia.

Moniliformis tarsii n. sp. was found in Tarsius bancanus. It is unique in possessing 11-12 longitudinal rows of 6-7 hooks each. Hooks 2 and 3 are conspicuously enlarged, 41-55 microns long. Moniliformis echinosorexi n. sp. differs from all other species in having 12-15 rows of 11-13 hooks that are 34-36 microns long, and in having a proboscis receptacle 1.2-2.0 mm long. Several new host records for M. moniliformis are presented.

Acanthocephala↗
PubMed1988

Helminths of swallows of the mountains of Colorado, including Acuaria coloradensis n. sp. (Nematoda: Spirurata).

Thirty-three tree swallows, Iridoprocne bicolor, and 5 violet-green swallows, Tachycineta thalassina, from the eastern slope of the Rocky Mountains of northern Colorado were examined for helminths. Six species were found: Diplotriaena obtusa, Acuaria coloradensis n. sp. (Nematoda); Vitta magniuncinata, Angularella audubonensis (Cestoda); Plagiorchis maculosus (Trematoda); Mediorhynchus papillosus (Acanthocephala). The new species is most similar to A. multispinosa Perez Vigueras, 1937, but has 11 pairs of anal papillae and spicules measuring 125 micron and 140 micron.

Acanthocephala↗
PubMed1985

Rhinebothrium biorchidum n. sp., a tetraphyllidean cestode from a yellow-spotted stingray, Urolophus jamaicensis, in Jamaica.

Rhinebothrium biorchidum n. sp. (Tetraphyllidea: Phyllobothriidae) is described from the spiral valve of the yellow-spotted stingray, Urolophus jamaicensis, from Jamaica. It was most similar to R. spinicephalum Campbell 1970 but differed by having fewer proglottids (15 to 26 vs. 36 to 49), smaller peduncle (110 to 146 vs. 330 to 470) and pedicels (100 to 180 vs. 170 to 370), fewer transverse septa (6 to 8 vs. 16 to 17), fewer total loculi per bothridium (22 to 30 vs. 32 to 34) and larger ovarian lobes (148 to 310 vs. 88 to 176). A key to bitestate species of Rhinebothrium is included.

Animals↗
PubMed1983

Ascarops talpa sp. n. (Nematoda: Spirocercidae) from the formosan mole, Talpa micrura insularis, in Taiwan.

Ascarops talpa sp. n. (Nematoda: Spirocercidae) is described from the small intestine of the Formosan mole, Talpa micrura insularis, from Taiwan. It is most similar to A. kutassi (Shul'ts, 1927) and A. tuvensis Sulimov, 1961. Ascarops kutassi differs by having a smaller ratio of left to right spicule length (1:4 vs. 1:5.5), no caudal alae, by its preanal papillae that are not equidistant from one another, and in its area rugosa which extends 1.25 mm anterior to the anus. Ascarops tuvensis differs by having a smaller ratio of left to right spicule length (1:3.8 vs. 1:5.5), by its preanal papillae that are not equidistant from one another, and in its area rugosa which covers only the ventral tip of the tail.

Animals↗
PubMed1978

Tapeworms of the Chaco Boreal, Paraguay, with two new species.

Mathevotaenia paraguayae sp. n. is described from Euphractus sexcinctus. It differs from M. didelphidis (Rud.) in having a transverse cirrus pouch anterior to the vagina. Monoecocestus mackiewiczi sp. n. was found in Phyllotis sp. It differs from M. parcitesticulatus Rego in having a much smaller scolex, a poral ovary, and a cirrus pouch 360 to 440 micrometers long. Other species reported are Taenia macrocystis, Taenia omissa, Spirometra mansonoides, Spirometra gracilis, Spirometra longicollis, Diphyllobothrium trinitatis, Atriotaenia parva, and Mathevotaenia tetragonocephala.

Animals↗
PubMed1978

The parasite fauna of the American alligator (Alligator mississippiensis) in South Carolina.

Twelve American alligators (Alligator mississippiensis) were obtained from three different areas of South Carolina. One species of pentastome (Sebekia oxycephala), two species of nematodes (Dujardinascaris waltoni and Multicaecum tenuicolle), four species of trematodes (Polycotyle ornata, Acanthostomum coronarium, Archaeodiplostomum acetabulatum and Pseudocrocodilicola americaniense) and one species of hemogregarine (Haemogregarina crocodilnorum) were recovered. Polycotyle ornata was observed only in alligators from Par Pond while P. americaniense was found in Par Pond and coastal hosts, A. acetabulatum from Kiawah Island and coastal alligators, and A. coronarium only at Kiawah Island. These patterns suggest disjunct distributions for the trematode species in South Carolina alligators. The other parasites were found in alligators from all three locations. The only parasite observed to initiate damage or lesions in the alligator was the pentastome.

Alligators and Crocodiles↗
PubMed1977

Revision of Mediorhynchus van cleave 1916 (acanthocephala) with a key to species.

Species characters in Mediorhynchus are discussed, and a consistent method of describing hook arrangement, longitudinal rows, is proposed. Mediorhynchus papillosus Van Cleave 1916, and M. orientalis Belopol'skaya 1953 are redescribed, and M. edmondsi sp. n. is described from Palawan. The new species is most similar to M. rodensis Cosin 1971 in armature, but differs from it in proboscis shape and overall size. Among other new records are M. gallinarum (Bhalerao, 1937) in chickens in Palawan, and M. turnixena (Tubangui, 1933) from a button quail in Palawan. Several synonymies are pointed out and several unidentifiable species are mentioned. A key to 29 species recognized as valid is provided.

Acanthocephala↗
PubMed1977

Praesomal musculature of the acanthocephalan genus Mediorhynchus Van Cleave 1916.

The praesomal musculature of Mediorhynchus is described. The proboscis is considered to consist of 3 zones: an anterior protoboscis, a median mesoboscis, and a posterior teloboscis. New structures reported are mesoboscis retractor muscles, the formation of 3 ligament strands from the proboscis retractor muscles, a teloboscis inflator muscle, and conduit through the protrusor muscle sheath. Some aspects of the taxonomy of Mediorhynchus are discussed.

Acanthocephala↗
PubMed1977

Tupaiataenia quentini gen. et sp. n. (anoplocephalidae: linstowiinae) and other tapeworms from the common tree shrew, Tupaia glis.

Three species of cestodes recovered from tree shrews, Tupaia glis, were identified as Sparganum sp., Hymenolepis diminuta, and Tupaiataenia quentini gen. et sp. n. The new genus is differentiated from Mathevotaenia, Markewitchitaenia and Atriotaenia by being craspedote, possessing a large seminal receptacle, the presence of a hermaphroditic canal leading into the genital atrium, and by having two opposable, muscular lappets on the anterior margin of each sucker.

Animals↗