Search PubMed⌕ Search

Biomedical subjects

N D Levine

Publications and source records attributed to N D Levine.

At least 37 records · Page 2Linked to original sources
PubMed1980

Some corrections of coccidian (Apicomplexa: Protozoa) nomenclature.

The following nomenclatural corrections and changes are introduced for the coccidia. NEW SPECIES: Cryptosporidium rhesi from the rhesus monkey Macaca mulatta; Cryptosporidium serpentis from the snakes Elaphe guttata, Elapha subocularis, Crotalus horridus, and Sanzinia madagascarensis; Eimeria perazae from the lizard Cnemidophorus l. lemniscatus; and Eimeria tarichae from the salamander Taricha toirosa. NEW COMBINATIONS: Orcheobius carinii for Cariniella carinii from the frog Leptodactylus ocellatus; Schellackia iguanae for Lainsonia iguanae from the iguana Iguana iguana; Schellackia weinbergi for Haemogregarina weinbergi from the lizard Tupinambis nigropunctatus; Dorisa harpia for Dorisiella harpia from the bat Harpiocephalus harpia lasyurus; Barrouxia labbei for Echinospora labbei from the centipedes Lithobius mutabilis and L. pyrenaicus; and Barrouxia ventricosa for Echinospora ventricosa from the centipede Lithobius hexodus. The generic names Lainsonia and Gordonella are synonymized with Schellackia; Echinospora with Barrouxia; and Cariniella with Orcheobius.

Animals↗
PubMed1978

Haemonchus contortus infections in Targhee and Targhee-Barbados Black-Belly cross lambs.

Targhee and Targhee-Barbados Black-Belly cross lambs that were raised helminth-free were experimentally infected with 10,000 or 25,000 infective larvae of Haemonchus contortus. There were no significant (P = less than 0.05) differences in results of weight gain, packed cell volumes, numbers of eggs per gram of feces, or numbers of helminths between the 2 groups of lambs.

Animals↗
PubMed1977

Coccidia and intestinal nematodes of East Central Illinois cats.

In a fecal examination survey (1975-1976) of 217 cats from laboratory colonies, a humane society shelter, and homes in east central Illinois, Toxocara mystax eggs were found in 32%, Toxascaris leonina eggs in 6%, Ancylostoma eggs in 9%, Capillaria eggs in 4%, Isospora felis oocysts in 23%, Isospora rivolta oocysts in 24%, and Toxoplasma or Besnoitia oocysts in 1%. The laboratory and humane shelter cats were the most heavily infected. Isospora felis and I rivolta could not be transmitted to 2 pups by feeding oocysts from the cat or to 2 other pups by feeding the organs of mice that had been fed the oocysts.

Ancylostomiasis↗
PubMed1977

Tazonomy of Toxoplasma.

After reviewing reports of the hosts, structure and life cycle of Toxoplasma, the genus is placed in the apicomplexan family Eimeriidae and the folllowing 7 species are recognized: Toxoplasma gondii (Nicolle & Manceaux) (type species) from about 200 species of mammals and birds, with oocysts in felids; Toxoplasma alencari (Da Costa & Pereira) from the frog Leptodactylus ocellatus; Toxoplasma brumpti Coutelen from the iguana Iguana tuberculata; Toxoplasma colubri Tibaldi from the snakes Coluber melanoleucus and Coluber viridiflavus; Toxoplasma hammondi (Frenkel & Dubey) (a new combination for Hammondia hammondi) from the house mouse with oocysts in the domestic cat; Toxoplasma ranae Levine & Nye from the leopard frog Rana Pipiens; and Toxoplasma serpai Scorza, Dagert & Iturriza Arocha from the toad Bufo marinus.

Animals↗
PubMed1977

Revision and checklist of the species (other than lecudina) of the aseptate gregarine family Lecudinidae.

A checklist is given of the 89 named species of the gregarine family Lecudininae, exclusive of the 42 named species of the genus Lecudina (phylum Apicomplexa, class Sporozoea, subclass Gregarinia, order Eugregarinida, suborder Aseptatina). The list includes also the synonyms, host names, locations in hosts, known geographic distributions of the species, as well as key references. Another list is given of synonyms, lapsi calami, nomina nuda, etc., associated with the genera. A new genus, Paraophioidina g.n., with type species, Paraophioidina haeckeli (Mingazzini, 1891) and a new species, Lankesteria ormieresi sp. n., are described. There are also new combinations in the genera Bhatiella, Ancora, Monocystella, Ascocystis, and Paraophioidina.

Animals↗
PubMed1977

A survey of blood and other tissue parasites of leopard frogs Rana pipiens in the United States.

In a survey of blood and other tissue parasites from 137 leopard frogs, Rana pipiens complex, purchased from 13 commercial vendors in 8 states in the United States, Trypanosoma pipientis was found in 2 R. p. berlandieri, Toxoplasma ranae in 1 R. pipiens, Isospora lieberkuehni in 1 leopard frog, Haemogregarina magna in 44, Lankesterella minima in 3, Leptotheca ohlmacheri in 3 and microfilariae of Foleyella sp. in 6. The report of I. lieberkuehni is presumably a new host record. Haemogregarina temporariae (Nöller,, 1920) nov. comb. is established as a new combination for Nematopsis temporariae.

Animals↗
PubMed1977

Nomenclature of Sarcocystis in the ox and sheep and of fecal Coccidia of the dog and cat.

The nomenclature of Sarcocystis and related protozoan genera is reviewed, and modern diagnoses of the genera Isospora, Toxoplasma, Besnoitia, Sarcocystis, and Frenkelia in the coccidian family Eimeriidae are given. S cruzi (Hasselmann 1926) comb. n., S. hirsuta Moulé 1888, and S. hominis (Railliet and Lucet 1891) comb. n. are recognized in the muscles of the ox Bos taurus; S. ovicanis Heydorn, Gestrich, Melhorn, and Rommel 1975, and S. tenella Railliet 1886 are recognized in the muscles of the sheep Ovis aries; S. bigemina (Stiles 1891) comb. n., S. cruzi, S. ovicanis, S. bertrami Doflein 1901, S. miescheriana (Kühn 1865) Lankester 1882, I. ohioensis Dubey 1975, I. canis Nemeséri 1959, Isospora sp. n. Dubey, and Isospora sp. n. Trayser and Todd are recognized in dog (Canis familiaris) feces; and S. hirsuta, S. tenella, S. muris (Blanchard 1885) Labbé 1899, B. besnoiti (Marotel 1912) Henry 1913, Besnoitia sp. n. Frenkel, T. gondii (Nicolle and Manceaus 1908) Nicolle and Manceaux 1909, T. hammondi (Frenkel 1974) Levine and Nye 1976, I. rivolta (Grassi 1879) Wenyon 1923, and I. felis Wenyon 1923 are recognized in cat (Felis catus) feces. Hoareosporidium Pande, Bhatia, and Chauhan 1972 is considered a synonym of Sarcocystis.

Animals↗
PubMed1977

Developmental arrest of Haemonchus contortus larvae in lambs given larval inoculum exposed to different temperatures and storage conditions.

The temperature (15 or 30 C) at which Haemonchus contortus larvae were allowed to develop to the infective (3rd) stage and the temperature at which they were subsequently stored (4, 15, or 30 C) had no effect on the occurrence of developmental arrest (larval impasse) of the larvae in infected lambs. If a large inoculating dose (10,000 larvae) was given to the lambs, a smaller percentage of nematodes was retained (14.2%) then if a small dose (1,000 larvae, 25.8% retention) was given, but the percentage of larvae in developmenttal arrest was greater (7.7% of the retained nematodes vs 0.02%). The temperatures of larval development and storage had no effect on the sex ratio of the adults that developed (46.3% male nematodes).

Animals↗
PubMed1976

Effect of desiccation on the survival of infective Haemonchus contorus larvae under laboratory conditions.

When stored in water at 4 and 20 C, respectively, 42 and 36% of free 3rd-stage, infective larvae of Haemonchus contortus were alive after 256 days. When stored at -95 C, 73% of the free, desiccated larvae died during the 1st half hour and 80% during the 1st half day; thereafter no more died for 255 days, the duration of the experiment. Desiccation protected the larvae against death on storage at temperature below freezing, but it was harmful at temperatures above freezing. H. contortus larvae do not withstand a single episode of desiccation as well as Trichostrongylus colubrformis larvae.

Animals↗
PubMed1976

Effect of temperature on survival of free-living stages of Haemonchus contortus.

One percent or more unembryonated eggs of Haemonchus contortus survived in sheep fecal pellets less than 0.5 hour at -95 C, 2 hours at -28 C, 1 hour at -10 C, 4 days at 4 C, and 1 hour at 45 C. One percent or more embryonated eggs survived 1 hour at -95 and -28C, 12 hours at -10 C, 64 days at 4 C, and 12 hours at 45 C. Over half the unembryonated and embryonated eggs survived only 1 and 4 days, respectively, at 4 C. One percent or more 1st-stage larvae did not survive 0.5 hour at -95 C but did survive 0.5 hour at -28 C, 8 hours at -10 C, 16 days at 4 C, and 1 hour at 45 C. Less than 1% of 2nd-stage larvae survived up to 2 days at -95 C; all were dead by 4 days. Second-stage larvae survived 32 days at -28 C, 8 days at -10 C, 64 days at 4 C, and 2 hours at 45 C. One percent or more 3rd-stage larvae survived 256 days at -95 C, 16 days at -28 C, 32 days at -10 C, more than 256 days at 4 C, 128 days at 20 C, 64 days at 25 and 35 C, and 4 days at 45 C. Thus, the increasing order of survival was unembryonated eggs, 2nd-stage larvae, 1st-stage larvae, embryonated eggs, and 3rd-stage larvae.

Animals↗