ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04188.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSISFour new eimerian species are described from red‐backed voles.Clethrionomys gapperiin Pennsylvania. Sporulated oocysts ofEimeria clethrionomyissp. n. are ellipsoidal, 18.8 (16.5–21.5) × 14.9 (14.0–16.5) with elongate, ovoid sporocysts, 10.6 (9.5–12.0) × 6.1 (5.5–7.0). The oocyst wall is smooth, with 2 layers, and thins, with terminal cap at one or both ends. Polar granules, dark Stieda body and sporocyst residuum are present. The occyst residuum is absent. Sporulated oocysts ofEimeria gallatiisp. n. are ellipsoidal, 27.7 (21–32) × 19.3 (17–24) with ovoid sporocysts, 13.5 (12–15) × 8.8 (8–10). The oocyst wall is smooth, 2‐layered, with a micropyle and thin wall at the end opposite the micropyle. Polar granules. Stieda body and sporocyst residuum are present. The oocyst residuum is atypical, of cobwebby material. Sporulated oocysts of Eimeria pileata sp. n. are subspherical to spherical, 25.2 (20.5–29.5) × 22.5(19.5–25.5) with ellipsoidal sporocysts, 13.4(10.5–15.0) × 8.4 (7.5–9.5). The oocyst wall is rough, pitted, striated, 2‐layered, with no micropyle. Polar granules, oocyst and sporocyst residuum. Stieda body and stiedal cap are present. Sporulated oocysts ofEimeria marconiisp. n. are ellipsoidal, 13.0 (10.5–15.0) × 10.6 (9.5–12.0) with elongate, ovoid sporocysts, 7.7 (7.0–8.5) × 4.2 (3.0–4.5). The oocyst wall is smooth, single‐layered, with no micropyle. Polar granules, dark Stieda body and sporocyst re

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04189.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSISThe following new taxa of septate gregarines are established: METAMERIDAE fam. nov. includes generaMetameraDuke,DeutomeraBhatia&Setna, andCognettiagen. n., the last with the type and only speciesC. legeri(Cognetti de Martiis); family GREGARINIDAE Labbé includesDegiustiagen. n. with the type and only speciesD. hyallela(Batten&DeGiusti);Cirrigregarinagen. n., with the type speciesC. spissa(Henry) and another species,C. kamenote(Hoshide); andMolluskocystisgen. n., with the type and only speciesM. pterotracheae(Stuart). Family HIRMOCYSTIDAE (Grassé) includesArachnocystisgen. n., with the type speciesA. arachnoidea(Devdhar&Gourishankar) and 3 other speciesA. nitida(Geus),A. oribatidae(Geus),A. scutovertexi(Erhardová). Family ACTINOCEPHALIDAE (Léger), subfamily Actinocephalinae (Léger), includesChilogregarinagen. n., with the type speciesC. striata(Léger&Duboscq) and 3 other speciesC. brasiliensis(Pinto),C. dujardini(Schneider), andC. stella(L

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04190.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSISTotal numbers and distribution of genera, subgenera and species were determined for the ciliate protozoa in rumen contents of 4 Brazilian water buffaloBubalus bubalisLinnaeus. The fauna of one animal, housed in close proximity to European and zebu‐type cattle, differed considerably from that of the remaining animals, which were somewhat isolated on a large ranch. Several of the protozoan species observed in the semi‐isolated animals were first described in rumen contents from humped Indian cattle, and their subsequent occurrence in other hosts and geographic locations has been limited or absent. In all, 49 different species of protozoa were found, 8 of which have not been previously described. Three of the new species belong to the genusEntodinium: E. ciculumsp. n.,E. spinonucleatumsp. n. andE. triangulumsp. n.: 4 toDiplodinium (Ostracodinium): D. (O.) brazilisp. n.,D. (O.) esalqumsp. n.,D. (O.) nucleolobumsp. n., andD. (O.) tietesp. n.; and one toDiplodinium (Eudiplodinium): D. (E.) bubalussp

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04191.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSISExamination of stained specimens (protargol and nigrosinbutanol) of hypotrich ciliates during division allows understanding of morphogenesis of buccal structures and cirri. Midventral, frontal, and transverse cirri in both proter and opisthe ofUrostyla marinadifferentiate from a longitudinal series of numerous oblique ciliary streaks in a manner similar to that ofBakuella, Holosticha, Keronopsii. Pseudourostyla, andUroleptus. This pattern differs markedly from that inAmphisiella, Kahliella, Paraholosticha, andParaurostyla, in which the fronto‐ventral and transverse cirri arise from a series of fewer (2–5) ciliary streaks in a longitudinal or fan‐like array. Rows of marginal cirri inU. marinaarise independently, as inUrostyla grandis. On the basis of comparisons of both structural and morphogenetic features of this and other hypotrichs, the family Urostylidae is redefined to containUrostyla(type),Bakuella, Holosticha, Keronopsis, Pseudourostyla, andUroleptus. Other genera formerly contained in the families Holostichidae and Urostylidae are placed in synonymy, assigned to other families, or held in uncertain familial relationship pending their rediscovery and further investig

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04192.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

Scholtyseck, E. Fine Strirctirre of Parasitic Protoxm. An Atlas of Microgruphs, Druwings und Diagrams.

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04193.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSISThe ethanolic phosphotungstic acid (PTA) technic was used to detect, at the fine‐structural level, basic proteins in various developmental stages of pathogenicTrypanosoma cruzi, and nonpathogenicHerpetomonas samuelpessoai, Leptomonas samueli, andCrithidia deanei, trypanosomatids. Reactions were observed in the nucleus of all stages. In the kinetoplast of epimastigote and promastigote forms reactions were noted mainly at the periphery. In trypomastigotes and choanomastigotes forms, however, an intense reaction was observed throughout the kinetoplast. Reactions were present in cytoplasmic vesicles related to protein storage inT. cruziand in membrane‐bounded peroxisome‐like organelles ofH. samuelpessoai, L. samueliandC. deanei. The network of filaments which forms the paraxial rod did not react. In the flagellum, reaction was noted only at the peripheral doublet microtubules. PTA reacts also with structures related to the junction between the flagellar and cell body memb

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04194.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSISThe course ofTrypanosoma congolenseinfections inGlossina morsitans morsitanswas followed by electron‐microscopic examination of ultrathin sections of the guts and proboscises of infected flies. Guts dissected from flies 7 days after infection with culture procyclic forms ofT. congolensehad heavy trypanosome infections in the midgut involving both the endo‐ and ectoperitrophic spaces. Trypanosomes were also seen in the process of penetrating the fully formed peritrophic membrane in the central region of the midgut. By post infection day 21, trypanosomes had reached the proboscis of the fly and were found as clumps of epimastigote forms attached to the labrum by hemidesmosomes between their flagella and the chitinous lining of the food canal. Desmosome connections were observed between the flagella of adjacent epimastigotes. Flies examined at postinfection days 28 and 42 had, in addition to the attached forms in the labrum, free forms in the hypophar

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04195.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSISTwo isolates of the thraustochytridUlkenia amoeboidea(Bahnweg&Sparrow) were obtained from the North Sea. In both isolates, the limax ameba liberated from the thallus rapidly assumed a nematode‐like shape and movement characteristic of several sporozoan trophozoites. On rounding up, it underwent repeated binary fission and produced biflagellate zoospore

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04196.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSISThe structure and gliding movement ofGregarina garnhamiCanning, a eugregarine found in the midgut of the desert locust,Schistocerca gregaria, have been studied by light microscopy and transmission and scanning electron microscopy (EM). Ultrastructural studies revealed that the cytoplasm ofG. garnhamiis separated from the epicyte folds by a basal lamina. The pellicle consists of 3 membrane layers. At the tips of the epicyte folds there are 2 sets of longitudinally oriented filaments. An ectoplasmic network is present in the ectoplasm and the endoplasm contains numerous paraglycogen granules. The effect of cytochalasin B onG. garnhamiwas studied. Examination of scanning EM preparations of gliding and stationary gregarines yielded inconclusive results. In some instances the epicyte folds were thrown into waves; in others the folds were straight, regardless of treatment before fixation.Gregarina garnhamiglides through its environment without any apparent deformation in shape. As it moves, a mucus trail is left behind it. Phase‐contrast observations were made of centrifuged gregarines in which the endoplasm was displaced. Centrifuged gregarines continued to glide. Displacement of the endoplasm allows visualization of the epicyte folds in gliding animals. No lateral waves were seen in the epicyte folds of gliding centrifuged animal

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04197.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY