ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04631.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSIS.Structure of Trypanoplasma beckeri sp. n. from the cabezon,Scorpaenichthys marmoratus(Ayres), is described from living specimens and from both Giemsa‐, and protargol‐stained smears. Flagellates from fish blood were usually long and slender, averaging 109.0 × 6.5 fan. The anterior flagellum averaged 8.5 μm; the recurrent flagellum bordered the body and terminated as a very short free flagellum, 2.5 μm long on the average. No true undulating membrane was observed, but in living individuals the recurrent flagellum undulated rapidly near its point of origin. The oval nucleus, averaging 8.5 × 4.0 μm, was located near the anterior cad of the body. An argentophilic, aciculum‐like structure appeared to connect the nucleus to the area at the base of the flagella. The kinetoplast was not observed in fish blood forms. On the basis of laboratory experiments, the leech,Malmiana diminutaBurreson, was ascertained to be the vector forT. beckeri.Upon entry into the leech, flagellates became rounded, and division commenced within a few hours. Division continued for ˜48 h and the flagellates became progressively smaller until reaching a length of ˜10.0 μm. After 72 h they were found in high numbers in the proboscis sheath and also in the anterior crop of the leech. When infected leeches fed on an uninfected fish, flagellates were first observed in the fishes’ peripheral circulati

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04632.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSIS.Phytomonas stahelisp. n. is described from the oil palm (Elaeis guineensis) and the coconut palm (Cocos nucifera) of Surinam, South America. The phytomonad is the probable cause of “Hartrot” in the coconut palm and “Marchitez sopresiva” in oil palms. Parasites are confined to the sieve tubes in palms. Some success was obtained at cultivation of the organism fro

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04633.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSIS.Trypanosoma (Megatrypanum) megachiropterorumsp. n. from the flying fox,Pteropus tonganusQuoy&Gaimard, from the Kingdom of Tonga, is described. The trypomastigotes measure 32 ± 1.74 (here and below S.D.) (27–37.5) × 3.6 ± 0.23 (3–4.5) μm and has a flagellum averaging in length 6.4 ± 0.92 (4.5–10) μm. Their nuclear index is 1.2 ± 0.16 (0.7–1.6) and their kinetoplastic index equals 6.2 ± 0.32 (5.5–7.1). This is the first report of a member of the subgenusMegatrypanumfrom bats outside the American and African continents and also the first record of a trypanosome from bats in

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04634.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSIS.Oocysts ofEimeria filamentiferasp. n. were isolated from 2 of 2 snapping turtles,Chelydra serpentina(Linné), in Iowa. The ovoid to ellipsoid oocysts of this species averaged 23.2 × 18.6 μm and had a length/width ratio ranging from 1.1 to 1.6. The ellipsoid sporocysts averaged 14.0 × 7.7 μm and had papillose, filament‐bearing Stieda bodies. Oocyst and sporocyst residua were present, but micropyle and polar granule were not. This appears to be the 2nd species ofEimeriareported from snapping turtles, withE. chelydraebeing the

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04635.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSIS.A new species of neogregarine,Mattesia geminatasp. n., that infects immature stages of the tropical fire ant,Solenopsis geminata(Fabricius), is described. The parasite, which develops in the hypodermis, causes disruption of the developing eyes, melanization of the cuticle, and death of pupae. lntracolonial infection rates are usually less than 2±, but may exceed 90±. Attempts to transmit the infection were unsuccessfu

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04636.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSIS.It is evident from a survey of the Russian literature that many species of avian haematozoa recorded do not meet the basic criteria required by the International Code of Zoological Nomenclature. Thus 28 species ofHaemoproteusand 4 species ofLeucocytozoonare considered to benomina nuda, while 1 species,Leucocytozoon turtur orientalisis a synonym ofL. marchouxi.

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04637.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSIS.Several taxonomic problems arising from recent revisions of the phylum Ciliophora. Initially, electro‐ and light‐microscopic features of 7 species from 4 genera of colpodid ciliates were analyzed by several numerical phenetic procedures. The phenogram derived by using Jaccard's coefficient as the measure of similarity and the unweighted pair‐group arithmetic clustering method (UPGMA) yielded a classification with the highest cophenetic correlation coefficient.Subsequently, relationships among 22 oligohymenophoran and related genera were determined by analyzing 57 ultrastructural and light‐microscopic features with Jaccard's coefficient and UPGMA. On the basis of these results, the suborder Peniculina is elevated to ordinal rank and the family Turaniellidae is transferred from the Peniculida to the Tetrahymenina. The phenogram also indicated that the nassuline ciliates may be allied with the OLIGOHYMENOPHORA rather than the KINETOFRAGMI

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04638.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSIS.First‐generation schizogony ofEimeria bovisin bovine cell culture was studied by electron microscopy. The intracellular sporozoite retained its structure for at least 6 days at which time it rounded up and lost its apical complex. Although the refractile body underwent certain morphologic changes, it was retained throughout the parasite's growth. The beginning of mitosis was marked by the formation of a cytoplasmic funnel which traversed the nucleus opening on each side toward a pair of centrioles. Subsequently, there developed an intranuclear spindle. Separation of the daughter nuclei was preceded by the formation of typical centrocones. Differentiation of merozoites was accomplished by exogenesis during the last mitotic division. A dense fiber, interpreted as a link connecting the merozoite anlage with its nucleus, extended from the developing apical complex to the nearest division pole. In the anlage, the inner membrane complex was at first composed of patches associated with pairs of subpellicular microtubules. Rhoptries appeared early in merogenesis, whereas micronemes formed at the time the merozoites detached from the residuum. The level of amylopectin, low in schizonts, rose at the beginning of merozoite formatio

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04639.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

SYNOPSIS.Gamogony ofTheileria ovisRodhain occurs within the gut of nymphs of the tickRhipicephalus evertsi evertsiNeumann. After molting, spherical and ovoid parasites are found within the intestinal cells of the ticks. These stages are thought to be zygotes, because they undergo a transformation process leading ultimately (in 3 days) to the formation of a motile stage, thekinete, the fine structure of which is very similar to that of the ookinetes of the hemosporidia. The kinete leaves the gut cells of the tick and penetrates the salivary gland cells where it produces infective stages (thesporozoites). These stages may be transmitted to sheep during the next blood meal of the tick. The developmental processes ofT. ovisare compared to those of Hemosporina.

ISSN:0022-3921    

DOI:10.1111/j.1550-7408.1979.tb04640.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY