Studies of western tree rusts. VIII. Inoculation experiments with conifer needle rusts (Melampsoraceae)

1970 ◽  
Vol 48 (8) ◽  
pp. 1471-1476 ◽  
Author(s):  
Wolf G. Ziller
Keyword(s):  
New Host ◽  
New Information ◽  
Conifer Needle ◽  
Coleosporium Asterum

Results from 22 cross-inoculation experiments provide confirmatory and new information on broom rusts of spruce and fir (Chrysomyxa arctostaphyli Diet. and Melampsorella caryophyllacearum Schroet.) and needle rusts of pine, larch, and fir (Coleosporium asterum (Diet.) Syd., Melampsora paradoxa Diet. & Holw., Pucciniastrum epilobii Otth, Uredinopsis longimucronata Faull, U. phegopteridis Arth., and U. struthiopteridis Stoerm. ex Diet.). New host and distribution records are confirmed by inoculation. Cone rust of alpine fir is shown to be caused by Pucciniastrum epilobii. The need for further study of needle rust of pine (Coleosporium) and a monographic treatment of the willow rusts (Melampsora epitea complex) is suggested.

scholarly journals Influenza Virus Reservoirs and Intermediate Hosts: Dogs, Horses, and New Possibilities for Influenza Virus Exposure of Humans

2014 ◽  
Vol 89 (6) ◽  
pp. 2990-2994 ◽  
Author(s):  
Colin R. Parrish ◽  
Pablo R. Murcia ◽  
Edward C. Holmes
Keyword(s):  
Influenza Virus ◽  
Influenza A ◽  
Mammalian Species ◽  
Influenza Viruses ◽  
Human Populations ◽  
Intermediate Hosts ◽  
New Host ◽  
New Information ◽  
Canine Influenza ◽  
Influenza Outbreaks

Influenza A virus (IAV) infections in hosts outside the main aquatic bird reservoirs occur periodically. Although most such cross-species transmission events result in limited onward transmission in the new host, sustained influenza outbreaks have occurred in poultry and in a number of mammalian species, including humans, pigs, horses, seals, and mink. Recently, two distinct strains of IAV have emerged in domestic dogs, with each circulating widely for several years. Here, we briefly outline what is known about the role of intermediate hosts in influenza emergence, summarize our knowledge of the new canine influenza viruses (CIVs) and how they provide key new information on the process of host adaptation, and assess the risk these viruses pose to human populations.

Commensal turbellarians from Bermuda holothurians

1980 ◽  
Vol 58 (10) ◽  
pp. 1741-1744 ◽  
Author(s):  
Ronald D. Snyder
Keyword(s):  
New Species ◽  
Life Cycle ◽  
New Host ◽  
New Information ◽  
New Host Records

An investigation of some of the echinoderm fauna of the Bermuda Islands for endocommensal rhabdocoel turbellarians was conducted during June 1973 and produced new information concerning the biology of these worms. In addition to the identification of new host records for Anoplodiera voluta and Wahlia macrostylifera, a possible new species in the genus Anoplodiera is partially described, and the hitherto unreported juvenile forms of all three of these are described. During the study, nematocysts were discovered in the gut and body walls of Wahlia macrostylifera, residing in the holothurian Stichopus badionotus, representing the first account of these structures in commensal turbellarians. This finding is discussed with respect to its possible significance in an elucidation of the life cycle of these animals.

scholarly journals New records of three hippoboscid species on newly captured birds from nature in Paraná, Brazil

2016 ◽  
Vol 25 (4) ◽  
pp. 501-503 ◽  
Author(s):  
Frederico Fontanelli Vaz ◽  
Valéria Natascha Teixeira
Keyword(s):  
Host Species ◽  
New Records ◽  
The State ◽  
Athene Cunicularia ◽  
Falco Peregrinus ◽  
New Host ◽  
New Information ◽  
One Year ◽  
New Host Species

Abstract The aims of this study was to provide new records of hippoboscid flies collected over an one-year period on newly captured birds from nature in the state of Paraná, Brazil. The birds were received by a wildlife center in Tijucas do Sul and the hippoboscid flies were collect by hand or by tweezers, generating a prevalence of 0.7% (16/2232) of parasitized birds. New information about distribution of hippoboscid flies on Asio clamator, Rupornis magnirostris and Athene cunicularia was reported in the state of Paraná. The Caracara plancus, Falco peregrinus and Penelope obscura are new host species for Ornithoctona erythrocephala in the state of Paraná, and the Asio stygius for Icosta rufiventris and Ornithoica vicina in Brazil. This study provided new information about hosts and distribution of hippoboscid flies in Brazilian birds.

Nematode Parasites of Vertebrates in the Philadelphia Zoological Garden and Vicinity

Parasitology ◽  
1929 ◽  
Vol 21 (1-2) ◽  
pp. 63-102 ◽  
Author(s):  
William P. N. Canavan
Keyword(s):  
New Species ◽  
Brook Trout ◽  
Wide Distribution ◽  
Systematic Position ◽  
New Host ◽  
Nematode Parasites ◽  
New Information ◽  
New Localities ◽  
Host Parasite ◽  
Taxonomic Relations

The Helminths herein reported are of importance because of their economic and taxonomic relations. To point this out, it is only necessary to mention Haemonchus, whose relation to the Bovidae and Ovidae is equivalent to those of Necator and Ancylostoma to the human host.Some are well-known roundworms having a world-wide distribution as parasites of animals, and are listed only on account of locality and museum interest; others, especially certain rare forms from uncommon hosts, are of greater interest and are discussed more fully. Certain details, at one time thought not.to be necessary and hence neglected are added because to-day they are indispensable for specific designation.Because of the abundance of material, it has been possible to supplement accounts given by other authors and to correct some errors due, no doubt, to poor or too few specimens. Several changes in systematic position of known forms and confirmation of others are made.A new name (D. histrix) is proposed for Dirofilaria subcutanea (Linstow, 1899) Boulenger, 1920. Eustrongylides larvae, of Ciurea, J. 1924, are included under the pre-adult stage of a new species (Eustrongylides wenrichi) because both are alike and their characters fit no other known species. New information is added about Trypanoxyuris trypanuris Vevers, 1923, and Cyrnea coloni Cram, 1927, amending their descriptions.Descriptions and illustrations of seven new species in as many genera are given. They are Acuaria (Dispharynx) resticula from a groove-billed ani, Ascaridia petrensa from a partridge, Dirofilaria spinosa from a porcupine, Physaloptera multiuteri from a monkey, Subulura pennula from a quail, Spironoura procera from a terrapin, and the above-mentioned pre-adult Eustrongylides wenrichi from a stream pike, brook-trout, calico bass, sunfish, and a frog.In all there are 162 determinations in 38 genera and 56 species, including new ones, from 150 hosts involving 117 different host species.Superparasitism and significant cases of parasitism are pointed out because they are of interest to one concerned with incidence and degree of infestation. Numerous records of new host-parasite relations and new localities will be of interest to students of distribution.

scholarly journals Blood parasites in Passeriformes in central Germany: prevalence and lineage diversity of Haemosporida (Haemoproteus, Plasmodium and Leucocytozoon) in six common songbirds

PeerJ ◽  
2019 ◽  
Vol 6 ◽  
pp. e6259 ◽  
Author(s):  
Yvonne R. Schumm ◽  
Christine Wecker ◽  
Carina Marek ◽  
Mareike Wassmuth ◽  
Anna Bentele ◽  
...  
Keyword(s):  
Small Sample Size ◽  
Parasite Prevalence ◽  
Small Sample ◽  
Blood Parasites ◽  
New Host ◽  
Central Germany ◽  
New Information ◽  
Mitochondrial Cytochrome B ◽  
Pcr Targeting ◽  
Lineage Diversity

Background Avian Haemosporida are vector-borne parasites that commonly infect Passeriformes. Molecular analyses revealed a high number of different lineages and lineage specific traits like prevalence and host-specificity, but knowledge of parasite prevalence and lineage diversity in wild birds in Central Germany is still lacking. Results Blood samples from a total of 238 adult and 122 nestling songbirds belonging to six species were investigated for infections with avian haemosporidian genera and lineages (Haemoproteus spp., Plasmodium spp., Leucocytozoon spp.) and Trypanosoma avium using PCR, targeting the parasite mitochondrial cytochrome b gene and 18S ribosomal RNA. In total, the prevalence in adult birds was 31.3% infected with Haemoproteus, 12.5% with Plasmodium and 71.0% with Leucocytozoon (nestlings excluded). None of the tested birds was infected with Trypanosoma avium. Only in two nestling birds, aged 12–17 days, a Leucocytozoon spp. infection was proven. Among 225 successfully sequenced samples, we found four Haemoproteus, three Plasmodium and 19 Leucocytozoon lineages, including two new Leucocytozoon lineages. Furthermore, we report two new host-lineage associations. Conclusions As first study investigating avian haemosporidian parasites in Central Germany, we provide new information on genetic diversity of Haemosporida infecting Passeriformes. We show that even with a small sample size new lineages as well as previously unknown linkages between certain lineages and host species can be detected. This may help to elucidate the diversity of lineages as well as lineage-host-connections of avian Haemosporida.

scholarly journals Ectoparasite insects of bats from the fields and weedlands eco-region of Argentina

2020 ◽  
Vol 60 ◽  
pp. e20206064
Author(s):  
Analía Gladys Autino ◽  
Fabricio Miguel Idoeta ◽  
Guillermo Luis Claps ◽  
Rubén Marcos Barquez
Keyword(s):  
First Record ◽  
New Host ◽  
New Information

New information is presented for bats and their ectoparasite insects from the Argentine Field and Weedlands Ecoregion. Bats of the families Molossidae, Phyllostomidae and Vespertilionidae containing ectoparasites belonging to families Polyctenidae (Hemiptera), Nycteribiidae and Streblidae (Diptera) were collected. Here is presented the first record of Hesperoctenes cartus Jordan, 1922 for Argentina. Basilia plaumanni Scott, 1940 and H. vicinus Jordan, 1922 are added to the province of Misiones and Paratrichobius longicrus (Miranda Ribeiro, 1907) is added to the province of Corrientes. Additionally, the distributions of some ectoparasite insects are extended and new host-ectoparasite associations are reported.

New records of parasitic copepods (Crustacea, Copepoda) from marine fishes in the Argentinean Sea

2012 ◽  
Vol 57 (1) ◽  
Author(s):  
Cantatore Paula ◽  
Braicovich Elizabeth ◽  
Alarcos Julia ◽  
Lanfranchi Laura ◽  
Rossin Alejandra ◽  
...  
Keyword(s):  
Host Species ◽  
New Records ◽  
Marine Fishes ◽  
Marine Biota ◽  
New Host ◽  
Parasitic Copepods ◽  
Large Samples ◽  
New Information ◽  
Increasing Knowledge ◽  
New Host Records

AbstractIncreasing knowledge of the biodiversity of parasitic copepods in the Argentinean Sea will provide a baseline against which changes in the distribution of marine biota can be detected. We provide new information on the distribution of 13 known species of parasitic copepods gathered from 11 species of marine fishes from Argentinean Sea, including 7 new host records and 9 new locality records. These species are: Bomolochus globiceps (Vervoort et Ramírez, 1968) and Nothobomolochus cresseyi Timi et Sardella, 1997 (Bomolochidae Sumpf, 1871); Brasilochondria riograndensis Thatcher et Pereira, 2004 (Chondracanthidae Milne Edwards, 1840); Taeniacanthus lagocephali Pearse, 1952 (Taeniacanthidae Wilson, 1911); Caligus rogercresseyi Boxshall et Bravo, 2000 and Metacaligus uruguayensis (Thomsen, 1949) (Caligidae Burmeister, 1835); Hatschekia conifera Yamaguti, 1939 (Hatschekiidae Kabata, 1979); Clavellotis pagri (Krøyer, 1863), Clavella adunca (Strøm, 1762), Clavella bowmani Kabata, 1963 and Parabrachiella amphipacifica Ho, 1982 (Lernaeopodidae Milne Edwards, 1840), and Lernanthropus leidyi Wilson, 1922 and Lernanthropus caudatus Wilson, 1922 (Lernanthropidae Kabata, 1979). A list of host species lacking parasitic copepods, for which large samples were investigated by the authors, is also provided in order to compare in future surveys.

Lattice Imaging of Twin, Lath and α/Martensite Boundaries in Duplex Low Carbon Steels

1977 ◽  
Vol 35 ◽  
pp. 118-119
Author(s):  
J. Y. Koo ◽  
G. Thomas
Keyword(s):  
High Resolution Electron Microscopy ◽  
Ferrite Matrix ◽  
Carbon Steels ◽  
Bright Field Image ◽  
Low Carbon ◽  
Lattice Imaging ◽  
Bright Field ◽  
Lattice Image ◽  
New Information ◽  
Resolution Electron

High resolution electron microscopy has been shown to give new information on defects(1) and phase transformations in solids (2,3). In a continuing program of lattice fringe imaging of alloys, we have applied this technique to the martensitic transformation in steels in order to characterize the atomic environments near twin, lath and αmartensite boundaries. This paper describes current progress in this program.Figures A and B show lattice image and conventional bright field image of the same area of a duplex Fe/2Si/0.1C steel described elsewhere(4). The microstructure consists of internally twinned martensite (M) embedded in a ferrite matrix (F). Use of the 2-beam tilted illumination technique incorporating a twin reflection produced {110} fringes across the microtwins.

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