scholarly journals Some mites of Yemen collected by the Medical Mission of the United States Naval Medical Research Unit No.3. / Charles D. Radford.

Author(s):  
Charles D Radford
Parasitology ◽  
1955 ◽  
Vol 45 (1-2) ◽  
pp. 128-130 ◽  
Author(s):  
Don R. Arthur

In January 1954 I received from Dr Harry Hoogstraal of the United States Naval Medical Research Unit no. 3, Cairo, Egypt, a collection of ticks for investigation. In the monograph of Nuttall, Warburton, Cooper & Robinson (1911) these specimens were run down to Ixodes ugandanus Neumann, but in view of the constant differences between them I recognize the present material as a new species. I assign the name hoogstraali to them in consideration of Harry Hoogstraal's kindness and generosity in supplying me with tick material. Unfortunately the entire collection consists of females.


2014 ◽  
Vol 19 (1) ◽  
pp. 28-34 ◽  
Author(s):  
Bonventure W. Juma ◽  
Meshack Wadegu ◽  
Albina Makio ◽  
Ronald Kirera ◽  
Fredrick Eyase ◽  
...  

Parasitology ◽  
1952 ◽  
Vol 42 (1-2) ◽  
pp. 126-135 ◽  
Author(s):  
B. Jobling

The description of one new species of Ascodipteron and another one of Nycteribosca is based on the material collected in Africa and Madagascar respectively by Mr H. Hoogstraal, of the United States Naval Medical Research Unit No. 3. These specimens represent a part of the collection which was sent to me for identification by Mr R. L. Wenzel of the Chicago Natural History Museum. In this paper I have also included the description of another new species of Ascodipteron of which two specimens were collected by Mr T. S. Jones in West Africa.


Plant Disease ◽  
2011 ◽  
Vol 95 (12) ◽  
pp. 1586-1586 ◽  
Author(s):  
D. Berner ◽  
C. Cavin ◽  
Z. Mukhina ◽  
D. Kassanelly

Black swallow-wort, Vincetoxicum nigrum (L.) Moench (= Cynanchum louiseae Kartesz & Gandhi), and pale swallow-wort, V. rossicum (Kleopow) Borhidi (= Cynanchum rossicum (Kleopow) Borhidi), are invasive plants belonging to the family Apocynaceae and are the targets of biological control efforts to control their spread in the United States. In 2010, a disease on a related species, V. scandens Sommier & Levier, was observed in the Krasnodar area of Russia. Disease symptoms were many small, dark red-to-purple leaf spots, approximately 2 to 5 mm in diameter, with white centers. Leaf spots were found on the upper leaf surface. Leaf tips and margins of leaves bearing many of these spots were necrotic. Symptomatic leaves were collected and sent to the BSL-3 containment facility at the Foreign Disease-Weed Science Research Unit (FDWSRU) of the USDA, ARS in Frederick MD. Surface-disinfested symptomatic leaves were incubated at 20 to 25°C in sterile moist chambers. After several days, acervuli and brown setae were observed inside the leaf spots. Pure cultures, designated FDWSRU 10-002, were obtained by transferring spore masses with sterile glass needles onto 20% V8 juice agar. Seeds of V. scandens, collected in Russia, were placed in a freezer at –20°C for 6 weeks and then germinated in sterile petri plates on moist filter paper. The seedlings were then transplanted and grown in a 20°C greenhouse under 12 h of light. Koch's postulates were fulfilled as follows: 2-month-old plants each of V. scandens, V. nigrum, and V. rossicum were inoculated with spores from 2-week-old cultures of isolate 10-002. Plants were inoculated by spraying an aqueous suspension of 106 spores per ml onto each plant until all leaves were wet. Plants were placed in 20 to 24°C dew chambers for 18 h and then placed in a 20°C greenhouse. Two weeks later, diseased leaves with the same symptoms observed in the field were harvested from each species, and the fungus was reisolated from seven of seven inoculated V. scandens plants, one of two V. nigrum plants, and four of four V. rossicum plants. Measurements of fungus fruiting structures were taken from cultures grown on synthetic nutrient-poor agar (SNA) (1). Conidiophores were brown, septate, and branched. Conidia were one-celled, hyaline, smooth walled, ovoid to oblong, falcate, and 20.1 to 26.2 × 1.7 to 3.6 μm (mean ± s.d. = 23.5 ± 1.3 × 2.6 ± 0.4 μm). Lengths of the conidia conformed to the description of Colletotrichum lineola Corda (1), but the conidia were slightly narrower than described. To induce appressoria formation, approximately 104 conidia were placed on sterile dialysis membranes on top of SNA in petri dishes that were wrapped in foil and incubated at 24°C for 24 h. After this time, appressoria were observed with a microscope at ×400 magnification. The appressoria were dark brown, smooth walled, ellipsoidal, and 5.5 to 25.5 × 3.6 to 12.1 μm (mean ± s.d. = 13.4 ± 4.0 × 7.3 ± 2.1 μm), which conformed to the description of appressoria of C. lineola Corda (1). DNA sequences of ITS1, 5.8S, and ITS2 were submitted to GenBank (No. HQ731491), and after BLAST analysis, aligned 100% to 15 previously identified isolates of C. lineola in GenBank. Voucher specimens of the fungus have been deposited in the U.S. National Fungus Collection and were designated as BPI 881105 and BPI 881106. Host range and efficacy tests are planned to determine the suitability of C. lineola for biological control of swallow-worts in the United States. Reference: (1) U. Damm et al. Fungal Divers. 39:45, 2009.


2019 ◽  
Vol 25 (8) ◽  
pp. 1198-1204 ◽  
Author(s):  
Jean-Christophe Bélisle-Pipon ◽  
Effy Vayena ◽  
Robert C. Green ◽  
I. Glenn Cohen

2019 ◽  
Vol 34 (3) ◽  
pp. 429-434 ◽  
Author(s):  
Deepa V. Cherla ◽  
Cristina P. Viso ◽  
Julie L. Holihan ◽  
Karla Bernardi ◽  
Maya L. Moses ◽  
...  

Parasitology ◽  
1972 ◽  
Vol 64 (2) ◽  
pp. 235-244
Author(s):  
Gerald D. Schmidt ◽  
Robert E. Kuntz

Cordonema gen.nov. is proposed for C. venusta sp.nov. (type species), C. longifuniculata (Sobolev, 1952) comb.nov. and C. solonitzini (Sobolev, 1943) comb.nov. The genus differs from Skrjabinoclava Sobolev, 1943, in lacking laterally directed loops of the cordons. Cordonema venusta sp.nov. from Cinclus pallasi from Taiwan, differs from Cordonema longifuniculata in its spicule ratio of 4:1 compared to 2:1. It differs from C. solonitzini in having longer cordons in proportion to body size and in spicule ratio, which is 2:1 in C. solonitzini.Skrjabinoclava cincli (Yamaguti, 1935) Sobolev, 1943, is redescribed from males and females from the type host, Cinclus pallasi, from Taiwan. Skrjabinoclava decorata (Solonitzin, 1928) Sobolev, 1943, is redescribed from Lonchura fuscans from Borneo.Skrjabinoclava rallae sp.nov. from Rallus striatus from Palawan differs from S. horrida in its spicule ratio of 4.7:1 compared with 3.6–4:1, and in the structure of the right spicule. It differs from S. cincli in having shorter cordons and spicules. Skrjabinoclava amaurornae sp.nov. from Amaurornis phoenicurus from Palawan differs from S. alii Ali, 1968, in having longer cordons, shorter pharynx, and in the absence of a sclerotized bar connecting the first spines of the lateral rows. It differs from S. cincli in having larger body spines and a right spicule of different shape.Keys to the genera in Echinuriinae and the species in Cordonema and Skrjabinovlava are included.We wish to acknowledge the field support by Dr D. S. Rabor, Department of Biology, Silliman University, Dumaguete City, Negros Oriental, Republic of the Philippines, and the technicians of the Parasitology Department of Naval Medical Research Unit No. 2 for general assistance in procurement and examination of hosts. Dr John M. Kinsella kindly read the manuscript and improved it with his advice.


Sign in / Sign up

Export Citation Format

Share Document