Molecular epidemiology of Cryptosporidium spp. in dairy cattle in Guangdong Province, South China

Parasitology ◽  
2018 ◽  
Vol 146 (1) ◽  
pp. 28-32 ◽  
Author(s):  
Nan Liang ◽  
Yayun Wu ◽  
Mingfei Sun ◽  
Yankai Chang ◽  
Xuhui Lin ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
South China ◽  
Guangdong Province ◽  
Common Species ◽  
Infection Rates ◽  
Genetic Population ◽  
Cryptosporidium Andersoni ◽  
First Time ◽  
Cattle Farms ◽  
Prevalent Species

AbstractTo determine the prevalence of Cryptosporidium in dairy cattle in Guangdong Province, South China, 1440 fecal samples were collected from 10 farms and screened for Cryptosporidium with PCR. The overall prevalence of Cryptosporidium was 4.38% (63/1440), and the infection rates in preweaned calves, postweaned calves, heifers and adults were 6.4% (19/297), 6.19% (33/533), 1.48% (4/271) and 2.06% (7/339), respectively. Three Cryptosporidium species, Cryptosporidium andersoni (n = 33), Cryptosporidium bovis (n = 22) and Cryptosporidium ryanae (n = 8) were detected by DNA sequence analysis of the 63 positive samples, and C. andersoni was identified as the most common species on the dairy cattle farms. In preweaned calves, C. bovis was the most prevalent species (9/19, 47.4%). In contrast, C. andersoni was the predominant species (19/33, 57.6%) in postweaned calves and the only species found in heifers and adults. The zoonotic species Cryptosporidium parvum was not detected in this study. Twenty-four C. andersoni isolates were successfully classified into three multilocus sequence typing (MLST) subtypes. MLST subtype A4,A4,A4,A1 was the predominant subtype, and MLST subtype A2,A5,A2,A1, previously found in sheep, was detected in cattle for the first time. A linkage disequilibrium analysis showed that the C. andersoni isolates had a clonal genetic population structure. However, further molecular studies are required to better understand the epidemiology of Cryptosporidium in Guangdong.

scholarly journals An abattoir-based study on helminthes of slaughtered goats (Capra hircus L., 1758) in upper Egypt, Egypt

2014 ◽  
Vol 51 (1) ◽  
pp. 67-72 ◽  
Author(s):  
I. Elshahawy ◽  
A. Metwally ◽  
D. Ibrahim
Keyword(s):  
Haemonchus Contortus ◽  
Fasciola Gigantica ◽  
Capra Hircus ◽  
Infection Rates ◽  
Gastrointestinal Helminths ◽  
Cysticercus Tenuicollis ◽  
Gastrointestinal Helminth ◽  
Liver Flukes ◽  
First Time ◽  
Prevalent Species

Abstract The present study describes the occurrence of various gastrointestinal helminths and liver flukes in goats from post mortem examinations performed between 2010 and 2011. Forty five adult goats were euthanized necropsy examination and for identification of adult gastrointestinal helminths and liver flukes. Eleven animals (24.44 %) were found to be infected with one or more species of gastrointestinal helminth. Haemonchus contortus emerged as the most prevalent species (15.5 %), with Moniezia expansa and Fasciola gigantica also being common (11.11 % and 4.4 %, respectively). Additionally, Haemonchus longistipes, Cysticercus tenuicollis, and Paramphistomum microbothrium were present at low infection rates (2.2 %). Mixed infections were similarly most prevalent. Haemonchus longistipes; the most pathogenic Strongyle nematode of camels was reported for the first time infecting goats in Egypt. The present study indicates that abattoir surveys would reveal the prevalence of various species of problematic helminths, and thus appropriate measures can be adopted to control the respective worms.

The revision of lichens, lichenicolous and non-lichenized fungi from the Vodlozersky National Park (Republic of Karelia, Russia) in the Herbarium of the Botanical Museum, University of Helsinki

2019 ◽  
Vol 53 (2) ◽  
pp. 337-348
Author(s):  
V. N. Tarasova ◽  
T. Ahti ◽  
O. Vitikainen ◽  
A. V. Sonina ◽  
L. Myllys
Keyword(s):  
National Park ◽  
Common Species ◽  
Lichenized Fungi ◽  
Herbarium Specimens ◽  
Lichenicolous Fungi ◽  
Biogeographic Province ◽  
Botanical Museum ◽  
The Republic ◽  
First Time ◽  
Lichen Flora

This is a report of a revision of 565 herbarium specimens of lichens, lichenicolous or non-lichenized fungi and additional locality records of common species produced from a visit of the Russian-Finnish expedition to Vodlozersky National Park right after its foundation in 1991. The analyzed collection and field records represent the earliest information about the lichen flora of the territory of the park. In total, 177 species are listed including 173 lichens, 3 non-lichenized and 1 lichenicolous fungi. Xylographa rubescens is new to the Republic of Karelia. Twenty two species are reported for the first time for biogeographic province Karelia transonegensis; 47 species for the Karelian part of Vodlozersky National Park; and 17 species for the whole territory of the park.

scholarly journals Molecular Detection and Phylogeny of Anaplasmaphagocytophilum and Related Variants in Small Ruminants from Turkey

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 814
Author(s):  
Münir Aktaş ◽  
Sezayi Özübek ◽  
Mehmet Can Uluçeşme
Keyword(s):  
16S Rrna ◽  
Small Ruminants ◽  
Rrna Gene ◽  
Infection Rates ◽  
Sheep And Goats ◽  
Significant Difference ◽  
Pcr Rflp ◽  
First Time ◽  
Japan And China ◽  
Apparently Healthy

Anaplasma phagocytophilum causes tick-borne fever in small ruminants. Recently, novel Anaplasma variants related to A. phagocytophilum have been reported in ruminants from Tunisia, Italy, South Korea, Japan, and China. Based on 16S rRNA and groEL genes and sequencing, we screened the frequency of A. phagocytophilum and related variants in 433 apparently healthy small ruminants in Turkey. Anaplasma spp. overall infection rates were 27.9% (121/433 analyzed samples). The frequency of A. phagocytophilum and A. phagocytophilum-like 1 infections was 1.4% and 26.5%, respectively. No A. phagocytophilum-like 2 was detected in the tested animals. The prevalence of Anaplasma spp. was comparable in species, and no significant difference was detected between sheep and goats, whereas the prevalence significantly increased with tick infestation. Sequencing confirmed PCR-RFLP data and showed the presence of A. phagocytophilum and A. phagocytophilum-like-1 variant in the sampled animals. Phylogeny-based on 16S rRNA gene revealed the A. phagocytophilum-like 1 in a separate clade together with the previous isolates detected in small ruminants and ticks. In this work, A. phagocytophilum-like 1 has been detected for the first time in sheep and goats from Turkey. This finding revealed that the variant should be considered in the diagnosis of caprine and ovine anaplasmosis.

scholarly journals Survey of perceptions and attitudes of an international group of veterinarians regarding antibiotic use and resistance on dairy cattle farms

2021 ◽  
Vol 188 ◽  
pp. 105253
Author(s):  
Sebastian G. Llanos-Soto ◽  
Neil Vezeau ◽  
Michelle Wemette ◽  
Ece Bulut ◽  
Amelia Greiner Safi ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Antibiotic Use ◽  
International Group ◽  
Perceptions And Attitudes ◽  
Cattle Farms

Influence on the implementation of biosecurity measures in dairy cattle farms: Communication between veterinarians and dairy farmers

2021 ◽  
Vol 190 ◽  
pp. 105329
Author(s):  
Sebastián Moya ◽  
Kin Wing (Ray) Chan ◽  
Stephen Hinchliffe ◽  
Henry Buller ◽  
Josep Espluga ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Dairy Farmers ◽  
Cattle Farms

Spatiotemporal computing of cold wave characteristic in recent 52 years: a case study in Guangdong Province, South China

2015 ◽  
Vol 79 (2) ◽  
pp. 1257-1274 ◽  
Author(s):  
Wei Liu ◽  
Si-yu Huang ◽  
Dan Li ◽  
Chong-yang Wang ◽  
Xia Zhou ◽  
...  
Keyword(s):  
South China ◽  
Guangdong Province ◽  
Cold Wave ◽  
Wave Characteristic

A taxonomic review of the genus Physopelta (Hemiptera: Heteroptera: Largidae) from Japan, Korea, and Taiwan, with a new record of Ph. parviceps from China

Zootaxa ◽  
2021 ◽  
Vol 4951 (3) ◽  
pp. 461-491
Author(s):  
JUN SOUMA ◽  
TADASHI ISHIKAWA
Keyword(s):  
New Species ◽  
New Record ◽  
Guangdong Province ◽  
Zhejiang Province ◽  
Ryukyu Islands ◽  
Taxonomic Review ◽  
The Ryukyu Islands ◽  
Two New Species ◽  
Central Taiwan ◽  
First Time

In this paper, we revised the physopeltine genus Physopelta Amyot & Serville, 1843 (Hemiptera: Heteroptera: Largidae) from Japan, Korea, and Taiwan. Five species were recognized and diagnosed, including two new species, Ph. (Neophysopelta) lutaspidata sp. nov. from northern and central Taiwan and Ph. (N.) fusciscutellata sp. nov. from the Ryukyu Islands, Japan and Taiwan, and three known species, Ph. (N.) gutta gutta (Burmeister, 1834), Ph. (N.) parviceps Blöte, 1931, and Ph. (N.) quadriguttata Bergroth, 1894. Physopelta (Neophysopelta) fusciscutellata sp. nov., was previously regarded as either of the two species, Ph. (N.) cincticollis Stål, 1863 and Ph. (N.) parviceps, for populations from Taiwan. Previous records of Ph. (N.) cincticollis from Japan proper and Korea, and Ph. (N.) slanbuschii (Fabricius, 1787) from the Ryukyu Islands were considered as misidentifications of Ph. parviceps. A key to facilitate the identification of the five species known in Japan, Korea, and Taiwan is provided. Additionally, Ph. (N.) parviceps is recorded from China (Guangdong Province and Zhejiang Province) for the first time. 

scholarly journals Natural vertical transmission by Stegomyia albopicta as dengue vector in Brazil

2009 ◽  
Vol 69 (1) ◽  
pp. 123-127 ◽  
Author(s):  
AB. Cecílio ◽  
ES. Campanelli ◽  
KPR. Souza ◽  
LB. Figueiredo ◽  
MC. Resende
Keyword(s):  
Dengue Virus ◽  
Vertical Transmission ◽  
Dengue Vector ◽  
Infection Rates ◽  
Dengue Viruses ◽  
Stegomyia Albopicta ◽  
First Time ◽  
Minimum Infection Rate ◽  
Dengue Virus Type 2

The mosquito Stegomyia albopicta is among the most important arbovirus vectors in the world, particularly for Dengue viruses. Their natural history suggests that biologically these viruses are highly adapted to their mosquito hosts and they were most likely mosquito viruses prior to becoming adapted to lower primates and humans. As well as being maintained by transmission among susceptible humans, Dengue viruses may also be maintained by vertical transmission in mosquitoes during inter-epidemic periods. The larvae and mosquitoes of Stegomyia albopicta were used to identify the vertical transmission of the dengue virus in nature and to confirm the vectorial capacity concerning the Dengue virus type 2 infection. The minimum infection rate concerning S. albopicta infection with the Dengue virus was 1:36.45. In Brazil this was the first time that high minimum infection rates of vertical transmission of S. albopicta were detected in this species.

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