Abstract:
BACKGROUND:Recent studies have reported that soft tunic syndrome (STS) in the edible ascidian Halocynthia roretzi is caused by the kinetoplastid parasite Azumiobodo hoyamushi. In this study, we attempted to detect and quantify the pathogen in benthic animals. METHODS:Four species of ascidians, three species of echinoderms, two species of bivalves, one species each of sponge and algae, as well as seawater, were collected in 2014 and 2015 from an ascidian farm on the southern coast of Korea by SCUBA diving. Samples were collected from ascidian hanging culture ropes or the sea bottom. Inhalent siphons were excised for the analysis of ascidians, and soft body tissues were excised from the other species. Membrane filters were used to filter collected seawater. Tissues and membrane filters were analysed using culture testing, PCR testing, and qPCR diagnoses. RESULTS:Only organisms belonging to Ascidiacea are susceptible to A. hoyamushi infection. The infection rate (% infected of the total number collected) and infection intensity (number of cells infected/g tissue wet weight) varied depending on the seasonal variation in seawater temperatures. Most ascidians examined were infected with A. hoyamushi and showed higher infection intensity in cold water seasons (April 2014 and February 2015), followed by a dramatic drop during warm water seasons (August and November, 2014). In addition, infection intensity of A. hoyamushi during the warm water period was higher in ascidians from the sea bottom than those from the hanging culture rope. CONCLUSIONS:Among benthic organisms that inhabit the southern coast of Korea, most ascidians are susceptible to A. hoyamushi infection. Seasonal cycle of infection rates and intensities of the pathogen correspond well with the STS disappearance and onset cycle observed in ascidian farms. The high intensity of A. hoyamushi infection in the ascidians on the sea bottom of ascidian farms during summer suggest further studies on the role of the pathogen in resumption of STS occurrence in late fall or early winter in the southern coast of Korea.
journal_name
Parasit Vectorsjournal_title
Parasites & vectorsauthors
Nam KW,Shin YK,Park KIdoi
10.1186/s13071-015-1179-5subject
Has Abstractpub_date
2015-11-04 00:00:00pages
569issn
1756-3305pii
10.1186/s13071-015-1179-5journal_volume
8pub_type
杂志文章abstract:BACKGROUND:Dirofilaria repens is the causative agent of subcutaneous dirofilariosis of dogs, other animals and humans. This nematode is transmitted by mosquitoes of Aedes, Anopheles and Culex genera. In dogs, the parasite may cause subclinical infection or cutaneous signs. Recently, D. repens has emerged and spread in ...
journal_title:Parasites & vectors
pub_type: 杂志文章,随机对照试验
doi:10.1186/1756-3305-7-347
更新日期:2014-07-29 00:00:00
abstract:BACKGROUND:Ixodes ricinus constitutes the main European vector tick for the Lyme borreliosis pathogen Borrelia burgdorferi (sensu lato), the relapsing fever borrelia Borrelia miyamotoi, as well as Anaplasma phagocytophilum and several Rickettsia species. Under laboratory conditions, a transovarial transmission to the n...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-020-04049-7
更新日期:2020-04-07 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-016-1638-7
更新日期:2016-07-08 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-019-3610-9
更新日期:2019-07-18 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-019-3706-2
更新日期:2019-09-11 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1186/s13071-018-3096-x
更新日期:2018-10-10 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-016-1810-0
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journal_title:Parasites & vectors
pub_type: 杂志文章
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更新日期:2018-03-20 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-016-1838-1
更新日期:2016-10-19 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-7-398
更新日期:2014-08-28 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-018-2633-y
更新日期:2018-03-09 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-015-1203-9
更新日期:2015-11-14 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-7-253
更新日期:2014-05-30 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-018-2665-3
更新日期:2018-02-02 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Parasites & vectors
pub_type: 杂志文章
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更新日期:2019-04-11 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
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更新日期:2021-01-25 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-4-77
更新日期:2011-05-14 00:00:00
abstract:BACKGROUND:Resistance to chemical insecticides plus high morbidity rates have lead to rising interest in fungi as candidates for biocontrol agents of mosquito vectors. In most studies fungal infections have been induced by exposure of mosquitoes to various surfaces treated with conidia. In the present study eight Mexic...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-4-24
更新日期:2011-02-26 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
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更新日期:2014-05-14 00:00:00
abstract:BACKGROUND:Genetic information for Toxoplasma gondii isolates from pigs in eastern, south, and southwestern regions of China has been reported previously. However, there are no data from pigs in the northeastern area of the country. To better understand the epidemiology of T. gondii, we determined the seroprevalence an...
journal_title:Parasites & vectors
pub_type: 杂志文章
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更新日期:2016-04-29 00:00:00
abstract:BACKGROUND:Rhipicephalus microplus is a hard tick that has a major impact on cattle health in tropical and subtropical regions because it feeds on cattle and is implicated in the transmission of pathogens that cause diseases such as bovine anaplasmosis and babesiosis. Presently, acaricides are used to control tick infe...
journal_title:Parasites & vectors
pub_type: 杂志文章
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更新日期:2017-03-23 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-016-1965-8
更新日期:2017-01-13 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
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更新日期:2017-01-03 00:00:00
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pub_type: 杂志文章
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