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Epidemiology of white spot syndrome ...

Soto, M. Andres.

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Epidemiology of white spot syndrome virus (WSSV) and Taura syndrome virus (TSV) in some penaied shrimps.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Epidemiology of white spot syndrome virus (WSSV) and Taura syndrome virus (TSV) in some penaied shrimps./
作者:	Soto, M. Andres.
面頁冊數:	93 p.
附註:	Source: Dissertation Abstracts International, Volume: 62-05, Section: B, page: 2163.
Contained By:	Dissertation Abstracts International62-05B.
標題:	Biology, Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3013773
ISBN:	0493241515

Epidemiology of white spot syndrome virus (WSSV) and Taura syndrome virus (TSV) in some penaied shrimps.
Soto, M. Andres.

Epidemiology of white spot syndrome virus (WSSV) and Taura syndrome virus (TSV) in some penaied shrimps. - 93 p.

Source: Dissertation Abstracts International, Volume: 62-05, Section: B, page: 2163.

Thesis (Ph.D.)--The University of Southern Mississippi, 2001.

An epidemiology model was used to study factors that affect the likelihood and characteristics of shrimp viral epizootics. A method was presented for testing the negative binomial distribution that allows for identifying differences in hosts' dispersion pattern that may affect pathogen introductions. Differences in dispersion pattern were observed in wild penaeid shrimp populations (<italic>Farfantepenaeus aztecus, F. duorarum</italic>, and <italic>Litopenaeus setiferus</italic>) of the Gulf of Mexico.

ISBN: 0493241515Subjects--Topical Terms:

1017726
Biology, Ecology.

Epidemiology of white spot syndrome virus (WSSV) and Taura syndrome virus (TSV) in some penaied shrimps.
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245 1 0 $a Epidemiology of white spot syndrome virus (WSSV) and Taura syndrome virus (TSV) in some penaied shrimps.
300 $a 93 p.
500 $a Source: Dissertation Abstracts International, Volume: 62-05, Section: B, page: 2163.
500 $a Director: Jeffrey M. Lotz.
502 $a Thesis (Ph.D.)--The University of Southern Mississippi, 2001.
520 $a An epidemiology model was used to study factors that affect the likelihood and characteristics of shrimp viral epizootics. A method was presented for testing the negative binomial distribution that allows for identifying differences in hosts' dispersion pattern that may affect pathogen introductions. Differences in dispersion pattern were observed in wild penaeid shrimp populations (<italic>Farfantepenaeus aztecus, F. duorarum</italic>, and <italic>Litopenaeus setiferus</italic>) of the Gulf of Mexico.
520 $a An experimental protocol was developed based on an epidemiology model to study the transmission, virulence, and recovery rates of white spot syndrome virus (WSSV) and Taura syndrome virus (TSV). I compared: (1) two modes of transmission for WSSV and <italic>Litopenaeus vannamei</italic> (cohabitation vs. ingestion of infected cadavers); (2) the ingestion transmission of WSSV to <italic>L. vannamei</italic> and <italic>L. setiferus</italic>; (3) the transmission of <italic>L. vannamei</italic> (Kona stock) from exposures to WSSV and TSV. In addition, the virulence and recovery rates of WSSV and TSV to <italic>L. vannamei</italic> and of WSSY to <italic>L. setiferus</italic> were compared.
520 $a The cohabitation transmission estimate was 0.01, and of ingestion transmission was much larger (0.46) suggesting that cohabitation is a much less important mode of transmission for WSSV. A statistically significant difference was detected between the estimates of ingestion transmission of <italic>L. vannamei </italic> (0.46) and <italic>L. setiferus</italic> (0.84), yet no differences in the virulence or recovery rates were detected between hosts. The estimated virulence rate was 0.34, and the recovery rate from a WSSV infection was 0.007 for both species. For the TSV and WSSV exposures to <italic>L. vannamei</italic>, the transmission rate was higher for TSV (0.61) than for WSSV (0.41); the virulence rate was higher for WSSV (0.37) than TSV (0.12); and the recovery rate was higher for TSV (0.10) than for WSSV (0).
520 $a Finally the infectivity of a WSSV infected cephalothorax, abdomen, and whole shrimp was compared and assumptions of epidemiology models were tested. The results suggested that there was no difference in the viral loads of a WSSV infected cephalothorax or abdomen, but that the cephalothorax was more infectious probably because it was more palatable. In addition, the results are inconsistent with some assumptions of epidemiological models.
590 $a School code: 0211.
650 4 $a Biology, Ecology. $3 1017726
650 4 $a Agriculture, Fisheries and Aquaculture. $3 1020913
690 $a 0329
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710 2 0 $a The University of Southern Mississippi. $3 1018511
773 0 $t Dissertation Abstracts International $g 62-05B.
790 1 0 $a Lotz, Jeffrey M., $e advisor
790 $a 0211
791 $a Ph.D.
792 $a 2001
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3013773