Natural infection with two genotypes of Cryptosporidium in red squirrels (Sciurus vulgaris) in Italy

被引：32

作者：

Kvac, Martin ^{[1
,2
]}

Hofmannova, Lada ^{[3
]}

Bertolino, Sandro ^{[4
]}

Wauters, Luc ^{[5
]}

Tosi, Guido ^{[5
]}

Modry, David ^{[1
,3
]}

机构：

[1] Acad Sci Czech Republ, Ctr Biol, Inst Parasitol, Ceske Budejovice 37050, Czech Republic

[2] Univ S Bohemia Ceske Budejovice, Fac Agr, Ceske Budejovice 37050, Czech Republic

[3] Univ Vet & Pharmaceut Sci, Dept Parasitol, Brno 61242, Czech Republic

[4] Univ Turin, DIVAPRA Entomol & Zool, I-10095 Grugliasco, TO, Italy

[5] Univ Insubria, Dept Environm Hlth Safety, I-21100 Varese, Italy

来源：

FOLIA PARASITOLOGICA | 2008年 / 55卷 / 02期

关键词：

Cryptosporidium; 18S rRNA; oocyst morphology; infectivity; Sciurus vulgaris; red squirrel;

D O I：

10.14411/fp.2008.012

中图分类号：

R38 [医学寄生虫学]; Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ; 100103 ;

摘要：

We investigated the genotypes of Cryptosporidium infecting red squirrels (Sciurus vulgaris L.) in two areas of the Western Alps in Italy. Examination of 141 faecal samples from 70 red squirrels revealed, oocysts of Cryptosporidium in 17 animals (24.3%). Based on 18S rRNA gene sequencing, two genotypes of Cryptosporidium species were found: 15 squirrels were positive for the Cryptosporidium ferret genotype and 2 for the Cryptosporidium chipmunk genotype I. The occurrence and intensity of Cryptosporidium infection did not differ between the study areas or sex. More than 85% of the positive animals were adults; however no difference was found between Cryptosporidium infection in the juvenile and adult age groups. Oocysts of the Cryptosporidium ferret genotype measured 5.5 +/- 0.3 x 5.2 +/- 0.2 mu m (shape index 1.06) and the Cryptosporidium chipmunk genotype 15.8 +/- 0.3 x 5.4 +/- 0.3 mu m (shape index 1.07). Neonatal and adult CD1 and BABL/c mice inoculated with 1 x 10(3) fresh oocysts of both genotypes did not produce detectable infection.

引用

页码：95 / 99

页数：5

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