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Table 2 Mortality rate between January 2014 and April 2016 in C. perspicillata colony

From: Yersinia pseudotuberculosis serotype O:1 infection in a captive Seba’s short tailed-fruit bat (Carollia perspicillata) colony in Switzerland

Month

Newborn

Young

Adult

Unknown

Total

Coefficient

t-value

Jan 14

 

2

1

 

3

−0.192

− 0.122

Feb 14

 

1

1

 

2

− 1.446

− 0.916

Mar 14

 

4

4

 

8

4.907

3.106

Apr 14

 

1

  

1

−2.358

−1.493

May 14

 

1

  

1

−2.137

−1.353

Jun 14

1

1

 

1

3

−0.402

−0.255

Jul 14

2

2

2

3

9

5.73

3.627

Aug 14

 

2

2

 

4

0.465

0.295

Sep 14

  

4

 

4

0.642

0.406

Oct 14

1

1

2

1

5

1.73

1.095

Nov 14

 

1

2

 

3

−0.314

−0.199

Dec 14

 

1

2

 

3

−0.137

−0.087

Jan 15

1

   

1

−2.137

−1.353

Feb 15

 

1

  

1

−2.182

−1.381

Mar 15

 

2

2

 

4

0.907

0.574

Apr 15

  

1

1

2

−1.137

−0.72

May 15

    

0

−3.182

−2.014

Jun 15

 

1

2

 

3

−0.049

− 0.031

Jul 15

  

2

 

2

−1.137

−0.72

Aug 15

  

1

 

1

−2.137

−1.353

Sep 15

 

1

1

 

2

−1.137

−0.72

Oct 15

  

3

 

3

−0.358

−0.227

Nov 15

 

2

1

4

7

3.818

2.417

Dec 15

  

2

 

2

−1.491

−0.943

Jan 16

1

 

3

1

5

1.686

1.067

Feb 16

 

1

5

 

6

2.642

1.672

Mar 16

 

3

1

 

4

0.686

0.434

Apr 16

1

1

  

2

−1.281

−0.81

  1. The coefficients and t-values of the outliers’ detection analysis was performed only on the total number of dead bats. The critical value was set at 3.5 and significant t-value (July 2014) is in bold. This finding was attributed to an ongoing birth peak in combination with increased stress due to an unusually high number of visitors
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BMC Veterinary Research

ISSN: 1746-6148

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