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Table 2 Frequency and duration of copulations in Biomphalaria pfeifferi and Biomphalaria camerunensis populations

From: Analysis of mating system, fecundity, hatching and survival rates in two Schistosoma mansoni intermediate hosts (Biomphalaria pfeifferi and Biomphalaria camerunensis) in Cameroon

Parameters

Snail species

No couples

Mean

sd of mean

Copulation frequency at first day of pairing

B. pfeifferi

15

1.9

0.7

 

B. camerunensis

15

1.9

0.7

Copulation frequency at second day of pairing

B. pfeifferi

17

2.5

0.5

 

B. camerunensis

15

1.7

0.7

Copulation frequency at third day of pairing

B. pfeifferi

17

1.2

0.7

 

B. camerunensis

15

1.0

0.7

Copulation frequency over three days of pairing

B. pfeifferi

17

6.6

1.2

 

B. camerunensis

15

4.6

1.3

Copulation duration at first day of pairing

B. pfeifferi

17

5.6

0.7

 

B. camerunensis

15

5.3

2.0

Copulation duration at second day of pairing

B. pfeifferi

17

3.8

0.9

 

B. camerunensis

15

4.1

1.6

Copulation duration at third day of pairing

B. pfeifferi

17

1.7

1.1

 

B. camerunensis

15

2.0

1.3

Copulation duration over three days of pairing

B. pfeifferi

17

11.1

1.9

 

B. camerunensis

15

11.4

3.5

  1. No: number of; sd: standard deviation