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Table 1 Mean number (± standard error) of follicular apoptotic cells and comparative statistics between wPip+ and wPip- groups

From: Effects of Wolbachia on ovarian apoptosis in Culex quinquefasciatus (Say, 1823) during the previtellogenic and vitellogenic periods

Period of oogenesis

 

Mean no. of apoptotic follicular cells per ovary (1)

Mean no. of primary follicles that have at least 1 apoptotic event (2)

Mean no. of secondary follicles that have at least 1 apoptotic event (3)

Statisticsb

PVP

 Day 1

wPip+

3.3 ± 3.29

nd

nd

(1) t = 0.6285, P = 0.5334c

wPip-

2.55 ± 4.2

nd

nd

 Day 2a

wPip+

12.85 ± 13.99**

nd

9.65 ± 5.83**

(1) U = 57.5, P < 0.0001; (3) t = 4.274, P < 0.0001

wPip-

3.45 ± 3.52**

nd

3.15 ± 3.5**

 Day 3

wPip+

8.4 ± 5.25

0.4 ± 0.82**

7.55 ± 4.26

(1) t = 0.2246, P = 0.8081; (2) U = 81.5, P = 0.0013; (3) t = 0.9477, P = 0.3493

wPip-

8.8 ± 5.09

1.9 ± 1.8**

6.3 ± 4.08

 Day 4

wPip+

4.43 ± 4.02

0.15 ± 0.37

3.6 ± 3.36

(1) t = 1.724, P = 0.0929; (2) U = 190, P = 0.7890; (3) t = 1.633, P = 0.1107

wPip-

2.5 ± 2.7

0.2 ± 0.41

2.1 ± 2.36

 Day 5

wPip+

2.05 ± 2.26*

0.4 ± 0.82

1.35 ± 1.53*

(1) t = 2.106, P = 0.0418; (2) U = 145.5, P = 0.1382; (3) t = 2.088, P = 0.0435

wPip-

3.7 ± 2.68*

1 ± 1.34

2.55 ± 2.06*

VP

 6 h

wPip+

9.15 ± 3.67**

1.2 ± 1.58*

7.2 ± 2.76**

(1) t = 4.254, P < 0.0001; (2) t = 2.401, P = 0.0214; (3) t = 3.484, P = 0.0013

wPip-

3.75 ± 4.33**

0.3 ± 0.57*

3.4 ± 4.02**

 12 h

wPip+

7.95 ± 8.91**

0.7 ± 0.86

6.4 ± 7.05**

(1) t = 2.543, P = 0.0152; (2) U = 172.5, P = 0.4569; (3) t = 3.015, P = 0.0046

wPip-

2.3 ± 3.03**

0.7 ± 1.34

1.5 ± 1.76**

 24 h

wPip+

6.25 ± 14.57**

2.05 ± 3.69**

1.1 ± 1.16**

(1) U = 80.5, P < 0.0012; (2) U = 110, P = 0.0114; (3) U = 110, P = 0.0139

wPip-

0.75 ± 1.45**

0.4 ± 0.94**

0.3 ± 0.66**

  1. Abbreviations: PVP pre-vitellogenic period, VP vitellogenic period, wPip+ infected, wPip- uninfected; nd, no data, T student t test, MW Mann-Whitney U- test, P P-value
  2. *P < 0.05
  3. **P < 0.02
  4. aUndifferentiated follicles, considered as secondary in the table
  5. b(1) statistics related to mean number of apoptotic follicular cells per ovary; (2) statistics related to mean number of primary follicles that have at least 1 apoptotic event; (3) statistics related to mean number of secondary follicles that have at least 1 apoptotic event
  6. cAll values for degrees of freedom for Student’s t - test: df = 38
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Parasites & Vectors

ISSN: 1756-3305

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