Skip to main content

Table 2 Mortality rates (n recently dead/total number) of oysters greater than and smaller than 40 mm SL from each of the 10 estuaries surveyed in 2014

From: Exploring the decline of oyster beds in Atlantic Canada shorelines: potential effects of crab predation on American oysters (Crassostrea virginica)

Estuary

<40 mm SL

>40 mm SL

Mortality rate

95% CI

Mortality rate

95% CI

Boughton river

74.6% (185/248)

68.8–79.6

14.3% (30/209)

10.2–19.8

East river

5.2% (106/2034)

4.3–6.3

23.6% (87/369)

19.5–28.2

North river

4.5% (105/2309)

3.8–5.5

13.2% (123/930)

11.2–15.6

Dunk river

1.3% (23/1808)

0.8–1.9

6.0% (22/368)

3.9–8.9

Wilmot river

1.2% (18/1495)

0.7––1.9

4.5% (15/370)

2.4–6.6

Kildare river

24.9% (57/229)

26.5––40.5

17.4% (92/530)

14.4–20.8

Hills river

36.2% (202/558)

35.6–44.1

33.3% (99/297)

28.2–38.9

Mill river

3.7% (31/844)

2.6–5.2

7.6% (24/317)

5.1–11.1

Cascumpec bay

6.8% (23/339)

4.5–10.0

19.8% (79/400)

16.1–23.9

Bideford river

0.96% (12/1255)

0.5–1.7

5.1% (16/312)

3.1–8.2