Marine Invertebrates- the Blue Crab



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Chesapeake Bay Field Survey for Juvenile and Adult Callinectes sapidus, one season


(mean number of crabs computed from monthly trawl survey data)

Station #1: Mouth of Chesapeake Bay



 

Water Temp (°F)

Salinity
(ppt)

Males
Juv.              Adult

Females
Juv.              Adult

Dec - Mar

41.43

29.71

2

1

1

21

Apr - May

56.65

27.44

1

0

0

27

Jun - Aug

73.49

28.47

0

0

2

20

Sep - Nov

65.12

29.94

4

1

4

28

Station #2: Mouth of James River



 

Water Temp (°F)

Salinity
(ppt)

Males
Juv.              Adult

Females
Juv.              Adult

Dec - Mar

43.45

22.19

9

4

6

13

Apr - May

59.40

21.82

6

4

6

10

Jun - Aug

74.52

24.09

3

3

3

15

Sep - Nov

65.62

23.42

10

1

12

15

Station #3: James River at Hog Island



 

Water Temp (°F)

Salinity
(ppt)

Males
Juv.              Adult

Females
Juv.              Adult

Dec - Mar

44.82

3.35

6

12

4

4

Apr - May

63.44

1.90

4

8

3

3

Jun - Aug

80.86

5.34

1

6

0

3

Sep - Nov

67.48

7.03

8

6

5

0

Station #4: Mouth of York River



 

Water Temp (°F)

Salinity
(ppt)

Males
Juv.              Adult

Females
Juv.              Adult

Dec - Mar

43.56

20.74

20

9

19

12

Apr - May

59.02

18.46

21

9

24

17

Jun - Aug

76.81

20.89

10

8

13

13

Sep - Nov

66.82

22.04

33

5

35

13

Station #5: Pamunkey River



 

Water Temp (°F)

Salinity
(ppt)

Males
Juv.              Adult

Females
Juv.              Adult

Dec - Mar

44.45

2.25

18

15

10

0

Apr - May

63.83

1.65

12

14

6

1

Jun - Aug

80.19

4.30

6

8

3

0

Sep - Nov

66.07

6.45

13

5

11

0

Station #6: Mouth of Rappahannock River



 

Water Temp (°F)

Salinity
(ppt)

Males
Juv.              Adult

Females
Juv.              Adult

Dec - Mar

42.40

17.09

14

14

12

6

Apr - May

59.36

14.35

9

9

6

6

Jun - Aug

78.12

16.26

3

7

1

3

Sep - Nov

65.43

18.65

10

4

8

2

Station #7: Bayside Eastern Shore



 

Water Temp (°F)

Salinity
(ppt)

Males
Juv.              Adult

Females
Juv.              Adult

Dec - Mar

42.64

20.65

25

11

32

17

Apr - May

56.81

19.03

25

5

30

13

Jun - Aug

76.34

19.68

15

4

17

9

Sep - Nov

65.44

21.68

41

3

39

10

Station #8: Tangier Island

 

Water Temp (°F)

Salinity
(ppt)

Males
Juv.              Adult

Females
Juv.              Adult

Dec - Mar

41.70

19.04

37

9

39

19

Apr - May

58.83

17.39

33

6

33

17

Jun - Aug

77.64

18.27

13

4

17

11

Sep - Nov

64.07

20.30

39

2

44

8

Station #9: Smith Island



 

Water Temp (°F)

Salinity
(ppt)

Males
Juv.              Adult

Females
Juv.              Adult

Dec - Mar

41.51

17.76

34

6

34

15

Apr - May

58.22

16.48

30

6

35

17

Jun - Aug

78.29

16.88

10

5

14

8

Sep - Nov

64.73

18.84

37

3

39

9

Station #10: Mouth of Potomac River



 

Water Temp (°F)

Salinity
(ppt)

Males
Juv.              Adult

Females
Juv.              Adult

Dec - Mar

41.85

13.40

10

12

8

8

Apr - May

57.10

11.50

11

11

7

6

Jun - Aug

75.97

12.90

5

5

1

3

Sep - Nov

64.94

14.89

11

6

9

2

Station #11: Upriver Potomac



 

Water Temp (°F)

Salinity
(ppt)

Males
Juv.              Adult

Females
Juv.              Adult

Dec - Mar

41.80

3.56

15

16

4

1

Apr - May

59.28

1.40

14

14

5

1

Jun - Aug

79.36

2.31

7

8

1

0

Sep - Nov

63.51

4.71

13

9

5

0

Station #12: Mouth of Choptank River

 

Water Temp (°F)

Salinity
(ppt)

Males
Juv.              Adult

Females
Juv.              Adult

Dec - Mar

40.86

13.77

17

12

7

0

Apr - May

58.53

11.94

19

8

9

1

Jun - Aug

77.74

11.97

10

5

5

0

Sep - Nov

63.15

14.70

15

4

6

0

Station #13: Mouth of Severn River



 

Water Temp (°F)

Salinity
(ppt)

Males
Juv.              Adult

Females
Juv.              Adult

Dec - Mar

41.38

14.50

12

10

3

0

Apr - May

53.15

11.99

13

9

3

0

Jun - Aug

73.79

13.00

9

5

2

0

Sep - Nov

65.90

15.55

13

5

4

0

 

 

 



 

 

 



 

 

 



 

Chesapeake Bay Field Survey for Adult Female Callinectes sapidus, one season


(mean number of crabs computed from monthly trawl survey data)

Station #1: Mouth of Chesapeake Bay



 

Water Temp (°F)

Salinity
(ppt)

Total Crabs

Orange Sponge

Black Sponge

Dec - Mar

41.43

29.71

31

0

0

Apr - May

56.65

27.44

27

4

19

Jun - Aug

73.49

28.47

24

0

18

Sep - Nov

65.12

29.94

28

0

0

Station #2: Mouth of James River



 

Water Temp (°F)

Salinity
(ppt)

Total Crabs

Orange Sponge

Black Sponge

Dec - Mar

43.45

22.19

13

0

0

Apr - May

59.40

21.82

10

6

4

Jun - Aug

74.52

24.09

15

2

13

Sep - Nov

65.62

23.42

15

0

0

Station #3: James River at Hog Island



 

Water Temp (°F)

Salinity
(ppt)

Total Crabs

Orange Sponge

Black Sponge

Dec - Mar

44.82

3.35

4

0

0

Apr - May

63.44

1.90

3

2

0

Jun - Aug

80.86

5.34

3

0

0

Sep - Nov

67.48

7.03

0

0

0

Station #4: Mouth of York River



 

Water Temp (°F)

Salinity
(ppt)

Total Crabs

Orange Sponge

Black Sponge

Dec - Mar

43.56

20.74

12

0

0

Apr - May

59.02

18.46

17

14

0

Jun - Aug

76.81

20.89

13

6

2

Sep - Nov

66.82

22.04

13

1

0

Station #5: Pamunkey River

 

Water Temp (°F)

Salinity
(ppt)

Total Crabs

Orange Sponge

Black Sponge

Dec - Mar

44.45

2.25

0

0

0

Apr - May

63.83

1.65

1

0

0

Jun - Aug

80.19

4.30

0

0

0

Sep - Nov

66.07

6.45

0

0

0

Station #6: Mouth of Rappahannock River



 

Water Temp (°F)

Salinity
(ppt)

Total Crabs

Orange Sponge

Black Sponge

Dec - Mar

42.40

17.09

6

0

0

Apr - May

59.36

14.35

6

3

0

Jun - Aug

78.12

16.26

3

0

0

Sep - Nov

65.43

18.65

2

0

0

Station #7: Bayside Eastern Shore



 

Water Temp (°F)

Salinity
(ppt)

Total Crabs

Orange Sponge

Black Sponge

Dec - Mar

42.64

20.65

17

0

0

Apr - May

56.81

19.03

13

5

0

Jun - Aug

76.34

19.68

9

2

2

Sep - Nov

65.44

21.68

10

0

0

Station #8: Tangier Island



 

Water Temp (°F)

Salinity
(ppt)

Total Crabs

Orange Sponge

Black Sponge

Dec - Mar

41.70

19.04

19

0

0

Apr - May

58.83

17.39

17

3

0

Jun - Aug

77.64

18.27

11

2

1

Sep - Nov

64.07

20.30

8

0

0


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