Yellowtail Flounder Revisited

GB YT

0

20

40

60

80

100

120

140

0 10 20 30 40 50

SSB (000 mt)

R (

mil

lio

ns

)

VPA (SSB<5kt)

VPA (SSB>5kt)

Hindcast

F40%SPR

Mean R (SSB>5kt)

Median R (SSB>5kt)

SSBmsy=46.0

SNEMA YT

0

100

200

300

400

500

600

0 20 40 60 80 100 120 140

SSB (000 mt)

R (

mill

ion

s)

VPA (SSB<5kt)

VPA (SSB>5kt)

Hindcast

F40%SPR

Mean R (SSB>5kt)

Median R (SSB>5kt)

"SSBmsy=113.5"

SNEMA YT Alt

0

100

200

300

400

500

600

0 20 40 60 80 100 120 140

SSB (000 mt)

R (

mill

ion

s)

VPA (SSB<5kt)

VPA (SSB>5kt)

F40%SPR

Mean R

Median R

SSBmsyAlt=27.6

CCGOM YT

0

5

10

15

20

25

0 2 4 6 8 10

SSB (000 mt)

R (

mill

ion

s)

VPA

Hindcast

F40%SPR

Mean R

Median R

SSBmsy=8.31

Yellowtail BRP ComparisonStock BRP Old New

GB Fmsy 0.25 0.254SSBmsy 58.8 46.0MSY 12.9 10.0

no hindcastSNEMA Fmsy 0.26 0.264 0.264

SSBmsy 69.5 113.5 27.6MSY 14.2 25.7 6.3

CCGOM Fmsy 0.17 0.238SSBmsy 12.6 8.31MSY 2.3 1.82

Recruitment Density Plots

• Made in R

• Red lines are medians

• Blue lines are means

• Limited number of data points means quite smoothed

0 50 100 150

0.00

00.

005

0.01

00.

015

0.02

0

density.default(x = GB_R, from = 0)

N = 30 Bandwidth = 11.5

Den

sity

Georges Bank YT

0 200 400 600

0.00

000.

0005

0.00

100.

0015

0.00

200.

0025

0.00

300.

0035

density.default(x = SNEMA_R, from = 0)

N = 23 Bandwidth = 69.92

Den

sity

SNEMA YT

0 5 10 15 20 25

0.00

0.05

0.10

0.15

density.default(x = CCGOM_R, from = 0)

N = 30 Bandwidth = 1.193

Den

sity

CCGOM YT