# Presentation: 707792

## Commercial Yellowtail Snapper Fishery in Puerto Rico 1983-2000

- Nancie J. Cummings - NMFS
- Daniel Matos-Caraballo – PR DNER

## Location of Fishing Centers

## Fisher Sales By Calendar Year

## Fisher Sales By Gear

## Temporal Variation In Fisher Landings

## Total Value and Average Value per Pound by Gear ($ U.S.)

## Total Value by Gear

## Observed Catch per Unit Effort

| Ntrips | N | Mean CPUE | Min CPUE | Max CPUE | STDDEV
(CPUE) | Q1 | Q3 |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | 57900 | 37.1 | 0.5 | 3051 | 54.9 | 10 | 45 |
| 2 | 4458 | 18 | 0.5 | 440.5 | 24.7 | 5 | 20 |
| 3 | 3469 | 14.5 | 0.3 | 237 | 20 | 3 | 16.7 |
| 4 | 2893 | 12.9 | 0.3 | 300 | 20 | 3 | 14.4 |
| 5 | 2616 | 9.1 | 0.2 | 135.2 | 12.9 | 2 | 9.8 |
| 6 | 2144 | 9 | 0.2 | 247.2 | 14.3 | 2 | 10 |
| 7 | 1262 | 8.5 | 0.1 | 114.3 | 13.1 | 2 | 8.6 |
| 8 | 1058 | 9.3 | 0.2 | 193.8 | 13.5 | 2 | 10.4 |
| 9 | 536 | 9.3 | 0.1 | 91.3 | 12.3 | 2 | 9.8 |
| 10 | 1033 | 16.4 | 0.2 | 1510 | 65.3 | 2 | 10 |
| 11 | 369 | 14.4 | 0.1 | 320 | 30.8 | 2 | 13.6 |
| 12 | 652 | 11.8 | 0.1 | 419 | 28.4 | 2 | 10 |
| 13 | 181 | 13.7 | 0.2 | 307 | 30.9 | 2 | 15.4 |
| 14 | 266 | 7.6 | 0.1 | 117.2 | 13.1 | 1 | 7.6 |
| 15 | 335 | 14.5 | 0.1 | 1167 | 69.1 | 1 | 12 |
| 16 | 285 | 9.9 | 0.2 | 464 | 30.8 | 1 | 10.4 |
| 17 | 145 | 14.9 | 0.1 | 494 | 46.5 | 2 | 12.4 |
| 18 | 178 | 6.4 | 0.1 | 118 | 11.5 | 1 | 7.8 |
| 19 | 126 | 8.1 | 0.1 | 71.3 | 10.6 | 1 | 12.7 |
| 20 | 323 | 8.3 | 0.2 | 359 | 25.3 | 1 | 7.5 |

| Ntrips | N | Mean CPUE | Min CPUE | Max CPUE | STDDEV
(CPUE) | Q1 | Q3 |
| --- | --- | --- | --- | --- | --- | --- | --- |
|                   21 | 81 | 7.8 | 0.1 | 43.6 | 8.6 | 1 | 13.7 |
| 22 | 88 | 9.9 | 0.1 | 356 | 43.5 | 1 | 4.5 |
| 23 | 56 | 5.7 | 0.1 | 91 | 12.9 | 1 | 6.5 |
| 24 | 82 | 4.1 | 0.1 | 29.2 | 5.7 | 1 | 4.4 |
| 25 | 79 | 4 | 0.2 | 31.6 | 6.5 | 1 | 4.4 |
| 26 | 34 | 3.9 | 0.4 | 26.2 | 4.7 | 1 | 5.4 |
| 27 | 22 | 2.5 | 0.1 | 13.8 | 3.7 | 1 | 2.2 |
| 28 | 28 | 2.9 | 0.1 | 23.2 | 5.1 | 1 | 1.9 |
| 29 | 5 | 1.7 | 0.1 | 4.7 | 1.8 | 1 | 2.1 |
| 30 | 59 | 4 | 0.2 | 37.5 | 6.2 | 1 | 5.7 |
| 31 | 9 | 2.9 | 0.1 | 6.5 | 2.1 | 1 | 4 |
| 32 | 5 | 1.2 | 0.3 | 2.3 | 0.8 | 1 | 1.6 |
| 33 | 2 | 0.2 | 0.1 | 0.4 | 0.2 | 0 | 0.4 |
| 34 | 2 | 0.3 | 0.1 | 0.4 | 0.2 | 0 | 0.4 |
| 35 | 2 | 12.7 | 0.4 | 24.9 | 17.3 | 0 | 24.9 |
| 36 | 5 | 2.3 | 0.4 | 5.7 | 2.1 | 1 | 2.8 |
| 37 | 1 | 0.5 | 0.5 | 0.5 |  | 1 | 0.5 |
| 38 | 3 | 2.1 | 0.3 | 3.7 | 1.7 | 0 | 3.7 |
| 39 | 2 | 3.6 | 0.1 | 7.1 | 5 | 0 | 7.1 |
| 40 | 13 | 2 | 0.2 | 10 | 3.1 | 0 | 2 |
| 41 | 2 | 0.5 | 0.1 | 0.8 | 0.5 | 0 | 0.8 |
| 42 | 1 | 0.7 | 0.7 | 0.7 |  | 1 | 0.7 |

## Slide 10

| Ntrips | N | Mean CPUE | Min CPUE | Max CPUE | STDDEV
(CPUE) | Q1 | Q3 |
| --- | --- | --- | --- | --- | --- | --- | --- |
|         45 | 2 | 0.3 | 0.2 | 0.4 | 0.1 | 0 | 0.4 |
| 46 | 2 | 12.5 | 0 | 25 | 17.6 | 0 | 25 |
| 47 | 1 | 0 | 0 | 0 |  | 0 | 0 |
| 48 | 2 | 0.2 | 0 | 0.4 | 0.2 | 0 | 0.4 |
| 50 | 5 | 1.3 | 0.1 | 4 | 1.6 | 0 | 1.4 |
| 51 | 1 | 16.4 | 16.4 | 16.4 |         .  1 | 6 | 16.4 |
| 53 | 1 | 1.7 | 1.7 | 1.7 |  | 2 | 1.7 |
| 55 | 2 | 3.6 | 2.6 | 4.5 | 1.4 | 3 | 4.5 |
| 56 | 1 | 0.3 | 0.3 | 0.3 |  | 0 | 0.3 |
| 58 | 2 | 0.2 | 0.1 | 0.3 | 0.1 | 0 | 0.3 |
| 59 | 1 | 11.7 | 11.7 | 11.7 |          .  1 | 2 | 11.7 |
| 60 | 3 | 0.2 | 0.1 | 0.4 | 0.2 | 0 | 0.4 |
| 62 | 3 | 2.5 | 0.6 | 4 | 1.7 | 1 | 4 |
| 63 | 1 | 0.7 | 0.7 | 0.7 |  | 1 | 0.7 |
| 64 | 1 | 0.1 | 0.1 | 0.1 |  | 0 | 0.1 |
| 66 | 1 | 0.4 | 0.4 | 0.4 |  | 0 | 0.4 |
| 69 | 1 | 0.7 | 0.7 | 0.7 |  | 1 | 0.7 |
| 70 | 3 | 0.8 | 0.1 | 1.9 | 1 | 0 | 1.9 |
| 78 | 1 | 8.3 | 8.3 | 8.3 |  | 8 | 8.3 |
| 79 | 1 | 0.4 | 0.4 | 0.4 |  | 0 | 0.4 |
| 80 | 1 | 5 | 5 | 5 |  | 5 | 5 |
| 87 | 1 | 0.7 | 0.7 | 0.7 |  | 1 | 0.7 |
| 90 | 3 | 0.9 | 0.1 | 2 | 1 | 0 | 2 |
| 95 | 1 | 0.1 | 0.1 | 0.1 |  | 0 | 0.1 |
| 96 | 1 | 0.2 | 0.2 | 0.2 |  | 0 | 0.2 |
| 97 | 7 | 0.4 | 0.1 | 0.9 | 0.3 | 0 | 0.5 |
| 99 | 10 | 0.6 | 0.1 | 1.8 | 0.6 | 0 | 1.2 |
| All | 80869 | 30.1 | 0 | 3051 | 49.7 | 6 | 35.5 |

## Nominal CPUE and STD DEV (CPUE) by the “ntrips” Variable

## Nominal CPUE, ntrips = 1 Data Set

## Nominal CPUE, ntrips = 1 Data Set

## Nominal CPUE, ntrips = 7 Data Set

## Nominal CPUE, ntrips ≤ 7 Data Set

## Nominal CPUE Summary Trends

## Standardized CPUE, ntrips = 1 and ntrips ≤ 7 Data Set

## Summary Standardized CPUE – All Fishing Trips

## Conclusions

- Yellowtail snapper landings and number of sales showed steady increases from 1987 through 2000.
- Landings declined since 2000.
- 2003 data should be considered preliminary in all discussions of landings and CPUE.
- The majority of landings were from pots and hook and line gear.
- Landings from hook and line gear have steadily increased while total landings from pot gear have declined.
- Nominal and standardized CPUE varied without trend since 1985.

## Analysis Recommendations	

- Explore high values of CPUE in 1984 with regional biologists
- Explore additional data set selection criteria (i.e. objective ways to handle number of trips variable)
- Prepare GIS maps of fisher sales
- Present uncertainty in standardized CPUE estimates (error bars)
- Consider other model options (interactions, etc.)
- Compare nominal CPUE values and standardized estimates graphically
- Continue work towards linking multiple species records