It is very obvious that selectivity is very important to every assessment but especially red snapper. This was made very clear when the Beufort Lab put out the paper defending flat top selectivity. First of all I do not think that this paper should even be allowed to be part of this assessment unless fishermen are allowed full access to it before the assessment process ends.
Just from the small amount that I was able to see during webinar 2 it is full of major errors and needs to either be corrected or completely thrown out. These are the issues that need to be addressed from just the short version that we were shown.
1. On the scatter plots for age at depth for the entire fleet it shows older fish sampled in water shallower than 150 equal to older fish sampled in water deeper than 150 feet. Were these samples adjusted for the fact that effort inside of 150 is ten times greater than effort inside of 150?
2. The entire focus of this paper was about habitat and depth in regards to their availability to fishing pressure. Mutton snapper fish have the same habitat and depths available to them in the South Atlantic and they have a dome shaped selectivity. How is this possible?
3. From what I know of this paper none of these were addressed:
- a. 75% of fishing pressure occurs around or near large ledges but larger red snapper do
not live on large ledges as often as small snapper because they do not need the cover
or protection of the ledge (SEDAR 7 large snapper/small ledges and live bottom) - b. Larger red snapper do not feed as often as small red snapper and are much less likely
to feed than small red snapper for a number of reasons (growth). - c. For the average recreational angler a 20 pound red snapper is much harder to catch
than a 5 pound red snapper (common sense). - d. All of the handline aging data is the same as in the GOM which uses dome shaped
selectivity. - e. Many red snapper move to deeper water as they get older.
When is this paper going to be made available to the public so that the people who really know can see if this paper makes any sense? I need to see the complete version as soon as possible. Is this possible?
Thank you,
David Nelson
Posted by the Dolphin View Seafood Restaurant A new smyrna beach
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