Pots Traps Baskets Catch Sampling http www wildlifenews
Pots / Traps / Baskets Catch Sampling http: //www. wildlifenews. alaska. gov http: //coastalvoices. blogspot. com/200 9_09_01_archive. html
Data collection priorities � Estimate effort and total catch for each gear deployment; � Identify every individual caught on each randomly selected set (or subsample within the set) and estimate percent retained; � Collect biological information on target and other species as requested; � Record all sightings and interactions with marine mammals and sea turtles; � Record vessel and fishing gear characteristics.
Objectives �X �Demonstrate your ability to sample and complete the Catch Composition form
Defining a set �Longline of baskets – total baskets connected by one line �Deployed individually – coordinate w/ Captain ◘ ◘ ◘ � 1 set of 18 � 3 sets of 6 � 6 sets of 3 ◘ ◘ ◘
Choosing a set to sample �Same general rules as for demersal longline �Use random sample table if necessary
Choosing pots (baskets) to sample �Population: all baskets in 1 ◘ ◘ ◘ ◘ ◘ set �Sampling unit: single basket �Decide on how much to sample (e. g. 1/3 of baskets) – spatial sample frame �Choose sample method random or systematic random
Catch Composition Form
Catch Composition Form �Weights �Actual �Average weight * total count �Estimate
Activity � Questions on catch composition sampling / random sampling or the form? � Activity #2 � Groups of 2 � Sample 20% (Systematic or Random) � Describe how you selected pots � Tally sample & complete Catch Comp form
Tally Sampling Activity Key to “symbols” Shark Purple body Stingray Redfish Flatfish Octopus Snail Starfish
Pot #1 8 1 Shark 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 4 4 8 2 2 3 Snail 3 9 9 2 3 2 10 10 7 9
Pot #2 8 9 2 9 8 6 9 7 5 2 4 7 4 2 5 4 4 8 2 Purple body 7 3 4 9 3 2 9 4 5 8 5 1 6 4 6 7 4 9 9 9 3 9 9 2 3 10 7 9 2 2 6 Starfish 2 10
Pot #3 8 EMPTY 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 4 4 8 2 2 2 10 10 7 9
Pot #4 8 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 7 4 9 9 2 3 10 7 9 2 4 4 4 2 4 7 5 8 1 9 2 6 9 2 7 Octopus 4 6 17 Snail 3 9 1 Starfish 2 10
Pot #5 8 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 4 4 8 2 2 18 Snail 3 9 9 2 3 2 10 10 7 9
Pot #6 8 6 2 4 4 9 9 2 9 8 7 5 2 4 7 1 2 5 9 2 Flatfish 4 8 2 7 3 5 Redfish 4 9 3 9 4 5 8 5 6 4 6 7 4 9 9 3 9 9 2 3 10 7 9 2 2 Starfish 2 10
Pot #7 8 6 4 Shark 9 2 1 Stingray 9 8 7 3 4 9 3 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 10 7 9 4 4 8 2 2 2 Starfish 2 10
Pot #8 8 6 2 1 Shark 9 2 9 8 7 3 4 9 3 9 7 5 2 9 4 5 8 5 3 Flatfish 4 7 1 6 4 2 5 9 4 4 8 2 1 Octopus 4 6 7 4 9 9 3 9 9 2 3 2 2 10 10 7 9
Pot #9 8 EMPTY 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 4 4 8 2 2 2 10 10 7 9
Pot #10 8 1 Shark 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 4 4 8 2 2 1 Snail 3 9 9 2 3 2 10 10 7 9
Pot #11 8 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 4 7 1 6 4 6 7 4 9 2 5 9 9 3 9 9 2 3 10 7 9 2 4 4 2 Flatfish 4 8 2 2 5 Starfish 2 10
Pot #12 8 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 10 7 9 4 4 8 2 2 8 Starfish 2 10
Pot #13 8 6 9 2 1 Stingray 9 8 7 3 4 9 3 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 10 7 9 4 4 8 2 2 2 Starfish 2 10
Pot #14 8 9 2 9 8 6 9 7 5 2 4 7 1 1 Purple body 7 3 4 9 3 2 9 4 5 8 5 6 4 6 7 4 9 4 2 5 9 9 4 4 8 2 2 2 Snail 3 9 9 2 3 2 10 10 7 9
Pot #15 8 EMPTY 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 4 4 8 2 2 2 10 10 7 9
Pot #16 8 EMPTY 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 4 4 8 2 2 2 10 10 7 9
Pot #17 8 6 2 4 4 1 Shark 9 2 9 8 7 3 4 9 3 9 7 5 2 9 4 5 8 5 7 1 6 4 6 7 4 9 9 2 3 10 7 9 2 Flatfish 4 2 4 5 8 9 2 17 Snail 3 9 1 Starfish 2 10
Pot #18 8 6 9 9 2 7 9 5 8 2 2 4 7 1 6 4 2 5 9 4 4 8 2 7 3 2 Redfish 9 4 1 Octopus 4 9 3 5 8 5 4 6 7 4 9 9 3 9 9 2 3 2 2 10 10 7 9
Pot #19 8 6 9 2 1 Stingray 9 8 9 7 5 2 2 4 7 1 4 2 5 9 4 4 8 2 7 3 1 Redfish 4 9 3 9 4 5 8 5 6 4 6 7 4 9 9 3 9 9 2 3 10 7 9 2 4 Starfish 2 10
Pot #20 8 2 Shark 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 10 7 9 4 4 8 2 2 7 Starfish 2 10
Pot #21 8 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 7 4 9 2 4 7 1 6 4 2 5 9 9 4 4 8 2 2 4 Octopus 4 6 3 Snail 3 9 9 2 3 2 10 10 7 9
Pot #22 8 EMPTY 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 4 4 8 2 2 2 10 10 7 9
Pot #23 8 9 2 9 8 6 9 7 5 2 4 7 1 1 Purple body 7 3 4 9 3 2 9 4 5 8 5 6 4 6 7 4 9 4 2 5 9 9 4 4 8 2 2 4 Snail 3 9 9 2 3 2 10 10 7 9
Pot #24 8 1 Shark 9 2 9 8 6 9 7 5 2 2 4 7 1 4 2 5 9 4 4 8 2 7 3 1 Redfish 4 9 3 9 4 5 8 5 6 4 6 7 4 9 9 3 9 9 2 3 10 7 9 2 4 Starfish 2 10
Pot #25 8 1 Shark 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 4 4 8 2 2 8 Snail 3 9 9 2 3 2 10 10 7 9
Pot #26 8 9 2 9 8 6 9 7 5 2 4 7 4 2 5 4 4 8 2 Purple body 7 3 4 9 3 2 9 4 5 8 5 1 6 4 6 7 4 9 9 9 3 9 9 2 3 10 7 9 2 2 1 Starfish 2 10
Pot #27 8 EMPTY 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 4 4 8 2 2 2 10 10 7 9
Pot #28 8 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 7 4 9 9 2 3 10 7 9 2 4 4 4 2 4 7 5 8 1 9 2 6 9 2 2 Octopus 4 6 11 Snail 3 9 1 Starfish 2 10
Pot #29 8 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 4 4 8 2 2 12 Snail 3 9 9 2 3 2 10 10 7 9
Pot #30 8 6 2 4 4 9 9 2 9 8 7 5 2 4 7 1 2 5 9 1 Flatfish 4 8 2 7 3 4 Redfish 4 9 3 9 4 5 8 5 6 4 6 7 4 9 9 3 9 9 2 3 10 7 9 2 2 Starfish 2 10
Pot #31 8 6 4 Shark 9 2 1 Stingray 9 8 7 3 4 9 3 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 10 7 9 4 4 8 2 2 1 Starfish 2 10
Pot #32 8 6 2 1 Shark 9 2 9 8 7 3 4 9 3 9 7 5 2 9 4 5 8 5 1 Flatfish 4 7 1 6 4 2 5 9 4 4 8 2 5 Octopus 4 6 7 4 9 9 3 9 9 2 3 2 2 10 10 7 9
Pot #33 8 EMPTY 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 4 4 8 2 2 2 10 10 7 9
Pot #34 8 1 Shark 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 4 4 8 2 2 1 Snail 3 9 9 2 3 2 10 10 7 9
Pot #35 8 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 4 7 1 6 4 6 7 4 9 2 5 9 9 3 9 9 2 3 10 7 9 2 4 4 3 Flatfish 4 8 2 2 5 Starfish 2 10
Pot #36 8 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 10 7 9 4 4 8 2 2 7 Starfish 2 10
Pot #37 8 6 9 2 2 Stingray 9 8 7 3 4 9 3 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 10 7 9 4 4 8 2 2 3 Starfish 2 10
Pot #38 8 9 2 9 8 6 9 7 5 2 4 7 1 1 Purple body 7 3 4 9 3 2 9 4 5 8 5 6 4 6 7 4 9 4 2 5 9 9 4 4 8 2 2 2 Snail 3 9 9 2 3 2 10 10 7 9
Pot #39 8 EMPTY 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 4 4 8 2 2 2 10 10 7 9
Pot #40 8 EMPTY 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 4 4 8 2 2 2 10 10 7 9
Pot #41 8 6 2 4 4 4 Shark 9 2 9 8 7 3 4 9 3 9 7 5 2 9 4 5 8 5 7 1 6 4 6 7 4 9 9 2 3 10 7 9 1 Flatfish 4 2 4 5 8 9 2 13 Snail 3 9 1 Starfish 2 10
Pot #42 8 6 9 9 2 7 9 5 8 2 2 4 7 1 6 4 2 5 9 4 4 8 2 7 3 2 Redfish 9 4 3 Octopus 4 9 3 5 8 5 4 6 7 4 9 9 3 9 9 2 3 2 2 10 10 7 9
Pot #43 8 6 9 2 1 Stingray 9 8 9 7 5 2 2 4 7 1 4 2 5 9 4 4 8 2 7 3 1 Redfish 4 9 3 9 4 5 8 5 6 4 6 7 4 9 9 3 9 9 2 3 10 7 9 2 1 Starfish 2 10
Pot #44 8 2 Shark 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 10 7 9 4 4 8 2 2 1 Starfish 2 10
Pot #45 8 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 7 4 9 2 4 7 1 6 4 2 5 9 9 4 4 8 2 2 4 Octopus 4 6 3 Snail 3 9 9 2 3 2 10 10 7 9
Pot #46 8 EMPTY 9 2 9 8 7 3 4 9 3 6 9 7 5 2 9 4 5 8 5 2 4 7 1 6 4 6 7 4 9 4 2 5 9 9 3 9 9 2 3 4 4 8 2 2 2 10 10 7 9
Pot #47 8 9 2 9 8 6 9 7 5 2 4 7 1 1 Purple body 7 3 4 9 3 2 9 4 5 8 5 6 4 6 7 4 9 4 2 5 9 9 4 4 8 2 2 7 Snail 3 9 9 2 3 2 10 10 7 9
Pot #48 8 1 Shark 9 2 9 8 6 9 7 5 2 2 4 7 1 4 2 5 9 4 4 8 2 7 3 2 Redfish 4 9 3 9 4 5 8 5 6 4 6 7 4 9 9 3 9 9 2 3 10 7 9 2 7 Starfish 2 10
References Hanrahan, J. , D. J. Melindy, and J. V. Pelrine. 1997. Atsea Observer Program Operations Manual: A Training Aid and Field Reference. National At-sea Fisheries Observer Program, Department of Fisheries and Oceans, Ottawa, Canada. Slack-Smith, R. J. 2001. Fishing with traps and pots. FAO Training Series No. 26, FAO, Rome. Watson, R. , E. Hoshino, J. Beblow, C. Revenga, Y. Kura, and A. Kitchingman. 2004. Fishing Gear Associated With Global Marine Catches. Fisheries Centre Research Reports 12.
http: //www. fao. org/fishery/vesseltype/230/en Courtesy of Joël Prado - FAO/FIIT
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