Biological Sampling Manual

NOAA, National Marine Fisheries Service
Northeast Fisheries Science Center
Fisheries Sampling Branch

Northeast Fisheries Observer Program

BIOLOGICAL SAMPLING MANUAL

Revised January 1, 2008

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COVER

TABLE OF CONTETS

LIST OF FIGURES

INTRODUCTION

OBSERVERS AT WORK

Biological Sampling: an overview	1

Tables 1a.-h. Sampling Priority Tables by Fishery
Gillnet and Beach Seine Fisheries, Table 1a.	4
Otter Trawl Fisheries, Table 1b.	8
Shrimp Trawl Fishery, Table 1c.	14
Scallop Trawl and Scallop Dredge Fishery, Table 1d.	16
Twin Trawl Fishery	19
Lobster and Crab Pot Fisheries, Table 1e.	20
Bottom Longline Fisheries, Table 1f.	22
Mid-Water Otter Trawl, Purse Seine and Pair Trawl Fisheries, Table 1g.	24
Clam/Quahog Fisheries, Table 1h.	30

Table 2. Fish and Shellfish Sampling Requirements By Species	32

Length Measurement Illustrations	34

Age Structure Sample Collection
Otoliths	36
Scales	38

Table 3. Pelagic Fish Sampling Requirements by Species	40
Pelagic Fish Length Measurement and Age Sample Parts Illustrations	41
Shark/Fish Tag Recapture	42
Biological Sample Tag Instructions	43

Sex Determination
Yellowtail Flounder & Redfish	44
Sharks & Tunas	45
Swordfish	46
American Lobster	48
Crabs	49

Table 4. Marine Mammal Sampling Requirements by Species	50
Marine Mammal Sampling Protocols	51
Sex Determination	52
Marine Mammal Additional Sampling Protocols	53
Internal Organs	54

Sea Bird Sampling Protocols	55
Sea Turtle Sampling Protocols	56

Selected Species Identification
American Shad vs. Hickory Shad	58
Blueback Herring vs. Alewife	59
Little Skate vs. Winter Skate	60
Loligo Squid vs. Illex Squid	61
Atlantic Sturgeon vs. Shortnose Sturgeon	62
Small Tunas: Little Tunny vs. Atlantic Bonito vs. Skipjack Tuna	63

Subsampling and Random Sampling Guidelines	64
Catch Estimation Guidelines	66
Subsampling Guidelines for the Scallop Fishery	68

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(Modified Jan. 02 2008)