Appendix 1 - Reference code tables

SOP

Scientific Observer Programme - Catch Sampling

TAN

Tangaroa

KAH

Kaharoa

AEX

Amaltal Explorer

COR

Cordella

GIL

Giljanes

WIL

Will Watch

JCO

James Cook

WES

Wesermunde

ARR

Arrow

REC

Recreational

MIS

Miscellaneous e.g., mixed landing, or no length frequency

AKA

Akagi Maru

BFN

Bluefin - MAF Auckland Vessel

SHI

Shinkai Maru

RIG

Rig catch sampling (gill-netting and trawl surveys)

ELE

Elephantfish catch sampling

BUC

Otago Buccaneer

AKS

Akebono Maru No. 3

AKE

Akebono Maru No. 73

1

David A. Banks

2

David O. Fisher

3

Adam D. Langley

4

Kerri E. Lister

5

Kevin A. Mackay

6

Heidi Getrost

7

Elizabeth Halsey

8

Colin Docherty

9

Mike Coakley

10

Peter Horn

11

C. L. Newport

12

Claire L. Gabriel

13

Gerard Worsfold

14

Kevin J. Sullivan

15

Kimon George

16

Ian Rosemergy

17

Jonathan Ingerson

18

Peter Marriott

19

Darren Stevens

20

Larry Paul

21

Bruce Hartill

22

Cameron Walsh

23

Ken Kawiti

24

Helena Cadenhead

25

Bill Trusewich

26

Guido I. Kucerans

27

Dave J. Gilbert

28

A. J Taylor

29

C.Smith

30

D. J Hollaway

31

Pat. Swanson

32

N. J Millar

33

K. A Fisher

34

Brent A Wood

35

B. L Bycroft

36

Ian F West

37

CLC

38

BJW

39

Colin Sutton

40

Greg Meikle

41

Jim Drury

42

Victor Cauty

43

Derrick Parkinson

44

Simon Carter

45

Mark Morrison

46

Helen Johnson

47

Elwyn Green

48

Andy Hay

49

Andrea Price

50

Dominic McCarthy

51

Tracey Osborne

52

Diederik Meenken

53

Paul Creswell

54

Eunice Warren

55

Nick Davies

56

Malcolm Haddon

57

Sheryl Mutton

58

Tim Lowe

59

Jeremy McKenzie

60

Dave Allen

61

Paul Fraser

62

Eddie Sides

63

Carmen Gray

64

Stuart Hanchet

65

Evan Skipworth

66

Andrew Hamilton

67

John Taunton-Clark

68

Tessa Fagan

69

Glenn Mackay

70

Mike Beentjes

71

Don Jellyman

72

Ben Chisnall

73

Jill Parkyn

74

Glen Carbines

75

Derek Kater

76

Matthew Smith

77

Caoimhghin O Maolagain

78

Gavin James

79

ERM

80

REM

81

JF

82

T P

83

Robert Bedford

84

SJH

85

Adrian Colman

86

Malcolm Francis

87

Arthur Hore

88

Nathan Singleton

89

Shaun Henderson

91

Niki Alcock

92

Bruce Dudley

93

Crispin Middleton

99

Not Known

100

Di Tracey

101

Peter Horn and Di Tracey

2

Break, polish, burn and count rings from the centre, looking at one half of the otolith. A 2 mm diameter scale was used to help locate the first ring. (used by G. Worsfold, C. Gabriel and K. Sullivan for the pilot phase .ie., 1988 otolith readings.)

3

Break, polish, burn or bake and count rings using a graticle as a guide to the 1^st 3 years (1 year at 2mm, 2yrs at 4mm & 3 years at 5mm) looking at one half of the otolith. (Used for sub-samples of 1988 and 1990 seasons otoliths.)

4

Otolith read whole, immersed in water, paraffin oil or like

5

Whole, bleached vertebral centra were obliquely illuminated with a fibre optic light source. By moving the light source above and below the rim of the articulating face, it was possible to quickly view the hyperminearlised vertebral bands with both transmitted and reflected light. The theoretical birthday was defined as 1 September. The time of band deposition approximately coincides with the theoretical birthday. Therefore, the age assigned to each rig was the band count minus one for the birth band, plus the fraction of the year elapsed between 1 September and the sampling date. The mean of two age estimates (made by two readers) was taken as the final age estimate.

6

Break and Burn

7

Whole otolith baked, embedded in epoxy resin, cut transversely through nucleus with diamond tip blade.

Read using binocular microscope to count rings from one or both sides of a prepared otolith.

8

Ageing material bleached, embedded in epoxy resin, sectioned, attached to a slide and polished.

10

Otolith weight in grams to 3 decimal places

11

Thin section, as in Tracey & Horn 1999 Background & review of ageing ORH

12

Modified Ageing Methodology for Juvenile Hoki Age 1 - 2. As of December 2000.

Result and error attributes in the t_reading table:

result1

Age

result2

Radius to Zone 1

result3

Radius to Zone 2

result6

Radius to otolith edge

error3

Overall clarity (1-3), where 1 = best

error5

split/multiple 2^nd zone (1 = true, 0 = false)

result1

Age

result2

Radius to Zone 1

result3

Radius to Zone 2

result4

Radius to Zone 3

result5

Radius to edge of the juvenile zone

result6

Radius to otolith edge

error1

Clarity of Zone 1 (1-4), where 1 = best, 4 = unreadable

error2

Clarity of juvenile zone 1 (1-4), where 1 = best, 4 = unreadable

error4

Split/multiple 1^st zone (1=true, 0=false)

error5

split/multiple 2^nd zone (1 = true, 0 = false)

error6

split/multiple 3nd zone (1 = true, 0 = false)

result1

Age

result2

Radius to Zone 1

result3

Radius to Zone 2

result4

Radius to Zone 3

result5

Radius to edge of the juvenile zone

error1

Clarity of Zone 1 (1-3), where 1 = best

error2

Clarity of juvenile zone 1 (1-4), where 1 = best, 4 = unreadable

error7

Clarity for Zones 1 to 3 combined (1-3), where 1=best

2

Scales

3

Spines

4

Vertebrae

5

Teeth

6

Statolith (cephalopod)