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This site contains documents relating to research from 1988 to the current date. Research was funded by MPI and its predecessor agencies. Expand the filter and select the relevant search parameters to search for documents.
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MOF1999-04O01/04/2001
Title: Review of Bay of Plenty trawl survey time series (1983-99)
MOF1999-04O Survey Bay of Plenty trawl 1983-99 final.pdf (2.2 MB)
Review of Bay of Plenty trawl survey time series (1983-99)
Author: Hanchet S.; Morrison M.; Stevenson M.;
FishingMethod: Trawl;
MOF1999-04O: .;
ResearchField: Trawl survey;
ScienceStock: Inshore;
Species: GUR; JDO; JMA; LEA; SNA; TRE;
INT980101/09/1999
Title: Review of the inshore trawl survey series along the east coast North Island 1993-96
INT9801 Survey East coast North Island Final.pdf (2.5 MB)
Review of the inshore trawl survey series along the east coast North Island 1993-96
Author: Hanchet S.M.; Stevenson M.;
FishingMethod: Trawl;
INT9801: .;
ResearchField: Trawl survey;
ScienceStock: Inshore;
Species: SKI; SNA; TAR; TRE;
ENV1999-0301/12/2000
Title: Areas of importance for spawning, pupping or egg-laying, and juveniles of New Zealand coastal fish
ENV1999-03 Coastal Fish NZ Objective 1 Final.pdf (14.2 MB)
Areas of importance for spawning, pupping or egg-laying, and juveniles of New Zealand coastal fish. 

 Coastal Fish NZ Objective 1 Final(Objective 1)
Author: ; Bagley N.W.; Francis M.P.; Griggs L.H.; Hurst R.; Morrison M.A.; Stevenson M.L.;
FishingMethod: ; Seine; trawl;
FMA: FMA1; FMA10; FMA2; FMA3; FMA4; FMA5; FMA6; FMA7; FMA8; FMA9;
ResearchField: Habitat classification; juvinile habitat; literature review; spawning areas; trawl survey;
ScienceStock: Benthic; Iinshore; Middle Depths;
Species: BAR; BCO; ELE; EMA; FLA; GUR; HAK; JDO; JMA; KAH; KIN; LIN; MOK; RCO; SCH; SKI; SNA; SPD; SPE; SPO; SQU; STA; SWA; TAR; TRE; WAR; YEM;
Stock: ; Juvinile; Spawing;
978-1-77665-361-406/09/2016
Title: FAR 2016/48 Assessment of the TRE 1 stocks in 2015.
FAR-2016-48-TRE1-stock-assessment.pdf (2.9 MB)
This report has three parts: an investigation of TRE 1 and 7 stock structure; derivation of CPUE (abundance) indices for the East Northland and Bay of Plenty areas of TRE 1; a stock assessment for the Bay of Plenty area of TRE 1. A viable stock assessment for the Bay of Plenty trevally stock was not possible using the aerial sightings abundance index. Plausible SA results were obtained by fitting only to the trawl CPUE series and catch at-age data, however, further investigation is required.
Author: Bian, R.; Doonan, I.; McKenzie, J.R.; Parsons, D.M.;
ResearchField: CPUE indices; trawl; TRE1; TRE7;
ScienceStock: Inshore;
Species: Trevally;
Stock: TRE1; TRE7;
978-1-77665-016-328/08/2015
Title: Stock assessment of trevally in TRE 7.
FAR-2015-45_TRE7_stock-assessment.pdf (4.9 MB)
A stock assessment was conducted for TRE 7. The assessment estimates that the stock biomass declined considerably during the 1970s and the early 1980s, although stock biomass did not decline below the current interim target biomass level (40% SB0). The stock is projected to remain above the target level under status quo catches.
Author: Kendrick, T.H, Bentley, N.; Langley, A.D.;
ResearchField: interim target biomass; stock assessment; Trevally;
ScienceStock: Inshore;
Species: TRE; Trevally;
Stock: TRE7;
978-0-478-43753-930/09/2014
Title: FAR 2014/52 Age determination protocol for trevally (Pseudocaranx dentex).
FAR_2014_52_2763_INS2012-01 Obj. 1, MS3, RR3 (TRE).pdf (18.4 MB)
This report documents the age determination protocol for trevally, describing the current scientific methods used in New Zealand for otolith preparation and age determination to ensure accuracy and consistency over time. A brief history and the changes in the methodologies used in ageing trevally are reported, and a description of the reference collection, and annotated examples of trevally otolith preparations are also included.
Author: Buckthought, D.; Horn, P.; McKenzie, J.; Ó Maolagáin, C.; Sutton, C.; Walsh, C.;
ResearchField: Age determination protocol;
ScienceStock: TRE;
Species: Trevally;
978-0-478-43715-730/07/2014
Title: FAR 2014/35 Developing indices of relative abundance from observational aerial sightings of inshore pelagic finfish; Part 2, expanding the dataset and producing annual indices for KAH 1 and TRE 1.
FAR_2014_35_2592_SEA2010-17 (Obj. 1-2, MS 4 & 8).pdf (1.1 MB)
Annual indices of relative abundance for trevally and kahawai in the Bay of Plenty were estimated using aerial sightings data to the end of 2010–11. There were insufficient data collected in east Northland so indices were not developed there.
Author: Doonan, I.; Taylor, P.R.;
ResearchField: aerial sightings; Indices of relative abundance;
ScienceStock: KAH; TRE;
Species: Kahawai; trevally;
Stock: KAH1; TRE1;
978-0-478-40090-816/10/2012
Title: Length and age composition of commercial trevally landings in TRE 7, 2009-10.
12_41_FAR_TN2545.pdf (1.9 MB)
Catch sampling for length and age composition was undertaken from the TRE 7 bottom trawl fishery during the 2009–10 fishing year. The fishery comprised a broad range of fish of various sizes and ages, despite more than 80% of the landed catch, by number, being less than 13 years of age. An investigation into spatial differences in length and age found heterogeneity exists within TRE 7, confirming previous findings of an increasing size and age of trevally down a latitudinal cline.
Author: Bian R.; Buckthought D.; McKenzie J.M.; O Maolagain C.; Walsh C.;
FishingMethod: bottom trawl;
ResearchField: 2009-10; age; commercial; composition; composition; landing; landings; Length; TRE; TRE 7; trevally;
ScienceStock: Inshore;
Species: TRE; Trevally;
Stock: TRE; TRE 7;
978-0-477-10503-325/11/2014
Title: FAR 2014/66 Length and age composition of commercial trevally landings in TRE 7, 2012–13.
FAR_2014_66_2834_TRE2012-02 (Obj. 1-3, MS6, RR4).pdf (1.2 MB)
The length frequency/age-length key approach was used in the 2012–13 fishing year to estimate catch-at-age for trevally caught by bottom trawl in TRE 7. There was a high proportion of young trevally but the fishery contained a broad range of fish length and ages, with high estimates of mean length (40.8 cm) and mean age (10.6 years). Spatial differences in length and age compositions were evident between subareas. Spatio-temporal comparisons revealed adequate sample representativeness.
Author: Armiger, H.; Bian, R.; Buckthought, D.; McKenzie, J.M.; Ó Maolagáin, C.; Walsh, C.;
ResearchField: age composition; length frequency;
ScienceStock: TRE;
Species: Trevally;
Stock: TRE 7;
978-0-477-10502-625/11/2014
Title: FAR 2014/65 Length and age composition of commercial trevally landings in TRE 1, 2012–13.
FAR_2014_65_2843_TRE2012-01 (obj. 1-3, MS6).pdf (1.4 MB)
The length frequency and age-length key sampling approach was employed during 2012–13 fishing year to estimate catch-at-age for trevally for the bottom trawl and purse-seine methods in TRE 1. Spatial differences in length and age compositions and growth rates persist between the East Northland/Hauraki Gulf and Bay of Plenty subareas, implying the existence of multiple biological stocks. Spatio-temporal comparisons revealed good sample representativeness. 
Author: Armiger, H.; Bian, R.; Buckthought, D.; McKenzie, J.R.; Ó Maolagáin, C.; Spong, K.; Walsh, C.;
ResearchField: age composition; length frequency;
ScienceStock: TRE;
Species: Trevally;
Stock: TRE 1;
2012/0401/01/2012
Title: Length and age composition of commercial trevally landings in TRE 1, 2008–09
12_04_FAR.pdf (704.1 kb)
Length and age composition of commercial trevally landings in TRE 1, 2008–09
Author: Buckthought, D.; James, G.; Maolagáin, C.; McKenzie, J.; Walsh, C.;
FishingMethod: trawl;
FMA: FMA1;
Project code: PEL2008-03;
ResearchField: Fishery characterisation;
ScienceStock: Inshore;
Species: TRE;
Stock: TRE1;
2010/4101/12/2010
Title: Fishery characterisation and catch-per-unit-effort indices for trevally in TRE 7, 1989–90 to 2007–08.
10_41_FAR.pdf (3.2 MB)
Fishery characterisation and catch-per-unit-effort indices for trevally in TRE 7, 1989–90 to 2007–08
Author: Bentley N.; Kendrick T. H.;
FishingMethod: Bottom Trawling;
ResearchField: catch-per-unit-effort; indices;
ScienceStock: Inshore;
Species: Trevally;
Stock: TRE 7;
2010/2219/08/2010
Title: Length and age composition of commercial trevally landings in TRE 1 and TRE 7, 2007-08
10_22_FAR.pdf (909.1 kb)
Length and age composition of commercial trevally landings in TRE 1 and TRE 7, 2007-08
Author: Blackwell, R.; Buckthought, D.; James, G.D.; McKenzie, J.M.; OMaolagain, C.; Walsh, C.;
FishingMethod: seine; trawl;
FMA: FMA1; FMA7;
Project code: TRE2007-01;
ResearchField: ; length and age;
ScienceStock: inshore;
Species: TRE;
Stock: TRE 1; TRE 7;
2010/0928/05/2010
Title: Length and age composition of commercial trevally landings in TRE 1 and TRE 7, 2006-07
10_09_FAR.pdf (880.1 kb)
Length and age composition of commercial trevally landings in TRE 1 and TRE 7, 2006-07
Author: Blackwell, R.; Buckthought, D.; James, G.D.; McKenzie, J.M.; O'Maolagain, C.; Rush, N.; Walsh, C.;
FishingMethod: seine; trawl;
FMA: FMA1; FMA7; FMA8; FMA9;
Project code: TRE2006-01;
ResearchField: Catch sampling; Fishery characterisation;
ScienceStock: inshore;
Species: TRE;
Stock: TRE1; TRE7;
2009/4901/10/2009
Title: Stock assessment of TRE 7
09_49_FAR.pdf (555.4 kb)
Stock assessment of TRE 7
Author: Langley A.D.; Maunder, M.;
FishingMethod: seine; trawl;
FMA: FMA7; FMA8; FMA9;
Project code: TRE2008/02;
ResearchField: Stock assessment;
ScienceStock: Pelagic;
Species: TRE;
Stock: TRE7;
2009/3101/07/2009
Title: Length and age composition of trevally in commercial landings from TRE 1 and TRE 7, 2005-06
09_31_FAR.pdf (357.4 kb)
Length and age composition of trevally in commercial landings from TRE 1 and TRE 7, 2005-06
Author: Langley A.D.;
FishingMethod: seine; trawl;
FMA: FMA1; FMA7; FMA8; FMA9;
Project code: TRE2005-01;
ResearchField: Catch Sampling; Fishery Characterisation;
ScienceStock: Pelagic;
Species: TRE;
Stock: TRE1; TRE7;
2009/1401/03/2009
Title: Review of length and age sampling for trevally in TRE 1 and TRE 7 from 1997–98 to 2002–03
09_14_FAR.pdf (2.7 MB)
Review of length and age sampling for trevally in TRE 1 and TRE 7 from 1997–98 to 2002–03
Author: McKenzie J.M.; Walsh C.;
FishingMethod: seine; trawl;
FMA: FMA1; FMA7; FMA8; FMA9;
Project code: TRE2004/01; TRE2004/02;
ResearchField: Catch Sampling; Fishery Characterisation;
ScienceStock: Pelagic;
Species: TRE;
Stock: TRE1; TRE7;
2009/0601/02/2009
Title: Characterisation of pelagic fisheries using observer data
09_06_FAR.pdf (1.0 MB)
Characterisation of pelagic fisheries using observer data
Author: Baird S.J.;
FishingMethod: longline; seine; trawl;
Project code: PEL2005/01;
ResearchField: Fishery Characterisation;
ScienceStock: Pelagic;
Species: EMA; JMA; KIN; PIL; SJK; TRE;
2008/4401/07/2008
Title: Standardised CPUE analysis and stock assessment of the west coast trevally fishery (TRE 7)
\2008 FARs\08_44_FAR.pdf (9.2 MB)
Standardised CPUE analysis and stock assessment of the west coast trevally fishery (TRE 7)
Author: McKenzie, A.;
FishingMethod: Trawl;
FMA: FMA7; FMA8; FMA9;
ISSN: 1175-1584;
Project code: TRE2004/02;
ResearchField: CPUE; Stock assessment;
ScienceStock: Pelagic;
Species: TRE;
Stock: TRE7;
2008/3201/06/2008
Title: Factors affecting fish size and landed volumes in the purse-seine and TCEPR charter-boat fisheries in 2004–05 and 2005–06
\2008 FARs\08_32_FAR.pdf (3.6 MB)
Factors affecting fish size and landed volumes in the purse-seine and TCEPR charter-boat fisheries in 2004–05 and 2005–06
Author: Taylor, P. R.;
FishingMethod: Seine;
ISSN: 1175-1584;
Project code: EMA2004/01; JMA2004/01;
ResearchField: Fishery characterisation;
ScienceStock: Pelagic;
Species: EMA; JMA; SKJ; TAR; TRE;
Stock: EMA1; EMA2; EMA7; JMA1; JMA3; JMA7; KAH1; TRE1;
2004/3901/07/2004
Title: Length and age composition of trevally (Pseudocaranx dentex) in commercial landings from the TRE 1 purse-seine fishery, 2002-03
\2004 FARs\04_39_FAR.pdf (356.0 kb)
Length and age composition of trevally (Pseudocaranx dentex) in commercial landings from the TRE 1 purse-seine fishery, 2002-03
Author: Langley, A. D.;
FishingMethod: Seine;
FMA: FMA1;
ISSN: 1175-1584;
Project code: TRE2002/01;
ResearchField: Catch sampling; Life-history characteristics; Population structure;
ScienceStock: Inshore;
Species: TRE;
Stock: TRE1;
2003/4801/10/2003
Title: Length and age composition of trevally (Pseudocaranx georgianus) in commercial landings from the TRE 1 purse-seine fishery, 2001-02
\2003 FARs\03_48_FAR.pdf (404.1 kb)
Length and age composition of trevally (Pseudocaranx georgianus) in commercial landings from the TRE 1 purse-seine fishery, 2001-02
Author: Langley, A. D.;
FMA: FMA1;
ISSN: 1175-1584;
Project code: TRE2001/01;
ResearchField: Catch sampling; Population structure;
ScienceStock: Inshore;
Species: TRE;
Stock: TRE1;
2002/3201/08/2002
Title: Analysis of catch and effort data from the TRE 7 fishery
\2002 FARs\02_32_FAR.pdf (616.5 kb)
Analysis of catch and effort data from the TRE 7 fishery
Author: Langley, A. D.;
FishingMethod: Trawl;
FMA: FMA9;
ISSN: 1175-1584;
ResearchField: CPUE;
ScienceStock: Pelagic;
Species: TRE;
Stock: TRE7;
2002/1901/03/2002
Title: Length and age composition of trevally in commercial landings from TRE 1 and TRE 7, 2000-01
\2002 FARs\02_19_FAR.pdf (814.5 kb)
Length and age composition of trevally in commercial landings from TRE 1 and TRE 7, 2000-01
Author: Langley, A. D.;
FMA: FMA1; FMA8; FMA9;
ISSN: 1175-1584;
ResearchField: Catch sampling; Population structure;
ScienceStock: Pelagic;
Species: TRE;
Stock: TRE1; TRE7;
2001/4201/08/2001
Title: Length and age composition of trevally in commercial landings from TRE 1 and TRE 7, 1999-2000
\2001 FARs\01_42_FARD .pdf (1.2 MB)
Length and age composition of trevally in commercial landings from TRE 1 and TRE 7, 1999-2000
Author: Langley, A. D.;
FMA: FMA1; FMA8; FMA9;
ISSN: 1175-1584;
ResearchField: Catch sampling; Population structure;
ScienceStock: Pelagic;
Species: TRE;
1999/5501/12/1999
Title: Stock assessment of trevally (Caranx georgianus) in TRE 7
\1999 FARDs\99_55_FARD.pdf (940.7 kb)
Stock assessment of trevally (Caranx georgianus) in TRE 7
Author: Hanchet, S. M.;
FishingMethod: Trawl;
FMA: FMA7; FMA8; FMA9;
ISSN: 1175-1584;
ResearchField: Stock assessment;
ScienceStock: Pelagic;
Species: TRE;
Stock: TRE7;
1999/5301/12/1999
Title: Time series of relative abundance indices from aerial sightings data for some important pelagic schooling species
\1999 FARDs\99_53_FARD.pdf (885.2 kb)
Time series of relative abundance indices from aerial sightings data for some important pelagic schooling species
Author: Taylor, P. R.;
ISSN: 1175-1584;
ResearchField: Biomass;
ScienceStock: Pelagic;
Species: EMA; JMA; KAH; SKJ; TRE;
Stock: JMA1; JMA2; JMA3; KAH1; KAH2; KAH3; KAH9; TRE1; TRE2; TRE7;
1999/1301/03/1999
Title: Trevally catch per unit effort in TRE 7
\1999 FARDs\99_13_FARD.pdf (807.4 kb)
Trevally catch per unit effort in TRE 7
Author: Bradford, E.; Francis, M. P.; Paul, L. J.;
FishingMethod: Trawl;
FMA: FMA7; FMA8; FMA9;
ISSN: 1175-1584;
ResearchField: CPUE;
ScienceStock: Pelagic;
Species: TRE;
Stock: TRE7;
1995/0801/05/1995
Title: Trends in pelagic fish abundance from aerial sightings data
\1995 FARDs\95_08_FARD.pdf (1.9 MB)
Trends in pelagic fish abundance from aerial sightings data
Author: Bradford, E.; Taylor, P. R.;
FishingMethod: Seine;
ISSN: 1175-1584;
ResearchField: Biomass;
ScienceStock: Pelagic;
Species: BMA; JMA; KAH; TRE;
1988/2901/12/1988
Title: Trevally
\1988 FARDs\88_29_FARD.pdf (600.3 kb)
Trevally
Author: Gilbert, D. J.;
FishingMethod: Seine; Trawl;
ISSN: 1175-1584;
ResearchField: Fishery characterisation;
ScienceStock: Pelagic;
Species: TRE;