Port-Based Data Collection and Specimen Retention Programme
This is the final report for INT2024-02 Port-Based Data Collection and Specimen Retention Programme Pilot Study. Published October 2025.

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Summary 

Between February and June 2025, INT2024-02 pilot study assessed the feasibility of a port-based data collection and specimen retention programme aimed at closing data gaps in New Zealand’s inshore fisheries. These gaps have emerged with the adoption of electronic monitoring (EM), which, while efficient, have reduced access to biological samples and operational data traditionally collected by at sea  observers.

The pilot’s objectives included:

  • Testing the project design developed in Stage 1
  • Facilitating the collection and identification of bycaught seabirds and corals
  • Documenting fishing gear and mitigation configurations and specimens
  • Evaluating and reporting on pilot results with recommendations for optimised data collection
  • Assessing the logistical viability of land based coordination for specimen retention and shipment

Supplementary data collection is essential, as accurate identification of bycaught seabirds and coral species often require physical specimens to confirm species level taxonomy. Specimens provide biological insights on age, sex, body condition, diet and injuries sustained, this cannot be gleaned from EM alone.

Furthermore, documenting the specifications of fishing gear, mitigation devices and practices is crucial for understanding factors contributing to protected species interactions. These insights are key to informing risk reduction strategies and engagement through the Liaison Programme (MIT2024-01).

Ten vessels participated across seven ports in Fishery Management Area 1 (FMA1):

  • One bottom trawler (BT)
  • Two surface longliners (SLL)
  • Seven bottom longliners (BLL)

Fishers were provided with specimen retention kits, authority to retain under the Wildlife Act 1953 and guidance material on handling, storage and retention procedures. Samples were retained onboard, documented, collected, and shipped, while maintaining clear tracking and communication at all steps.

A total of 10 bagged specimens were retained:

  • Eight bags of coral, some bags contained multiple samples
  • Two seabirds
  • No BT and SLL vessels bycaught coral or seabirds for retention
  • BLL vessels bycaught both coral and seabirds which were retained and collected

Key fishing operation insights:

  • 57%, 4 out of 7 BLL vessels did not maintain up-to-date bottle sink rate records
  • 44% of BLL minimised light, 33% did not manage it, 22% cited the need for lighting
  • All BLL vessels deployed tori lines, though some required basic maintenance
  • Common gear configurations included Mustad 17/18 hooks and mono mainlines (1.8–2.5mm)
  • Fishers expressed a strong interest in improved ID tools, and more effective bird deterrents

The pilot demonstrated that port-based specimen retention and data collection is operationally viable. It also highlighted the importance of building trust, and tailoring outreach materials specific to inshore fisheries. This pilot model is scalable, and capable of delivering specimen retention and operational data on fishing and mitigation gear.

Publication information

Blommaart-Klay, A. (2025). INT2024-02 Port-Based Data Collection and Specimen Retention Programme Pilot Study. Report for the Conservation Services Programme, Department of Conservation. 45 p.