Short Citation:
Pacific Islands Fisheries Science Center, 2021: Peruvian bycatch in SSF and bycatch reduction technology testing, https://www.fisheries.noaa.gov/inport/item/47721.

Item Identification

Title: Peruvian bycatch in SSF and bycatch reduction technology testing
Status: Completed
Abstract:

Bycatch in net fisheries is recognized as a major source of mortality for many marine species, including seabirds. Few mitigation solutions, however, have been identified. We assessed the effectiveness of illuminating fishing nets with green light emitting diodes (LEDs) to reduce the incidental capture of seabirds. Experiments were conducted in the demersal, setnet fishery of Constante, Peru and compared 114 pairs of control and illuminated nets. We observed captures of a total of 49 seabirds (Phalacrocorax bougainvillii and  Sula variegata), with 39 caught in control nets and 10 caught in illuminated nets. Illuminated nets had a statistically significant 73.5% decline in seabird interactions when compared with non-illuminated nets. This study showed that net illumination reduces seabird bycatch.

In addition, we deployed light emitting diodes (LEDs) - a visual cue - on the floatlines of paired gillnets (control vs illuminated net) during 864 fishing sets on small-scale vessels departing from three Peruvian ports between 2015 and 2018. Standardized bycatch probability for sea turtles and cetaceans as well as standardized catch per unit effort (CPUE) of target species were analysed for illuminated and control nets using a generalised linear mixed-effects model (GLMM). For illuminated nets, bycatch probability was reduced by up to 80% for sea turtles and small cetaceans in comparison to non-illuminated, control nets. Target species CPUE was not negatively affected by the presence of LEDs.

These studies highlight the efficacy of net illumination as a multi-taxa BRT for small-scale gillnet fisheries in Peru. These results are promising given the global ubiquity of small-scale net fisheries, the relatively low cost of LEDs and the current lack of alternate solutions to bycatch.

Purpose:

Development of by catch reduction technology

Keywords

Theme Keywords

Thesaurus Keyword
None bycatch
None Bycatch Team
None FRMD
None gillnets
None IFP
None marine mammal
None PIFSC
None sea turtles
None seabirds
None small-scale fisheries

Spatial Keywords

Thesaurus Keyword
None Peru

Physical Location

Organization: Pacific Islands Fisheries Science Center
City: Honolulu
State/Province: HI
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: MS Excel Spreadsheet
Maintenance Frequency: None Planned
Maintenance Note:

Complete

Data Presentation Form: Table (digital)

Support Roles

Data Steward

CC ID: 596451
Date Effective From: 2017-11-01
Date Effective To:
Contact (Person): Wang, John H
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: john.wang@noaa.gov
Phone: (808)725-5370

Distributor

CC ID: 596449
Date Effective From: 2017-11-01
Date Effective To:
Contact (Organization): Pacific Islands Fisheries Science Center (PIFSC)
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Phone: 808-725-5300
URL: http://www.pifsc.noaa.gov
Business Hours: 8:00 a.m. - 4:30 p.m.

Metadata Contact

CC ID: 900403
Date Effective From: 2019-01-01
Date Effective To:
Contact (Person): Wang, John H
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: john.wang@noaa.gov
Phone: (808)725-5370

Metadata Contact

CC ID: 596452
Date Effective From: 2017-11-01
Date Effective To: 2018-12-31
Contact (Person): Tagami, Darryl T
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: darryl.tagami@noaa.gov
Phone: (808)725-5745
Business Hours: 8:00 AM - 4:30 PM

Point of Contact

CC ID: 596450
Date Effective From: 2017-11-01
Date Effective To:
Contact (Person): Wang, John H
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: john.wang@noaa.gov
Phone: (808)725-5370

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 596464
Description

Peru

Extent Group 1 / Time Frame 1

CC ID: 596466
Time Frame Type: Range
Start: 2013-01-01
End: 2017-01-01

Access Information

Security Class: Sensitive
Data Access Procedure:

Send written request to PIFSC.

Data Access Constraints:

At a minimum this will require signing a PIFSC non-disclosure statement for fisheries confidential data.

Metadata Access Constraints:

none

Metadata Use Constraints:

none

Data Quality

Quality Control Procedures Employed:

QC review prior to data entry. Further QC after data entry.

Data Management

Have Resources for Management of these Data Been Identified?: Yes
Approximate Percentage of Budget for these Data Devoted to Data Management: Unknown
Do these Data Comply with the Data Access Directive?: Yes
Is Access to the Data Limited Based on an Approved Waiver?: Yes
If Distributor (Data Hosting Service) is Needed, Please Indicate: No
Approximate Delay Between Data Collection and Dissemination: 1 year
Actual or Planned Long-Term Data Archive Location: To Be Determined
If To Be Determined, Unable to Archive, or No Archiving Intended, Explain:

NCEI-MD does not accept sensitive data at this time

Approximate Delay Between Data Collection and Archiving: unknown
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

Data owner performs regular scheduled back-ups.

Lineage

Lineage Statement:

Data was collected in the field by Peruvian collaborators.

Catalog Details

Catalog Item ID: 47721
Metadata Record Created By: John H Wang
Metadata Record Created: 2017-11-01 16:33+0000
Metadata Record Last Modified By: John H Wang
Metadata Record Last Modified: 2020-03-19 21:15+0000
Metadata Record Published: 2020-03-19
Owner Org: PIFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2021-03-20