Peruvian bycatch in SSF and bycatch reduction technology testing
Data Set (DS) | Pacific Islands Fisheries Science Center (PIFSC)GUID: gov.noaa.nmfs.inport:47721 | Updated: October 20, 2022 | Published / External
Summary
Short Citation
Pacific Islands Fisheries Science Center, 2024: Peruvian bycatch in SSF and bycatch reduction technology testing, https://www.fisheries.noaa.gov/inport/item/47721.
Full Citation Examples
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.
Distribution Information
No Distributions available.
Access Constraints:At a minimum this will require signing a PIFSC non-disclosure statement for fisheries confidential data.
Child Items
No Child Items for this record.
Contact Information
Point of Contact
John H Wang
john.wang@noaa.gov
(808)725-5370
Metadata Contact
John H Wang
john.wang@noaa.gov
(808)725-5370
Extents
Peru
2013-01-01 - 2017-01-01
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 |
|---|---|
| UNCONTROLLED | |
| 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 |
|---|---|
| UNCONTROLLED | |
| 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
| 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
| 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 |
| Email Address: | pifsc.info@noaa.gov |
| Phone: | 808-725-5360 |
| URL: | https://www.pifsc.noaa.gov |
| Business Hours: | 8:00 a.m. - 4:30 p.m. |
Metadata Contact
| 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 |
Point of Contact
| 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
| Description |
Peru |
|
|---|---|---|
Extent Group 1 / Time Frame 1
| 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 |
|---|---|
| GUID: | gov.noaa.nmfs.inport:47721 |
| Metadata Record Created By: | John H Wang |
| Metadata Record Created: | 2017-11-01 16:33+0000 |
| Metadata Record Last Modified By: | SysAdmin InPortAdmin |
| Metadata Record Last Modified: | 2022-10-20 02:17+0000 |
| Metadata Record Published: | 2020-03-19 |
| Owner Org: | PIFSC |
| Metadata Publication Status: | Published Externally |
| Do Not Publish?: | N |
| Metadata Last Review Date: | 2020-03-19 |
| Metadata Review Frequency: | 1 Year |
| Metadata Next Review Date: | 2021-03-19 |