Assessment of interactive acoustic deterrent devices set on trammel nets to reduce dolphin–fishery interactions in the Northern Tyrrhenian Sea
Abstract Dolphin–fishery interaction is a worldwide issue affecting dolphins through bycatch and fishers through catch or gear damages. Concerning the Mediterranean Sea, problematic interactions mainly occur between common bottlenose dolphin and small-scale fisheries. Acoustic Deterrent Devices such...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-11-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-46836-z |
| _version_ | 1827634921028452352 |
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| author | Ilaria Ceciarini Enrica Franchi Francesca Capanni Guia Consales Lorenzo Minoia Stefania Ancora Antonella D’Agostino Alessandro Lucchetti Daniel Li Veli Letizia Marsili |
| author_facet | Ilaria Ceciarini Enrica Franchi Francesca Capanni Guia Consales Lorenzo Minoia Stefania Ancora Antonella D’Agostino Alessandro Lucchetti Daniel Li Veli Letizia Marsili |
| author_sort | Ilaria Ceciarini |
| collection | DOAJ |
| description | Abstract Dolphin–fishery interaction is a worldwide issue affecting dolphins through bycatch and fishers through catch or gear damages. Concerning the Mediterranean Sea, problematic interactions mainly occur between common bottlenose dolphin and small-scale fisheries. Acoustic Deterrent Devices such as pingers, are one of the most widespread measures used in attempts to face this issue. Therefore, the efficiency of interactive pingers (DiD01) in protecting the trammel nets from dolphin interactions was assessed in the Northern Tyrrhenian Sea. From March to October 2021, a total of 139 fishing trials using nets with pingers (TEST) and without pingers (CTRL), respectively n = 97 and n = 42, were carried out. Non-parametric statistic of the Catch per Unit Effort, comparing control and test nets, was not significantly different (p > 0.05) using catches weights (CPUEW) while it was significant (p < 0.01) considering the number of individuals (CPUEN). Moreover, richness and relative abundance of species resulted statistically higher in test nets (p < 0.05). This finding suggests that the absence of dolphin in the neighbourhood of fishing areas thanks to the use of pingers increases the diversity of target species. Catch damages caused by dolphins were statistically higher in nets without pinger than in nets with pinger (p < 0.05). No dolphin bycatch was recorded during fishing operations. |
| first_indexed | 2024-03-09T15:20:03Z |
| format | Article |
| id | doaj.art-f115eb5279ae48c09626570a48c71eda |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-09T15:20:03Z |
| publishDate | 2023-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-f115eb5279ae48c09626570a48c71eda2023-11-26T12:53:07ZengNature PortfolioScientific Reports2045-23222023-11-0113111510.1038/s41598-023-46836-zAssessment of interactive acoustic deterrent devices set on trammel nets to reduce dolphin–fishery interactions in the Northern Tyrrhenian SeaIlaria Ceciarini0Enrica Franchi1Francesca Capanni2Guia Consales3Lorenzo Minoia4Stefania Ancora5Antonella D’Agostino6Alessandro Lucchetti7Daniel Li Veli8Letizia Marsili9Department of Physical Sciences, Earth and Environment, University of SienaDepartment of Physical Sciences, Earth and Environment, University of SienaDepartment of Physical Sciences, Earth and Environment, University of SienaDepartment of Physical Sciences, Earth and Environment, University of SienaDepartment of Physical Sciences, Earth and Environment, University of SienaDepartment of Physical Sciences, Earth and Environment, University of SienaDepartment of Business and Quantitative Studies, University of Naples ParthenopeInstitute for Biological Resources and Marine Biotechnologies (IRBIM), National Research Council (CNR)Institute for Biological Resources and Marine Biotechnologies (IRBIM), National Research Council (CNR)Department of Physical Sciences, Earth and Environment, University of SienaAbstract Dolphin–fishery interaction is a worldwide issue affecting dolphins through bycatch and fishers through catch or gear damages. Concerning the Mediterranean Sea, problematic interactions mainly occur between common bottlenose dolphin and small-scale fisheries. Acoustic Deterrent Devices such as pingers, are one of the most widespread measures used in attempts to face this issue. Therefore, the efficiency of interactive pingers (DiD01) in protecting the trammel nets from dolphin interactions was assessed in the Northern Tyrrhenian Sea. From March to October 2021, a total of 139 fishing trials using nets with pingers (TEST) and without pingers (CTRL), respectively n = 97 and n = 42, were carried out. Non-parametric statistic of the Catch per Unit Effort, comparing control and test nets, was not significantly different (p > 0.05) using catches weights (CPUEW) while it was significant (p < 0.01) considering the number of individuals (CPUEN). Moreover, richness and relative abundance of species resulted statistically higher in test nets (p < 0.05). This finding suggests that the absence of dolphin in the neighbourhood of fishing areas thanks to the use of pingers increases the diversity of target species. Catch damages caused by dolphins were statistically higher in nets without pinger than in nets with pinger (p < 0.05). No dolphin bycatch was recorded during fishing operations.https://doi.org/10.1038/s41598-023-46836-z |
| spellingShingle | Ilaria Ceciarini Enrica Franchi Francesca Capanni Guia Consales Lorenzo Minoia Stefania Ancora Antonella D’Agostino Alessandro Lucchetti Daniel Li Veli Letizia Marsili Assessment of interactive acoustic deterrent devices set on trammel nets to reduce dolphin–fishery interactions in the Northern Tyrrhenian Sea Scientific Reports |
| title | Assessment of interactive acoustic deterrent devices set on trammel nets to reduce dolphin–fishery interactions in the Northern Tyrrhenian Sea |
| title_full | Assessment of interactive acoustic deterrent devices set on trammel nets to reduce dolphin–fishery interactions in the Northern Tyrrhenian Sea |
| title_fullStr | Assessment of interactive acoustic deterrent devices set on trammel nets to reduce dolphin–fishery interactions in the Northern Tyrrhenian Sea |
| title_full_unstemmed | Assessment of interactive acoustic deterrent devices set on trammel nets to reduce dolphin–fishery interactions in the Northern Tyrrhenian Sea |
| title_short | Assessment of interactive acoustic deterrent devices set on trammel nets to reduce dolphin–fishery interactions in the Northern Tyrrhenian Sea |
| title_sort | assessment of interactive acoustic deterrent devices set on trammel nets to reduce dolphin fishery interactions in the northern tyrrhenian sea |
| url | https://doi.org/10.1038/s41598-023-46836-z |
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