The repulsive and feeding-deterrent effects of electropositive metals on juvenile sandbar sharks (Carcharhinus plumbeus)
Reducing shark bycatch and depredation (i.e., damage caused by sharks to gear, bait, and desired fish species) in pelagic longline fisheries targeting tunas and swordfish is a priority. Electropositive metals (i.e., a mixture of the lanthanide elements lanthanum, cerium, neodymium, and praseodymium)...
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ftaquaticcommons:oai:generic.eprints.org:8786 2023-05-15T18:51:07+02:00 The repulsive and feeding-deterrent effects of electropositive metals on juvenile sandbar sharks (Carcharhinus plumbeus) Brill, Richard Bushnell, Peter Smith, Leonie Speaks, Coley Sundaram, Rumya Stroud, Eric Wang, John 2009 application/pdf http://aquaticcommons.org/8786/ http://fishbull.noaa.gov1073/brill.pdf http://aquaticcommons.org/8786/1/brill_Fish_Bull_2009.pdf en eng http://aquaticcommons.org/8786/1/brill_Fish_Bull_2009.pdf Brill, Richard and Bushnell, Peter and Smith, Leonie and Speaks, Coley and Sundaram, Rumya and Stroud, Eric and Wang, John (2009) The repulsive and feeding-deterrent effects of electropositive metals on juvenile sandbar sharks (Carcharhinus plumbeus). Fishery Bulletin, 107(3), pp. 298-307. Biology Ecology Fisheries Article PeerReviewed 2009 ftaquaticcommons 2020-02-27T09:23:14Z Reducing shark bycatch and depredation (i.e., damage caused by sharks to gear, bait, and desired fish species) in pelagic longline fisheries targeting tunas and swordfish is a priority. Electropositive metals (i.e., a mixture of the lanthanide elements lanthanum, cerium, neodymium, and praseodymium) have been shown to deter spiny dogfish (Squalus acanthias, primarily a coastal species) from attacking bait, presumably because of interactions with the electroreceptive system of this shark. We undertook to determine the possible effectiveness of electropositive metals for reducing the interactions of pelagic sharks with longline gear, using sandbar sharks (Carcharhinus plumbeus, family Carcharhinidae) as a model species. The presence of electropositive metal deterred feeding in groups of juvenile sandbar sharks and altered the swimming patterns of individuals in the absence of food motivation (these individuals generally avoided approaching electropositive metal closer than ~100 cm). The former effect was relatively short-lived however; primarily (we assume) because competition with other individuals increased feeding motivation. In field trials with bottom longline gear, electropositive metal placed within ~10 cm of the hooks reduced the catch of sandbar sharks by approximately two thirds, compared to the catch on hooks in the proximity of plastic pieces of similar dimensions. Electropositive metals therefore appear to have the potential to reduce shark interactions in pelagic longline fisheries, although the optimal mass, shape, composition, and distance to baited hooks remain to be determined. Article in Journal/Newspaper spiny dogfish Squalus acanthias International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons |
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Open Polar |
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International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons |
op_collection_id |
ftaquaticcommons |
language |
English |
topic |
Biology Ecology Fisheries |
spellingShingle |
Biology Ecology Fisheries Brill, Richard Bushnell, Peter Smith, Leonie Speaks, Coley Sundaram, Rumya Stroud, Eric Wang, John The repulsive and feeding-deterrent effects of electropositive metals on juvenile sandbar sharks (Carcharhinus plumbeus) |
topic_facet |
Biology Ecology Fisheries |
description |
Reducing shark bycatch and depredation (i.e., damage caused by sharks to gear, bait, and desired fish species) in pelagic longline fisheries targeting tunas and swordfish is a priority. Electropositive metals (i.e., a mixture of the lanthanide elements lanthanum, cerium, neodymium, and praseodymium) have been shown to deter spiny dogfish (Squalus acanthias, primarily a coastal species) from attacking bait, presumably because of interactions with the electroreceptive system of this shark. We undertook to determine the possible effectiveness of electropositive metals for reducing the interactions of pelagic sharks with longline gear, using sandbar sharks (Carcharhinus plumbeus, family Carcharhinidae) as a model species. The presence of electropositive metal deterred feeding in groups of juvenile sandbar sharks and altered the swimming patterns of individuals in the absence of food motivation (these individuals generally avoided approaching electropositive metal closer than ~100 cm). The former effect was relatively short-lived however; primarily (we assume) because competition with other individuals increased feeding motivation. In field trials with bottom longline gear, electropositive metal placed within ~10 cm of the hooks reduced the catch of sandbar sharks by approximately two thirds, compared to the catch on hooks in the proximity of plastic pieces of similar dimensions. Electropositive metals therefore appear to have the potential to reduce shark interactions in pelagic longline fisheries, although the optimal mass, shape, composition, and distance to baited hooks remain to be determined. |
format |
Article in Journal/Newspaper |
author |
Brill, Richard Bushnell, Peter Smith, Leonie Speaks, Coley Sundaram, Rumya Stroud, Eric Wang, John |
author_facet |
Brill, Richard Bushnell, Peter Smith, Leonie Speaks, Coley Sundaram, Rumya Stroud, Eric Wang, John |
author_sort |
Brill, Richard |
title |
The repulsive and feeding-deterrent effects of electropositive metals on juvenile sandbar sharks (Carcharhinus plumbeus) |
title_short |
The repulsive and feeding-deterrent effects of electropositive metals on juvenile sandbar sharks (Carcharhinus plumbeus) |
title_full |
The repulsive and feeding-deterrent effects of electropositive metals on juvenile sandbar sharks (Carcharhinus plumbeus) |
title_fullStr |
The repulsive and feeding-deterrent effects of electropositive metals on juvenile sandbar sharks (Carcharhinus plumbeus) |
title_full_unstemmed |
The repulsive and feeding-deterrent effects of electropositive metals on juvenile sandbar sharks (Carcharhinus plumbeus) |
title_sort |
repulsive and feeding-deterrent effects of electropositive metals on juvenile sandbar sharks (carcharhinus plumbeus) |
publishDate |
2009 |
url |
http://aquaticcommons.org/8786/ http://fishbull.noaa.gov1073/brill.pdf http://aquaticcommons.org/8786/1/brill_Fish_Bull_2009.pdf |
genre |
spiny dogfish Squalus acanthias |
genre_facet |
spiny dogfish Squalus acanthias |
op_relation |
http://aquaticcommons.org/8786/1/brill_Fish_Bull_2009.pdf Brill, Richard and Bushnell, Peter and Smith, Leonie and Speaks, Coley and Sundaram, Rumya and Stroud, Eric and Wang, John (2009) The repulsive and feeding-deterrent effects of electropositive metals on juvenile sandbar sharks (Carcharhinus plumbeus). Fishery Bulletin, 107(3), pp. 298-307. |
_version_ |
1766244916295368704 |