Exoskeleton dissolution with mechanoreceptor damage in larval Dungeness crab related to severity of present-day ocean acidification vertical gradients
Ocean acidification (OA) along the US West Coast is intensifying faster than observed in the global ocean. This is particularly true in nearshore regions (<200 m) that experience a lower buffering capacity while at the same time providing important habitats for ecologically and economically signi...
Published in: | Science of The Total Environment |
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Language: | English |
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2020
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Online Access: | http://hdl.handle.net/10026.1/16753 https://doi.org/10.1016/j.scitotenv.2020.136610 |
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ftunivplympearl:oai:pearl.plymouth.ac.uk:10026.1/16753 2024-06-09T07:48:46+00:00 Exoskeleton dissolution with mechanoreceptor damage in larval Dungeness crab related to severity of present-day ocean acidification vertical gradients Bednaršek, N Feely, RA Beck, MW Alin, SR Siedlecki, SA Calosi, P Norton, EL Saenger, C Štrus, J Greeley, D Nezlin, NP Roethler, M Spicer, JI 2020-05-10 0-0 Print-Electronic application/pdf http://hdl.handle.net/10026.1/16753 https://doi.org/10.1016/j.scitotenv.2020.136610 en eng Elsevier BV Netherlands ISSN:0048-9697 ISSN:1879-1026 E-ISSN:1879-1026 0048-9697 1879-1026 136610 http://hdl.handle.net/10026.1/16753 doi:10.1016/j.scitotenv.2020.136610 2021-1-22 Not known Dungeness crab Larval sensitivity Global climate change Ocean acidification Exoskeleton structure Dissolution Mechanoreccptor damage journal-article Article 2020 ftunivplympearl https://doi.org/10.1016/j.scitotenv.2020.136610 2024-05-14T23:44:04Z Ocean acidification (OA) along the US West Coast is intensifying faster than observed in the global ocean. This is particularly true in nearshore regions (<200 m) that experience a lower buffering capacity while at the same time providing important habitats for ecologically and economically significant species. While the literature on the effects of OA from laboratory experiments is voluminous, there is little understanding of present-day OA in-situ effects on marine life. Dungeness crab (Metacarcinus magister) is perennially one of the most valuable commercial and recreational fisheries. We focused on establishing OA-related vulnerability of larval crustacean based on mineralogical and elemental carapace to external and internal carapace dissolution by using a combination of different methods ranging from scanning electron microscopy, energy dispersive X-ray spectroscopy, elemental mapping and X-ray diffraction. By integrating carapace features with the chemical observations and biogeochemical model hindcast, we identify the occurrence of external carapace dissolution related to the steepest Ω calcite gradients (∆Ωcal,60) in the water column. Dissolution features are observed across the carapace, pereopods (legs), and around the calcified areas surrounding neuritic canals of mechanoreceptors. The carapace dissolution is the most extensive in the coastal habitats under prolonged (1-month) long exposure, as demonstrated by the use of the model hindcast. Such dissolution has a potential to destabilize mechanoreceptors with important sensory and behavioral functions, a pathway of sensitivity to OA. Carapace dissolution is negatively related to crab larval width, demonstrating a basis for energetic trade-offs. Using a retrospective prediction from a regression models, we estimate an 8.3% increase in external carapace dissolution over the last two decades and identified a set of affected OA-related sublethal pathways to inform future risk assessment studies of Dungeness crabs. Article in Journal/Newspaper Ocean acidification PEARL (Plymouth Electronic Archiv & ResearchLibrary, Plymouth University) Science of The Total Environment 716 136610 |
institution |
Open Polar |
collection |
PEARL (Plymouth Electronic Archiv & ResearchLibrary, Plymouth University) |
op_collection_id |
ftunivplympearl |
language |
English |
topic |
Dungeness crab Larval sensitivity Global climate change Ocean acidification Exoskeleton structure Dissolution Mechanoreccptor damage |
spellingShingle |
Dungeness crab Larval sensitivity Global climate change Ocean acidification Exoskeleton structure Dissolution Mechanoreccptor damage Bednaršek, N Feely, RA Beck, MW Alin, SR Siedlecki, SA Calosi, P Norton, EL Saenger, C Štrus, J Greeley, D Nezlin, NP Roethler, M Spicer, JI Exoskeleton dissolution with mechanoreceptor damage in larval Dungeness crab related to severity of present-day ocean acidification vertical gradients |
topic_facet |
Dungeness crab Larval sensitivity Global climate change Ocean acidification Exoskeleton structure Dissolution Mechanoreccptor damage |
description |
Ocean acidification (OA) along the US West Coast is intensifying faster than observed in the global ocean. This is particularly true in nearshore regions (<200 m) that experience a lower buffering capacity while at the same time providing important habitats for ecologically and economically significant species. While the literature on the effects of OA from laboratory experiments is voluminous, there is little understanding of present-day OA in-situ effects on marine life. Dungeness crab (Metacarcinus magister) is perennially one of the most valuable commercial and recreational fisheries. We focused on establishing OA-related vulnerability of larval crustacean based on mineralogical and elemental carapace to external and internal carapace dissolution by using a combination of different methods ranging from scanning electron microscopy, energy dispersive X-ray spectroscopy, elemental mapping and X-ray diffraction. By integrating carapace features with the chemical observations and biogeochemical model hindcast, we identify the occurrence of external carapace dissolution related to the steepest Ω calcite gradients (∆Ωcal,60) in the water column. Dissolution features are observed across the carapace, pereopods (legs), and around the calcified areas surrounding neuritic canals of mechanoreceptors. The carapace dissolution is the most extensive in the coastal habitats under prolonged (1-month) long exposure, as demonstrated by the use of the model hindcast. Such dissolution has a potential to destabilize mechanoreceptors with important sensory and behavioral functions, a pathway of sensitivity to OA. Carapace dissolution is negatively related to crab larval width, demonstrating a basis for energetic trade-offs. Using a retrospective prediction from a regression models, we estimate an 8.3% increase in external carapace dissolution over the last two decades and identified a set of affected OA-related sublethal pathways to inform future risk assessment studies of Dungeness crabs. |
format |
Article in Journal/Newspaper |
author |
Bednaršek, N Feely, RA Beck, MW Alin, SR Siedlecki, SA Calosi, P Norton, EL Saenger, C Štrus, J Greeley, D Nezlin, NP Roethler, M Spicer, JI |
author_facet |
Bednaršek, N Feely, RA Beck, MW Alin, SR Siedlecki, SA Calosi, P Norton, EL Saenger, C Štrus, J Greeley, D Nezlin, NP Roethler, M Spicer, JI |
author_sort |
Bednaršek, N |
title |
Exoskeleton dissolution with mechanoreceptor damage in larval Dungeness crab related to severity of present-day ocean acidification vertical gradients |
title_short |
Exoskeleton dissolution with mechanoreceptor damage in larval Dungeness crab related to severity of present-day ocean acidification vertical gradients |
title_full |
Exoskeleton dissolution with mechanoreceptor damage in larval Dungeness crab related to severity of present-day ocean acidification vertical gradients |
title_fullStr |
Exoskeleton dissolution with mechanoreceptor damage in larval Dungeness crab related to severity of present-day ocean acidification vertical gradients |
title_full_unstemmed |
Exoskeleton dissolution with mechanoreceptor damage in larval Dungeness crab related to severity of present-day ocean acidification vertical gradients |
title_sort |
exoskeleton dissolution with mechanoreceptor damage in larval dungeness crab related to severity of present-day ocean acidification vertical gradients |
publisher |
Elsevier BV |
publishDate |
2020 |
url |
http://hdl.handle.net/10026.1/16753 https://doi.org/10.1016/j.scitotenv.2020.136610 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
ISSN:0048-9697 ISSN:1879-1026 E-ISSN:1879-1026 0048-9697 1879-1026 136610 http://hdl.handle.net/10026.1/16753 doi:10.1016/j.scitotenv.2020.136610 |
op_rights |
2021-1-22 Not known |
op_doi |
https://doi.org/10.1016/j.scitotenv.2020.136610 |
container_title |
Science of The Total Environment |
container_volume |
716 |
container_start_page |
136610 |
_version_ |
1801380642545467392 |