Data from Long et al. 2012 JEMBE: Cannibalism in red king crab, Paralithodes camtschaticus (Tilesius, 1815): Effects of habitat type and predator density on predator functional response
Red king crab, Paralithodes camtschaticus, an important fishery species in Alaska, exhibits cannibalism both within and among age classes. Cannibalism in crab species can be an important determinant of recruitment success, and this might be especially important in king crab because year-0 and year-1...
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Online Access: | https://dx.doi.org/10.6084/m9.figshare.12780440.v1 https://figshare.com/articles/Data_from_Long_et_al_2012_JEMBE_Cannibalism_in_red_king_crab_Paralithodes_camtschaticus_Tilesius_1815_Effects_of_habitat_type_and_predator_density_on_predator_functional_response/12780440/1 |
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ftdatacite:10.6084/m9.figshare.12780440.v1 2023-05-15T17:54:37+02:00 Data from Long et al. 2012 JEMBE: Cannibalism in red king crab, Paralithodes camtschaticus (Tilesius, 1815): Effects of habitat type and predator density on predator functional response W. Christopher Long 2020 https://dx.doi.org/10.6084/m9.figshare.12780440.v1 https://figshare.com/articles/Data_from_Long_et_al_2012_JEMBE_Cannibalism_in_red_king_crab_Paralithodes_camtschaticus_Tilesius_1815_Effects_of_habitat_type_and_predator_density_on_predator_functional_response/12780440/1 unknown figshare https://dx.doi.org/10.1016/j.jembe.2012.04.019 https://dx.doi.org/10.6084/m9.figshare.12780440 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY 60207 Population Ecology FOS Biological sciences dataset Dataset 2020 ftdatacite https://doi.org/10.6084/m9.figshare.12780440.v1 https://doi.org/10.1016/j.jembe.2012.04.019 https://doi.org/10.6084/m9.figshare.12780440 2021-11-05T12:55:41Z Red king crab, Paralithodes camtschaticus, an important fishery species in Alaska, exhibits cannibalism both within and among age classes. Cannibalism in crab species can be an important determinant of recruitment success, and this might be especially important in king crab because year-0 and year-1 crab occupy the same habitat types in the wild. In this study we used laboratory experiments to determine the predator functional response, or the effect of prey density on predation rates of year-1 crab preying on year-0 crab in three different habitat types: Sand, which was unstructured soft sediment, Whole Shell, which was whole clam valves, and Shell Hash, which was smaller pieces of crushed shell. We also examined how predator density (one or two predators) affects the functional response. The data was fit to Type I, or density independent, Type II, or inversely density dependent, and Type III, or density dependent, functional response models and the best fit model was chosen using Akaike's information criterion. The functional response was a Type II in all habitat types; however, the predation rate was lower at all prey densities in the Whole Shell habitat than in Shell Hash and Sand. The functional response was a Type II at both predator densities as well. The presence of a second predator decreased both the attack rate and the handling time, resulting in slightly lower predation rates at low prey densities, and slightly higher predation rates at high prey densities when compared to the single predator treatment. This indicates a low level of predator interference. This work has implications for potential stock enhancement activities, as year-1 crab could inhibit enhancement success though cannibalism of introduced year-0 crab, especially given the destabilizing nature of the Type II functional response. A potential solution would be to enhance a given area only every other year to give previous cohorts a chance to start podding in less complex habitats. Future work should examine whether the pres- ence of alternative prey changes the functional response to a Type III, as this would give year-0 crabs a low‐density refuge from predation. Dataset Paralithodes camtschaticus Red king crab Alaska DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
60207 Population Ecology FOS Biological sciences |
spellingShingle |
60207 Population Ecology FOS Biological sciences W. Christopher Long Data from Long et al. 2012 JEMBE: Cannibalism in red king crab, Paralithodes camtschaticus (Tilesius, 1815): Effects of habitat type and predator density on predator functional response |
topic_facet |
60207 Population Ecology FOS Biological sciences |
description |
Red king crab, Paralithodes camtschaticus, an important fishery species in Alaska, exhibits cannibalism both within and among age classes. Cannibalism in crab species can be an important determinant of recruitment success, and this might be especially important in king crab because year-0 and year-1 crab occupy the same habitat types in the wild. In this study we used laboratory experiments to determine the predator functional response, or the effect of prey density on predation rates of year-1 crab preying on year-0 crab in three different habitat types: Sand, which was unstructured soft sediment, Whole Shell, which was whole clam valves, and Shell Hash, which was smaller pieces of crushed shell. We also examined how predator density (one or two predators) affects the functional response. The data was fit to Type I, or density independent, Type II, or inversely density dependent, and Type III, or density dependent, functional response models and the best fit model was chosen using Akaike's information criterion. The functional response was a Type II in all habitat types; however, the predation rate was lower at all prey densities in the Whole Shell habitat than in Shell Hash and Sand. The functional response was a Type II at both predator densities as well. The presence of a second predator decreased both the attack rate and the handling time, resulting in slightly lower predation rates at low prey densities, and slightly higher predation rates at high prey densities when compared to the single predator treatment. This indicates a low level of predator interference. This work has implications for potential stock enhancement activities, as year-1 crab could inhibit enhancement success though cannibalism of introduced year-0 crab, especially given the destabilizing nature of the Type II functional response. A potential solution would be to enhance a given area only every other year to give previous cohorts a chance to start podding in less complex habitats. Future work should examine whether the pres- ence of alternative prey changes the functional response to a Type III, as this would give year-0 crabs a low‐density refuge from predation. |
format |
Dataset |
author |
W. Christopher Long |
author_facet |
W. Christopher Long |
author_sort |
W. Christopher Long |
title |
Data from Long et al. 2012 JEMBE: Cannibalism in red king crab, Paralithodes camtschaticus (Tilesius, 1815): Effects of habitat type and predator density on predator functional response |
title_short |
Data from Long et al. 2012 JEMBE: Cannibalism in red king crab, Paralithodes camtschaticus (Tilesius, 1815): Effects of habitat type and predator density on predator functional response |
title_full |
Data from Long et al. 2012 JEMBE: Cannibalism in red king crab, Paralithodes camtschaticus (Tilesius, 1815): Effects of habitat type and predator density on predator functional response |
title_fullStr |
Data from Long et al. 2012 JEMBE: Cannibalism in red king crab, Paralithodes camtschaticus (Tilesius, 1815): Effects of habitat type and predator density on predator functional response |
title_full_unstemmed |
Data from Long et al. 2012 JEMBE: Cannibalism in red king crab, Paralithodes camtschaticus (Tilesius, 1815): Effects of habitat type and predator density on predator functional response |
title_sort |
data from long et al. 2012 jembe: cannibalism in red king crab, paralithodes camtschaticus (tilesius, 1815): effects of habitat type and predator density on predator functional response |
publisher |
figshare |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.12780440.v1 https://figshare.com/articles/Data_from_Long_et_al_2012_JEMBE_Cannibalism_in_red_king_crab_Paralithodes_camtschaticus_Tilesius_1815_Effects_of_habitat_type_and_predator_density_on_predator_functional_response/12780440/1 |
genre |
Paralithodes camtschaticus Red king crab Alaska |
genre_facet |
Paralithodes camtschaticus Red king crab Alaska |
op_relation |
https://dx.doi.org/10.1016/j.jembe.2012.04.019 https://dx.doi.org/10.6084/m9.figshare.12780440 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.12780440.v1 https://doi.org/10.1016/j.jembe.2012.04.019 https://doi.org/10.6084/m9.figshare.12780440 |
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1766162411241340928 |