The invasive red king crab (Paralithodes camtschaticus): Mortality, individual growth and dispersal in Norwegian waters
The papers of this thesis are not available in Munin: 1. Windsland, K., Hvingel, C., Nilssen, E. M., Sundet, J. H.: 'Evaluation of von Bertalanffy growth curves for the introduced red king crab (Paralithodes camtschaticus) in Norwegian waters', Fisheries Research (2013), vol. 145:15-21. Av...
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UiT The Arctic University of Norway
2014
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Online Access: | https://hdl.handle.net/10037/6735 |
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ftunivtroemsoe:oai:munin.uit.no:10037/6735 2023-05-15T15:39:13+02:00 The invasive red king crab (Paralithodes camtschaticus): Mortality, individual growth and dispersal in Norwegian waters Windsland, Kristin 2014-10-01 https://hdl.handle.net/10037/6735 eng eng UiT The Arctic University of Norway UiT Norges arktiske universitet 978-82-8266-087-7 https://hdl.handle.net/10037/6735 URN:NBN:no-uit_munin_6335 openAccess Copyright 2014 The Author(s) VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 DOKTOR-002 Doctoral thesis Doktorgradsavhandling 2014 ftunivtroemsoe 2021-06-25T17:54:01Z The papers of this thesis are not available in Munin: 1. Windsland, K., Hvingel, C., Nilssen, E. M., Sundet, J. H.: 'Evaluation of von Bertalanffy growth curves for the introduced red king crab (Paralithodes camtschaticus) in Norwegian waters', Fisheries Research (2013), vol. 145:15-21. Available at http://dx.doi.org/10.1016/j.fishres.2013.03.003 2. Windsland, K., Hvingel, C., Nilssen, E. M., Sundet, J. H.: 'Dispersal of the introduced red king crab (Paralithodes camtschaticus) in Norwegian waters: a tag-recapture study', ICES Journal of Marine Science (2014), online before print. Available at http://dx.doi.org/10.1093/icesjms/fst241 3. Windsland, K.: 'Total and natural mortality of red king crab (Paralithodes camtschaticus) in Norwegian waters: Catch curve analysis and indirect estimation methods' (manuscript). To improve local economy, the red king crab (Paralithodes camtschaticus) was introduced to the Barents Sea by Soviet scientists in the 1960s. Adapting well to the new environment, the growing population gradually invaded new areas along the coast of northern Norway. The red king crab has become a valuable marine resource but as an introduced species, it is also a potential threat to the ecosystem. To meet the management goals, more knowledge about the growth, mortality and dispersal of the species is essential. This thesis attempts to provide this knowledge. In paper I, we developed Bayesian hierarchical models to estimate growth parameters of the von Bertalanffy growth function using tag-recapture data. Allowing for individual variability led to increased precision in estimated lengths and to more realistic values for the growth parameters. The length-at-relative age of small males were overestimated, while those of small females were not. This is believed to be due to differences in growth patterns after maturity. In paper II, we explored the dispersal behaviour and extent of dispersal of red king crab in Norwegian waters. The results indicated that the range expansion of this species is a result of both the existence of long-distance dispersers and time-dependent slow migration by short distance-dispersers and that there is a substantial dispersal of crabs out of the quota-regulated area. In paper III, estimates of annual total mortality were calculated using length-converted catch curves in three time-periods that represented different levels of exploitation. Natural mortality was estimated using a linear regression of total mortality and exploitation rate and by using indirect methods based on life-history parameters. The steady increase in total mortality of males is consistent with the increase in exploitation level while the increase in female mortality is surprising. The estimates of natural mortality ranged from 0.23-0.44 year-1; the larger values are probably an overestimate due to unaccounted bycatch mortality while the lower ones are consistent with life-expectancy. Doctoral or Postdoctoral Thesis Barents Sea Northern Norway Paralithodes camtschaticus Red king crab University of Tromsø: Munin Open Research Archive Barents Sea Norway Sundet ENVELOPE(12.933,12.933,66.000,66.000) |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 DOKTOR-002 |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 DOKTOR-002 Windsland, Kristin The invasive red king crab (Paralithodes camtschaticus): Mortality, individual growth and dispersal in Norwegian waters |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 DOKTOR-002 |
description |
The papers of this thesis are not available in Munin: 1. Windsland, K., Hvingel, C., Nilssen, E. M., Sundet, J. H.: 'Evaluation of von Bertalanffy growth curves for the introduced red king crab (Paralithodes camtschaticus) in Norwegian waters', Fisheries Research (2013), vol. 145:15-21. Available at http://dx.doi.org/10.1016/j.fishres.2013.03.003 2. Windsland, K., Hvingel, C., Nilssen, E. M., Sundet, J. H.: 'Dispersal of the introduced red king crab (Paralithodes camtschaticus) in Norwegian waters: a tag-recapture study', ICES Journal of Marine Science (2014), online before print. Available at http://dx.doi.org/10.1093/icesjms/fst241 3. Windsland, K.: 'Total and natural mortality of red king crab (Paralithodes camtschaticus) in Norwegian waters: Catch curve analysis and indirect estimation methods' (manuscript). To improve local economy, the red king crab (Paralithodes camtschaticus) was introduced to the Barents Sea by Soviet scientists in the 1960s. Adapting well to the new environment, the growing population gradually invaded new areas along the coast of northern Norway. The red king crab has become a valuable marine resource but as an introduced species, it is also a potential threat to the ecosystem. To meet the management goals, more knowledge about the growth, mortality and dispersal of the species is essential. This thesis attempts to provide this knowledge. In paper I, we developed Bayesian hierarchical models to estimate growth parameters of the von Bertalanffy growth function using tag-recapture data. Allowing for individual variability led to increased precision in estimated lengths and to more realistic values for the growth parameters. The length-at-relative age of small males were overestimated, while those of small females were not. This is believed to be due to differences in growth patterns after maturity. In paper II, we explored the dispersal behaviour and extent of dispersal of red king crab in Norwegian waters. The results indicated that the range expansion of this species is a result of both the existence of long-distance dispersers and time-dependent slow migration by short distance-dispersers and that there is a substantial dispersal of crabs out of the quota-regulated area. In paper III, estimates of annual total mortality were calculated using length-converted catch curves in three time-periods that represented different levels of exploitation. Natural mortality was estimated using a linear regression of total mortality and exploitation rate and by using indirect methods based on life-history parameters. The steady increase in total mortality of males is consistent with the increase in exploitation level while the increase in female mortality is surprising. The estimates of natural mortality ranged from 0.23-0.44 year-1; the larger values are probably an overestimate due to unaccounted bycatch mortality while the lower ones are consistent with life-expectancy. |
format |
Doctoral or Postdoctoral Thesis |
author |
Windsland, Kristin |
author_facet |
Windsland, Kristin |
author_sort |
Windsland, Kristin |
title |
The invasive red king crab (Paralithodes camtschaticus): Mortality, individual growth and dispersal in Norwegian waters |
title_short |
The invasive red king crab (Paralithodes camtschaticus): Mortality, individual growth and dispersal in Norwegian waters |
title_full |
The invasive red king crab (Paralithodes camtschaticus): Mortality, individual growth and dispersal in Norwegian waters |
title_fullStr |
The invasive red king crab (Paralithodes camtschaticus): Mortality, individual growth and dispersal in Norwegian waters |
title_full_unstemmed |
The invasive red king crab (Paralithodes camtschaticus): Mortality, individual growth and dispersal in Norwegian waters |
title_sort |
invasive red king crab (paralithodes camtschaticus): mortality, individual growth and dispersal in norwegian waters |
publisher |
UiT The Arctic University of Norway |
publishDate |
2014 |
url |
https://hdl.handle.net/10037/6735 |
long_lat |
ENVELOPE(12.933,12.933,66.000,66.000) |
geographic |
Barents Sea Norway Sundet |
geographic_facet |
Barents Sea Norway Sundet |
genre |
Barents Sea Northern Norway Paralithodes camtschaticus Red king crab |
genre_facet |
Barents Sea Northern Norway Paralithodes camtschaticus Red king crab |
op_relation |
978-82-8266-087-7 https://hdl.handle.net/10037/6735 URN:NBN:no-uit_munin_6335 |
op_rights |
openAccess Copyright 2014 The Author(s) |
_version_ |
1766370714487619584 |