Energetically defining the thermal limits of the snow crab
The snow crab, Chionoecetes opilio, is a cold-water species found naturally at temperatures below 5°C. Its physiology and energetics were examined to understand the metabolic limitations that restrict the snow crab to these temperatures. The species is not confined to cold water because of a limited...
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1989
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.536.1163 http://jeb.biologists.org/content/145/1/371.full.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.536.1163 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.536.1163 2023-05-15T15:54:09+02:00 Energetically defining the thermal limits of the snow crab P. Foyle Ronald K. O'dor Robert W. Elner The Pennsylvania State University CiteSeerX Archives 1989 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.536.1163 http://jeb.biologists.org/content/145/1/371.full.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.536.1163 http://jeb.biologists.org/content/145/1/371.full.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://jeb.biologists.org/content/145/1/371.full.pdf Key words energetics respiration physiology snow crab Chionoecetes Crustacea Decapoda text 1989 ftciteseerx 2020-02-23T01:14:28Z The snow crab, Chionoecetes opilio, is a cold-water species found naturally at temperatures below 5°C. Its physiology and energetics were examined to understand the metabolic limitations that restrict the snow crab to these temperatures. The species is not confined to cold water because of a limited respiratory system. Routine oxygen demand can be met even at lethal tempera-tures of 18°C (56mgO2kg~1h"1, with a Qi0 of 2-2). Blood lactate levels remain below l'Smmoll"1 and actually decline slightly with temperature. Energy budgets, which were constructed from an examination of oxygen uptake, activity and food consumption in morphometrically mature male animals between 0 and 18 °C, indicate that the snow crab is energetically restricted to cold water. Rising metabolic costs overtake caloric intake around 7°C. This is probably due to digestive metabolism which is temperature-sensitive. Food consumption increases up to 6°C but then falls. Crabs stop feeding above 12°C. Although the growth equation is positive between 1 and 7°C, it becomes slightly negative below 1°C. This observation is unexpected since snow crabs are commonly found between 0 and 1 °C. Slight temperature changes in the natural environment may, therefore, regulate growth and reproduction in this species. Text Chionoecetes opilio Snow crab Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Key words energetics respiration physiology snow crab Chionoecetes Crustacea Decapoda |
spellingShingle |
Key words energetics respiration physiology snow crab Chionoecetes Crustacea Decapoda P. Foyle Ronald K. O'dor Robert W. Elner Energetically defining the thermal limits of the snow crab |
topic_facet |
Key words energetics respiration physiology snow crab Chionoecetes Crustacea Decapoda |
description |
The snow crab, Chionoecetes opilio, is a cold-water species found naturally at temperatures below 5°C. Its physiology and energetics were examined to understand the metabolic limitations that restrict the snow crab to these temperatures. The species is not confined to cold water because of a limited respiratory system. Routine oxygen demand can be met even at lethal tempera-tures of 18°C (56mgO2kg~1h"1, with a Qi0 of 2-2). Blood lactate levels remain below l'Smmoll"1 and actually decline slightly with temperature. Energy budgets, which were constructed from an examination of oxygen uptake, activity and food consumption in morphometrically mature male animals between 0 and 18 °C, indicate that the snow crab is energetically restricted to cold water. Rising metabolic costs overtake caloric intake around 7°C. This is probably due to digestive metabolism which is temperature-sensitive. Food consumption increases up to 6°C but then falls. Crabs stop feeding above 12°C. Although the growth equation is positive between 1 and 7°C, it becomes slightly negative below 1°C. This observation is unexpected since snow crabs are commonly found between 0 and 1 °C. Slight temperature changes in the natural environment may, therefore, regulate growth and reproduction in this species. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
P. Foyle Ronald K. O'dor Robert W. Elner |
author_facet |
P. Foyle Ronald K. O'dor Robert W. Elner |
author_sort |
P. Foyle |
title |
Energetically defining the thermal limits of the snow crab |
title_short |
Energetically defining the thermal limits of the snow crab |
title_full |
Energetically defining the thermal limits of the snow crab |
title_fullStr |
Energetically defining the thermal limits of the snow crab |
title_full_unstemmed |
Energetically defining the thermal limits of the snow crab |
title_sort |
energetically defining the thermal limits of the snow crab |
publishDate |
1989 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.536.1163 http://jeb.biologists.org/content/145/1/371.full.pdf |
genre |
Chionoecetes opilio Snow crab |
genre_facet |
Chionoecetes opilio Snow crab |
op_source |
http://jeb.biologists.org/content/145/1/371.full.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.536.1163 http://jeb.biologists.org/content/145/1/371.full.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766389326689599488 |