A bioenergetics based comparison of growth conversion efficiency of Atlantic cod on Georges Bank and in the Gulf of Maine
m590 Several authors state that foraging conditions and food web dynamics may be contributing to declines in Atlantic cod stocks. Therefore, it is essential to take a food web perspective to under-stand the complicated array of potential interactions affecting marine communities. The widely used Wis...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.585.8749 2023-05-15T15:26:47+02:00 A bioenergetics based comparison of growth conversion efficiency of Atlantic cod on Georges Bank and in the Gulf of Maine Ivan Mateo The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.585.8749 http://journal.nafo.int/38/mateo/3-mateo.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.585.8749 http://journal.nafo.int/38/mateo/3-mateo.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://journal.nafo.int/38/mateo/3-mateo.pdf Key words bioenergetics cod Georges Bank growth efficiency Gulf of Maine text ftciteseerx 2016-01-08T13:15:44Z m590 Several authors state that foraging conditions and food web dynamics may be contributing to declines in Atlantic cod stocks. Therefore, it is essential to take a food web perspective to under-stand the complicated array of potential interactions affecting marine communities. The widely used Wisconsin Bioenergetics Model uses an energy-balance approach calculated on a daily time step and can be used to evaluate the effect of changes in prey resources on growth or food consumption. Bioenergetics models have been made for many important fishes within the Great Lakes. However, few have been developed for US Northeastern Continental Shelf fish species. Growth performance of Georges Bank and Gulf of Maine Atlantic cod during 2004 was examined using a bioenergetics model and available data on gut contents and growth of different ages. Growth efficiency, calculated from daily growth and consumption rates, was used as a measure of growth performance. Overall growth performance for Atlantic cod was significantly lower at Georges Bank than in Gulf of Maine. Monthly individual consumption demand and specific growth rates for Atlantic cod calculated from the bioenergetic model were significantly higher on Georges Bank than in the Gulf of Maine. Increas-ing water temperatures approached the upper limits of thermal tolerances for cod in Georges Bank, possibly leading to decreasing growth efficiencies. Growth efficiency of cod in the Gulf of Maine was less variable than on Georges Bank due to the more homogenous temperatures and energetic content of diets found in the former location. Text atlantic cod Unknown |
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Key words bioenergetics cod Georges Bank growth efficiency Gulf of Maine |
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Key words bioenergetics cod Georges Bank growth efficiency Gulf of Maine Ivan Mateo A bioenergetics based comparison of growth conversion efficiency of Atlantic cod on Georges Bank and in the Gulf of Maine |
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Key words bioenergetics cod Georges Bank growth efficiency Gulf of Maine |
description |
m590 Several authors state that foraging conditions and food web dynamics may be contributing to declines in Atlantic cod stocks. Therefore, it is essential to take a food web perspective to under-stand the complicated array of potential interactions affecting marine communities. The widely used Wisconsin Bioenergetics Model uses an energy-balance approach calculated on a daily time step and can be used to evaluate the effect of changes in prey resources on growth or food consumption. Bioenergetics models have been made for many important fishes within the Great Lakes. However, few have been developed for US Northeastern Continental Shelf fish species. Growth performance of Georges Bank and Gulf of Maine Atlantic cod during 2004 was examined using a bioenergetics model and available data on gut contents and growth of different ages. Growth efficiency, calculated from daily growth and consumption rates, was used as a measure of growth performance. Overall growth performance for Atlantic cod was significantly lower at Georges Bank than in Gulf of Maine. Monthly individual consumption demand and specific growth rates for Atlantic cod calculated from the bioenergetic model were significantly higher on Georges Bank than in the Gulf of Maine. Increas-ing water temperatures approached the upper limits of thermal tolerances for cod in Georges Bank, possibly leading to decreasing growth efficiencies. Growth efficiency of cod in the Gulf of Maine was less variable than on Georges Bank due to the more homogenous temperatures and energetic content of diets found in the former location. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Ivan Mateo |
author_facet |
Ivan Mateo |
author_sort |
Ivan Mateo |
title |
A bioenergetics based comparison of growth conversion efficiency of Atlantic cod on Georges Bank and in the Gulf of Maine |
title_short |
A bioenergetics based comparison of growth conversion efficiency of Atlantic cod on Georges Bank and in the Gulf of Maine |
title_full |
A bioenergetics based comparison of growth conversion efficiency of Atlantic cod on Georges Bank and in the Gulf of Maine |
title_fullStr |
A bioenergetics based comparison of growth conversion efficiency of Atlantic cod on Georges Bank and in the Gulf of Maine |
title_full_unstemmed |
A bioenergetics based comparison of growth conversion efficiency of Atlantic cod on Georges Bank and in the Gulf of Maine |
title_sort |
bioenergetics based comparison of growth conversion efficiency of atlantic cod on georges bank and in the gulf of maine |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.585.8749 http://journal.nafo.int/38/mateo/3-mateo.pdf |
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atlantic cod |
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atlantic cod |
op_source |
http://journal.nafo.int/38/mateo/3-mateo.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.585.8749 http://journal.nafo.int/38/mateo/3-mateo.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766357264420044800 |