Lipid and gross energy content of North Atlantic right whale food, Calanus finmarchicus, in the Bay of Fundy
We address spatial and temporal distribution of abundance, lipid and caloric content and water column energy density of the copepod Calanus finmarchicus, a major food source for the north Atlantic right whale (NARW) Eubalaena glacialis in a primary feeding habitat - Grand Manan Basin, Bay of Fundy....
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2013
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Online Access: | https://doi.org/10.3354/esr003077 http://hdl.handle.net/10222/27360 |
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ftdalhouse:oai:DalSpace.library.dal.ca:10222/27360 2023-05-15T15:47:55+02:00 Lipid and gross energy content of North Atlantic right whale food, Calanus finmarchicus, in the Bay of Fundy Michaud, Josee Taggart, Christopher T. 2013-06-19T18:04:59Z https://doi.org/10.3354/esr003077 http://hdl.handle.net/10222/27360 unknown Endangered Species Research Michaud, Josee, and Christopher T. Taggart. 2007. "Lipid and gross energy content of North Atlantic right whale food, Calanus finmarchicus, in the Bay of Fundy." Endangered Species Research 3(1): 77-94. 1613-4796 http://dx.doi.org/10.3354/esr003077 http://hdl.handle.net/10222/27360 3 1 77 article 2013 ftdalhouse https://doi.org/10.3354/esr003077 2021-12-29T18:08:42Z We address spatial and temporal distribution of abundance, lipid and caloric content and water column energy density of the copepod Calanus finmarchicus, a major food source for the north Atlantic right whale (NARW) Eubalaena glacialis in a primary feeding habitat - Grand Manan Basin, Bay of Fundy. The focus is on the lipid-rich diapausing copepodite stage 5 (C5) that dominates the zooplankton community during the summer and autumn whale-feeding period. We show that from May through July 2002, monthly averages of depth-integrated zooplankton wet biomass ( 0.88, p < 0.05) to the abundance and quality (i.e. energy density) of food available in the habitat. Thus, a water column-integrated energy density of 3 kJ m(-3) appears to be a reasonable minimum estimate of that needed to define a right whale feeding habitat, though subject to spatial and temporal variation. Accordingly, inter-annual variation in the abundance and energy content of C5s will influence right whale feeding success and may influence arrival at and departure to and from, as well as seasonal residency in, primary feeding habitats. We suggest that prey field examinations and estimates of the type presented here should advance insights concerning the nature and location of other potential habitats as well as variation in right whale condition and reproductive capacity. Article in Journal/Newspaper Calanus finmarchicus Eubalaena glacialis North Atlantic North Atlantic right whale Dalhousie University: DalSpace Institutional Repository Manan ENVELOPE(8.748,8.748,62.793,62.793) Endangered Species Research 3 77 94 |
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Open Polar |
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Dalhousie University: DalSpace Institutional Repository |
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ftdalhouse |
language |
unknown |
description |
We address spatial and temporal distribution of abundance, lipid and caloric content and water column energy density of the copepod Calanus finmarchicus, a major food source for the north Atlantic right whale (NARW) Eubalaena glacialis in a primary feeding habitat - Grand Manan Basin, Bay of Fundy. The focus is on the lipid-rich diapausing copepodite stage 5 (C5) that dominates the zooplankton community during the summer and autumn whale-feeding period. We show that from May through July 2002, monthly averages of depth-integrated zooplankton wet biomass ( 0.88, p < 0.05) to the abundance and quality (i.e. energy density) of food available in the habitat. Thus, a water column-integrated energy density of 3 kJ m(-3) appears to be a reasonable minimum estimate of that needed to define a right whale feeding habitat, though subject to spatial and temporal variation. Accordingly, inter-annual variation in the abundance and energy content of C5s will influence right whale feeding success and may influence arrival at and departure to and from, as well as seasonal residency in, primary feeding habitats. We suggest that prey field examinations and estimates of the type presented here should advance insights concerning the nature and location of other potential habitats as well as variation in right whale condition and reproductive capacity. |
format |
Article in Journal/Newspaper |
author |
Michaud, Josee Taggart, Christopher T. |
spellingShingle |
Michaud, Josee Taggart, Christopher T. Lipid and gross energy content of North Atlantic right whale food, Calanus finmarchicus, in the Bay of Fundy |
author_facet |
Michaud, Josee Taggart, Christopher T. |
author_sort |
Michaud, Josee |
title |
Lipid and gross energy content of North Atlantic right whale food, Calanus finmarchicus, in the Bay of Fundy |
title_short |
Lipid and gross energy content of North Atlantic right whale food, Calanus finmarchicus, in the Bay of Fundy |
title_full |
Lipid and gross energy content of North Atlantic right whale food, Calanus finmarchicus, in the Bay of Fundy |
title_fullStr |
Lipid and gross energy content of North Atlantic right whale food, Calanus finmarchicus, in the Bay of Fundy |
title_full_unstemmed |
Lipid and gross energy content of North Atlantic right whale food, Calanus finmarchicus, in the Bay of Fundy |
title_sort |
lipid and gross energy content of north atlantic right whale food, calanus finmarchicus, in the bay of fundy |
publishDate |
2013 |
url |
https://doi.org/10.3354/esr003077 http://hdl.handle.net/10222/27360 |
long_lat |
ENVELOPE(8.748,8.748,62.793,62.793) |
geographic |
Manan |
geographic_facet |
Manan |
genre |
Calanus finmarchicus Eubalaena glacialis North Atlantic North Atlantic right whale |
genre_facet |
Calanus finmarchicus Eubalaena glacialis North Atlantic North Atlantic right whale |
op_relation |
Endangered Species Research Michaud, Josee, and Christopher T. Taggart. 2007. "Lipid and gross energy content of North Atlantic right whale food, Calanus finmarchicus, in the Bay of Fundy." Endangered Species Research 3(1): 77-94. 1613-4796 http://dx.doi.org/10.3354/esr003077 http://hdl.handle.net/10222/27360 3 1 77 |
op_doi |
https://doi.org/10.3354/esr003077 |
container_title |
Endangered Species Research |
container_volume |
3 |
container_start_page |
77 |
op_container_end_page |
94 |
_version_ |
1766382891996020736 |