scholarly journals Variation in North Atlantic right whale Eubalaena glacialis occurrence in the Bay of Fundy, Canada, over three decades

2019 ◽  
Vol 39 ◽  
pp. 159-171 ◽  
Author(s):  
KTA Davies ◽  
MW Brown ◽  
PK Hamilton ◽  
AR Knowlton ◽  
CT Taggart ◽  
...  
Keyword(s):  
North Atlantic ◽  
Eubalaena Glacialis ◽  
Bay Of Fundy ◽  
North Atlantic Right Whale ◽  
Right Whale

Fishing-gear threat to right whales (Eubalaena glacialis) in Canadian waters and the risk of lethal entanglement

2011 ◽  
Vol 68 (12) ◽  
pp. 2174-2193 ◽  
Author(s):  
Angelia S.M. Vanderlaan ◽  
R. Kent Smedbol ◽  
Christopher T. Taggart
Keyword(s):  
Relative Risk ◽  
North Atlantic ◽  
Eubalaena Glacialis ◽  
Bay Of Fundy ◽  
Commercial Fishing ◽  
Fishing Gear ◽  
Critical Habitat ◽  
North Atlantic Right Whale ◽  
Right Whale ◽  
Right Whales

Commercial fishing gear can potentially entangle any whale, and this is especially true for the endangered North Atlantic right whale ( Eubalaena glacialis ), for which entanglement is second only to vessel strike as being responsible for documented right whale deaths. We use right whale survey data and Canadian fishing-gear deployment data to estimate the relative threat of gear entanglement in a Scotia–Fundy study area and the relative risk of lethal entanglement in the Bay of Fundy and on Roseway Basin, Scotian Shelf, where Critical Habitat has been legislated. We focus on groundfish and pelagic hook-and-line; groundfish gillnet; and crab-, hagfish-, and inshore and offshore lobster-trap gear. Our analyses demonstrate that groundfish hook-and-line gear poses the greatest threat to right whales among the seven gear types analysed during the summer-resident period in Critical Habitat and that gear from the lobster fisheries poses the greatest threat during the spring and autumn periods when whales are migrating to and from Critical Habitat. We suggest that area-specific seasonal closures of some fisheries would reduce threat and risk to whales without unduly compromising fishing interests.

scholarly journals North Atlantic right whale (Eubalaena glacialis) and its food: (I) a spatial climatology of Calanus biomass and potential foraging habitats in Canadian waters

2019 ◽  
Vol 41 (5) ◽  
pp. 667-685 ◽  
Author(s):  
S Plourde ◽  
C Lehoux ◽  
C L Johnson ◽  
G Perrin ◽  
V Lesage
Keyword(s):  
Climate Change ◽  
Water Column ◽  
North Atlantic ◽  
Eubalaena Glacialis ◽  
Bay Of Fundy ◽  
North Atlantic Right Whale ◽  
Main Prey ◽  
Right Whale ◽  
The North ◽  
The North Atlantic

Abstract This study aimed at identifying potentially suitable foraging habitats for the North Atlantic right whale (NARW; Eubalaena glacialis) in the Gulf of St Lawrence (GSL), on the Scotian Shelf (SS) and in the Bay of Fundy (BoF), Canada, based on the distribution densities of their main prey, Calanus copepod species. More than 4800 historical Calanus spp. water column integrated samples as well as 221 vertically stratified sampling stations were used to create a 3D (latitude, longitude and vertical) climatology of Calanus spp. biomass densities for spring and summer–fall when NARW are feeding in Canadian waters. We then combined this 3D preyscape with bio-energetic considerations to highlight potentially suitable NARW foraging habitats in the region. Our 3D climatological approach successfully identified the known feeding areas of Grand Manan (BoF) and Roseway Basin (western SS), confirming its validity. Expanding our analyses to the GSL and other parts of the SS, we identified in both regions areas previously unknown where Calanus spp. biomass densities exceeded minimum levels suitable for foraging NARW. Our results represent a key contribution to the identification of important foraging areas for NARW in Canadian waters, especially in the context of climate change and the documented shift in NARW distribution.

Assessment of mitochondrial DNA structuring and nursery use in the North Atlantic right whale (Eubalaena glacialis)

1999 ◽  
Vol 77 (8) ◽  
pp. 1217-1222 ◽  
Author(s):  
S Malik ◽  
M W Brown ◽  
S D Kraus ◽  
A R Knowlton ◽  
P K Hamilton ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
North Atlantic ◽  
Nursery Area ◽  
Eubalaena Glacialis ◽  
Bay Of Fundy ◽  
Genetic Structuring ◽  
North Atlantic Right Whale ◽  
Right Whale ◽  
The North ◽  
The North Atlantic

The North Atlantic right whale (Eubalaena glacialis) inhabits five areas along the east coast of North America at different times of the year. During 17 years of field observations, it has been found that only 59% of the newborn calves are brought to the Bay of Fundy nursery area. To examine whether this is because of population structuring, the mitochondrial DNA (mtDNA) control region haplotypes were determined for 269 individuals. Seven polymorphic sites were found to define five haplotypes. Calves were divided into two groups based on whether or not they were brought to the Bay of Fundy nursery. Significant genetic structuring of mitochondrial haplotypes was found between these groups (p = 0.002). Mothers that have had more than three calves demonstrated significant fidelity (p = 0.005) to the Bay of Fundy, suggesting that philopatry is the basis for the genetic structuring. Although this study clearly identifies the existence of two subpopulations and an alternative nursery area(s), the location(s) of the alternative area(s) is unclear and remains an important issue for the conservation of the species.

Analysis of fecal glucocorticoids in the North Atlantic right whale (Eubalaena glacialis)

2006 ◽  
Vol 148 (2) ◽  
pp. 260-272 ◽  
Author(s):  
Kathleen E. Hunt ◽  
Rosalind M. Rolland ◽  
Scott D. Kraus ◽  
Samuel K. Wasser
Keyword(s):  
North Atlantic ◽  
Eubalaena Glacialis ◽  
North Atlantic Right Whale ◽  
Right Whale ◽  
The North ◽  
The North Atlantic ◽  
Fecal Glucocorticoids

Observations of a western North Atlantic right whale (Eubalaena glacialis) birth offshore of the protected southeast U.S. critical habitat

2011 ◽  
Vol 27 (3) ◽  
pp. E234-E240 ◽  
Author(s):  
H. J. Foley ◽  
R. C. Holt ◽  
R. E. Hardee ◽  
P. B. Nilsson ◽  
K. A. Jackson ◽  
...  
Keyword(s):  
North Atlantic ◽  
Eubalaena Glacialis ◽  
Critical Habitat ◽  
North Atlantic Right Whale ◽  
Right Whale

SEASONAL OCCURRENCE OF NORTH ATLANTIC RIGHT WHALE (EUBALAENA GLACIALIS) VOCALIZATIONS AT TWO SITES ON THE SCOTIAN SHELF

2007 ◽  
Vol 23 (4) ◽  
pp. 856-867 ◽  
Author(s):  
David K. Mellinger ◽  
Sharon L. Nieukirk ◽  
Haru Matsumoto ◽  
Sara L. Heimlich ◽  
Robert P. Dziak ◽  
...  
Keyword(s):  
North Atlantic ◽  
Seasonal Occurrence ◽  
Eubalaena Glacialis ◽  
Scotian Shelf ◽  
North Atlantic Right Whale ◽  
Right Whale
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