Erratum: The impact of entanglements on two substocks of the western North Atlantic humpback whale, Megaptera novaeangliae

1996 ◽  
Vol 74 (4) ◽  
pp. 766-767
Author(s):  
Lisa Volgenau ◽  
Scott D. Kraus ◽  
Jon Lien
Keyword(s):  
North Atlantic ◽  
Humpback Whale ◽  
Megaptera Novaeangliae ◽  
The Impact

The impact of entanglements on two substocks of the western North Atlantic humpback whale, Megaptera novaeangliae

1995 ◽  
Vol 73 (9) ◽  
pp. 1689-1698 ◽  
Author(s):  
Lisa Volgenau ◽  
Scott D. Kraus ◽  
Jon Lien
Keyword(s):  
North Atlantic ◽  
Newfoundland And Labrador ◽  
Birth Rate ◽  
Gulf Of Maine ◽  
Humpback Whale ◽  
Megaptera Novaeangliae ◽  
Fishing Gear ◽  
The Impact ◽  
Annual Mortality ◽  
Mortality Estimates

Increased use of fishing gear in the marine environment can be detrimental to animals such as cetaceans, particularly through entanglement. Examination of the impact of such mortality on two substocks of the western North Atlantic humpback whale, Megaptera novaeangliae, indicates that when entanglement losses are added to natural mortality estimates and subtracted from birth rate estimates, annual mortality may be as high as 5.4% in the Newfoundland and Labrador population and 4.8% in the Gulf of Maine population. More effective entanglement reporting and assisting systems are needed in the Gulf of Maine and increased efforts are needed to decrease entanglements, entanglement mortalities, and damages to fishing gear. We conclude that monitoring of the size of humpback populations needs to continue, given their particular vulnerability to coastal fishing and the potential impacts of entanglement mortality.

Population Estimate of the Humpback Whale (Megaptera novaeangliae) in the West Indies by Visual and Acoustic Techniques

1975 ◽  
Vol 32 (4) ◽  
pp. 499-506 ◽  
Author(s):  
H. E. Winn ◽  
R. K. Edel ◽  
A. G. Taruski
Keyword(s):  
North Atlantic ◽  
West Indies ◽  
Total Population ◽  
Humpback Whale ◽  
Megaptera Novaeangliae ◽  
New Method ◽  
Population Estimate ◽  
The West ◽  
Acoustic Techniques

Visual track census and a new method, acoustic counting, were used to estimate the humpback whale (Megaptera novaeangliae) population in the West Indies. Results produced by the two methods differed to some extent. The average or best estimate was 1018 whales with a range of 785–1157. Silver and Navidad banks, containing approximately 85% of the total population, are presently the major nursery grounds in the West Indies. The humpback whale population in the western North Atlantic has increased since the early part of the century.

North Atlantic humpback whale (Megaptera novaeangliae) hotspots defined by bathymetric features off western Puerto Rico

2016 ◽  
Vol 94 (7) ◽  
pp. 517-527 ◽  
Author(s):  
M.M. MacKay ◽  
B. Würsig ◽  
C.E. Bacon ◽  
J.D. Selwyn
Keyword(s):  
Puerto Rico ◽  
North Atlantic ◽  
Humpback Whale ◽  
Current Data ◽  
Megaptera Novaeangliae ◽  
Humpback Whales ◽  
Shelf Edge ◽  
Species List ◽  
Occurrence Patterns ◽  
Potential Interactions

North Atlantic humpback whales (Megaptera novaeangliae (Borowski, 1781)) are increasing in number, necessitating current data from winter areas for assessing potential interactions with humans. Occurrence patterns of humpback whales wintering off Puerto Rico were investigated to predict where whales aggregate in nearshore areas. Here we describe the relationship between group associations of humpback whales and bathymetric features off western Puerto Rico. Data were collected from 2011 to 2014. Effort consisted of 240.9 vessel h, 13.0 aerial h, and 303.6 h of land observations conducted over 165 days. A total of 197 humpback whale groups were observed with n = 331 individuals: 91 (46.2%) singletons, 67 (34%) dyads, 17 (8.6%) mother–calf pairs, 8 (4.1%) competitive groups, 8 (4.1%) mother–calf–escort groups, and 6 (3.1%) mixed-species associations. A linear regression model supported that group composition correlated with hotspots associated with four bathymetric features. Dyads and competitive groups were dispersed among features in deeper water. Singletons were observed farther from a shelf edge, whereas singing males were closely associated with a shelf edge. Mother–calf pairs occurred nearshore in shallow water; however, when mother–calf pairs were sighted with an escort, they were offshore. This study is especially important ahead of possible removal from the Endangered Species list.

scholarly journals AN OCEAN-BASIN-WIDE MARK-RECAPTURE STUDY OF THE NORTH ATLANTIC HUMPBACK WHALE (MEGAPTERA NOVAEANGLIAE)

1999 ◽  
Vol 15 (1) ◽  
pp. 1-32 ◽  
Author(s):  
T. D. Smith ◽  
J. Allen ◽  
P. J. Clapham ◽  
P. S. Hammond ◽  
S. Katona ◽  
...  
Keyword(s):  
North Atlantic ◽  
Humpback Whale ◽  
Ocean Basin ◽  
Megaptera Novaeangliae ◽  
Mark Recapture ◽  
The North ◽  
The North Atlantic

Cetaceans, sex and sea serpents: an analysis of the Egede accounts of a “most dreadful monster” seen off the coast of Greenland in 1734

2005 ◽  
Vol 32 (1) ◽  
pp. 1-9 ◽  
Author(s):  
C. G. M. Paxton ◽  
E. Knatterud ◽  
S. L. Hedley
Keyword(s):  
North Atlantic ◽  
Humpback Whale ◽  
Megaptera Novaeangliae ◽  
Eubalaena Glacialis ◽  
Eschrichtius Robustus ◽  
North Atlantic Right Whale ◽  
Right Whale

A re-evaluation of the “most dreadful monster” originally described by the “Apostle of Greenland” Hans Egede in 1741 suggests that the missionary's son Poul probably saw an unfamiliar cetacean. The species seen was likely to have been a humpback whale (Megaptera novaeangliae), a North Atlantic right whale (Eubalaena glacialis) or one of the last remaining Atlantic grey whales (Eschrichtius robustus) either without flukes or possibly a male in a state of arousal.

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