Influence of krill ( Euphausia superba ) availability on humpback whale ( Megaptera novaeangliae ) reproductive rate

2021 ◽  
Author(s):  
Elisa Seyboth ◽  
Fernando Félix ◽  
Mary‐Anne Lea ◽  
Luciano Dalla Rosa ◽  
George M. Watters ◽  
...  
Keyword(s):  
Euphausia Superba ◽  
Humpback Whale ◽  
Reproductive Rate ◽  
Megaptera Novaeangliae

Reproduction and recruitment of individually identified humpback whales, Megaptera novaeangliae, observed in Massachusetts Bay, 1979–1985

1987 ◽  
Vol 65 (12) ◽  
pp. 2853-2863 ◽  
Author(s):  
Phillip J. Clapham ◽  
Charles A. Mayo
Keyword(s):  
Birth Rate ◽  
Crude Birth Rate ◽  
Humpback Whale ◽  
Mature Female ◽  
Reproductive Rate ◽  
Megaptera Novaeangliae ◽  
Humpback Whales ◽  
Massachusetts Bay ◽  
High Return ◽  
Calving Intervals

Humpback whale mother–calf pairs from a currently unexploited population were observed in Massachusetts Bay between 1979 and 1985. During this period, 44 individually identified mature females were observed, with a total of 72 calves. Of the 20 mothers observed with more than one calf during the study period, 12 had two calves and 8 had three calves. The observed calving intervals were 1 year (n = 1), 2 years (n = 16), 3 years (n = 10), and 4 years (n = 1). The crude birth rate varied from a low of 0.045 in 1981 to a high of 0.103 in 1983 (mean = 0.075). An alternative calculation of reproductive rate yielded a range of 0.30–0.43 calves per mature female per year. Mature females were observed significantly more frequently in years when they had a calf than in years when they did not. Females with calves associate with other whales less frequently than females without calves. Observations of calves feeding suggest that weaning may begin when calves are 5–6 months of age. Forty-five of the 49 calves born before 1985 separated from their mothers during the calf's second winter, while 37 of the 49 were observed to return to the study area in 1 or more years after separation from their mothers. One calf is known to have died. Two females born during the study period returned with calves of their own in later years. The high return rate of calves in years after separation strongly suggests that the composition of a humpback whale feeding stock is determined matrilineally.

Characterizing Patterns within Humpback Whale (Megaptera novaeangliae) Songs

2007 ◽  
Vol 33 (2) ◽  
pp. 202-213 ◽  
Author(s):  
Sean R. Green ◽  
Eduardo Mercado ◽  
Adam A. Pack ◽  
Louis M. Herman
Keyword(s):  
Humpback Whale ◽  
Megaptera Novaeangliae

Experimental evidences for chaotic dynamics in the vocalizations of the humpback whale megaptera novaeangliae

2006 ◽  
Vol 1 (2) ◽  
pp. 180-188
Author(s):  
A. Facchini ◽  
F. Delogu ◽  
L. Lambroni ◽  
F.M. Pulselli ◽  
E.B.P. Tiezzi
Keyword(s):  
Chaotic Dynamics ◽  
Humpback Whale ◽  
Megaptera Novaeangliae

First humpback whale (Megaptera novaeangliae) re-sighting between Azorean waters and the Barents Sea (Murman coast, northwestern Russia)

Polar Biology ◽  
2022 ◽  
Author(s):  
Rui Peres dos Santos ◽  
Rafael Martins ◽  
Anton Chaiko ◽  
Ted Cheeseman ◽  
Lindsey S. Jones ◽  
...  
Keyword(s):  
Barents Sea ◽  
Humpback Whale ◽  
Megaptera Novaeangliae ◽  
The Barents Sea ◽  
Northwestern Russia

Case Studies on Longitudinal Mercury Content in Humpback Whale ( Megaptera Novaeangliae) Baleen

2021 ◽  
Author(s):  
Carley Lowe ◽  
Renee Jordan Ward ◽  
Kathleen E. Hunt ◽  
Matthew C. Rogers ◽  
Alexander J. Werth ◽  
...  
Keyword(s):  
Case Studies ◽  
Humpback Whale ◽  
Mercury Content ◽  
Megaptera Novaeangliae

Mitochondrial DNA diversity of the Southwestern Atlantic humpback whale (Megaptera novaeangliae) breeding area off Brazil, and the potential connections to Antarctic feeding areas

2007 ◽  
Vol 9 (5) ◽  
pp. 1253-1262 ◽  
Author(s):  
Márcia H. Engel ◽  
Nelson J. R. Fagundes ◽  
Howard C. Rosenbaum ◽  
Matthew S. Leslie ◽  
Paulo H. Ott ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
Humpback Whale ◽  
Megaptera Novaeangliae ◽  
Southwestern Atlantic ◽  
Breeding Area ◽  
Dna Diversity
Sign in / Sign up

Export Citation Format

Share Document