First evidence of interchange of humpback whales (Megaptera novaeangliae) between the Magellan Strait and Antarctic Peninsula feeding grounds

Acevedo, Jorge; Capella, Juan; Cheeseman, Ted; Monnahan, Cole C.; Southerland, Ken; Acuña, Paola; Aguayo‐Lobo, Anelio

doi:10.1007/s00300-021-02827-2

Cited by 6 publications

(4 citation statements)

References 26 publications

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“…The breeding area of humpback whales from the breeding stock ‘G’ (BSG) is situated in the tropical and subtropical waters along the Pacific coast of Central and South America from where they seasonally migrate to the Western Antarctic Peninsula (WAP) to feed 2 , 3 , 19 , 20 . Some individuals from this population do not reach the Antarctic and instead feed around the Fueguian Archipelago of Southern Chile 21 . On the Atlantic coast of South America, breeding stock ‘A’ (BSA) breeds off the coast of Brazil, from the north to the southeast, especially on the Abrolhos Bank 22 , 23 .…”

Section: Introductionmentioning

confidence: 96%

The Southern Ocean Exchange: porous boundaries between humpback whale breeding populations in southern polar waters

Marcondes

Cheeseman

Jackson

et al. 2021

Sci Rep

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Humpback whales (Megaptera novaeangliae) are a cosmopolitan species and perform long annual migrations between low-latitude breeding areas and high-latitude feeding areas. Their breeding populations appear to be spatially and genetically segregated due to long-term, maternally inherited fidelity to natal breeding areas. In the Southern Hemisphere, some humpback whale breeding populations mix in Southern Ocean waters in summer, but very little movement between Pacific and Atlantic waters has been identified to date, suggesting these waters constituted an oceanic boundary between genetically distinct populations. Here, we present new evidence of summer co-occurrence in the West Antarctic Peninsula feeding area of two recovering humpback whale breeding populations from the Atlantic (Brazil) and Pacific (Central and South America). As humpback whale populations recover, observations like this point to the need to revise our perceptions of boundaries between stocks, particularly on high latitude feeding grounds. We suggest that this “Southern Ocean Exchange” may become more frequent as populations recover from commercial whaling and climate change modifies environmental dynamics and humpback whale prey availability.

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Section: Introductionmentioning

confidence: 96%

The Southern Ocean Exchange: porous boundaries between humpback whale breeding populations in southern polar waters

Marcondes

Cheeseman

Jackson

et al. 2021

Sci Rep

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“…Although there are historical records of whales using the area for the last six centuries (Gibbons et al, 2003 and references therein), there is evidence of the increase in the use of the area over the last few decades. It is indicated that individuals utilising this area generally do not migrate to the Antarctic Peninsula (Acevedo et al, 2017), although a few photoidentification matches have been found between this area and the Antarctic Peninsula (Acevedo et al, 2021). A third feeding location has been identified in the Gulf of Corcovado, Chilean Patagonia (41-44°S) (Hucke-Gaete et al, 2006), where the number of individuals encountered each year has been increasing since 2000 (Hucke-Gaete et al, 2013).…”

Section: Breeding and Feeding Ground Distribution And Potential Chang...mentioning

confidence: 98%

Whales and climate

2024

Frontiers Research Topics

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Frontiers is more than just an open access publisher of scholarly articles: it is a pioneering approach to the world of academia, radically improving the way scholarly research is managed. The grand vision of Frontiers is a world where all people have an equal opportunity to seek, share and generate knowledge. Frontiers provides immediate and permanent online open access to all its publications, but this alone is not enough to realize our grand goals. Frontiers journal seriesThe Frontiers journal series is a multi-tier and interdisciplinary set of openaccess, online journals, promising a paradigm shift from the current review, selection and dissemination processes in academic publishing. All Frontiers journals are driven by researchers for researchers; therefore, they constitute a service to the scholarly community. At the same time, the Frontiers journal series operates on a revolutionary invention, the tiered publishing system, initially addressing specific communities of scholars, and gradually climbing up to broader public understanding, thus serving the interests of the lay society, too. Dedication to qualityEach Frontiers article is a landmark of the highest quality, thanks to genuinely collaborative interactions between authors and review editors, who include some of the world's best academicians. Research must be certified by peers before entering a stream of knowledge that may eventually reach the public -and shape society; therefore, Frontiers only applies the most rigorous and unbiased reviews. Frontiers revolutionizes research publishing by freely delivering the most outstanding research, evaluated with no bias from both the academic and social point of view. By applying the most advanced information technologies, Frontiers is catapulting scholarly publishing into a new generation. What are Frontiers Research Topics?Frontiers Research Topics are very popular trademarks of the Frontiers journals series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area.

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“…The development of global networks of research collaborations and citizen science data collection of humpback whale fluke photos, as well as advancements in automated imaging techniques 17 have led to the discovery of numerous instances of humpback whales documented migrating outside of their expected ranges. These records include the detection of whales thousands of kilometers from their expected migratory location [18][19][20] , and include transoceanic movements between multiple breeding grounds 19,21 and between breeding and feeding grounds [22][23][24][25][26] ; the use of multiple distinct breeding grounds in the same season 26,27 ; migrations to areas beyond the known range of their stock 28 ; and feeding in known breeding grounds 29 .…”

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confidence: 99%

Interchange of Southern Hemisphere humpback whales across the South Atlantic Ocean

Ramos¹,

Cheeseman

Marcondes

et al. 2023

Sci Rep

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The cosmopolitan distribution of humpback whales (Megaptera novaeangliae) is largely driven by migrations between winter low-latitude breeding grounds and summer high-latitude feeding grounds. Southern Hemisphere humpback whales faced intensive exploitation during the whaling eras and recently show evidence of population recovery. Gene flow and shared song indicate overlap between the western (A) and eastern (B1, B2) Breeding Stocks in the South Atlantic and Indian Oceans (C1). Here, we investigated photo-identification evidence of population interchange using images of individuals photographed during boat-based tourism and research in Brazil and South Africa from 1989 to 2022. Fluke images were uploaded to Happywhale, a global digital database for marine mammal identification. Six whales were recaptured between countries from 2002 to 2021 with resighting intervals ranging from 0.76 to 12.92 years. Four whales originally photographed off Abrolhos Bank, Brazil were photographed off the Western Cape, South Africa (feeding grounds for B2). Two whales originally photographed off the Western Cape were photographed off Brazil, one traveling to the Eastern Cape in the Southwestern Indian Ocean (a migration corridor for C1) before migrating westward to Brazil. These findings photographically confirm interchange of humpback whales across the South Atlantic and Indian Oceans and the importance of international collaboration to understand population boundaries.

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First evidence of interchange of humpback whales (Megaptera novaeangliae) between the Magellan Strait and Antarctic Peninsula feeding grounds

Cited by 6 publications

References 26 publications

The Southern Ocean Exchange: porous boundaries between humpback whale breeding populations in southern polar waters

The Southern Ocean Exchange: porous boundaries between humpback whale breeding populations in southern polar waters

Whales and climate

Interchange of Southern Hemisphere humpback whales across the South Atlantic Ocean

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