Omura's whale off West Africa: autochthonous population or inter-oceanic vagrant in the Atlantic Ocean?

Jung, Jean-Luc; Mullié, Wim C.; Waerebeek, Koen Van; Wagne, Moulaye Mohamed; Bilal, Abdellahi Samba Ould; Sidaty, Zein El Abidine Ould; Toomey, Lola; Méheust, Eleonore; Marret, F.

doi:10.1080/17451000.2015.1084424

Cited by 15 publications

(35 citation statements)

References 31 publications

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“…, Jung et al . ) these characteristics are now within the species’ range. The mandible shape was also different from the characters described for blue and sei whales, in which the angular portion ends before the hind edge of the condyle (Miller , Omura et al .…”

Section: Resultsmentioning

confidence: 89%

“…) and a specimen stranded on the Mauritania coast, in West Africa, in 2013 (Jung et al . ) occurred, extending the known range of the Omura's whale to the southwestern Indian Ocean and the northeastern Atlantic Ocean. Our finding is the first record of this species in the South Atlantic, and the specimen found stranded on the Mauritania is the first record in the North Atlantic, reinforcing the hypothesis of the occurrence of Omura's whale in the Atlantic Ocean.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, the hypothesis that the individual is a hybrid with maternal Omura's whale parent is very unlikely as argued by Jung et al . (), but to test this it would be necessary to have information on biparental markers on all the species of the group.…”

Section: Discussionmentioning

confidence: 99%

“…With the new data presented recently and here, it may be possible to begin to answer the question raised by Jung et al . (): Is there an autochthonous Omura's whale population in the Atlantic or are these vagrant individuals? Jung et al .…”

Section: Discussionmentioning

confidence: 99%

“…; Jung et al . ). We also included sequences from the new Bryde's complex clade from the northern Gulf of Mexico ( B. e. GOMx ) (Rosel and Wilcox ) and the sei whale ( B. borealis ) since this species is also considered a member of this complex (Sasaki et al .…”

Section: Methodsmentioning

confidence: 97%

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Rare or cryptic? The first report of an Omura's whale (Balaenoptera omurai) in the South Atlantic Ocean

Cypriano-Souza

Meirelles

Carvalho

et al. 2016

Marine Mammal Science

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The Omura's whale (Balaenoptera omurai), previously referred to as a small form of Bryde's whale, was described in 2003 as a distinct baleen whale species of the family Balaenopteridae. Omura's whales are currently confirmed to occur in three of the world's oceans; the western Pacific, Indian, and northeastern Atlantic. Here we report the genetic identification and a morphological description of a 4.16 m female calf of an Omura's whale found stranded in Pecém beach (03°32′11.6″S, 38°47′51.8″W), northeastern Brazil, in 2010. The three mitochondrial DNA markers (control region, cytochrome b, and cytochrome c oxidase subunit 1) unequivocally identified the specimen as a B. omurai, providing the first report of this species in the South Atlantic Ocean. The morphological identification of the specimen was limited due to the absence of the skull and loss of color pattern, but the proportions of the body were not consistent with the other balenopterid species and a single rostrum ridge distinguished it from Bryde's whales. This, together with the record of another juvenile in Mauritania, suggests the existence of an autochthonous Atlantic population of Omura's whales and indicates a necessity of reassessment of specimens indicated as Bryde's whale in the region.

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Section: Resultsmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 97%

See 3 more Smart Citations

Rare or cryptic? The first report of an Omura's whale (Balaenoptera omurai) in the South Atlantic Ocean

Cypriano-Souza

Meirelles

Carvalho

et al. 2016

Marine Mammal Science

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Baleen Whale Vocalizations

White,

Todd

2023

Noisy Oceans

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Occurrence of Omura’s whale, Balaenoptera omurai (Cetacea: Balaenopteridae), in the Equatorial Atlantic Ocean based on Passive Acoustic Monitoring

Moreira

Weksler

Sousa‐Lima

et al. 2020

Journal of Mammalogy

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The current known distribution of Omura’s whale includes the tropical and warm temperate waters of the western Pacific, Indian, and Atlantic Oceans. Evidence of their presence in the Atlantic Ocean is based on beach cast specimens found on the coasts of Mauritania (North Atlantic) and Northeastern Brazil (South Atlantic). The present study characterizes the occurrence of this species in the São Pedro and São Paulo Archipelago (SPSPA), on the mid-Atlantic ridge between South America and Africa, based on autonomous recording systems. Acoustic signals were similar, but not identical, to B. omurai vocalizations recorded off the coast of Madagascar. Although these signals were recorded for only 11 months, there are peaks in vocal activity between May and June in the vicinities of SPSPA, suggesting either a shift in distribution within the Atlantic equatorial waters or seasonality in the species’ vocal behavior in this region. The first acoustic records of Omura’s whales in the Equatorial Atlantic suggest that these animals may also use deep-water habitats, in addition to the shallow-water habitat use observed in other regions.

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Omura's whale off West Africa: autochthonous population or inter-oceanic vagrant in the Atlantic Ocean?

Cited by 15 publications

References 31 publications

Rare or cryptic? The first report of an Omura's whale (Balaenoptera omurai) in the South Atlantic Ocean

Rare or cryptic? The first report of an Omura's whale (Balaenoptera omurai) in the South Atlantic Ocean

Baleen Whale Vocalizations

Occurrence of Omura’s whale, Balaenoptera omurai (Cetacea: Balaenopteridae), in the Equatorial Atlantic Ocean based on Passive Acoustic Monitoring

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