First record of Burmeister’s porpoise (Phocoena spinipinnis) in the Falkland Islands (Malvinas)

Weir, Caroline R.; Rutherford, Susan

doi:10.1186/s41200-019-0178-1

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…Thus, it reveals preferences for the cool waters of the Humboldt Current in the SE Pacific and the Falklands Current in the SW Atlantic (Rosa et al, 2005;Reeves et al, 2002). It has recently been reported from waters adjacent to the Falkland Islands (Islas Malvinas) (Weir and Rutherford, 2019).…”

Section: Introductionmentioning

confidence: 76%

Antagonistic Behavior by Common Bottlenose Dolphin Tursiops truncatus as Cause of Death for Two Burmeister’s Porpoises Phocoena spinipinnis, in Northern Chile

Guerra-Correa,

Páez-Godoy,

Van Waerebeek

2023

Preprint

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We present the first evidence of lethal interspecific aggressive behavior against Burmeister’s porpoise Phocoena spinipinnis, in a non-predatory context, and the first indications of such behavior in a cetacean from Chilean waters. Two cases, both adult males, are described. Analysis of the fresh tooth rakes, specifically the inter-rake distance, points to common bottlenose dolphin Tursiops truncatus as aggressor. Interdental distances measured on skulls allowed us to exclude Orcinus orca, Globicephala melas, Lagenorhynchus obscurus and Pseudorca crassidens. Evidence of severe blunt trauma, including extensive subdermal hematomas, rupture of pleura and extrusion of lung parenchyma, underscores the level of violent aggression. The reason is unknown but Tursiops truncatus is well-documented to occasionally harass and kill harbour porpoises Phocoena phocoena in the Northern Hemisphere. Considering the scarce information available on the biology and behavioral ecology of Burmeister’s porpoises in Chile and elsewhere, we recommend more systematic field research. Also, as to help formulate effective management measures that can mitigate the main threat for this species in Chile (as in Peru), i.e. fisheries interactions. In Chile, P. spinipinnis is classified as Data Deficient (D.S. N°06-2017), so its real conservation status is unknown.

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Section: Introductionmentioning

confidence: 76%

Antagonistic Behavior by Common Bottlenose Dolphin Tursiops truncatus as Cause of Death for Two Burmeister’s Porpoises Phocoena spinipinnis, in Northern Chile

Guerra-Correa,

Páez-Godoy,

Van Waerebeek

2023

Preprint

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“…The Burmeister's porpoise (P. spinipinnis) is endemic to the Pacific and Atlantic coastal temperate waters of southern and central South America [46]. It is currently classified as Near Threatened [47] based on its limited range, low densities, and high mortality in some fisheries [48]. Individuals of this species are frequently found stranded along the Chilean coast [9], often with signs of fisheries interaction, such as scars caused by fishing nets.…”

Section: Species Identificationmentioning

confidence: 99%

Genetic Analysis as a Tool to Improve the Monitoring of Stranded Cetaceans in Chile

Kraft

Rodríguez

Olavarría

et al. 2023

Biology

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Cetacean strandings are a valuable source of information for several studies from species richness to conservation and management. During the examination of strandings, taxonomic and sex identification might be hindered for several reasons. Molecular techniques are valuable tools to obtain that missing information. This study evaluates how gene fragment amplification protocols can support the records of strandings done in the field in Chile by identifying, corroborating, or correcting the identification of the species and sex of the recorded individuals. Through a collaboration between a scientific laboratory and government institution in Chile, 63 samples were analyzed. Thirty-nine samples were successfully identified to the species level. In total, 17 species of six families were detected, including six species of conservation interest. Of the 39 samples, 29 corresponded to corroborations of field identifications. Seven corresponded to unidentified samples and three to corrected misidentifications, adding up to 28% of the identified samples. Sex was successfully identified for 58 of the 63 individuals. Twenty were corroborations, 34 were previously unidentified, and four were corrections. Applying this method improves the stranding database of Chile and provides new data for future management and conservation tasks.

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Revealing further insights on extralimital records of Burmeister's porpoise (Phocoena spinipinnis, Burmeister, 1865) in the Southwestern Atlantic Ocean

Carvalho,

Ikeda,

Daoualibi

et al. 2024

J. Mar. Biol. Ass.

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Burmeister's porpoise (Phocoena spinipinnis) is an endemic species found in both the South Pacific and Atlantic Oceans, along the coastal regions of South America. In the Southwestern Atlantic Ocean, the species is reported from Tierra del Fuego, Argentina to Santa Catarina, Brazil, and the Falkland Islands. This study provides new insights on two stranded P. spinipinnis specimens in Southeastern Brazil, including the first occurrence in the state of Rio de Janeiro. Despite the advanced decomposition of the carcasses, which limited necropsy findings, we provide new data on the general characteristics of the specimens found in this extralimital geographical range, such as total body length, age, sex, vertebral count, and cranial measurements.

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First record of Burmeister’s porpoise (Phocoena spinipinnis) in the Falkland Islands (Malvinas)

Cited by 3 publications

References 5 publications

Antagonistic Behavior by Common Bottlenose Dolphin Tursiops truncatus as Cause of Death for Two Burmeister’s Porpoises Phocoena spinipinnis, in Northern Chile

Antagonistic Behavior by Common Bottlenose Dolphin Tursiops truncatus as Cause of Death for Two Burmeister’s Porpoises Phocoena spinipinnis, in Northern Chile

Genetic Analysis as a Tool to Improve the Monitoring of Stranded Cetaceans in Chile

Revealing further insights on extralimital records of Burmeister's porpoise (Phocoena spinipinnis, Burmeister, 1865) in the Southwestern Atlantic Ocean

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