Pygmy Sperm Whale (Kogin breiJiceps) stranding record  in Tasmania, Australia, and diet of a single specimen

Beasley, Isabel; Cherel, Yves; Robinson, Sue; Betty, Emma L.; Gales, Rosemary

doi:10.26749/rstpp.147.25

Cited by 7 publications

(5 citation statements)

References 21 publications

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“…There are significant challenges when observing these deep-diving and elusive species at sea (Baird, 2005;Geraci and Lounsbury, 2005). Stranding reports can therefore provide critical information on species biology and distribution, in addition to threats and individual health (Peltier et al, 2012;Beasley et al, 2013;Bonato et al, 2016). There is a total of 20 recorded strandings of Kogia spp.…”

Section: Introductionmentioning

confidence: 99%

Short Communication: Pregnant dwarf sperm whale (Kogia sima) stranding in Palk Bay, India: Insights and significance of stranding records

Chandrasekar,

2024

JCRM

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This Short Communication describes the stranding of a pregnant dwarf sperm whale (Kogia sima) in Palk Bay, India. The dwarf sperm whale is little understood in Indian waters and considered to be one of the most unusual and rare stranded cetaceans in some parts of Tamil Nadu. While these whales have been more common in Palk Bay over recent years, only few stranding events have been reported. This study focuses on the first-documented stranding of a pregnant dwarf sperm whale in Indian waters, highlighting the significance of Palk Bay and associated waters as breeding grounds which can impact the population status.

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Section: Introductionmentioning

confidence: 99%

Short Communication: Pregnant dwarf sperm whale (Kogia sima) stranding in Palk Bay, India: Insights and significance of stranding records

Chandrasekar,

2024

JCRM

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“…Monitoring marine mammal strandings is widely recognised as a valuable source of biological and ecological information on species otherwise difficult to observe at sea (Evans and Hammond 2004;Dalebout et al 2005;Beasley et al 2013). Close scientific monitoring of stranded marine mammals can provide low cost critical evidence of the threats faced by some populations, including disease outbreaks, incidental fisheries takes ('bycatch'), shipstrikes, ingestion and entanglement in marine debris, and impacts of anthropogenic sounds (Laist et al 2001;Cox et al 2006;Meynecke and Meager 2016;Unger et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Marine mammal strandings recorded in New Caledonia, South West Pacific Ocean, 1877 to 2022

Garrigue,

Derville,

Bonneville

et al. 2023

Pacific Conserv. Biol.

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Context Strandings are an important source of information for estimating marine mammal biodiversity, particularly in data-sparse ocean basins such as Oceania. Aims Here, we report on knowledge acquired from 218 stranding events recorded in the waters of New Caledonia (1877–2022). Methods We investigated spatio-temporal distribution, stable isotope signatures, trace element concentrations, biometry measurements, genetic diversity, and diet, for the four most commonly stranded taxa (dugongs, 35% of events; sperm whales, 19%; Delphinidae, 18%; pygmy and dwarf sperm whales, 14%). Key results Beginning in 1991, reports of stranding events increased (183 events, 322 individuals, 20 species from seven families: Dugongidae, Physeteridae, Delphinidae, Kogiidae, Ziphiidae, Balaenopteridae, Otariidae), with hotspots identified on the west coast (Bourail, Ouano, Nouméa) and in Prony Bay. Causes of death were not determined in 84% of stranding events, but were identified in the majority of expert-led necropsies (24 of 29 individuals from 10 species). Yet, valuable information regarding the impact of anthropogenic activities was gathered for some species of concern, such as the endangered dugong (28% human-caused). Since 2016, training and outreach have been provided to rangers, veterinarians, and various public safety officers to support their engagement in the scientific monitoring of marine mammal strandings. A website (www.rescue.ird.nc) was developed to facilitate standardised data collection and storage, and to provide public access to stranding records. Conclusion Although the number of individuals reported here remains modest, this study provides new information on poorly documented species in New Caledonia. Implications Long-term monitoring of strandings can help design effective conservation measures.

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“…Whereas K. breviceps is frequently reported from both tropical and warm temperate waters, K. sima generally restricts its presence to tropical or subtropical waters (Caldwell and Caldwell, 1989;McAlpine, 2009;Jefferson et al, 2015). Stranding reports and sighting surveys are important sources of information regarding the distribution and biology of uncommonly sighted Kogia species (Beasley et al, 2013;Bonato et al, 2016). Due to the morphological similarities, it is extremely difficult to differentiate the two species during sighting events (Willis and Baird, 1998;Baird, 2005).…”

Section: Introductionmentioning

confidence: 99%

Confirmation of pygmy sperm whale, Kogia breviceps from Palk Bay, India through Cytochrome Oxidase1 (COI) sequence

Chandrasekar

K²,

et al. 2021

JCRM

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The identity of a stranded cetacean from the Palk Bay has been confirmed as a pygmy sperm whale (Kogia breviceps) by the partial sequencing of mitochondrial gene cytochrome oxidase subunit-I (COI). The specimen was unambiguously discriminated from the COI sequence of Kogia sima by matching exactly with the sequence of K. breviceps. Stranding events of the pygmy whales are considered to be uncommon. The sequence developed for K. breviceps is the first of its kind attempt from Indian waters.

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Pygmy Sperm Whale (Kogin breiJiceps) stranding record in Tasmania, Australia, and diet of a single specimen

Cited by 7 publications

References 21 publications

Short Communication: Pregnant dwarf sperm whale (Kogia sima) stranding in Palk Bay, India: Insights and significance of stranding records

Short Communication: Pregnant dwarf sperm whale (Kogia sima) stranding in Palk Bay, India: Insights and significance of stranding records

Marine mammal strandings recorded in New Caledonia, South West Pacific Ocean, 1877 to 2022

Confirmation of pygmy sperm whale, Kogia breviceps from Palk Bay, India through Cytochrome Oxidase1 (COI) sequence

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