Analysis of mitochondrial DNA restriction fragment patterns in killer whales, Orcinus orca

Stevens, Tracy Alison

doi:10.15760/etd.5812

Cited by 1 publication

(1 citation statement)

References 34 publications

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“…Research on cetacean coloration has largely focused on the more distinctly marked odontocetes (Mercer, 1973;Mitchell, 2011). Several studies report geographic variation in the saddle patch, dorsal cape, and postocular patch of killer whales (Orcinus orca; Baird & Stacey, 1988;Evans et al, 1982;Visser & Mäkeläinen, 2000). Similarly, the color pattern components of white-beaked (Lagenorhynchus albirostris; Bertulli et al, 2016), spotted (Stenella frontalis; F I G U R E 7 Multiple correspondence analysis between the left-hand side (LHS) and right-hand side (RHS) character states of each element and subelement (see supplementary material for abbreviations) for the 2017 cohort of dwarf minke whales (DMWs).…”

Section: Discussionmentioning

confidence: 99%

Color pattern complexity in dwarf minke whales (Balaenoptera acutorostrata) of the northern Great Barrier Reef of Australia

Hutchings

Hamann

Smithers

et al. 2023

Marine Mammal Science

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Complex color patterning is a characteristic feature of dwarf minke whales (DMWs; Balaenoptera acutorostrata) which has been used to photographically identify (photo‐ID) individuals and to research an aggregation on Australia's Great Barrier Reef (GBR). DMW color patterns have been described and applied in various studies, but a detailed and systematic analysis of their complexity is yet to be performed. Here, we applied a novel categorization tool to assess the variation, asymmetry, and association of several DMW color pattern elements, subelements, and their character states. Proportions, hierarchical clustering, and multiple correspondence analysis revealed a high level of asymmetric color pattern variation, with white markings dominant and associated on the right of the body. Our results will improve the citizen science driven photo‐ID of this little‐known cetacean as labor‐intensive manual methods transition to more efficient automated approaches. Such advancement will be challenging, yet beneficial for broader research into the poorly understood areas of DMW life history, evolution, genetics, social structure, and feeding. This could also potentially allow investigation into the functional significance of their color patterns.

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Section: Discussionmentioning

confidence: 99%

Color pattern complexity in dwarf minke whales (Balaenoptera acutorostrata) of the northern Great Barrier Reef of Australia

Hutchings

Hamann

Smithers

et al. 2023

Marine Mammal Science

View full text Add to dashboard Cite

show abstract

Analysis of mitochondrial DNA restriction fragment patterns in killer whales, Orcinus orca

Abstract: The mitochondrial DNA restriction fragment patterns of killer whales (Orcinus orca) were investigated in order to determine the level of genetic differentiation that exists between killer whales from various geographic locati ons.Twenty one killer whales were examined,

Cited by 1 publication

References 34 publications

Color pattern complexity in dwarf minke whales (Balaenoptera acutorostrata) of the northern Great Barrier Reef of Australia

Color pattern complexity in dwarf minke whales (Balaenoptera acutorostrata) of the northern Great Barrier Reef of Australia

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