Pygmy Killer Whales ( Feresa attenuata ) or False Killer Whales ( Pseudorca crassidens )? Identification of a Group of Small Cetaceans Seen off Ecuador in 2003

@article{Baird2010PygmyKW,
  title={Pygmy Killer Whales ( Feresa attenuata ) or False Killer Whales ( Pseudorca crassidens )? Identification of a Group of Small Cetaceans Seen off Ecuador in 2003},
  author={Robin W. Baird},
  journal={Aquatic Mammals},
  year={2010},
  volume={36},
  pages={326-327}
}
  • R. Baird
  • Published 1 September 2010
  • Environmental Science
  • Aquatic Mammals
Pygmy killer whales (Feresa attenuata) are a very poorly known species (Donahue & Perryman, 2009; McSweeney et al., 2009), and single sightings or strandings still often warrant publication. Castro (2004) reported an encounter with a school of small cetaceans off Ecuador in 2003, identified by the author as pygmy killer whales, and described details on the behavior of the group. Features noted in the field that were used to determine the species included estimates of their small size (1 to 2.5… 

Figures from this paper

Movements of two satellite-tagged pygmy killer whales (Feresa attenuata) off the island of Hawai'i
Abstract : Pygmy killer whales (Feresa attenuata) are a rare tropical oceanic odontocete that are normally found close to shore only around oceanic islands (Donahue and Perryman 2009, McSweeney et
The first authenticated record of Pygmy Killer Whale (Feresa attenuata Gray 1874) in Mozambique; has it been previously overlooked?
TLDR
This is the first authenticated record of Pygmy killer whale in Mozambican waters and the first recent record on the eastern coast of southern Africa since 1970, emphasising the lack of knowledge of offshore marine biodiversity in Moz Mozambique.
Insights into the diet of a poorly known species: pygmy killer whale Feresa attenuata from Cape Verde, West Africa
TLDR
The stomach contents of two F. attenuata recently stranded in Cape Verde, West Africa, were examined and a variety of fish hard parts and otoliths were recovered, in addition to the upper beak from an unidentified cephalopod and the remains of some marine arthropods.
False killer whale (Pseudorca crassidens) sightings in continental shelf habitat off Gabon and Côte d'Ivoire (Africa)
caroline r. weir, tim collins, terry cross, alison gill, simon elwen, michael unwin and richard j. parnell Ketos Ecology, 4 Compton Road, Kingsbridge, Devon, TQ7 2BP, UK, Department of Zoology,
How to tell them apart? Discriminating tropical blackfish species using fin and body measurements from photographs taken at sea
TLDR
This study established a reliable means of distinguishing four species of Hawaiian “blackfish”: pygmy killer, melon-headed, short-finned pilot, and false killer whales, which will improve the efficacy of management in areas with sympatric distributions.
MOUTHLINE INJURIES AS AN INDICATOR OF FISHERIES INTERACTIONS IN HAWAIIAN ODONTOCETES by Kelly Ashlyn Beach
Mouthline Injuries as an Indicator of Fisheries Interactions in Hawaiian Odontocetes Kelly A. Beach Evidence from strandings and anecdotal reports indicate that a number of odontocete species
Getting to know you: Identification of pygmy killer whales ( Feresa attenuata) and melon-headed whales (Peponocephala electra) under challenging conditions
TLDR
A correta identificacao dos tres exemplares como orca-pigmeia coloca uma intrigante questao sobre a conservacao dessa especie no Atlântico Sul tropical.

References

SHOWING 1-5 OF 5 REFERENCES
Pygmy Killer Whale: Feresa attenuata
Site fidelity and association patterns of a rare species: Pygmy killer whales (Feresa attenuata) in the main Hawaiian Islands
TLDR
Assessment of pygmy killer whales off the island of Hawai’i indicates a small population of island-associated individuals that may be at risk from anthropogenic impacts and association analyses indicate stable long-term associations in mixed-sex groups.
Encounter with a School of Pygmy Killer Whales ( Feresa attenuata ) in Ecuador, Southeast Tropical Pacific
On 1 September 2003, a school of about 70 pygmy killer whale (Feresa attenuata) of several sizes (lengths varying form 1 to 2.5 m approximately) was sighted. The sighting was made around the La Plata
False killer whales (Pseudorca crassidens) around the main Hawaiian Islands: Long-term site fidelity, inter-island movements, and association patterns
Abstract : Despite their world-wide distribution throughout the tropics and subtropics false killer whales (Pseudorca crassidens) are one of the lesser-known large odontocetes. Genetic evidence
False killer whales
  • 1986