Site fidelity, associations, and movements of cuvier's (Ziphius cavirostris) and blainville's (Mesoplodon densirostris) beaked whales off the island of Hawai‘i
Although the Ziphiidae are the second-most speciose family of cetaceans, information on beaked whale species and populations has been limited by the difficulties in finding and approaching free-ranging individuals. Site fidelity, patterns of association, and movements of two species, Cuvier's (Ziphius cavirostris) and Blainville's (Mesoplodon densirostris) beaked whales, were assessed using a 21-yr photographic data set from the west coast of the island of Hawaii. Resightings of individuals of both species spanned 15 yr, suggesting long-term site fidelity to the area. Long-term resightings were documented primarily from adult females of both species. Group sizes for both species were small and most groups had only a single adult male present. For Blainville's beaked whales, repeated associations between adult females and adult males were documented for all resightings of adult males over periods from 1 to 154 d. Among adult females, although repeated associations occurred up to 9 yr apart, individuals were seen separately in intervening years. Individuals of both species seen on multiple occasions were typically documented in multiple months/seasons, suggesting they may use the study area throughout the year. Such long-term site fidelity has implications both for potential population structure and for susceptibility of beaked whale populations to anthropogenic impacts.
%0 Journal Article
%1 mcsweeney_site_2007
%A McSweeney, Daniel
%A Baird, Robin
%A Mahaffy, Sabre
%D 2007
%J Marine Mammal Science
%K Association cetacean, index, odontocetes
%N 3
%P 666--687
%T Site fidelity, associations, and movements of cuvier's (Ziphius cavirostris) and blainville's (Mesoplodon densirostris) beaked whales off the island of Hawai‘i
%U http://dx.doi.org/10.1111/j.1748-7692.2007.00135.x
%V 23
%X Although the Ziphiidae are the second-most speciose family of cetaceans, information on beaked whale species and populations has been limited by the difficulties in finding and approaching free-ranging individuals. Site fidelity, patterns of association, and movements of two species, Cuvier's (Ziphius cavirostris) and Blainville's (Mesoplodon densirostris) beaked whales, were assessed using a 21-yr photographic data set from the west coast of the island of Hawaii. Resightings of individuals of both species spanned 15 yr, suggesting long-term site fidelity to the area. Long-term resightings were documented primarily from adult females of both species. Group sizes for both species were small and most groups had only a single adult male present. For Blainville's beaked whales, repeated associations between adult females and adult males were documented for all resightings of adult males over periods from 1 to 154 d. Among adult females, although repeated associations occurred up to 9 yr apart, individuals were seen separately in intervening years. Individuals of both species seen on multiple occasions were typically documented in multiple months/seasons, suggesting they may use the study area throughout the year. Such long-term site fidelity has implications both for potential population structure and for susceptibility of beaked whale populations to anthropogenic impacts.
@article{mcsweeney_site_2007,
abstract = {Although the Ziphiidae are the second-most speciose family of cetaceans, information on beaked whale species and populations has been limited by the difficulties in finding and approaching free-ranging individuals. Site fidelity, patterns of association, and movements of two species, Cuvier's (Ziphius cavirostris) and Blainville's (Mesoplodon densirostris) beaked whales, were assessed using a 21-yr photographic data set from the west coast of the island of Hawaii. Resightings of individuals of both species spanned 15 yr, suggesting long-term site fidelity to the area. Long-term resightings were documented primarily from adult females of both species. Group sizes for both species were small and most groups had only a single adult male present. For Blainville's beaked whales, repeated associations between adult females and adult males were documented for all resightings of adult males over periods from 1 to 154 d. Among adult females, although repeated associations occurred up to 9 yr apart, individuals were seen separately in intervening years. Individuals of both species seen on multiple occasions were typically documented in multiple months/seasons, suggesting they may use the study area throughout the year. Such long-term site fidelity has implications both for potential population structure and for susceptibility of beaked whale populations to anthropogenic impacts.},
added-at = {2017-01-09T13:57:26.000+0100},
author = {McSweeney, Daniel and Baird, Robin and Mahaffy, Sabre},
biburl = {https://www.bibsonomy.org/bibtex/2d4d34a4b8926c09e4abbf719c33c2a64/yourwelcome},
interhash = {63de6b48024b4cfc511014557efcc386},
intrahash = {d4d34a4b8926c09e4abbf719c33c2a64},
issn = {0824-0469},
journal = {Marine Mammal Science},
keywords = {Association cetacean, index, odontocetes},
number = 3,
pages = {666--687},
timestamp = {2017-01-09T14:01:11.000+0100},
title = {Site fidelity, associations, and movements of cuvier's ({Ziphius} cavirostris) and blainville's ({Mesoplodon} densirostris) beaked whales off the island of {Hawai}‘i},
url = {http://dx.doi.org/10.1111/j.1748-7692.2007.00135.x},
urldate = {2012-02-26},
volume = 23,
year = 2007
}