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8 March 2016 Survivorship pattern inaccuracies and inappropriate anthropomorphism in scholarly pursuits of killer whale (Orcinusorca) life history: a response to Franks et al. (2016)
Todd R. Robeck, Kevin Willis, Michael R. Scarpuzzi, Justine K. O'Brien
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Abstract

Franks et al. (2016) consider that the degree of error in estimated ages used to define survivorship patterns of northern and southern resident killer whale (Orcinus orca) populations is of insignificant impact to estimates of the species' postreproductive lifespan (PRLS). We provide evidence that survival probabilities for killer whales using a dataset comprising estimated age animals differ significantly from that determined using data collected from known-age animals in the Pacific Northwest over the past 40 years. Consequently, our findings indicate that the degree of error in age estimates and ensuing survivorship patterns do not support the notion by Franks et al. (2016) of a prolonged PRLS in the female killer whale that is comparable to the PRLS observed in humans.

© The Author 2016. Published by Oxford University Press on behalf of American Society of Mammalogists. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/ ), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contactjournals.permissions@oup.com
Todd R. Robeck, Kevin Willis, Michael R. Scarpuzzi, and Justine K. O'Brien "Survivorship pattern inaccuracies and inappropriate anthropomorphism in scholarly pursuits of killer whale (Orcinusorca) life history: a response to Franks et al. (2016)," Journal of Mammalogy 97(3), 899-905, (8 March 2016). https://doi.org/10.1093/jmammal/gyw023
Received: 15 December 2015; Accepted: 29 January 2016; Published: 8 March 2016
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