Wild pedigrees inform mutation rates and historic abundance in baleen whales

Author:

Suárez-Menéndez Marcos1ORCID,Bérubé Martine12ORCID,Furni Fabrício1,Rivera-León Vania E.1ORCID,Heide-Jørgensen Mads-Peter3ORCID,Larsen Finn4,Sears Richard5,Ramp Christian56ORCID,Eriksson Britas Klemens1,Etienne Rampal S.1ORCID,Robbins Jooke2ORCID,Palsbøll Per J.12ORCID

Affiliation:

1. Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands.

2. Center for Coastal Studies, Provincetown, MA, USA.

3. Greenland Institute of Natural Resources, Copenhagen, Denmark.

4. National Institute of Aquatic Resources, Kongens Lyngby, Denmark.

5. Mingan Island Cetacean Study Inc., St. Lambert, Quebec, Canada.

6. Scottish Oceans Institute, University of St. Andrews, St. Andrews, UK.

Abstract

Phylogeny-based estimates suggesting a low germline mutation rate (μ) in baleen whales have influenced research ranging from assessments of whaling impacts to evolutionary cancer biology. We estimated μ directly from pedigrees in four baleen whale species for both the mitochondrial control region and nuclear genome. The results suggest values higher than those obtained through phylogeny-based estimates and similar to pedigree-based values for primates and toothed whales. Applying our estimate of μ reduces previous genetic-based estimates of preexploitation whale abundance by 86% and suggests that μ cannot explain low cancer rates in gigantic mammals. Our study shows that it is feasible to estimate μ directly from pedigrees in natural populations, with wide-ranging implications for ecological and evolutionary research.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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