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1 April 2015 Genetic Monitoring of a Critically-Endangered Seal Population Based on Field-Collected Placentas
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Genetic analyses of non-invasively collected samples are increasingly being used in the monitoring of wildlife populations and individuals. This study is the first describing the use of placentas as non-invasive genetic samples from a natural population. We collected 66 placentas from birth-lair sites of Saimaa ringed seals (Phoca hispida saimensis) after the breeding seasons, with the aim of obtaining DNA from both the pup and the mother. Umbilical cord samples proved to yield the pup genotypes, but mothers could not be genotyped with confidence. Comparisons with existing mtDNA and microsatellite reference data sets showed that placentas can be used for inferring population-level genetic parameters. Our microsatellite panel provided sufficient resolution for genetic identification of individuals but, due to the extremely low variability of the population, parentage and sibship could not be inferred reliably. Field-collected placentas could provide means for genetic monitoring of many other seal species as well.

© Finnish Zoological and Botanical Publishing Board 2015
Mia Valtonen, Matti Heino, Jouni Aspi, Hanna Buuri, Tuomo Kokkonen, Mervi Kunnasranta, Jukka U. Palo, and Tommi Nyman "Genetic Monitoring of a Critically-Endangered Seal Population Based on Field-Collected Placentas," Annales Zoologici Fennici 52(1–2), 51-65, (1 April 2015).
Received: 11 July 2014; Accepted: 13 November 2013; Published: 1 April 2015

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