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1 October 2006 ESTIMATION OF EUROPEAN OTTER (LUTRA LUTRA) POPULATION SIZE BY FECAL DNA TYPING IN SOUTHERN ITALY
Claudio Prigioni, Luigi Remonti, Alessandro Balestrieri, Silvia Sgrosso, Giuseppe Priore, Nadia Mucci, Ettore Randi
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Abstract

Population size of European otters (Lutra lutra) was estimated in Pollino National Park (southern Italy) by genetic typing of fresh feces collected in the field. Of 187 fecal samples gathered, 185 (98.9%) yielded otter DNA, 77 (41.2%) were successfully typed, and 23 different genotypes were identified. A nonlinear regression between the number of typed spraints and the cumulative number of identified genotypes was repeated after randomization of the sample until it gave an estimated otter population of 34–37 animals (0.18–0.20 otters/km of watercourse). The applied method represents a valuable conservation tool, combining the advantages of an indirect survey with the accuracy of an exhaustive census.

Claudio Prigioni, Luigi Remonti, Alessandro Balestrieri, Silvia Sgrosso, Giuseppe Priore, Nadia Mucci, and Ettore Randi "ESTIMATION OF EUROPEAN OTTER (LUTRA LUTRA) POPULATION SIZE BY FECAL DNA TYPING IN SOUTHERN ITALY," Journal of Mammalogy 87(5), 855-858, (1 October 2006). https://doi.org/10.1644/05-MAMM-A-294R1.1
Accepted: 1 March 2006; Published: 1 October 2006
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KEYWORDS
fecal DNA
Italy
Lutra lutra
microsatellite
otter density
survey technique
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