Adams DC, Rohlf FJ, Slice DE (2004) Geometric morphometrics: ten years of progress following the “revolution”. Italian J Zool 71:5–16
Article
Google Scholar
Arzamendia V, Giraudo AR (2009) Influence of large South American rivers of the Plata Basin on distributional patterns of tropical snakes: a panbiogeographical analysis. J Biogeogr 36:1739–1749
Article
Google Scholar
Banguera-Hinestroza E, Cárdenas H, Ruiz-García M, Marmontel M, Gaitán E, Vázquez R, García-Vallejo F (2002) Molecular identification of evolutionarily significant units in the Amazon River dolphin Inia sp. (Cetacea: Iniidae). Journal of Heredity 93:312–322
Article
CAS
PubMed
Google Scholar
Baryshnikov GF, Puzachenko AY (2011) Craniometrical variability in the cave bears (Carnivora, Ursidae): multivariate comparative analysis. Quat Int 245:350–368
Article
Google Scholar
Baryshnikov GF, Puzachenko AY (2012) Craniometrical variability of the Eurasian otter (Lutra lutra: Carnivora: Mustelidae) from the Northern Eurasia. Zoological Institute Russian Academy of Sciences 316(3):203–222
Google Scholar
Blackburn TM, Hawkins BA (2004) Bergmann’s rule and the mammal fauna of northern North America. Ecography 27:715–724
Article
Google Scholar
Blundell GM, Ben-David M, Bowyer RT (2002) Sociality in river otters: cooperative foraging or reproductive strategies? Behav Ecol 13:134–141
Article
Google Scholar
Bookstein EL (1991) Morphometric tools for landmark data: geometry and biology. Cambridge University Press, London
Google Scholar
Bookstein EL (1996) Biometrics, biomathematics and the morphometric synthesis. Bull Math Biol 58:313–365
Article
CAS
PubMed
Google Scholar
Bookstein EL (1997) Landmark methods for forms without landmarks: morphometrics of group differences in outline shape. Med Image Anal 1:225–243
Article
CAS
PubMed
Google Scholar
Cabrera A (1957) Catálogo de los mamíferos de América del Sur. I (Metatheria-Unguiculata-Carnivora). Revista del Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” e Instituto Nacional de Investigación de las Ciencias Naturales. Ciencias Zoológicas 4:1–307
Google Scholar
Cardini A, Jansson AU, Elton S (2007) A geometric morphometric approach to the study of ecogeographical and clinal variation in vervet monkeys. J Biogeogr 34:1663–1678
Article
Google Scholar
Carvalho-Junior O, Macedo-Soares L, Birolo AB (2010) Annual and interannual food habits variability of a Neotropical otter (Lontra longicaudis) population in Conceicao Lagoon, south of Brazil. IUCN Otter Special Group Bulletin 27(1):1–15
Google Scholar
Caumul R, Polly PD (2005) Phylogenetic and environmental components of morphological variation: skull, mandible, and molar shape in marmots (Marmota, Rodentia). Evolution 59:2460–2472
Article
PubMed
Google Scholar
Chemes BS, Graudo RA, Gil G (2010) Dieta de Lontra longicaudis (Carnivora: Mustelidae) en el Parque Nacional El Rey (Salta, Argentina) y su comparación con otras poblaciones de la Cuenca del Paraná. Mastozoología Neotropical 17(1):19–29
Google Scholar
De Queiroz K, Good DA (1997) Phenetic clustering in biology: a critique. Q Rev Biol 72:3–30
Article
Google Scholar
Duarte LC, Rabello ML, Von Zuben FJ, Furtado DS (2000) Variation in mandible shape in Thrichomys apereoides (Mammalia: Rodentia): geometric analysis of a complex morphological structure. Syst Biol 49(3):563–578
Article
CAS
PubMed
Google Scholar
Eizirik E, Bonato SL, Johnson P, Crawshaw PG Jr, Vié JC, Brousset DM et al (1998) Phylogeographic patterns and evolution of the mitochondrial DNA control region in two Neotropical cats (Mammalia, Felidae). J Mol Evol 47:613–624
Article
CAS
PubMed
Google Scholar
Eizirik E, Kim J, Menotti-Raymond M, Grawshaw PG Jr, O’Brien SJ, Johnson WE (2001) Phylogeography, population history and conservation genetics of jaguars (Panthera onca, Mammalia, Felidae). Mol Ecol 10(1):67–79
Article
Google Scholar
Freitas BCH, M-d L, Pissinatti A (1999) Cranial and mandibular morphometry in Leontopithecus Lesson, 1840 (Callitrichidae, Primates). Am J Primatol 48:185–196
Article
Google Scholar
Gallo-Reynoso JP (1997) Situación y distribución de las nutrias en México, en énfasis en Lontra longicaudis annectens MAJOR, 1897. Revista Mexicana de Mastozoologia 2:10–32
Google Scholar
Gallo-Reynoso JP, Ramos-Rosas N, Rangel-Aguilar O (2008) Depredación de aves acuáticas por la nutria neotropical (Lontra longicaudis annectens), en el Río Yaqui, Sonora, México. Revista Mexicana de la Biodiversidad 79:275–279
Google Scholar
Gay SW, Best TL (1996) Relationships between abiotic variables and geographic variation in skulls of pumas (Puma concolor: Mammalia, Felidae) in North and South America. Zool J Linn Soc 117:259–282
Article
Google Scholar
Goodall CR (1991) Procrustes methods in the statistical analysis of shape (with discussion and rejoinder). J R Stat Soc, Ser B 53:285–339
Google Scholar
Gorman TA, Erb JD, McMillan BR, Martin DJ (2006) Space use and sociality of river otters (Lontra canadensis) in Minnesota. J Mammal 87(4):740–747
Article
Google Scholar
Gunz P, Mitteroecker P (2013) Semilandmarks: a method for quantitative curves and surfaces. Hystrix 24(1):103–109
Google Scholar
Harris CJ (1968) Otters: a study of the recent Lutrinae. Weinfield and Nicholson, London
Google Scholar
Hubert N, Renno JF (2006) Historical biogeography of South American freshwater fishes. J Biogeogr 33:1414–1436
Article
Google Scholar
Hubert JM, Duponchelle F, Nuñez J, Garcia-Davila C, Paugy D, Renno JF (2007) Phylogeography of the piranha genera Serrasalmus and Pygocentrus: implications for the diversification of the Neotropical ichthyofauna. Mol Ecol 16:2115–2136
Article
CAS
PubMed
Google Scholar
Iriarte JA, Franklin WL, Johnson WE, Redford KH (1990) Biogeographic variation of food habits and body size of the America puma. Oecologia 85:185–190
Article
Google Scholar
IUCN (2015) The IUCN Red List of Threatened Species. Version 2015.1. <www.iucnredlist.org>.
Jonsson B, Jonsson N (2001) Polymorphism and speciation in Arctic charr. J Fish Biol 58:605–638
Article
Google Scholar
Kendall DG (1984) Shape-manifolds, procrustean metrics, and complex projective spaces. Bull Lond Math Soc 16:81–121
Article
Google Scholar
Kruuk H (2006) Otters: ecology, behaviour and conservation. Oxford University Press, Great Britain
Book
Google Scholar
Langerhans BR, Layman CA, Langerhans AK, Dewitt TJ (2003) Habitat-associated morphological divergence in two Neotropical fish species. Biol J Linn Soc 80:689–698
Article
Google Scholar
Larivière S (1999) Lontra longicaudis, Olfers 1818. Mamm Species 609:1–5
Google Scholar
Larsen PA, Hoofer SR, Bozeman MC, Pedersen SC, Genoways HH, Phillips CJ, Pumo DE, Bajer RJ (2007) Phylogenetics and Phylogeography of the Artibeus jamaicensis complex based on Cytochrome-b DNA sequences. J Mammal 88(3):712–727
Article
Google Scholar
Larson SE (1997) Taxonomic re-evaluation of the jaguar. Zoo Biol 16:107–120
Article
Google Scholar
Lawing AM, Polly PD (2010) Geometric morphometrics: recent applications to the study of evolution and development. J Zool (Lond) 280:1–7
Article
Google Scholar
Lee S, Mill PJ (2004) Cranial variation in British mustelids. J Morphol 260:57–64
Article
CAS
PubMed
Google Scholar
Lynch JM, O’Sullivan WM (1993) Cranial form and sexual dimorphism in the Irish otter Lutra lutra. Biology and Environment: Proceedings of the Royal Irish Academy 93B:97–105
Google Scholar
Lynch JM, Conroy JWH, Kitchener AC, Jefferies DJ, Hayden TJ (1996) Variation in cranial form and sexual dimorphism among five European populations of the otter Lutra lutra. Zoology 238:81–96
Article
Google Scholar
Mancina CA, Balsero F (2010) Variación en la forma de la mandíbula en Monophyllus redmani (Chiroptera: Phyllostomidae): análisis geométrico de la variación sexual y geográfica. Mastozoología Neotropical 17(1):87–95
Google Scholar
Mazák JH (2011) Craniometric variation in the tiger (Panthera tigris): implications for patterns of diversity, taxonomy and conservation. Mamm biol 75:45–68
Google Scholar
Melquist WE, Polechla P Jr, Toweill D (2003) River otter. In: Feldhamer GA, Thompson BC, Chapman JA (eds) Wild mammals of North America: biology, management and conservation, 2nd edn. Johns Hopkins University Press, Baltimore, pp 708–734
Google Scholar
Moors PJ (1980) Sexual dimorphism in the body size of Mustelids (Carnivora): the roles of food habits and breeding systems. Oikos 34:147–158
Article
Google Scholar
Patton JL, Smith MF (1994) Paraphyly, polyphyly, and the nature of species boundaries in pocket gophers (genus Thomomys). Syst Biol 43:11–26
Article
Google Scholar
Pertoldi C, Loeschcke V, Bo Madsen A, Randi E (1997) Developmental stability in the Eurasian otter (Lutra lutra) in Denmark. Ann Zool Fenn 34:187–196
Google Scholar
Pertoldi C, Bo Madsen A, Randi E, Braun A, Loeschcke V (1998) Variation of skull morphometry of Eurasian otters (Lutra lutra) in Denmark and Germany. Ann Zool Fenn 35:87–94
Google Scholar
Pertoldi C, Loeschcke V, Braun A, Bo Madsen A, Randi E (2000) Craniometrical variability and developmental stability. Two useful tools for assessing the population viability of Eurasian otter (Lutra lutra) population in Europe. Biol J Linn Soc 70:309–323
Article
Google Scholar
Pertoldi C, Sonne C, Wiig Ø, Baagøe HJ, Loeschcke V, Bechshøft TØ (2012) East Greenland and Barents Sea polar bears (Ursus maritimus): adaptive variation between two populations using skull morphometrics as an indicator of environmental and genetic differences. Hereditas 149:99–107
Article
PubMed
Google Scholar
Pickles RSA, Groombridge JJ, Zambrana-Rojas VD, Van Damme P, Gotelli D, Kundu S et al (2011) Evolutionary history and identification of conservation units in the giant otter Pteronura brasiliensis. Mol Phylogenet Evol 61:616–627
Article
CAS
PubMed
Google Scholar
Platt GS, Rainwater RT (2011) Predation by Neotropical otter (Lontra longicaudis) on turtles in Belize. IUCN Otter Specialist Group Bulletin 28(1):4–10
Google Scholar
Platz S, Hertwig ST, Jetschke G, Krüger M, Fischer M (2011) Comparative morphometric study of the Slovakian wildcat population (Felis silvestris silvestris): evidence for a low rate of introgression? Mamm Biol 76:222–233
Google Scholar
Pohle H (1920) Die Unterfamilie der Lutrinae. Eine systematisch tiergeographische studie an dem Material der Berliner Messen Archiv für Naturgeschichte 85:1–247
Google Scholar
Ricklefs RE, Miles DB (1994) Ecological and evolutionary inferences from morphology: An ecological perspective. In: Wainwright PC, Reilly SM (eds) Ecological morphology: Integrative organismal biology. University of Chicago Press, USA
Google Scholar
Rohlf FJ (1996) Morphometric spaces, shape components, and the effects of linear transformations. In: Marcus LE, Corti M, Loy A, Naylor G, Slice DE (eds) Advances in morphometrics. Plenum Publishing Corporation, New York, pp 117–129
Chapter
Google Scholar
Rohlf FJ (2001) TPSdig, version 1.23. State University at Stony Brook, New York, software
Google Scholar
Rohlf FJ, Marcus LF (1993) A revolution in morphometrics. Trends Ecol Evol 8:129–132
Article
Google Scholar
Rohlf FJ, Slice D (1990) Extensions of the Procrustes method for the optimal superimposition of landmarks. Syst Zool 39:40–59
Article
Google Scholar
Ruiz-Olmo J, Delibes M, Zapata SC (1998) External morphometry, demography and mortality of the Otter Lutra lutra (Linneo, 1758) in the Iberian Peninsula. Galemys 10:239–251
Google Scholar
Sandell M (1996) The mating tactics and spacing patterns of solitary carnivores. In: Gittleman JL (ed) Carnivore behavior, ecology, and evolution. Cornell University Press, Ithaca, New York, pp 164–182
Google Scholar
Sheets HD (2002) Semiland6. A tool for processing semi-landmarks. Physics Department, Canisius College, Buffalo, New York, http://www.canisius.edu/~sheets/morphsoft.html
Google Scholar
Sheets HD (2003). MakeFan6 [Online]. Available from http://www3.canisius.edu/~sheets/.
Sheets H D (2005a). CoordGen6, Coordinate Generation program for calculating shape coordinates. http://www3.canisius.edu/~sheets/morphsoft.html.
Sheets H D (2005b). CVAGen6, Canonical Variates Analysis program for the analysis of shape, based on partial warp scores. http://www3.canisius.edu/~sheets/morphsoft.html.
Sheets HD, Zeldich ML (2001) Tmorphgen6traditional morphometrics variables generation utility part of IMPIntegrated Morphometrics Package. Physics Department, Canisius College, Buffalo, New York, http://www.canisius.edu/~sheets/morphsoft.html
Google Scholar
Smith HM, Chiszar D, Montanucci RR (1997) Subspecies and classification. Herpetological Review 28:13–16
Google Scholar
StatSoft (2007) STATISTICA (data analysis software system). StatSoft, Inc, Tulsa, Oklahoma
Google Scholar
Thom MD, Harrington LA, MacDonald DW (2004) Why are American mink sexually dimorphic? A role for niche separation. Oikos 105:522–535
Article
Google Scholar
Trinca CS, Thoisy B, Rosas F, Waldemarin HF, Koepfli KP, Vianna J et al (2012) Phylogeography and demographic history of the Neotropical otter (Lontra longicaudis). J Hered 103(4):479–492
Article
PubMed
Google Scholar
Van Zyll CG (1972) A systematic review of the Nearctic and Neotropical river otters (Genus Lutra, Mustelidae, Carnivora). Royal Ontario Museum Life Sciences Contributions 80:112
Google Scholar
Zelditch ML, Swidwerski DL, Sheets HD (2004) Geometric morphometrics for biologists: a primer. Academic Press of Elsevier, Second edition