First Mention of a Wolf-Pack with Black Phenotypes in Provence (Sainte-Baume, France): Genetic Investigation of a Suspected Hybridization Event

Keywords: Canis lupus, (wolf-dog) hybrid, hybridisation, large carnivore, detection dog, faecal samples, camera trapping, genotype

Abstract

We document the first appearance of a wolf pack with black individuals in France. Black-coated wolves are excessively rare in Europe and are usually suspected of being wolf x dog hybrids. Camera trapping (CT) was used to characterize the phenotypes of the wolf pack’s grey and black wolves. We used a detection dog to rapidly identify and noninvasively collect fresh wolf scats. The male wolf of the breeding pair exhibited the typical phenotype of a grey wolf, whereas the reproducing female was black-coated. Four of the six pups were black, and two were grey. Analysis of microsatellite markers, using French wolves genotypes as reference, revealed that none of the wolves were first or second generation hybrids. In accordance with previous studies, we conclude that atypical phenotypes makes it possible to suspect wolf x dog hybridization, but genetic analyses remain necessary to assign an individual canid to a genetic class.

References

Anderson, T. M., Vonholdt, B. M., Candille, S. I., Musiani, M., Greco, C., Stahler, D. R., Smith, D. W., Padhukasahasran, B., Randi, E., Leonard, J. A., Bustamante, C. D., Ostrander, E. A., Tang, H., Wayne, R. K. & Barsh, G. S. 2009. Molecular and evolutionary history of melanism in North American gray wolves. Science, 323, 1339-1343.

https://doi.org/10.1126/science.1165448

Apollonio, M., Mattioli, L. & Scandura, M. 2004. Occurrence of black wolves in the Northern Apennines, Italy. Acta Theriologica, 49 (2), 281-285.

https://doi.org/10.1007/BF03192528

Bohling, J. H., & Waits, L. P. 2011. Assessing the prevalence of hybridization between sympatric Canis species surrounding the red wolf (Canis rufus) recovery area in North Carolina. Molecular Ecology, 20 (10), 2142-2156

https://doi.org/10.1111/j.1365-294X.2011.05084.x

Candille, S. I., Kaelin, C. B., Cattanach, B. M., Yu, B., Thompson, D. A., Nix, M. A., Kerns, J. A., Schmutz, S. M., Milhauser, G. L. & Barsh, G. S. 2007. A -defensin mutation causes black coat color in domestic dogs. Science, 318, 1418-1423.

https://doi.org/10.1126/science.1147880

Caniglia, R., Fabbri, E., Greco, C., Galaverni, M., Manghi, L., Boitani, L., Sforzi, A. & Randi E. 2013. Black coats in an admixed wolf ︎ dog pack is melanism an indicator of hybridization in wolves?. Eur J Wildl Res., 59, 543-555

https://doi.org/10.1007/s10344-013-0703-1

Canu, A., Mattioli, L., Santini, A., Apollonio, M. & Scandura, M. 2017. "Video-scats": combining camera trapping and non-invasive genotyping to assess individual identity and hybrid status in gray wolf. Wildlife biology, 1.

https://doi.org/10.2981/wlb.00355

Chapron, G., Kaczensky, P., Linnell, J. D. C., Arx, von, M., Huber, D., Andrén, H., López-Bao, J.V., Adamec, M., Álvares, F., Anders, O., Balčiauskas, L., Balys, V., Bedő, P., Bego, F., Blanco, J.C., Breitenmoser, U., Brøseth, H., Bufka, L., Bunikyte, R., Ciucci, P., Dutsov, A., Engleder, T., Fuxjäger, C., Groff, C., Holmala, K., Hoxha, B., Iliopoulos, Y., Ionescu, O., Jeremić, J., Jerina, K., Kluth, G., Knauer, F., Kojola, I., Kos, I., Krofel, M., Kubala, J., Kunovac, S., Kusak, J., Kutal, M., Liberg, O., Majić, A., Männil, P., Manz, R., Marboutin, E., Marucco, F., Melovski, D., Mersini, K., Mertzanis, Y., Mysłajek, R. W., Nowak, S., Odden, J., Ozolins, J., Palomero, G., Paunović, M., Persson, J., Potočnik, H., Quenette, P.-Y., Rauer, G., Reinhardt, I., Rigg, R., Ryser, A., Salvatori, V., Skrbinšek, T., Stojanov, A., Swenson, J. E., Szemethy, L., Trajçe, A., Tsingarska-Sedefcheva, E., Váňa, M., Veeroja, R., Wabakken, P., Wölfl, M., Wölfl, S., Zimmermann, F., Zlatanova, D. & Boitani, L. 2014. Recovery of large carnivores in Europe's modern human-dominated landscapes. Science, 346, 1517-1519.

https://doi.org/10.1126/science.1257553

Ciucci, O., Reggioni, W., Maiorano, L. & Boitani, L. 2009. Long-distance dispersal of a rescued wolf from the northern Apennines to the western Alps. J. Wildlife Management, 73 (8), 1300-1306.

https://doi.org/10.2193/2008-510

Council of Europe. 2014. Recommandation n°173 du Comité permanent, adoptée le 5 décembre 2014, sur les croisements entre les Loups gris sauvages (Canis lupus) et les chiens domestique (Canis lupus familiaris). https://rm.coe.int/1680746989

Cubaynes, S., Brandell, E. E., Stahler, D. R., Smith, D. W., Almberg, E. S., Schindler, S., Wayne, R. K., Dobson, A. P., VonHoldt, B. M., MacNulty, D. R., Cross, P. C., Hudson, P. J. & Coulson, T. 2022. Disease outbreaks select for mate choice and coat color in wolves. Science, 378, 300-303.

https://doi.org/10.1126/science.abi8745

Données DDT(M)-DREAL Auvergne Rhône Alpes. 2019. Données sur les dommages: comparatif 2017-2018-2019. http://www.auvergne-rhone-alpes.developpement-durable.gouv.fr/IMG/pdf/20200327_donnees_dommages_2019.pdf

Donfrancesco, V., Ciucci, P., Salvatori, V., Benson, D., Andersen, L.W., Bassi, E., Blanco, J.C., Boitani, L., Caniglia, R., Canu, A., Capitani, C., Chapron, G., Czarnomska, S.D., Fabbri, E., Galaverni, M., Galov, A., Gimenez, O., Godinho, R., Greco, C., Hindrikson, M., Huber, D., Hulva, P., Jedrzejewski, W., Kusak, J., Linnell, J. D. C., Llaneza, L., Lopez-Bao, J. V., Mänill, P., Marucco, F., Mattioli, L., Milanesi, P., Milleret, C., Myslajek, R. W., Ordiz, A., Palacios, V., Pedersen, H. C., Pertoldi, C., Pilot, M., Randi, E., Rodriguez, A., Saarma, U., Sand, H., Scandura, M., Stronen, A. V., Tsingarska, E. & Mukherjee, N. 2019. Unravelling the scientific debate on how to address Wolf-Dog hybridization in Europe. Front. Ecol. Evol., 7, 175.

https://doi.org/10.3389/fevo.2019.00175

Duchamp, C. & Queney G. 2018. Le suivi génétique des loups en 2018. Bilan de la 1ère année de mise en œuvre du nouveau marché public. 1-19. https://www.loupfrance.fr/wp-content/uploads/LE-SUIVI-GENETIQUE-DES-LOUPS-EN-2018_201903.pdf

Fabri, E., Miquel, C., Lucchini, V., Santini,A., Caniglia, R., Duchamps, C., Weber, J-M., Lequette, B., Marucco, F., Boitani, L., Fumagalli, L., Taberlet, P. & Randi, E. 2007. From the Apennines to the Alps: colonization genetics of the naturally expanding Italian wolf (Canis lupus) population. Molecular Ecology, 16, 1661-1671.

https://doi.org/10.1111/j.1365-294X.2007.03262.x

Falush, D., Stephens, M. & Pritchard, J. K. 2003. Inference of population structureusing multilocus genotype data: linked loci and correlated allele frequencies. Genetics, 164, 1567-1587.

https://doi.org/10.1093/genetics/164.4.1567

Francisco, L. V., Langston, A. A., Mellersh, C. S., Neal, C. L., & Ostrander, E. A. 1996. A class of highly polymorphic tetranucleotide repeats for canine genetic mapping. Mammalian genome : official journal of the International Mammalian Genome Society, 7 (5), 359-362

https://doi.org/10.1007/s003359900104

Galaverni, M., Caniglia, R., Pagani, L., Fabbri, E., Boattini, A., Randi, E. 2017. Disentangling timing admixture, patterns of introgression, and phenotypic indicators in a hybridizing wolf population. Mol. Biol. Evol., 34 (9), 2324-2339.

https://doi.org/10.1093/molbev/msx169

Gibson, P. S., Bangs, E. E., Bailey, T. N., Boyd, D. K., Cluff, H. D., Smith, D. W. & Jiminez, M. D., 2002. Color patterns among wolves in Western North America. Wildlife Bulletin Society, 30 (3), 821-830.

Godinho, R., Llaneza, L., Blanco, J. C., Lopes, S., Álvares, F., García, E. J., Palacios, V., Cortés, Y., Telegon, J. & Ferrand, N. 2011. Genetic evidence for multiple events of hybridization between wolves and domestic dogs in the Iberian Peninsula. Mol. Ecol. 20, 5154-5166.

https://doi.org/10.1111/j.1365-294X.2011.05345.x

Godinho, R., López-Bao, J. V., Castro, D., Llaneza, L., Lopes, S., Silva, P. & Ferrand, N. 2015. Real-time assessment of hybridization between wolves and dogs: combining noninvasive samples with ancestry informative markers. Molecular ecology resources, 15 (2), 317-328

https://doi.org/10.1111/1755-0998.12313

Harmoinen, J., von Thaden, A., Aspi, J., Kvist, L., Cocchiararo, B., Jarausch, A., Gazzola, A., Sin, T., Lohi, H., Hytonen, M. K., Kojola, I., Vik Stronen, A., Caniglia, R., Mattucci, F., Galaverni, M., Godinho, R., Ruiz-Gonzalez, A., Randi, E., Munoz-Fuentes, V. & Nowak, C. 2021. Reliable wolf-dog hybrid detection in Europe using a reduced SNP panel developed for non-invasively collected samples. BMC Genomics, 22, 473.

https://doi.org/10.1186/s12864-021-07761-5

Hedrick, P. W., Stahler, D. R. & Dekker, D. 2014. Heterozygote advantage in a finite population : black color in wolves. Journal of heredity, 105 (4), 457-465.

https://doi.org/10.1093/jhered/esu024

Ji, H., Kim, E. H., Lee, K. K., Kang, T. Y., Lee, J. M., Shin, H. D., & Kim, L. H. 2007. Beagle dogs parentage testing by using 22 ISAG microsatellite markers. Korean Journal of Veterinary Research, 47 (4), 457-460.

Karanth, K. U., Nichols, J. D., Kumar, N. S. & Hines, J. E. 2006. Assessing tiger population dynamics using photographic capture-recapture sampling. Ecology, 87, 2925-2937.

https://doi.org/10.1890/0012-9658(2006)87[2925:ATPDUP]2.0.CO;2

Krammer, M. 2016. Le Daim européen. Biotope, Mèze, 210-211.

Kusak, J., Fabbri, E., Galov, A., Gomerčić, T., Arbanasić, H., Caniglia, R., Galaverni M., Reljic, S., Huber, D. & Randi, E. 2018. Wolf-dog hybridization in Croatia. Vet. Arh., 88, 375-395.

https://doi.org/10.24099/vet.arhiv.170314

Mattioli, L., Canu, A., Passilongo, D., Scandura, M. & Apollonio, M. 2018. Estimation of pack density in grey wolf (Canis lupus) by applying spatial explicit capture-recapture models to camera trap data supported by genetic monitoring. Frot Zool, 15, 38.

https://doi.org/10.1186/s12983-018-0281-x

Miquel, C., Bellemain, E., Poillot, C., Bessière, J., Durand, A. & Taberlet, P. 2006. Quality indexes to assess the reliability of genotypes in studies using noninvasive sampling and multiple-tube approach. Molecular Ecology Notes, 6, 985-988

https://doi.org/10.1111/j.1471-8286.2006.01413.x

Neff, M. W., Broman, K. W., Mellersh, C. S., Ray, K., Acland, G. M., Aguirre, G. D., Ziegle, J. S., Ostrander, E. A., & Rine, J. 1999. A second-generation genetic linkage map of the domestic dog, Canis familiaris. Genetics, 151 (2), 803-820.

https://doi.org/10.1093/genetics/151.2.803

OFB. 2021. Flash n°14. Flash données génétiques. https://www.loupfrance.fr/wp-content/uploads/FLASH_DONNEES_GENETIQUES_2021.pdf

ONCFS. 2016. Observations de loups noirs : des informations un peu obscures ! Bulletin du Réseau Loup n°34. https://www.loupfrance.fr/pdf/Bulletin-Reseau-Loup-2016-N34_loup.noir;fiabilite;hybridation.pdf

ONCFS. 2018. Hybridation de la population de loups en France : l'ONCFS assume les méthodes avec lesquelles il travaille. Communiqué de presse. https://www.loupfrance.fr/wp-content/uploads/Communiqué-de-presse-03-07-2018-Hybridation-de-la-population-de-loups-en-France-l'ONCFS-assume-les-méthodes-avec-lesquelles-il-travaille.pdf

ONCFS. 2019. Rapport d'expertise. https://www.loupfrance.fr/wp-content/uploads/expertise-_Genet_D0619010_def.pdf

ONCFS. 2020. Rapport d'expertise. https://www.loupfrance.fr/wp-content/uploads/Rapport-expertise-génétique-OFB-dépouille-Montmeyran-8.08.2019.pdf

Ostrander, E. A., Sprague, G. F. & Rine, J. 1993. Identification and characterization of dinucleotide repeat (CA)n markers for genetic mapping in dog. Genomics, 16, 207-213

https://doi.org/10.1006/geno.1993.1160

Peillon, A. & Carbone, G. 1993. Bienvenue aux loups. Terre Sauvage, 73, 23-43.

Pilot, M., Greco, C., VonHoldt, B. M., Randi E., Jedrzejewski, W., Sidorovich, V. E., Konopinski, M. K., Ostrander, E. A. & Wayne, R. K. 2018. Widespread, long-term admixture between grey wolves and domestic dogs across Eurasia and its implications for the conservation status of hybrids. Evolutionary applications, 11, 662-680.

https://doi.org/10.1111/eva.12595

Pilot, M., Branicki, W., Jedrzejewski, W., Goszczynski, J., Jedrzejewska, B., Dykyv, I., Shkvyrya, M. & Tsingarska, E. 2010. Phylogeographic history of the grey wolves in Europe. BMC Evolutionary Biology, 10, 104, 1-11.

https://doi.org/10.1186/1471-2148-10-104

Poulard, F., Dietrich, R., Nasi, N. & Roda, F. 2021. Suivi d'une meute de loups au Coeur de la Provenceà l'aide d'un chien de detection et de pièges photographiques: predation, utilization de l'espace, et comportement de marquage par les loups en function des saisons. Faune PACA Publication, 108, 1-27 + Annexes.

Pritchard, J. K., Stephens, M. & Donelly, P. 2000. Inference of population structure using multilocus genotype data. Genetics, 155, 945-959.

https://doi.org/10.1093/genetics/155.2.945

Randi, E., Hulva, P., Fabbri, E., Galaverni, M., Galov, A., Kusak, J., Bigi, D., Bolfıkova, B. C., Smetanova, M. & Caniglia, R. 2014. Multilocus detection of wolf x dog hybridization in italy, and guidelines for marker selection. PLoS One 9:e86409.

https://doi.org/10.1371/journal.pone.0086409

Rapport CGEDD/CGAAER. 2019. Rapport CGEDD n°012414-P, CGAAER n°18097. Le loup et les activités d'élevage: comparaison européenne dans le cadre du plan national d'action 2018/2023. https://www.vie-publique.fr/sites/default/files/rapport/pdf/271785.pdf

Reportage France 3, 2017. Reportage France 3 des publications des résultats des analyses AND de loups. https://www.youtube.com/watch?v=CRGF1L2BlIg

Roda, F. 2016. Le Cerf élaphe. In: LPO PACA, GECEM & GCP. Les mammifères de Provence-Alpes-Côte d'Azur. Biotope, Mèze, 206-207.

Roda, F., Sentilles, J., Molins, C., Duchamp, C., Hansen, É. & Jean, N., 2021. Wolf scat detection dog improves wolf genetic monitoring in new French colonized areas. Journal of Vertebrate Biology, 69 (3).

https://doi.org/10.25225/jvb.20102

Roda, F., Poulard, F., Ayache, G., Nasi, N., D'Antuoni, C., Mathieu, R. & Cheylan, G. 2022. How do seasonal changes in adult wolf defecation patterns affect scat detection probabilities. Journal of Vertebrate Biology, 71 (22043), 22043. 1-12.

https://doi.org/10.25225/jvb.22043

Roda, F. & Roda, J. M., 2024. Signs of foraging by wild boar as an indicator to monitor wild boar impact on ground nesting birds. Journal of vertebrate Biology, 73 (23103), 1-16.

https://doi.org/10.25225/jvb.23103

Sénat, 2017. Question écrite n°02075 de mme Martine Berthet (Savoie - Les Républicains). Journal Officiel du Sénat du 16/11/2017. 3558. https://www.senat.fr/questions/base/2017/qSEQ171102075.html

Valière, N., Fumagalli, L., Gielly, L., Miquel, C., Lequette, B., Poulle, M. L., Weber, J. M., Arlettaz, R. & Taberlet, P. 2003. Long-distance wolf recolonization of France and Switerland inferred from non-invasive genetic sampling over a period of 10 years. Animal conservation, 6, 83-92.

https://doi.org/10.1017/S1367943003003111

Vik Stronen, A., Aspi, J., Caniglia, R., Fabbri, E., Galaverni, M., Godinho, R., Kvist, L., Mattucci, F., Nowak, C., von Thaden, A. & Harmoinen, J. 2022. Wolf-dog admixture highlights the need for methodological standards and multidisciplinary cooperation for effective governance of wild x domestic hybrids. Biological Conservation, 266, 109467.

https://doi.org/10.1016/j.biocon.2022.109467

Vilà, C., Walker, C., Sundqvist, A.-K., Flagstad, Ø., Andersone, Z., Casulli, A., Casulli A., Valdmann H., Halverson, J. & Hellegren H. 2003. Combined use of maternal, paternal and bi-parental genetic markers for the identification of wolf-dog hybrids. Heredity, 90, 17-24.

https://doi.org/10.1038/sj.hdy.6800175

VonHoldt, B. M., Pollinger, J. P., Earl, D. A., Parker, H. G., Ostrander, E. A. & Wayne, R. K. 2013. Identification of recent hybridization between gray wolves and domesticated dogs by SNP genotyping. Mamm Genome, 24, 80-88.

https://doi.org/10.1007/s00335-012-9432-0

Published
2025-08-11
How to Cite
Roda, F., & Philibert, J.-N. (2025). First Mention of a Wolf-Pack with Black Phenotypes in Provence (Sainte-Baume, France): Genetic Investigation of a Suspected Hybridization Event. Zoodiversity, 59(5). https://doi.org/10.15407/zoo2025.05.399
Section
Fauna and Systematics