Startseite Dental formula variations in wild and domestic Sus scrofa: is the first premolar agenesis an evolutionary trend?
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Dental formula variations in wild and domestic Sus scrofa: is the first premolar agenesis an evolutionary trend?

  • Concepción Azorit EMAIL logo , Antonia Oya , Leandro S. L. Hohl , Rafael Carrasco , Oscar Rocha-Barbosa und Adrià Casinos
Veröffentlicht/Copyright: 24. Januar 2022
Mammalia
Aus der Zeitschrift Mammalia Band 86 Heft 3

Abstract

We investigated the occurrence of congenital dental abnormalities in 94 wild boars Sus scrofa scrofa, and 20 Iberian pigs Sus scrofa domesticus from Doñana (DNP) and Sierra de Andújar Natural Park (ANP) southern Spain. The only dental variation found was agenesis of the lower first premolar, either deciduous (Dp1) or permanent (P1). We analyzed prevalence variations using: odds ratios, Fisher’s exact test and logistic-regression models. The lower first premolar has often been reported to be absent in modern domestic breeds of pigs, but it is usually reported as present in wild boar. However, we found a similar occurrence of agenesis in wild boar as in Iberian pigs. A common genotypic background between wild boar and Iberian pig populations of ANP sharing the same ecosystems may explain this result. When considering only wild boar, unexpected differences between populations were detected. The wild boar from ANP showed higher estimated probabilities of agenesis than those from DNP. Environmental conditions can also represent influencing factors for changes within subspecies. Our findings reinforce the idea that in suids the congenital absence of premolars probably has an evolutionary relevance, which could represent a generalized trend towards the reduction of the dental formula from the plesiomorphic placental dentition.

Keywords: congenital tooth hypodontia; domestication; Iberian pig; Mediterranean ecosystems; wild boar
Corresponding author: Concepción Azorit, Department of Animal and Vegetal Biology and Ecology, Faculty of Experimental Sciences, University of Jaén, Jaén, Spain, E-mail:

Funding source: European Regional Development Fund

Funding source: Consejería de Ciencia e Innovación, Junta de Andalucía P07-RNM-03087

Funding source: MINECO of Spain CGL2016-78577-P

Funding source: PPGEE Post-Doctoral Program FAPERJ PDR-10 256946

Funding source: L.S.L. Hohl: FAPERJ Programa Pós-Doutorado Nota 10 (name of de organ).

Award Identifier / Grant number: E-26/201.899/2020

Acknowledgments

We thank the hunters, taxidermists, and local wildlife management authorities of Sierra de Andújar Natural Park in Sierra Morena Range and Doñana Natural and National Park for their assistance in the collection of specimens, as well as the owners of the Iberian pig farms for supplying the material of domestic pigs.

  1. Author contributions: CA: conceptualization of the study, methodology, specimens study, hypotheses, discussing results, writing, editing graphic design, and corresponding author. AO: data curation, statistical analyses, hypotheses, discussing results. LH: specimens study, preliminary study, methodology. RC: specimens study, preliminary study, material acquisition. OR: specimens study, preliminary study, funding acquisition. AC: conceptualization of the study, methodology, hypotheses, discussing results and writing. All authors drafted the manuscript and revised it for final approval. All authors agreed to participate in this study and share co-authorship. All authors agreed with the content and gave their explicit consent to submit it for publication.

  2. Research funding: This study was supported by the European Regional Development Fund (FEDER), projects P07-RNM-03087 (Consejería de Ciencia e Innovación, Junta de Andalucía) and Project CGL2016-78577-P (from the MINECO of Spain) and PID2019-111185GB-100, as well as the Prociência Fellowship Program/UERJ, CAPES and CNPq, O. Rocha-Barbosa, (Brazil) and the Programa de Intercâmbio e Mobilidade Acadêmica (PIMA)/Organización de Estados Iberoamericanos (OEI), PPGEE Post-Doctoral Program, FAPERJ PDR-10 256946, FAPERJ Programa Pós-Doutorado Nota 10 (name of de organ), E-26/201.899/2020 (grant number) (L.S.L. Hohl).

  3. Conflict of interest statement: The authors declare that they have no conflicts of interest regarding this article.

  4. Data availability: The datasets and specimens of the current study, stored at the University of Jaén, may be available upon reasonable request to the corresponding author and head of the Research Group PAI-RNM-175 and Vertebrate Laboratory.

  5. Research ethics: The jaws of both wild and domestic animals were obtained from slaughterhouses and rooms equipped for the treatment of domestic and game animals, as well as official taxidermy rooms. Wild boars were hunted in accordance with local regulated hunting plans. In addition, the researchers of the research project have official accreditation in ethics and good animal experimentation practices (BOE 34/8/2-RD 53/2013).

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Received: 2021-01-02
Accepted: 2021-11-10
Published Online: 2022-01-24
Published in Print: 2022-05-25

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  16. Vocalizations of the Sepia short-tailed Opossum Monodelphis adusta (Thomas, 1897, Didelphimorphia: Didelphidae)
  17. Evolutionary Biology
  18. Sexual size dimorphism and geographic variation in forearm length of Rafinesque’s Big-eared Bat (Corynorhinus rafinesquii) and Southeastern Myotis (Myotis austroriparius)
  19. Dental formula variations in wild and domestic Sus scrofa: is the first premolar agenesis an evolutionary trend?
  20. Taxonomy/Phylogeny
  21. Morphological and molecular confirmation of the common pipistrelle bat, Pipistrellus pipistrellus Schreber, 1774 (Vespertilionidae: Chiroptera), in Xinjiang, China
  22. Discovery of Kerivoula kachinensis and a validity of K. titania (Chiroptera: Vespertilionidae) in China
https://doi.org/10.1515/mammalia-2021-0001
Schlagwörter für diesen Artikel
congenital tooth hypodontia; domestication; Iberian pig; Mediterranean ecosystems; wild boar

Artikel in diesem Heft

  1. Frontmatter
  2. Ecology
  3. Factors influencing the success of capturing European brown bears with foot snares
  4. First tracking of an eastern spotted skunk litter from birth to independence
  5. A snapshot of rodents and shrews of agroecosystems in Ethiopian highlands using camera traps
  6. First photographic record of albinism in Baiomys taylori (Rodentia: Cricetidae)
  7. First record for a partial Isabelline colouration in a European mole, Talpa europaea, from Central Italy
  8. The natural history of the Stenodermatinae Chiroderma doriae vizottoi Taddei and Lim 2010 (Chiroptera, Phyllostomidae) in a semiarid region from Brazil
  9. Free-ranging Van Gelder’s bat Bauerus dubiaquercus (Chiroptera: Vespertilionidae) preying on dung beetles in southern Mexico
  10. First report of albinism in a lactating female of the chestnut long-tongued bat Lionycteris spurrelli Thomas, 1913 (Chiroptera, Phyllostomidae)
  11. Fruits consumed by phyllostomid bats in a Peruvian Yungas forest: new dietary items for Chiroderma salvini and Lonchophylla handleyi
  12. Conservation
  13. Distribution of introduced American mink in the Northern Apennine area (Central Italy)
  14. A re-discovery of Coelops frithii (Chiroptera, Hipposideridae) from its type locality after one and a half century
  15. Ethology
  16. Vocalizations of the Sepia short-tailed Opossum Monodelphis adusta (Thomas, 1897, Didelphimorphia: Didelphidae)
  17. Evolutionary Biology
  18. Sexual size dimorphism and geographic variation in forearm length of Rafinesque’s Big-eared Bat (Corynorhinus rafinesquii) and Southeastern Myotis (Myotis austroriparius)
  19. Dental formula variations in wild and domestic Sus scrofa: is the first premolar agenesis an evolutionary trend?
  20. Taxonomy/Phylogeny
  21. Morphological and molecular confirmation of the common pipistrelle bat, Pipistrellus pipistrellus Schreber, 1774 (Vespertilionidae: Chiroptera), in Xinjiang, China
  22. Discovery of Kerivoula kachinensis and a validity of K. titania (Chiroptera: Vespertilionidae) in China
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Heruntergeladen am 28.10.2025 von https://www.degruyterbrill.com/document/doi/10.1515/mammalia-2021-0001/pdf
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