Eco‐physiological arguments on the functional impact of Lepus timidus mitochondrial DNA introgression in Iberian hares (Lepus granatensis)

Author:

Cardoso Beatriz1234ORCID,Carpio Antonio J.25,Martinez‐Haro Mónica6,Beltrán‐Beck Beatriz7,Alzaga Vanesa8,Farelo Liliana13,Campos Rita9,Queirós João134,Melo‐Ferreira José134,Alves Paulo C.13410,Acevedo Pelayo2

Affiliation:

1. Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO), InBIO Laboratório Associado Universidade do Porto Vairão Portugal

2. Grupo Sanidad y Biotecnología (SaBio), Instituto de Investigación en Recursos Cinegéticos (IREC) UCLM‐CSIC‐JCCM Ciudad Real Spain

3. BIOPOLIS Program in Genomics, Biodiversity and Land Planning CIBIO Vairão Portugal

4. Departamento de Biologia Faculdade de Ciências da Universidade do Porto Porto Portugal

5. Department of Zoology University of Córdoba Córdoba Spain

6. Instituto Regional de Investigación y Desarrollo Agroalimentario y Forestal (IRIAF) CIAG del Chaparrillo Ciudad Real Spain

7. Consejo General de Colegios Veterinarios de España Madrid Spain

8. Gestión Ambiental de Navarra (GAN‐NIK) Pamplona Spain

9. CES‐UC, Centre for Social Studies University of Coimbra Coimbra Portugal

10. Estação Biológica de Mértola (EBM) CIBIO, Praça Luís de Camões Mértola Portugal

Abstract

AbstractGenetic exchanges between species provide valuable opportunities to dissect the relative importance of neutral and selective processes driving introgression events and to test their functional relevance. In the northern half of the Iberian Peninsula, the Iberian hare, Lepus granatensis, presents extensive patterns of mitochondrial DNA (mtDNA) introgression from the mountain hare, L. timidus, a species that disappeared from the region after the Last Glacial Maximum. Here, we test whether mtDNA introgression affects reproductive success and body condition of Iberian hare individuals. For that end, hares (n = 149) were sampled from populations along the mtDNA introgression gradient during the 2013–2014 and 2014–2015 hunting seasons. Reproductive performance indicators, including pregnancy status and testicular weight, were recorded, while body condition was measured as kidney fat (our response variables). Predictors included individual traits (sex and age), sampling period (month and hunting season), mtDNA introgression, occurrence or burden of different endoparasites and environmental factors. Our results showed that mtDNA introgression was negatively associated with pregnancy in females and body condition in males, while a positive association was found with body condition in females. These results suggest that carrying the mountain hare mtDNA has physiological effects in Iberian hares, but that the allospecific mtDNA type may not always be beneficial for the individual. This study shows that the patterns of mtDNA introgression seen in the Iberian hare today may result from a complex balance between deleterious and beneficial individual effects.

Funder

European Regional Development Fund

Fundação para a Ciência e a Tecnologia

Publisher

Wiley

Subject

Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics

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