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Ferreira D, San‐Jose LM, Roulin A, Gaigher A, Fumagalli L. Limited associations between MHC diversity and reproductive success in a bird species with biparental care. Ecol Evol 2024; 14:e10950. [PMID: 38384825 PMCID: PMC10879840 DOI: 10.1002/ece3.10950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 12/13/2023] [Indexed: 02/23/2024] Open
Abstract
The selective pressure from pathogens on individuals can have direct consequences on reproduction. Genes from the major histocompatibility complex (MHC) are central to the vertebrate adaptive immune system and pathogen resistance. In species with biparental care, each sex has distinct reproductive roles and levels of investment, and due to a trade-off with immunity, one can expect different selective regimes acting upon the MHC of each parent. Here, we addressed whether couples combine each other's variation at MHC loci to increase their breeding success. Specifically, we used a 23-year dataset from a barn owl population (Tyto alba) to understand how MHC class Iα and IIβ functional divergence and supertypes of each parent were associated with clutch size and fledging success. We did not detect associations between MHC diversity and supertypes with the clutch size or with the fledging success. In addition, to understand the relative contribution from the MHC of the genetic parents and the social parents, we analyzed the fledging success using only a cross-fostered dataset. We found several associations of weak-to-moderate effect sizes between the father's MHC and fledging success: (i) lower MHC-Iα divergence in the genetic father increases fledging success, which might improve paternal care during incubation, and (ii) one and two MHC-IIβ DAB2 supertypes in the social father decrease and increase, respectively, fledging success, which may affect the paternal care after hatching. Furthermore, fledging success increased when both parents did not carry MHC-IIβ DAB1 supertype 2, which could suggest conditional effects of this supertype. Although our study relied on a substantial dataset, we showed that the associations between MHC diversity and reproductive success remain scarce and of complex interpretation in the barn owl. Moreover, our results highlighted the need to incorporate more than one proxy of reproductive success and several MHC classes to capture more complex associations.
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Affiliation(s)
- Diana Ferreira
- Laboratory for Conservation Biology, Department of Ecology and Evolution, BiophoreUniversity of LausanneLausanneSwitzerland
| | - Luis M. San‐Jose
- Laboratoire Évolution and Diversité Biologique, UMR 5174, CNRSUniversité Toulouse III Paul Sabatier, IRDToulouseFrance
| | - Alexandre Roulin
- Department of Ecology and Evolution, BiophoreUniversity of LausanneLausanneSwitzerland
| | - Arnaud Gaigher
- CIBIO‐InBIO, Research Center in Biodiversity and Genetic ResourcesUniversity of PortoVairãoPortugal
- Research Unit for Evolutionary Immunogenomics, Department of BiologyUniversity of HamburgHamburgGermany
| | - Luca Fumagalli
- Laboratory for Conservation Biology, Department of Ecology and Evolution, BiophoreUniversity of LausanneLausanneSwitzerland
- Swiss Human Institute of Forensic Taphonomy, University Centre of Legal Medicine Lausanne‐GenevaLausanne University Hospital and University of LausanneLausanneSwitzerland
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Sawada A, Iwasaki T, Akatani K, Takagi M. Mate choice for body size leads to size assortative mating in the Ryukyu Scops Owl Otus elegans. Ecol Evol 2022; 12:e9578. [PMCID: PMC9745103 DOI: 10.1002/ece3.9578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 11/16/2022] [Accepted: 11/18/2022] [Indexed: 12/15/2022] Open
Abstract
Understanding evolutionary phenomena that involve size assortative mating requires elucidating the generating mechanisms on which assortment is based. Although various mechanisms have been suggested, their relative importance may differ across taxonomic groups. Males selecting for large, fecund females combined with the dominance of large males in the competition for females has been suggested as a major mechanism in specific groups. However, raptors do not appear to conform to this, because the selection for smallness among males (assumed in a theory of reversed sexual size dimorphism) and the selection for largeness among males (assumed in the theory of size assortative mating) are in opposite directions. We studied the assortative mating during a long‐term study of the Ryukyu Scops Owls Otus elegans interpositus. Significant assortative mating was found for culmen length (from the base to the tip of the bill) and wing length (from the bend of the wing to the tip of the longest primary). Statistical control of the spatial and temporal accessibility of potential mates did not affect the assortment. Males with short wings had slightly higher fitness components than those with long wings, and females settling early tended to have small wings. Considering that early‐settling females can preferentially choose their mates, these results suggest that smaller females have an advantage when choosing smaller males with good reproductive performance. Improved flying and hunting ability of smaller individuals may be the background of choosing smaller individuals. We propose that, not passive process like similarity between individuals and their potential mates, but active mate choice for small individuals is an explanation for the assortative mating in this owl.
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Affiliation(s)
- Akira Sawada
- Biodiversity DivisionNational Institute for Environmental StudiesTsukubaJapan
| | - Tetsuya Iwasaki
- Department of Biology and Geosciences, Graduate School of ScienceOsaka City UniversityOsakaJapan
| | - Kana Akatani
- Department of Biology and Geosciences, Graduate School of ScienceOsaka City UniversityOsakaJapan
| | - Masaoki Takagi
- Department of Natural History Science, Graduate School of ScienceHokkaido UniversitySapporoJapan
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Nomano FY, Matsui S, Senda M, Tsuchiya Y, Takagi M. Random mating and the lack of sex-biased kin clustering in an island population of the bull-headed shrike, Lanius bucephalus. ETHOL ECOL EVOL 2022. [DOI: 10.1080/03949370.2022.2069159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Fumiaki Y. Nomano
- Graduate School of Environmental Earth Science, Hokkaido University, Kita 10, Nishi 5, Kita-ku, Sapporo 060-0810, Japan
- Department of Evolutionary Studies of Biosystems, School of Advanced Sciences, Sokendai, The Graduate University for Advanced Studies, Hayama, Miura, Kanagawa 240-0193, Japan
| | - Shin Matsui
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
- Department of Biology, School of Biological Sciences, Tokai University, Minamisawa 5-1-1-1, Minami-ku Hokkaido, Sapporo 005-8601, Japan
| | - Mariko Senda
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
- Yamashina Institute for Ornithology, Konoyama 115, Abiko, Chiba 270-1145, Japan
| | - Yuko Tsuchiya
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Masaoki Takagi
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
- Department of Natural History Science, Graduate School of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan
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Naito‐Liederbach AM, Sato Y, Nakajima N, Maeda T, Inoue T, Yamazaki T, Ogden R, Inoue‐Murayama M. Genetic diversity of the endangered Japanese golden eagle at neutral and functional loci. Ecol Res 2021. [DOI: 10.1111/1440-1703.12246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Yu Sato
- Wildlife Research Center Kyoto University Kyoto Japan
- Royal (Dick) School of Veterinary Studies and the Roslin Institute University of Edinburgh Roslin UK
| | - Nobuyoshi Nakajima
- Center for Environmental Biology and Ecosystem Studies National Institute for Environmental Studies Tsukuba Japan
| | - Taku Maeda
- Iwate Prefectural Research Institute for Environmental Sciences and Public Health Morioka Japan
| | - Takehiko Inoue
- Asian Raptor Research and Conservation Network Yasu Japan
| | - Toru Yamazaki
- Asian Raptor Research and Conservation Network Yasu Japan
| | - Rob Ogden
- Royal (Dick) School of Veterinary Studies and the Roslin Institute University of Edinburgh Roslin UK
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