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Ito T, Kimura R, Wakamori H, Tanaka M, Tezuka A, Nagano AJ, Hamada Y, Kawamoto Y. Hybridization and its impact on the ontogenetic allometry of skulls in macaques. Evolution 2024; 78:284-299. [PMID: 37952211 DOI: 10.1093/evolut/qpad206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 10/25/2023] [Accepted: 11/09/2023] [Indexed: 11/14/2023]
Abstract
The role of hybridization in morphological diversification is a fundamental topic in evolutionary biology. However, despite the accumulated knowledge on adult hybrid variation, how hybridization affects ontogenetic allometry is less well understood. Here, we investigated the effects of hybridization on postnatal ontogenetic allometry in the skulls of a putative hybrid population of introduced Taiwanese macaques (Macaca cyclopis) and native Japanese macaques (Macaca fuscata). Genomic analyses indicated that the population consisted of individuals with varying degrees of admixture, formed by male migration from Japanese to Taiwanese macaques. For overall skull shape, ontogenetic trajectories were shifted by hybridization in a nearly additive manner, with moderate transgressive variation observed throughout development. In contrast, for the maxillary sinus (hollow space in the face), hybrids grew as fast as Taiwanese macaques, diverging from Japanese macaques, which showed slow growth. Consequently, adult hybrids showed a mosaic pattern, that is, the maxillary sinus is as large as that of Taiwanese macaques, while the overall skull shape is intermediate. Our findings suggest that the transgressive variation can be caused by prenatal shape modification and nonadditive inheritance on regional growth rates, highlighting the complex genetic and ontogenetic bases underlying hybridization-induced morphological diversification.
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Affiliation(s)
- Tsuyoshi Ito
- The Kyoto University Museum, Kyoto University, Sakyo, Kyoto, Japan
- Department of Evolution and Phylogeny, Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
| | - Ryosuke Kimura
- Department of Human Biology and Anatomy, Graduate School of Medicine, University of the Ryukyus, Nishihara, Okinawa, Japan
| | - Hikaru Wakamori
- Department of Evolution and Phylogeny, Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
| | - Mikiko Tanaka
- Department of Evolution and Phylogeny, Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
| | - Ayumi Tezuka
- Department of Life Sciences, Faculty of Agriculture, Ryukoku University, Otsu, Shiga, Japan
| | - Atsushi J Nagano
- Department of Life Sciences, Faculty of Agriculture, Ryukoku University, Otsu, Shiga, Japan
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
| | - Yuzuru Hamada
- Department of Evolution and Phylogeny, Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
| | - Yoshi Kawamoto
- School of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan
- Center for Human Evolution Modeling Research, Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
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Barash A, Preiss-Bloom S, Machluf Y, Fabbri E, Malkinson D, Velli E, Mucci N, Barash A, Caniglia R, Dayan T, Dekel Y. Possible origins and implications of atypical morphologies and domestication-like traits in wild golden jackals (Canis aureus). Sci Rep 2023; 13:7388. [PMID: 37149712 PMCID: PMC10164184 DOI: 10.1038/s41598-023-34533-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 05/03/2023] [Indexed: 05/08/2023] Open
Abstract
Deciphering the origins of phenotypic variations in natural animal populations is a challenging topic for evolutionary and conservation biologists. Atypical morphologies in mammals are usually attributed to interspecific hybridisation or de-novo mutations. Here we report the case of four golden jackals (Canis aureus), that were observed during a camera-trapping wildlife survey in Northern Israel, displaying anomalous morphological traits, such as white patches, an upturned tail, and long thick fur which resemble features of domesticated mammals. Another individual was culled under permit and was genetically and morphologically examined. Paternal and nuclear genetic profiles, as well as geometric morphometric data, identified this individual as a golden jackal rather than a recent dog/wolf-jackal hybrid. Its maternal haplotype suggested past introgression of African wolf (Canis lupaster) mitochondrial DNA, as previously documented in other jackals from Israel. When viewed in the context of the jackal as an overabundant species in Israel, the rural nature of the surveyed area, the abundance of anthropogenic waste, and molecular and morphological findings, the possibility of an individual presenting incipient stages of domestication should also be considered.
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Affiliation(s)
- Ayelet Barash
- School of Zoology and The Steinhardt Museum of Natural History, Tel Aviv University, Tel Aviv, Israel
- Unit of Agrigenomics, Shamir Research Institute, University of Haifa, 1290000, Kazerin, Israel
| | - Shlomo Preiss-Bloom
- School of Zoology and The Steinhardt Museum of Natural History, Tel Aviv University, Tel Aviv, Israel
| | - Yossy Machluf
- Unit of Agrigenomics, Shamir Research Institute, University of Haifa, 1290000, Kazerin, Israel
| | - Elena Fabbri
- Unit for Conservation Genetics (BIO‑CGE), Italian Institute for Environmental Protection and Research (ISPRA), Via Cà Fornacetta 9, Ozzano dell'Emilia, 40064, Bologna, Italy
| | - Dan Malkinson
- Department of Geography and Environmental Studies, University of Haifa, 3498838, Haifa, Israel
| | - Edoardo Velli
- Unit for Conservation Genetics (BIO‑CGE), Italian Institute for Environmental Protection and Research (ISPRA), Via Cà Fornacetta 9, Ozzano dell'Emilia, 40064, Bologna, Italy
| | - Nadia Mucci
- Unit for Conservation Genetics (BIO‑CGE), Italian Institute for Environmental Protection and Research (ISPRA), Via Cà Fornacetta 9, Ozzano dell'Emilia, 40064, Bologna, Italy
| | - Alon Barash
- The Azrieli Faculty of Medicine, Bar Ilan University, 8 Henrietta Szold St, Safed, Israel
| | - Romolo Caniglia
- Unit for Conservation Genetics (BIO‑CGE), Italian Institute for Environmental Protection and Research (ISPRA), Via Cà Fornacetta 9, Ozzano dell'Emilia, 40064, Bologna, Italy.
| | - Tamar Dayan
- School of Zoology and The Steinhardt Museum of Natural History, Tel Aviv University, Tel Aviv, Israel.
| | - Yaron Dekel
- Unit of Agrigenomics, Shamir Research Institute, University of Haifa, 1290000, Kazerin, Israel.
- The Cheryl Spencer Department of Nursing and The Cheryl Spencer Institute of Nursing Research, University of Haifa, 3498838, Haifa, Israel.
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Cooper EB, Brent LJN, Snyder-Mackler N, Singh M, Sengupta A, Khatiwada S, Malaivijitnond S, Qi Hai Z, Higham JP. The natural history of model organisms: the rhesus macaque as a success story of the Anthropocene. eLife 2022; 11:78169. [PMID: 35801697 PMCID: PMC9345599 DOI: 10.7554/elife.78169] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 07/07/2022] [Indexed: 11/25/2022] Open
Abstract
Of all the non-human primate species studied by researchers, the rhesus macaque (Macaca mulatta) is likely the most widely used across biological disciplines. Rhesus macaques have thrived during the Anthropocene and now have the largest natural range of any non-human primate. They are highly social, exhibit marked genetic diversity, and display remarkable niche flexibility (which allows them to live in a range of habitats and survive on a variety of diets). These characteristics mean that rhesus macaques are well-suited for understanding the links between sociality, health and fitness, and also for investigating intra-specific variation, adaptation and other topics in evolutionary ecology.
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Affiliation(s)
- Eve B Cooper
- Department of Anthropology, New York University, New York, United States
| | | | | | - Mewa Singh
- Biopsychology Laboratory, University of Mysore, Mysuru, India
| | | | - Sunil Khatiwada
- Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, Garbatka, Poland
| | | | - Zhou Qi Hai
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Guilin, China
| | - James P Higham
- Department of Anthropology, New York University, New York, United States
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Majtyka T, Borczyk B, Ogielska M, Stöck M. Morphometry of two cryptic tree frog species at their hybrid zone reveals neither intermediate nor transgressive morphotypes. Ecol Evol 2022; 12:e8527. [PMID: 35127036 PMCID: PMC8794711 DOI: 10.1002/ece3.8527] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 12/17/2021] [Indexed: 11/20/2022] Open
Abstract
Under incomplete reproductive isolation, secondary contact of diverged allopatric lineages may lead to the formation of hybrid zones that allow to study recombinants over several generations as excellent systems of genomic interactions resulting from the evolutionary forces acting on certain genes and phenotypes. Hybrid phenotypes may either exhibit intermediacy or, alternatively, transgressive traits, which exceed the extremes of their parents due to epistasis and segregation of complementary alleles. While transgressive morphotypes have been examined in fish, reptiles, birds, and mammals, studies in amphibians are rare. Here, we associate microsatellite-based genotypes with morphometrics-based morphotypes of two tree frog species of the Hyla arborea group, sampled across a hybrid zone in Poland, to understand whether the genetically differentiated parental species also differ in morphology between each other and their hybrids and whether secondary contact leads to the evolution of intermediate or transgressive morphotypes. Using univariate approaches, explorative multivariate methods (principal component analyses) as well as techniques with prior grouping (discriminant function analyses), we find that morphotypes of both parental species and hybrids differ from each other. Importantly, hybrid morphotypes are neither intermediate nor transgressive but found to be more similar to H. orientalis than to H. arborea.
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Affiliation(s)
- Tomasz Majtyka
- Department of Evolutionary Biology and Conservation of VertebratesUniversity of WrocławWrocławPoland
| | - Bartosz Borczyk
- Department of Evolutionary Biology and Conservation of VertebratesUniversity of WrocławWrocławPoland
| | - Maria Ogielska
- Department of Evolutionary Biology and Conservation of VertebratesUniversity of WrocławWrocławPoland
| | - Matthias Stöck
- Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB)BerlinGermany
- Amphibian Research CenterHiroshima UniversityHigashi‐HiroshimaJapan
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Zdjelar N, Nagendran L, Kendall C, Ackermann RR, Schroeder L. The hybrid skull of the eastern coyote (Canis latrans var.): Nonmetric traits and craniomandibular shape. J Morphol 2021; 282:1745-1764. [PMID: 34609013 DOI: 10.1002/jmor.21417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 09/14/2021] [Accepted: 10/05/2021] [Indexed: 12/24/2022]
Abstract
The increasing awareness that hybridization, and resultant gene flow, plays a major role in animal diversification has led to a growing number of studies that have focused on assessing the morphological consequences of this process. Analyses of mammalian hybrids have identified skeletal effects of hybridization, including a suite of anomalous dental and sutural traits on the skull that are present at high frequencies in hybrid populations. These studies have also detected consistent patterns of morphological shape and size differences between hybrids and parental taxa across a wide variety of organisms. However, more research is required to understand the universality of these traits and shape/size differences. Building on these previous studies, a sample of genetically determined canid hybrids was examined, specifically the eastern coyote (Canis latrans var.), a hybrid between coyotes, wolves, and dogs, to test whether this group exhibits a comparable pattern of anomalous nonmetric characters, and to assess differences in craniomandibular shape and size. First, specimens of C. latrans var., C. latrans, and C. lupus were scored for anomalous traits, including supernumerary and rotated teeth, dental crowding, and sutural anomalies. Geometric morphometric analyses were then conducted on a subset of these individuals to explore craniomandibular size and shape variation, as well as allometry. The results are largely consistent with other studies, indicating that the incidence of dental anomalies, dental crowding, and sutural anomalies is significantly higher in hybrids. However, differences are not significant for supernumerary teeth. The exploration of morphometric variation identifies intermediate morphology in the hybrids, and some indication of greater morphological variability in the mandible. When these results are combined with previous studies, they suggest that skeletal signatures of hybridization are common to different mammalian taxa across multiple generations; however, some traits such as supernumerary teeth may be lost after a few generations.
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Affiliation(s)
- Natasa Zdjelar
- Department of Anthropology, University of Toronto, Toronto, Ontario, Canada
| | - Lavania Nagendran
- Department of Anthropology, University of Toronto, Toronto, Ontario, Canada
| | | | - Rebecca Rogers Ackermann
- Human Evolution Research Institute, University of Cape Town, Rondebosch, South Africa.,Department of Archaeology, University of Cape Town, Rondebosch, South Africa
| | - Lauren Schroeder
- Human Evolution Research Institute, University of Cape Town, Rondebosch, South Africa.,Department of Anthropology, University of Toronto Mississauga, Mississauga, Ontario, Canada.,Department of Natural History, Royal Ontario Museum, Toronto, Ontario, Canada
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Buck LT, Katz DC, Ackermann RR, Hlusko LJ, Kanthaswamy S, Weaver TD. Effects of hybridization on pelvic morphology: A macaque model. J Hum Evol 2021; 159:103049. [PMID: 34455262 DOI: 10.1016/j.jhevol.2021.103049] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 06/24/2021] [Accepted: 06/25/2021] [Indexed: 11/28/2022]
Abstract
Ancient DNA analyses have shown that interbreeding between hominin taxa occurred multiple times. Although admixture is often reflected in skeletal phenotype, the relationship between the two remains poorly understood, hampering interpretation of the hominin fossil record. Direct study of this relationship is often impossible due to the paucity of hominin fossils and difficulties retrieving ancient genetic material. Here, we use a sample of known ancestry hybrids between two closely related nonhuman primate taxa (Indian and Chinese Macaca mulatta) to investigate the effect of admixture on skeletal morphology. We focus on pelvic shape, which has potential fitness implications in hybrids, as mismatches between maternal pelvic and fetal cranial morphology are often fatal to mother and offspring. As the pelvis is also one of the skeletal regions that differs most between Homo sapiens and Neanderthals, investigating the pelvic consequences of interbreeding could be informative regarding the viability of their hybrids. We find that the effect of admixture in M. mulatta is small and proportional to the relatively small morphological difference between the parent taxa. Sexual dimorphism appears to be the main determinant of pelvic shape in M. mulatta. The lack of difference in pelvic shape between Chinese and Indian M. mulatta is in contrast to that between Neanderthals and H. sapiens, despite a similar split time (in generations) between the hybridizing pairs. Greater phenotypic divergence between hominins may relate to adaptations to disparate environments but may also highlight how the unique degree of cultural buffering in hominins allowed for greater neutral divergence. In contrast to some previous work identifying extreme morphologies in first- and second-generation hybrids, here the relationship between pelvic shape and admixture is linear. This linearity may be because most sampled animals have a multigenerational admixture history or because of relatively high constraints on the pelvis compared with other skeletal regions.
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Affiliation(s)
- Laura T Buck
- School of Biological and Environmental Sciences, Liverpool John Moores University, UK; Department of Anthropology, University of California Davis, USA.
| | - David C Katz
- Department of Anthropology, University of California Davis, USA; University of Calgary, Cumming School of Medicine, Canada
| | - Rebecca Rogers Ackermann
- Department of Archaeology, University of Cape Town, South Africa; Human Evolution Research Institute, University of Cape Town, South Africa
| | - Leslea J Hlusko
- Department of Integrative Biology, University of California Berkeley, USA; Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), Burgos, Spain
| | - Sree Kanthaswamy
- School of Natural and Mathematical Sciences, Arizona State University, USA
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