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Ringani G, Zengeya T, Pirk C, Chimimba C. Assessment of craniometric sexual dimorphism and ontogenetic variation in invasive Rattus norvegicus and R. rattus from urban and peri-urban areas of Gauteng Province, South Africa. MAMMALIA 2022. [DOI: 10.1515/mammalia-2021-0191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
We evaluated craniometric sexual dimorphism and ontogenetic (age) variation in invasive Rattus norvegicus and R. rattus from urban and peri-urban areas of Gauteng Province, South Africa, using univariate and multivariate analyses. Two-way analysis of variance (ANOVA), percent contribution of the sum of squares (%SSQs) of each source of variation, principal components analysis (PCA) and unweighted pair-group method with arithmetic averages (UPGMA) cluster analysis showed no sexual dimorphism in both species, however in both species, significant age variation between five age classes based on maxillary molar toothrow cusp eruption and wear was found and the age classes were pooled into juveniles (i.e., individuals of tooth-wear class I), sub-adults (II–III), and adults (IV–V). Few variables showed statistically significant sex-age interaction. The largest %SSQs to the total variance were due to error (i.e., residual), suggesting that apart from sex, age, and their interaction, there were other components that are responsible for the variation. Our approach may be useful for partitioning the effect of sexual dimorphism and ontogenetic variation in other studies, such as our stable isotope analysis-based trophic ecological studies of Rattus species from urban and peri-urban areas of Gauteng Province, South Africa.
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Affiliation(s)
- Gordon Ringani
- Department of Zoology and Entomology , University of Pretoria , Private Bag X20 , Hatfield 0028 , South Africa
| | - Tsungai Zengeya
- South African National Biodiversity Institute (SANBI), Kirstenbosch Research Centre , Private Bag X7 , Claremont 7735 , South Africa
- Department of Zoology and Entomology , DSI-NRF Centre of Excellence for Invasion Biology (CIB), University of Pretoria , Private Bag X20 , Hatfield 0028 , South Africa
| | - Christian Pirk
- Department of Zoology and Entomology , Mammal Research Institute (MRI), University of Pretoria , Private Bag X20 , Hatfield 0028 , South Africa
| | - Christian Chimimba
- Department of Zoology and Entomology , Mammal Research Institute (MRI), University of Pretoria , Private Bag X20 , Hatfield 0028 , South Africa
- Department of Zoology and Entomology , DSI-NRF Centre of Excellence for Invasion Biology (CIB), University of Pretoria , Private Bag X20 , Hatfield 0028 , South Africa
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Segura V, Flores D, Jayat P, Martin G. Evolutionary patterns of cranial ontogeny in Sigmodontines (Rodentia, Cricetidae). J ZOOL SYST EVOL RES 2021. [DOI: 10.1111/jzs.12530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Valentina Segura
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Buenos Aires Argentina
- Unidad Ejecutora Lillo Consejo Nacional de Investigaciones Científicas y Técnicas–Fundación Miguel Lillo San Miguel de Tucumán Argentina
| | - David Flores
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Buenos Aires Argentina
- Unidad Ejecutora Lillo Consejo Nacional de Investigaciones Científicas y Técnicas–Fundación Miguel Lillo San Miguel de Tucumán Argentina
- Instituto de Vertebrados Fundación Miguel Lillo San Miguel de Tucumán Argentina
| | - Pablo Jayat
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Buenos Aires Argentina
- Unidad Ejecutora Lillo Consejo Nacional de Investigaciones Científicas y Técnicas–Fundación Miguel Lillo San Miguel de Tucumán Argentina
| | - Gabriel Martin
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Buenos Aires Argentina
- Centro de Investigación Esquel de Montaña y Estepa Patagónica Consejo Nacional de Investigaciones Científicas y Técnicas‐Universidad Nacional de la Patagonia San Juan Bosco Esquel Argentina
- Laboratorio de Investigaciones en Evolución y Biodiversidad Facultad de Ciencias Naturales y Ciencias de la Salud Universidad Nacional de la Patagonia San Juan Bosco Esquel Argentina
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Carrizo LV, Tulli MJ, Abdala V. Functional Indices and Postnatal Ontogeny of Long Bones of the Forelimb in the Sigmodontine Rodents (Rodentia: Cricetidae). J MAMM EVOL 2020. [DOI: 10.1007/s10914-020-09512-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Carrizo LV, Tulli MJ, Abdala V. Postnatal growth of forelimb musculo-tendinous systems in sigmodontine rats (Rodentia: Cricetidae). J Mammal 2018. [DOI: 10.1093/jmammal/gyy084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Luz Valeria Carrizo
- Instituto de Biología Subtropical (IBS)-nodo Posadas, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Universidad Nacional de Misiones (UNaM), Laboratorio de Genética Evolutiva, Félix de Azara, Posadas, Argentina
| | - María José Tulli
- Unidad Ejecutora Lillo-CONICET, Instituto de Herpetología-Fundación Miguel Lillo, Miguel Lillo, Tucumán, Argentina
| | - Virginia Abdala
- Instituto de Biodiversidad Neotropical (IBN), UNT-CONICET, Cátedra de Biología General, Facultad de Ciencias Naturales, UNT, Horco Mole, Yerba Buena, Tucumán, Argentina
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Hernandez G, Garcia S, Vilela JF, de la Sancha NU. Ontogenetic variation of an omnivorous generalist rodent: the case of the montane akodont (Akodon montensis). J Mammal 2017. [DOI: 10.1093/jmammal/gyx135] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Affiliation(s)
- Gabriel Hernandez
- Department of Biological Sciences, Chicago State University, 9501 S. King Drive, Chicago, IL 60628, USA (GH, NUDLS)
- Integrative Research Center, The Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA (GH, JFV, NUDLS)
| | - Soraida Garcia
- Department of Ecological Sciences and Engineering, Purdue University, 610 Purdue Mall, West Lafayette, IN 47907, USA (SG)
| | - Júlio F Vilela
- Integrative Research Center, The Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA (GH, JFV, NUDLS)
| | - Noé U de la Sancha
- Department of Biological Sciences, Chicago State University, 9501 S. King Drive, Chicago, IL 60628, USA (GH, NUDLS)
- Integrative Research Center, The Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA (GH, JFV, NUDLS)
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Systematic Studies of the Genus Aegialomys Weksler et al., 2006 (Rodentia: Cricetidae: Sigmodontinae): Geographic Variation, Species Delimitation, and Biogeography. J MAMM EVOL 2017. [DOI: 10.1007/s10914-016-9360-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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de Almeida Chiquito E, D'Elía G, Percequillo AR. Taxonomic review of genusSooretamys Weksler, Percequillo & Voss (Rodentia: Cricetidae: Sigmodontinae): an integrative approach. Zool J Linn Soc 2014. [DOI: 10.1111/zoj.12146] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elisandra de Almeida Chiquito
- Departamento de Ciências Biológicas; Escola Superior de Agricultura ‘Luiz de Queiroz’; Universidade de São Paulo; Av. Pádua Dias, 11 Caixa Postal 9 13418-900 Piracicaba São Paulo Brazil
| | - Guillermo D'Elía
- Instituto de Ciencias Ambientales y Evolutivas; Universidad Austral de Chile; campus Isla Teja s/n Valdivia 5090000 Chile
| | - Alexandre Reis Percequillo
- Departamento de Ciências Biológicas; Escola Superior de Agricultura ‘Luiz de Queiroz’; Universidade de São Paulo; Av. Pádua Dias, 11 Caixa Postal 9 13418-900 Piracicaba São Paulo Brazil
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Brennand PGG, Langguth A, Percequillo AR. The genusHylaeamysWeksler, Percequillo, and Voss 2006 (Rodentia: Cricetidae: Sigmodontinae) in the Brazilian Atlantic Forest: geographic variation and species definition. J Mammal 2013. [DOI: 10.1644/12-mamm-a-312.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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