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İbiş O, Koepfli KP, Özcan S, Tez C. Whole mitogenomes of Turkish white-toothed shrews, genus Crocidura (Eulipotyphla: Soricidae), with new insights into the phylogenetic positions of Crocidura leucodon and the Crocidura suaveolens group. ORG DIVERS EVOL 2022. [DOI: 10.1007/s13127-022-00579-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Román J, Calzada J, Godoy JA, Biedma L. Clarifying the taxonomic status of Crocidura cantabra Cabrera, 1908 (Eulipotyphla: Soricidae: Crocidurinae). MAMMALIA 2022. [DOI: 10.1515/mammalia-2022-0039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
At the beginning of the 20th century Crocidura cantabra was described based on one specimen from Basque Provinces, North of Spain. Later, some authors considered it a junior synonym of Crocidura suaveolens, without any data to support this statement, so the eight existing specimens were registered as records of that species. Our objective was to clarify the taxonomic status of C. cantabra. Since DNA could not be obtained from the existing specimens and the coloration was originally poorly described, an attempt was made to make an assignment based on the original biometric data of two individuals, the only ones identified by Cabrera for which there is biometric information: the holotype and a specimen from Colindres, Cantabria. The body measurements were surely altered by conservation techniques, rendering any identification uncertain, whereas the skull biometry assigns the specimens to C. russula. We propose that C. cantabra should be treated as junior synonym of Crocidura russula.
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Affiliation(s)
- Jacinto Román
- Department of Conservation Biology , Estación Biológica de Doñana , CSIC, C. Americo Vespucio 26, 41092 Sevilla , Spain
| | - Javier Calzada
- Department of Integrated Sciences , Faculty of Experimental Sciences, University of Huelva , Avenida de las Fuerzas Armadas, S/N, 21007 Huelva , Spain
| | - José Antonio Godoy
- Department of Integrative Ecology , Estación Biológica de Doñana , CSIC, C. Americo Vespucio 26, 41092 Sevilla , Spain
| | - Luis Biedma
- Department of Integrated Sciences , Faculty of Experimental Sciences, University of Huelva , Avenida de las Fuerzas Armadas, S/N, 21007 Huelva , Spain
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Dissimilar use of an external heat source for thermoregulation by shrews from different geographic regions. J Therm Biol 2022; 104:103193. [DOI: 10.1016/j.jtherbio.2022.103193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 01/19/2022] [Accepted: 01/21/2022] [Indexed: 11/18/2022]
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Román J, Siverio F, Schuster C, Rivilla JC, Yuste C, Biedma LE, Calzada J. Using a blind test to assess the discriminant power of morphological traits to distinguish between similar shrew species. MAMMALIA 2020. [DOI: 10.1515/mammalia-2020-0043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The Canary Islands are home to a large variety of endemic fauna. The Canary shrew (Crocidura canariensis) has a distribution restricted to Fuerteventura, Lanzarote and the islets of Lobos and Montaña Clara. One of the main threats to the insular fauna is the arrival of exotic species. The greater white-toothed shrew (Crocidura russula) is an easily transportable animal and a potential competitor for C. canariensis. Therefore, C. russula should be taken into account in the management protocols for invasive species. One of the most easily applicable techniques for detecting shrews is the analysis of pellets. This study aims to assess which morphological characters are diagnostic and easy to use when identifying both species of shrews. For this purpose, a blind specific assignment has been made using seven previously described characters and another three added in the present study. The results show that the observer’s experience did not improve the correct identification rate and that only three of the evaluated characters have a high discriminant capacity. Finally, it was found that the combined use of the maximum number of characters and the identification by two independent observers reduces the probability of making a mistake in the determination to minimum values.
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Affiliation(s)
- Jacinto Román
- Department of Conservation Biology , Doñana Biological Station, CSIC , C. Américo Vespucio 26 , 41092 Sevilla , Spain
| | - Felipe Siverio
- Canary Islands’ Ornithology and Natural History Group (GOHNIC) , La Malecita s/n, 38480-Buenavista del Norte , Tenerife , Canary Islands , Spain
| | | | - Juan Carlos Rivilla
- Department of Conservation Biology , Doñana Biological Station, CSIC , C. Américo Vespucio 26 , 41092 Sevilla , Spain
| | - Carmen Yuste
- Department of Integrated Sciences , Faculty of Experimental Sciences, University of Huelva , Avenida de las Fuerzas Armadas , S/N, 21007 Huelva , Spain
| | - Luis Eduardo Biedma
- Department of Integrated Sciences , Faculty of Experimental Sciences, University of Huelva , Avenida de las Fuerzas Armadas , S/N, 21007 Huelva , Spain
| | - Javier Calzada
- Department of Integrated Sciences , Faculty of Experimental Sciences, University of Huelva , Avenida de las Fuerzas Armadas , S/N, 21007 Huelva , Spain
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Chromosomal Differentiation in Genetically Isolated Populations of the Marsh-Specialist Crocidura suaveolens (Mammalia: Soricidae). Genes (Basel) 2020; 11:genes11030270. [PMID: 32131436 PMCID: PMC7140822 DOI: 10.3390/genes11030270] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/26/2020] [Accepted: 02/27/2020] [Indexed: 12/12/2022] Open
Abstract
The genus Crocidura represents a remarkable model for the study of chromosome evolution. This is the case of the lesser white-toothed shrew (Crocidura suaveolens), a representative of the Palearctic group. Although continuously distributed from Siberia to Central Europe, C. suaveolens is a rare, habitat-specialist species in the southwesternmost limit of its distributional range, in the Gulf of Cádiz (Iberian Peninsula). In this area, C. suaveolens is restricted to genetically isolated populations associated to the tidal marches of five rivers (Guadiana, Piedras, Odiel, Tinto and Guadalquivir). This particular distributional range provides a unique opportunity to investigate whether genetic differentiation and habitat specialization was accompanied by chromosomal variation. In this context, the main objective of this study was to determinate the chromosomal characteristics of the habitat-specialist C. suaveolens in Southwestern Iberia, as a way to understand the evolutionary history of this species in the Iberian Peninsula. A total of 41 individuals from six different populations across the Gulf of Cádiz were collected and cytogenetically characterized. We detected four different karyotypes, with diploid numbers (2n) ranging from 2n = 40 to 2n = 43. Two of them (2n = 41 and 2n = 43) were characterized by the presence of B-chromosomes. The analysis of karyotype distribution across lineages and populations revealed an association between mtDNA population divergence and chromosomal differentiation. C. suaveolens populations in the Gulf of Cádiz provide a rare example of true karyotypic polymorphism potentially associated to genetic isolation and habitat specialization in which to investigate the evolutionary significance of chromosomal variation in mammals and their contribution to phenotypic and ecological divergence.
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Biedma L, Calzada J, Godoy JA, Román J. Local habitat specialization as an evolutionary response to interspecific competition between two sympatric shrews. J Mammal 2019. [DOI: 10.1093/jmammal/gyz203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Interspecific competition affects population dynamics, distributional ranges, and evolution of competing species. The competitive exclusion principle states that ecologically similar species cannot coexist unless they exhibit niche segregation. Herein, we assess whether niche segregation allows the coexistence of Crocidura russula and C. suaveolens in southwestern Iberia and whether segregation is the result of current (ecological effect) or past (evolutionary effect) competition. We performed an annual live-trapping cycle in the two main habitats of the Odiel Marshes Natural Reserve (OMNR), the tidal marsh and the Mediterranean forest, both in syntopic (i.e., where both species co-occur) and allotopic (where only one of the two species occurs) sites within this Reserve. We modeled the presence–absence of each species in both habitats and sites by generalized linear mixed models. The coexistence of both species was favored by spatial and temporal niche segregation. Crocidura suaveolens was restricted to tidal marsh and did not occupy Mediterranean forest, even when C. russula was absent. We interpret this to be the result of competition in the past triggering an evolutionary response in C. suaveolens towards its specialization in tidal marsh. Moreover, the specialist C. suaveolens currently is outcompeting C. russula in tidal marshes, reversing the dominance pattern observed elsewhere. The degree of co-occurrence between both species in syntopic sites was low, as they showed inverse dynamics of seasonal abundances. Interspecific competition leading to habitat specialization favors the coexistence of these ecologically similar species.
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Affiliation(s)
- Luis Biedma
- Department of Integrated Sciences, Faculty of Experimental Sciences, University of Huelva, Huelva, Spain
| | - Javier Calzada
- Department of Integrated Sciences, Faculty of Experimental Sciences, University of Huelva, Huelva, Spain
| | - José A Godoy
- Department of Integrative Ecology, Doñana Biological Station, CSIC, Sevilla, Spain
| | - Jacinto Román
- Department of Conservation Biology, Doñana Biological Station, CSIC, Sevilla, Spain
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Balmori-de la Puente A, Nores C, Román J, Fernández-González A, Aymerich P, Gosálbez J, Escoda L, Castresana J. Size increase without genetic divergence in the Eurasian water shrew Neomys fodiens. Sci Rep 2019; 9:17375. [PMID: 31758027 PMCID: PMC6874603 DOI: 10.1038/s41598-019-53891-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 11/06/2019] [Indexed: 11/18/2022] Open
Abstract
When a population shows a marked morphological change, it is important to know whether that population is genetically distinct; if it is not, the novel trait could correspond to an adaptation that might be of great ecological interest. Here, we studied a subspecies of water shrew, Neomys fodiens niethammeri, which is found in a narrow strip of the northern Iberian Peninsula. This subspecies presents an abrupt increase in skull size when compared to the rest of the Eurasian population, which has led to the suggestion that it is actually a different species. Skulls obtained from owl pellets collected over the last 50 years allowed us to perform a morphometric analysis in addition to an extensive multilocus analysis based on short intron fragments successfully amplified from these degraded samples. Interestingly, no genetic divergence was detected using either mitochondrial or nuclear data. Additionally, an allele frequency analysis revealed no significant genetic differentiation. The absence of genetic divergence and differentiation revealed here indicate that the large form of N. fodiens does not correspond to a different species and instead represents an extreme case of size increase, of possible adaptive value, which deserves further investigation.
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Affiliation(s)
- Alfonso Balmori-de la Puente
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37, 08003, Barcelona, Spain
| | - Carlos Nores
- Indurot, Universidad de Oviedo, Campus de Mieres, 33600, Mieres, Asturias, Spain
| | - Jacinto Román
- Department of Conservation Biology, Doñana Biological Station, CSIC, Calle Americo Vespucio 26, 41092, Sevilla, Spain
| | | | | | - Joaquim Gosálbez
- Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, Avinguda Diagonal 645, 08028, Barcelona, Spain
| | - Lídia Escoda
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37, 08003, Barcelona, Spain
| | - Jose Castresana
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37, 08003, Barcelona, Spain.
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Biedma L, Román J, Godoy JA, Calzada J. Using owl pellets to infer habitat associations and clarify the regional distribution of a cryptic shrew. J Zool (1987) 2019. [DOI: 10.1111/jzo.12660] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- L. Biedma
- Department of Integrated Sciences Faculty of Experimental Sciences University of Huelva Huelva Spain
| | - J. Román
- Department of Conservation Biology Doñana Biological Station CSIC Sevilla Spain
| | - J. A. Godoy
- Department of Integrative Ecology Doñana Biological Station CSIC Sevilla Spain
| | - J. Calzada
- Department of Integrated Sciences Faculty of Experimental Sciences University of Huelva Huelva Spain
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Biedma L, Calzada J, Román J, Godoy JA. Rare and rear: population genetics of marsh-specialist Crocidura suaveolenspopulations in the Gulf of Cádiz. J Mammal 2019. [DOI: 10.1093/jmammal/gyy172] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Luis Biedma
- Department of Integrated Sciences, Faculty of Experimental Sciences, University of Huelva, Avenida de las Fuerzas Armadas, Huelva, Spain
| | - Javier Calzada
- Department of Integrated Sciences, Faculty of Experimental Sciences, University of Huelva, Avenida de las Fuerzas Armadas, Huelva, Spain
| | - Jacinto Román
- Department of Conservation Biology, Doñana Biological Station, Sevilla, Spain
| | - José A Godoy
- Department of Integrative Ecology, Doñana Biological Station, Sevilla, Spain
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Rey C, Noguerales V, García-Navas V. Ecological and phenotypic divergence in Iberian shrews (Soricidae). J ZOOL SYST EVOL RES 2019. [DOI: 10.1111/jzs.12270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Claudia Rey
- Máster Universitario en Biodiversidad y Biología de la Conservación; Universidad Pablo de Olavide; Seville Spain
| | - Víctor Noguerales
- Grupo de Biodiversidad Genética y Cultural; Instituto de Investigación en Recursos Cinegéticos (IREC CSIC-UCLM-JCCM); Ciudad Real Spain
- Department of Biological Sciences; University of Cyprus; Nicosia Cyprus
| | - Vicente García-Navas
- Department of Integrative Ecology; Estación Biológica de Doñana (EBD CSIC); Seville Spain
- Laboratoire d'Ecologie Alpine (LECA); Université Grenoble Alpes; Grenoble France
- Department of Evolutionary Biology and Environmental Studies; University of Zurich; Zürich Switzerland
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