The Sicilian (<i>Crocidura sicula</i>) and the Canary (<i>C. canariensis</i>) shrew (Mammalia, Soricidae): Peripheral isolate formation and geographic variation

Sarà, Maurizio

doi:10.1080/11250009509356066

Cited by 11 publications

(7 citation statements)

References 19 publications

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“…are dated to the last glacial cycle and to the Late Glacial, respectively, show that faunas dispersed more frequently: in fact, the mammalian assemblages of Sicily turn very similar to those of Southern Italy, though less diversified (Bonfiglio et al, 1997(Bonfiglio et al, , 2001Masini et al, 2002b). Many taxa disappear (large predators, elephant, fallow deer, The only taxon that shows a certain degree of endemism is C. sicula (Sara`, 1995). The dispersal to Sicily of the savii ground vole, which has a fossorial habit, and of horses, which prefer open landscapes, suggests that a fully exposed connection (a temporary land bridge generated by eustatic low-stand) formed perhaps recurrently during the last glaciation.…”

Section: Late Miocene-pleistocene Populations Of Sicilian Insular Commentioning

confidence: 99%

Origination and extinction patterns of mammals in three central Western Mediterranean islands from the Late Miocene to Quaternary

Masini¹,

Petruso²,

Bonfiglio

et al. 2008

Quaternary International

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An overview of the population histories of three insular realms (Gargano palaeo-archipelago, Sardinia-Maritime Tuscany palaeobioprovince and the Sicilian insular complex) during the Late Miocene and Quaternary are here presented. The complexity of biodiversity changes in the islands is analysed to propose an interpretation of origination and extinction patterns. The study highlighted several important aspects of insular faunas. Evolutionary radiations were found to contribute significantly only to the Gargano faunal diversity, likely because the area was an archipelago at the time.Another interesting result is that large and small mammals do not disperse and become extinct all at the same time on each island. In fact, because of their distinct body sizes, large and small mammals have different dispersal ability and therefore different chances to cross-filtering barriers. But distinct body sizes means also different influence on diversity, resistance to environmental changes and likelihood of extinction. Another important point is that large mammalian carnivores at the top of the trophic net are quite more fragile and susceptible to become extinct than other predators.The study finally shows the clear influence that the intense Middle and Late Pleistocene climate-driven environmental changes had on island communities. The reconstruction of the faunal histories of Sardinia and Sicily shows that without exchanges with the mainland the island system represents a rather stable refuge area not too affected by the changes in the ''physical'' parameters of the environment. In contrast, if the island is frequently connected with the continent, insular faunal assemblages tend to behave as their mainland counterparts. r

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Section: Late Miocene-pleistocene Populations Of Sicilian Insular Commentioning

confidence: 99%

Origination and extinction patterns of mammals in three central Western Mediterranean islands from the Late Miocene to Quaternary

Masini¹,

Petruso²,

Bonfiglio

et al. 2008

Quaternary International

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“…Since dormice are susceptible to passive transport on natural rafts and since their phylogeny is uncertain, it is still not clear if their forerunners reached Sicily from Africa or from Italy. The shrew Crocidura esuae is considered by Kotsakis [38], Esu et al [39], and Sarà [40] to be the ancestor of Crocidura sicula, a species present in the fossil record since Late Pleistocene (San Teodoro FC) and still living in Sicily, while it is considered to be the descendant of a newcomer that arrived in the Late Pleistocene, according to Masini et al [4]. The debate is still open, but genetic and morphological data indicate marked differences among Crocidura sicula and species from the Italian peninsula and, alternatively, strong affinities with living afro-tropical forms [41,42].…”

Section: Spinagallo Faunal Complex (Formerly Elephas Falconeri Fc)mentioning

confidence: 99%

Evolution of Endemic Species, Ecological Interactions and Geographical Changes in an Insular Environment: A Case Study of Quaternary Mammals of Sicily (Italy, EU)

Marra

2013

Geosciences

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The Quaternary mammals of Sicily are well known, and five faunal complexes have been distinguished on the basis of bioevents (extinctions and new arrivals) and evolution of endemic species. It is clear that the composition of mammal faunas is strictly related to the dispersal ability of each species and to the paleogeography of the area. Until now, researches have chiefly attributed paleogeographical changes as controlling these dispersals: the sea strait between the island and the Italian peninsula has had different widths and depths over time, operating different kinds of filters on the spreading of terrestrial mammals. Moreover, Sicily and its nearby mainland underwent changes in paleogeography. Some incongruence in bioevents has been attributed to the filter operated by the marine strait, which could have acted in differential ways on large and small mammals. However, the roles of ecological interactions among vertebrate species and their control on bioevents have been greatly underestimated. In this critical review, changes in mammals’ associations are reconsidered not only in terms of biochronology and dispersal ability of taxa through the marine strait, evolution of endemic features, in addition to the paleogeography of the island, but also considering the ecological role of each species and the interactions among the species with each faunal complex

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“…Consequently, genetic investigations have often revealed systematic inconsistencies, as well as many cryptic species (Vogel, Cosson & Lopez Jurado, 2003;Dubey et al, 2006Dubey et al, , 2007aYannic et al, 2012;Jacquet et al, 2013;Stanley et al, 2013). For example, in the genus Crocidura, the shrews from Sicily (Crocidura sicula) and Canary Islands (Crocidura canariensis) were considered as conspecific by Sarà (1995Sarà ( , 1996 as a result of the identity of their karyotype (Hutterer, Lopez-Jurado & Vogel, 1987;Vogel, 1988), whereas molecular dating revealed that these two taxa split 5 Mya [cytochrome b gene (Cytb) genetic distance: 14%; Vogel et al, 2003;Dubey et al, 2008a]. In addition, local adaptations may also lead to important morphological differences within a single species, as in the African Crocidura olivieri (with local morphs varying from 20 to 120 g and fur coloration from beige to black), leading to the description of invalid (sub-)species (see genetic study of Dubey et al, 2007b).…”

Section: Introductionmentioning

confidence: 99%

Genetic identity of the critically endangered Wimmer's shrewCrocidura wimmeri

Vogel

Fumagalli

et al. 2013

Biol J Linn Soc Lond

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Coastal primary rainforests have suffered damage in Côte d'Ivoire as a result of a lack of protection and urban pressures. Consequently, the highly endemic and critically endangered Wimmer's shrew, Crocidura wimmeri, known only from its type locality, Adiopodoumé, near Abidjan, was considered to have been extinct since 1976. Shrew species assignment is often problematic because of strong phenotypic similarities among many species. The phylogenetic position of C. wimmeri within the African Crocidura species should thus be clarified. In light of its recent rediscovery in the nearby small Banco National Park (34 km 2 ), we investigated the genetic identity of seven specimens of C. wimmeri, based on 1020 bp of the mitochondrial DNA cytochrome b gene compared to other species sampled in the same region and published sequences from GenBank. Crocidura wimmeri formed a well-defined clade, the closest-related species being Crocidura sp., with a distance of 9.3%, a yet unknown species from Taï and Ziama forests. These results thus confirmed the validity of this species. This genetic characterization not only contributes to our knowledge of the evolution of West African shrews, but also may help in the discovery of additional populations of this critically endangered species.

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The Sicilian (Crocidura sicula) and the Canary (C. canariensis) shrew (Mammalia, Soricidae): Peripheral isolate formation and geographic variation

Cited by 11 publications

References 19 publications

Origination and extinction patterns of mammals in three central Western Mediterranean islands from the Late Miocene to Quaternary

Origination and extinction patterns of mammals in three central Western Mediterranean islands from the Late Miocene to Quaternary

Evolution of Endemic Species, Ecological Interactions and Geographical Changes in an Insular Environment: A Case Study of Quaternary Mammals of Sicily (Italy, EU)

Genetic identity of the critically endangered Wimmer's shrewCrocidura wimmeri

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