Molecular taxonomy of Crocidura species (Eulipotyphla: Soricidae) in a key biogeographical region for African shrews, Nigeria

Igbokwe, Joseph; Nicolas, Violaine; Oyeyiola, Akinlabi; Obadare, Adeoba; Adesina, Adetunji Samuel; Awodiran, Michael Olufemi; Houtte, Natalie Van; Fichet‐Calvet, Elisabeth; Verheyen, Erik; Olayemi, Ayodeji

doi:10.1016/j.crvi.2019.03.004

Cited by 11 publications

(6 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The most speciose genus of mammal is the shrew genus Crocidura (Family Soricidae, Order Eulipotyphla), of which an unknown number (though more than 100) of species occur in Africa, many of which are not identifiable morphologically and are little known ecologically, because they are difficult even to census. But they are important secondary consumers and prey species of TSE; some are also known reservoirs for hantavirus and other zoonotic disease, and one is critically endangered (Igbokwe et al, 2019). As much as additional study of the effects of endogenous disturbances on murid rodents of TSE is needed, the need for similar studies of these cryptic shrews-of which almost no ecological studies exist-is even greater.…”

Section: Conservation Implications and Future Research Needsmentioning

confidence: 99%

Tropical savanna small mammals respond to loss of cover following disturbance: A global review of field studies

Bergstrom

Scruggs²,

Vieira³

2023

Front. Ecol. Evol.

View full text Add to dashboard Cite

Small-mammal faunas of tropical savannas consist of endemic assemblages of murid rodents, small marsupials, and insectivores on four continents. Small mammals in tropical savannas are understudied compared to other tropical habitats and other taxonomic groups (e.g., Afrotropical megafauna or Neotropical rainforest mammals). Their importance as prey, ecosystem engineers, disease reservoirs, and declining members of endemic biodiversity in tropical savannas compels us to understand the factors that regulate their abundance and diversity. We reviewed field studies published in the last 35 years that examined, mostly experimentally, the effects of varying three primary endogenous disturbances in tropical savanna ecosystems—fire, large mammalian herbivory (LMH), and drought—on abundance and diversity of non-volant small mammals. These disturbances are most likely to affect habitat structure (cover or concealment), food availability, or both, for ground-dwelling small mammalian herbivores, omnivores, and insectivores. Of 63 studies (included in 55 published papers) meeting these criteria from the Afrotropics, Neotropics, and northern Australia (none was found from southern Asia), 29 studies concluded that small mammals responded (mostly negatively) to a loss of cover (mostly from LMH and fire); four found evidence of increased predation on small mammals in lower-cover treatments (e.g., grazed or burned). Eighteen studies concluded a combination of food- and cover-limitation explained small-mammal responses to endogenous disturbances. Only two studies concluded small-mammal declines in response to habitat-altering disturbance were caused by food limitation and not related to cover reduction. Evidence to date indicates that abundance and richness of small savanna mammals, in general (with important exceptions), is enhanced by vegetative cover (especially tall grass, but sometimes shrub cover) as refugia for these prey species amid a “landscape of fear,” particularly for diurnal, non-cursorial, and non-fossorial species. These species have been called “decreasers” in response to cover reduction, whereas a minority of small-mammal species have been shown to be “increasers” or disturbance-tolerant. Complex relationships between endogenous disturbances and small-mammal food resources are important secondary factors, but only six studies manipulated or measured food resources simultaneous to habitat manipulations. While more such studies are needed, designing effective ones for cryptic consumer communities of omnivorous dietary opportunists is a significant challenge.

show abstract

Section: Conservation Implications and Future Research Needsmentioning

confidence: 99%

Tropical savanna small mammals respond to loss of cover following disturbance: A global review of field studies

Bergstrom

Scruggs²,

Vieira³

2023

Front. Ecol. Evol.

View full text Add to dashboard Cite

show abstract

“…These Two species of shrew, Crocidura lamottei and C. crossei, represent new records for Guinea-Bissau (Reiner & Simões, 1998). According to Igbokwe et al (2019), C. crossei is found in rainforest, rainforestsavannah mosaic and Guinea savannah in Guinea, Sierra Leone and western Cameroon. In Nigeria, it was only found in rainforest.…”

Section: Ta B L Ementioning

confidence: 99%

Results of a small terrestrial mammal survey in the remote Boé region of Guinea‐Bissau, with discovery of two new shrew records for the country

Westra¹,

Mol²,

Desjardins

et al. 2022

Afr J Ecol

View full text Add to dashboard Cite

show abstract

“…The Niger is the third largest river in Africa and it likely originated approximately 29-34 million years ago (Chardon et al, 2016;Reijers, 2011), reaching its full extent by the mid-Miocene as continental uplift progressed (Reijers, 2011). It is a biogeographic barrier for several species of frogs (Onadeko & Rödel, 2009;Rödel et al, 2014), primates (Eriksson et al, 2004), and shrews (Igbokwe et al, 2019).…”

Section: Divergence Time Estimatesmentioning

confidence: 99%

Rivers, not refugia, drove diversification in arboreal, sub‐Saharan African snakes

Allen

Greenbaum

Hime

et al. 2021

Ecology and Evolution

View full text Add to dashboard Cite

show abstract

Molecular taxonomy of Crocidura species (Eulipotyphla: Soricidae) in a key biogeographical region for African shrews, Nigeria

Cited by 11 publications

References 27 publications

Tropical savanna small mammals respond to loss of cover following disturbance: A global review of field studies

Tropical savanna small mammals respond to loss of cover following disturbance: A global review of field studies

Results of a small terrestrial mammal survey in the remote Boé region of Guinea‐Bissau, with discovery of two new shrew records for the country

Rivers, not refugia, drove diversification in arboreal, sub‐Saharan African snakes

Contact Info

Product

Resources

About