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Acta Theriologica

, Volume 49, Issue 2, pp 215–234 | Cite as

Community ecology of the terrestrial small mammals of Zakouma National Park, Chad

  • Laurent Granjon
  • Céline Houssin
  • Emilie Lecompte
  • Maho Angaya
  • Jean  César
  • Raphaël Cornette
  • Gauthier Dobigny
  • Christiane Denys
Article

Abstract

The terrestrial small mammal community of the Zakouma National Park (Chad) was assessed by live trapping in various habitats during the dry season. Nearly 3000 trap-nights yielded 505 captures of nine rodent and two shrew species, making up a representative small mammal community for the Sudanian savanna biotic zone. Murine rodents of the genusMastomys dominated, withM. erythroleucus andM. cf.kollmannspergeri occuring at similar abundances. The former was widespread and especially abundant in habitats with high tree cover. The latter was more localized, predominantly in annually flooded habitats characterized by a clay-rich soil, often withAcacia seyal as the main vegetation. Population structure differed between the two species, suggesting distinct reproductive strategies possibly linked with habitat preferences: theM. erythroleucus population comprised mainly young, immature individuals, whereasM. cf.kollmannspergeri was represented by older individuals, a significant fraction of which had already reproduced.Taterillus congicus andTatera kempi (gerbilline rodents), together withLemniscomys zebra, were mainly found in more open habitats with sand-rich soils.Arvicanthis niloticus, Acomys cf.johannis, Mus mattheyi andXerus erythropus were the other rodents captured, whereas shrews were represented byCrocidura fulvastra andSuncus sp.

Key words

tomys murid rodents habitat preferences species coexistence Sudanian savannas 

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Copyright information

© Mammal Research Institute, Bialowieza, Poland 2004

Authors and Affiliations

  • Laurent Granjon
    • 1
    • 2
  • Céline Houssin
    • 1
  • Emilie Lecompte
    • 1
  • Maho Angaya
    • 3
  • Jean  César
    • 3
  • Raphaël Cornette
    • 1
  • Gauthier Dobigny
    • 1
    • 4
  • Christiane Denys
    • 1
  1. 1.FRE 2695 “Origine, Structure et Evolution de la Biodiversité”, Dept “Systématique et Evolution”Museum National d’Histoire NaturelleParisFrance
  2. 2.Laboratoire de Mammalogie (CBGP, UR 022)IRDBamakoMali
  3. 3.Laboratoire de Recherche Vétérinaire et Zootechnique de FarchaN’DjaménaTchad
  4. 4.Laboratoire de ZoologieIRDNiameyNiger

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