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You are here: Home / Associated publications / Belgian Journal of Zoology / Bibliographic References / Survival and roost-site selection in the African bat Nycteris thebaica (Chiroptera : Nycteridae) in Swaziland

Ara Monadjem (2005)

Survival and roost-site selection in the African bat Nycteris thebaica (Chiroptera : Nycteridae) in Swaziland


Survival and mortality of African bats is poorly known. A banding Study of a population of Nycteris thebaica, roosting in 15 road culverts in north-eastern Swaziland, was initiated in 1998. Since then, a total of 799 bats have been banded including five cohorts of same-aged individuals of known age. Cohort life-tables and survivorship Curves were calculated using these data. For both males and females, survivorship was low in the first year, but increased thereafter. Approximately 15\% of females and 10\% of males banded as juveniles in 1998 and 1999 survived to three years of age. Of female bats banded as adults in July 1998 (n = 39), 23\% had survived to January 2003 (4.5 years). The corresponding value for males (n = 6) was zero. Of 28 male bats banded in 1998, only one (4\%) was recaptured after four years. Female values probably reflect true survival and mortality, whereas, dispersal and movement complicate the values for males. Female Nycteris thebaica did not randomly select roosting sites. The 15 Culverts were occupied by six discrete groups of female bats. The presence of male bats at the study site was irregular, with movements of 9 km having been recorded by one particular individual.

Nycteris thebaica; survival; roost selection; Africa
  • ISSN: 0777-6276

ISSN 2295-0451 (online version)
ISSN 0777-6279 (printed version)
impact factor 2015: 0,87.

Prof. Dr. Isa Schön
Royal Belgian Institute of Natural Sciences
Vautierstraat 29
1000 Brussels, Belgium


Annales de la Société malacologique de Belgique
​Annales de la Société royale malacologique et zoologique de Belgique
Annales de la Société Royale Zoologique de Belgique
Belgian Journal of Zoology