A study of gross morphological and histological syringeal features of true francolins (Galliformes: Francolinus, Scleroptila, Peliperdix and Dendroperdixspp.) and spurfowls (Pternistis spp.) in a phylogenetic context

  • Tshifhiwa G Mandiwana-Neudani
  • Cecilia Kopuchian
  • Graham Louw
  • Timothy M Crowe

Abstract

Modern taxonomies of francolins recognise 41 congeneric species, forming the largest genus of terrestrial gamebirds (Galliformes). Recent molecular, ecological and behavioural studies challenge this view, suggesting that they comprise two unrelated, monophyletic groups. There are ‘true’ francolins (Francolinus, Dendroperdix, Peliperdix and Scleroptila spp.) that are relatively small, ground-roosting birds, and spurfowls (Pternistis spp.) that are large birds that can roost in trees. This study explores gross morphological and histological syringeal anatomy of francolins, spurfowls and sister taxa to test whether differences are concordant with a molecular-based hypothesis. Differences found were the presence of a shieldversus diamond-shaped tympanum among francolins and spurfowls respectively. The first bronchial half rings are mineralised among francolins except in Dendroperdix sephaena, whereas almost no mineral deposition was observed among spurfowls. Histologically, francolins have a small, rounded pessulus (except in D. sephaena, which has a rounded, larger pessulus) contrary to the larger pessulus observed among spurfowls, which is rounded and triangular in Pternistis capensis and P. natalensis. Both gross and histological similarities within, and differences between, francolin and spurfowl syringes support this division. However, D. sephaena shows intermediate features between francolins and spurfowls.

OSTRICH 2011, 82(2): 115–127

Author Biographies

Tshifhiwa G Mandiwana-Neudani
Department of Botany, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa; DST/NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, Private Bag X3, Rondebosch 7701, South Africa
Cecilia Kopuchian
División Ornitología, Museo Argentino de Ciencias Naturales “B. Rivadavia” Av. Ángel Gallardo 470 (C1405DJR), Buenos Aires, Argentina
Graham Louw
Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Anzio Rd, Observatory 7925, South Africa
Timothy M Crowe
DST/NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, Private Bag X3, Rondebosch 7701, South Africa
Section
Articles

Journal Identifiers


eISSN: 1727-947X
print ISSN: 0030-6525