Phylogenetics of the southern African dwarf chameleons, Bradypodion (Squamata: Chamaeleonidae)

Tolley, Krystal A.; Tilbury, Colin R.; Branch, William R.; Matthee, Conrad A.

doi:10.1016/s1055-7903(03)00211-2

Cited by 61 publications

(83 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bradypodion pumilum and B. occidentale live in areas near Cape Town that differ significantly in their climatic and habitat characteristics, as mentioned above (Tolley et al, 2004 Running speed was tested on a 1m long padded surface that prevented chameleons from slipping. Animals were stimulated to run maximally by tapping on the padded surface right behind them or by clapping.…”

Section: Materials and Methods Animalsmentioning

confidence: 99%

Impacts of temperature on performance in two species of South African dwarf chameleons,Bradypodion pumilumandB. occidentale

Segall

Tolley

Vanhooydonck

et al. 2013

Journal of Experimental Biology

Self Cite

View full text Add to dashboard Cite

SUMMARYTemperature is an extrinsic factor that influences reptile behavior because of its impact on reptile physiology. Understanding the impact of temperature on performance traits is important as it may affect the ecology and fitness of ectothermic animals such as reptiles. Here, we examined the temperature dependence of performance in two species of South African dwarf chameleon (Bradypodion): one adapted to a semi-arid environment and one to a mesic environment. Ecologically relevant performance traits were tested at different temperatures to evaluate their thermal dependence, and temperature-performance breadths for 80% and 90% of each performance trait were calculated. Our results show distinct differences in the thermal dependence of speed-versus force-related performance traits. Moreover, our results show that the semi-arid species is better adapted to higher temperatures and as such has a better chance of coping with the predicted increases in environmental temperature. The mesic area-adapted species seems to be more sensitive to an increase in temperature and could therefore potentially be threatened by the predicted future climate change. However, further studies investigating the potential for acclimation in chameleons are needed to better understand how animals may respond to future climate change.

show abstract

Section: Materials and Methods Animalsmentioning

confidence: 99%

Impacts of temperature on performance in two species of South African dwarf chameleons,Bradypodion pumilumandB. occidentale

Segall

Tolley

Vanhooydonck

et al. 2013

Journal of Experimental Biology

Self Cite

View full text Add to dashboard Cite

show abstract

“…Fifteen species are currently recognized, although based on recent phylogenetic work (Tolley et al 2004(Tolley et al , 2006, several others are in the process of being described (C. Tilbury, K. A. Tolley, W. R. Branch, personal communication).…”

Section: Study Systemmentioning

confidence: 99%

“…Dwarf chameleons occur in a wide range of habitats, including montane and lowland rainforest, grasslands, montane and lowland Mediterranean heath and shrubby thicket (Branch 1998). I collected data for 21 populations (Table 1), which include all currently described species except B. karooicum, which is a local variant of B. ventrale (Tolley et al 2004). In addition to described species, the 21 populations include three divergent lineages (B. sp.…”

Section: Study Systemmentioning

confidence: 99%

See 1 more Smart Citation

A test of Rensch’s rule in dwarf chameleons (Bradypodion spp.), a group with female-biased sexual size dimorphism

Stuart‐Fox

2008

Evol Ecol

View full text Add to dashboard Cite

Rensch's rule describes a pattern of allometry in sexual size dimorphism (SSD): when males are the larger sex (male-biased SSD), SSD increases with increasing body size, and when females are the larger sex (female-biased SSD), SSD decreases with increasing body size. While this expectation generally holds for taxa with male-biased or mixed SSD, examples of allometry for SSD consistent with Rensch's rule in groups with primarily female-biased SSD are remarkably rare. Here, I show that the majority of dwarf chameleons (Bradypodion spp.) have female-biased SSD. In accordance with Rensch's rule, the group exhibits an allometric slope of log(female size) on log(male size) less than one, although statistical significance is dependent on the phylogenetic comparative method used. In this system, this pattern is likely due to natural selection on both male and female body size, combined with fecundity selection on female body size. In addition to quantifying SSD and testing Rensch's rule in dwarf chameleons, I discuss reasons why Rensch's rule may only rarely apply to taxa with female-biased SSD.

show abstract

“…Their referral was thus a tentative placement of a plesiomorphic group of taxa. Subsequently, a variety of lines of evidence (Hofman et al, 1991;Bauer, 1993;Townsend & Larson, 2002;Tolley et al, 2004) have suggested that East African taxa assigned to this genus are more closely related to some taxa currently assigned to Chamaeleo sensu lato than to Southern African Bradypodion, or at least that they are not part of the same monophyletic group as the Southern African forms. We follow Klaver & Bö hme (1997) in continuing to refer these problematic East African species to Bradypodion, however, we here use the convention of quotation marks (" ") in order to clearly indicate that this is an allocation of convenience pending a more complete phylogenetic analysis and the identification of diagnostic synapomorphies.…”

Section: Introductionmentioning

confidence: 99%

An annotated catalogue of the types of chameleons (Reptilia: Squamata: Chamaeleonidae) in the collection of the Museum für Naturkunde der Humboldt-Universität zu Berlin (ZMB)

2006

View full text Add to dashboard Cite

An annotated catalogue is provided of the type specimens of the chameleons in the herpetological collections of the Museum fü r Naturkunde der Humboldt-Universitä t zu Berlin, Institut fü r Systematische Zoologie, formerly Zoologisches Museum Berlin (ZMB). The collection includes 107 type specimens, representing 40 named taxa (26 of which are currently regarded as valid at the specific or subspecific level). Most of the primary types represent species occurring in the former German African colonial territories of Tanganyika (now Tanzania) and Cameroon, although material from other parts of the African mainland is also represented.

show abstract

Phylogenetics of the southern African dwarf chameleons, Bradypodion (Squamata: Chamaeleonidae)

Cited by 61 publications

References 16 publications

Impacts of temperature on performance in two species of South African dwarf chameleons,Bradypodion pumilumandB. occidentale

Impacts of temperature on performance in two species of South African dwarf chameleons,Bradypodion pumilumandB. occidentale

A test of Rensch’s rule in dwarf chameleons (Bradypodion spp.), a group with female-biased sexual size dimorphism

An annotated catalogue of the types of chameleons (Reptilia: Squamata: Chamaeleonidae) in the collection of the Museum für Naturkunde der Humboldt-Universität zu Berlin (ZMB)

Contact Info

Product

Resources

About