Abstract
The process of caudal regeneration in lizards does not always occur perfectly, which can cause some abnormalities, such as the appearance of warped or supernumerary tails. Here we report the first cases of tail bifurcation in the Dwarf Gecko, Lygodactylus klugei, and observations about the caudal adhesive pads in individuals with bifurcated tails. Our observations represent a new case of caudal bifurcation for lizard species that have tails with functional specializations and elaborate morphological structures and are the first records of this type of anomaly for the genus Lygodactylus.
Highlights
Lizards have the noteworthy ability to regenerate their broken tails, which involves repairing several damaged tissues, including muscular, osteological, and neuronal (ALIBARDI, 2010)
Incomplete autotomy or tail injuries can stimulate the regeneration of additional tails (DUDEK; EKNER-GRZYB, 2014; KOLENDA et al, 2017; RAMADANOVIC; ZIMIC, 2019) and have been reported in different lizard families, for example, Dactyloidae (e.g., TIPANTIZA-TUGUMINAGO et al, 2019), Gekkonidae (e.g., GARCÍA-VINALAY, 2017), Iguanidae (e.g., ARIANO-SÁNCHEZ; GILESCOBEDO, 2016), Lacertidae (e.g., KOLENDA et al, 2017), Phyllodactylidae (e.g., FILADELFO et al, 2017), Scincidae (e.g., MAGALHÃES et al, 2015), Teiidae (e.g., SALES; FREIRE, 2019), Tropiduridae (e.g., BRASILEIRO, 2021), Sphaerodactylidae (e.g., MOUADI et al, 2021) and others
We report the first cases of tail bifurcation in Lygodactylus klugei, which were recorded in two areas of the Caatinga domain in northeastern Brazil
Summary
Lizards have the noteworthy ability to regenerate their broken tails, which involves repairing several damaged tissues, including muscular, osteological, and neuronal (ALIBARDI, 2010). Incomplete autotomy or tail injuries can stimulate the regeneration of additional tails (DUDEK; EKNER-GRZYB, 2014; KOLENDA et al, 2017; RAMADANOVIC; ZIMIC, 2019) and have been reported in different lizard families, for example, Dactyloidae (e.g., TIPANTIZA-TUGUMINAGO et al, 2019), Gekkonidae (e.g., GARCÍA-VINALAY, 2017), Iguanidae (e.g., ARIANO-SÁNCHEZ; GILESCOBEDO, 2016), Lacertidae (e.g., KOLENDA et al, 2017), Phyllodactylidae (e.g., FILADELFO et al, 2017), Scincidae (e.g., MAGALHÃES et al, 2015), Teiidae (e.g., SALES; FREIRE, 2019), Tropiduridae (e.g., BRASILEIRO, 2021), Sphaerodactylidae (e.g., MOUADI et al, 2021) and others (see review in HENLE; GRIMM-SEYFARTH, 2020).
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