NDLI: Molecular data in conjunction with morphology help resolve the Hemidactylus brookii complex (Squamata: Gekkonidae)

Content Provider	Springer Nature Link
Author	Lajmi, Aparna Giri, Varad B. Karanth, K. Praveen
Copyright Year	2016
Abstract	Molecular data are increasingly being used to resolve cryptic species complexes; however, subsequent formal species description and taxonomic revisions often remain incomplete. Given that most species are described based on morphology-based alpha taxonomy, one cannot resolve nomenclatural issues of species complexes without the aid of morphology. In this study, we examined the taxonomic status of a long-known human commensal and species complex, Hemidactylus brookii. To this end, samples of H. cf. brookii and related species were collected across India. We analyzed molecular as well as morphological data to resolve the taxonomy of this species complex. Seven deeply divergent, well-supported clades were recovered using the mitochondrial phylogeny, five of which were also retrieved in the nuclear tree. One of these consists of five morphologically distinct species of ground-dwelling Hemidactylus. The genetic distances across each clade of putative species of H. brookii sensu lato were comparable to that between morphologically distinct species of ground-dwelling Hemidactylus. Meristic characters such as number of precloacal-femoral pores, number of non-pore bearing scales interrupting the series of pored scales, dorsal pholidosis, and presence/absence of divided lamellae can be used to distinguish these putative species from each other. However, morphological characters of H. brookii sensu stricto did not correspond to any of the putative species studied. The study also revealed that the “H. brookii complex” in India includes two commensal species, Hemidactylus parvimaculatus and Hemidactylus murrayi. Furthermore, these two lineages have independently acquired adaptations that could have assisted them in exploiting human habitat. An identification key to diagnose species within this complex and rest of the Hemidactylus in India is proposed.
Starting Page	659
Ending Page	677
Page Count	19
File Format	PDF
ISSN	14396092
Journal	Organisms Diversity & Evolution
Volume Number	16
Issue Number	3
e-ISSN	16181077
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-03-07
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cytochrome b RAG1 Cryptic species Invasive species Phylogeny Biodiversity Evolutionary Biology Developmental Biology Animal Systematics/Taxonomy/Biogeography Plant Systematics/Taxonomy/Biogeography
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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