Научная статья на тему 'Phylogeny, phylogeography and identification of Asian toad-headed agamas Phrynocephalus (superspecies versicolor)'

Phylogeny, phylogeography and identification of Asian toad-headed agamas Phrynocephalus (superspecies versicolor) Текст научной статьи по специальности «Биологические науки»

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Ключевые слова
PHRYNOCEPHALUS (SUPERSPECIES VERSICOLOR) / PH. HISPIDA / PH. KULAGINI / PH. PRZEWALSKII / PH. FRONTALIS / "CRYPTIC" SPECIES

Аннотация научной статьи по биологическим наукам, автор научной работы — Dunayev Evgeniy A., Poyarkov Nikolay A.

We studied 16S and COI sequences of 42 specimens from 37 populations belonging to five taxa of Phrynocephalus versicolor species complex. Most basal position in the NJand ML-trees occupies the clade comprising Ph. hispida. Within the remaining taxa, clearly separate position occupies the clade from Tuva and NW Mongolia Ph. kulagini (Ph. versicolor kulagini) this taxon is a sister clade to the group joining Ph. versicolor + (Ph. frontalis + Ph. przewalskii). Modern range of Ph. hispida occupies Dzhungarian and Transaltai Gobi in Mongolia and from the eastern part of Xinjiang to Gansu province in China. This territory is regarded as a possible area of origin of Ph. (superspecies versicolor) and Ph. (superspecies guttatus) ancestors (Dunayev, 2009). Further dispersal of versicolor-group ancestor went in two basic directions: first lineage crossed Mongolian Altai and along the Great Lakes depression reached southern Tuva (Russia), where Ph. kulagini was formed. Another lineage moved to the east and gave rise to Ph. przewalskii, Ph. frontalis and Ph. versicolor. Further differentiation of this group seems to be a subject of adaptive radiation and morphological differentiation of taxa since several substrate races were formed. Ph. przewalskii and Ph. frontalis are found in sandy areas in Ordos and Alashan deserts, whereas Ph. versicolor inhabit hammadas in Gobi desert. As a result of further dispersal of Ph. versicolor in southern Mongolia it formed narrow contact zones with two parapatrically distributed «cryptic» species (Ph. hispida and Ph. kulagini). All taxa can be distinguished from each other on the basis of colouration. Ph. frontalis and Ph. przewalskii are distinct from other species in having bright-orange (aurantiacus) underside of tail in juvenile and young specimens, and from each other they can be distinguished by size or absence/presence of dark dorsomedial stripe. Other species of Ph. (superspecies versicolor) have yellow underside of tail in juveniles. Ph. hispida and Ph. versicolor are distinguished from Ph. kulagini in presence of pink (or orange) axillary spots, and from each other in white (in Ph. hispida) or black (in Ph. versicolor) end of tail undersurface in young and juveniles. Part of molecular analysis was completed within the international program «Consortium for the Barcoding of Life (CBOL)».

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Текст научной работы на тему «Phylogeny, phylogeography and identification of Asian toad-headed agamas Phrynocephalus (superspecies versicolor)»

DeAgamis2: ВТОРОЙ МЕЖДУНАРОДНЫЙ СИМПОЗИУМ ПО АГАМОВЫМ ЯЩЕРИЦАМ

described by Lorenz Müller as Uromastyx geyri Müller, 1922, thereby becoming the first name-bearing herpetological type of ZFMK. Important acquisitions of agamids followed only 4 - 5 decades later: rich Laudakia stellio material from several Aegean islands (K.F. Buchholz); several rare and endemic Laudakia species from Afghanistan (Clas M. Naumann) and Pakistan (Khalid J. Baig); the Gottingen Museum collection with some historical agamid types; significant collections from West (Mauritania, Senegal) and East Africa (Kenya, Tanzania, Zambia) as well as from SE Asia (Thailand, Malaysia, Vietnam).

Research on agamid lizards at ZFMK was and is carried out in the course of several doctoral theses since the late 1970-ies: with the two DAAD fellows Scott M. Moody (from Ann Arbor, USA), Khalid J. Baig (from Islamabad), Thomas Wilms and Philipp Wagner, the work of the two latter being strongly supported by Andreas Schmitz (formerly also ZFMK, now Geneva). Agamid research in Bonn culminated by organizing the 1st international symposium «DeAgamis» which now finds its continuation in the present meeting «DeAgamis II» in St. Petersburg.

Key words: Squamata, Agamidae, Museum Alexander Koenig, Bonn.

PHYLOGENY, PHYLOGEOGRAPHY AND IDENTIFICATION OF ASIAN TOAD-HEADED AGAMAS PHRYNOCEPHALUS (SUPERSPECIES VERSICOLOR)

Evgeniy A. Dunayev 1, Nikolay A. Poyarkov 2

1 Zoological Museum, Moscow State University 6 B. Nikitskaya, Moscow 125009, Russia E-mail: dunayev@online.ru 2 Department of Vertebrate Zoology, Biological faculty, Moscow State University Vorobyevy Gory, GSP-1, Moscow 119991, Russia E-mail: n.poyarkov@gmail.com

We studied 16S and COI sequences of 42 specimens from 37 populations belonging to five taxa of Phrynocephalus versicolor species complex.

Most basal position in the NJ- and ML-trees occupies the clade comprising Ph. hispida. Within the remaining taxa, clearly separate position occupies the clade from Tuva and NW Mongolia - Ph. kulagini (Ph. versicolor kulagini) - this taxon is a sister clade to the group joining Ph. versicolor + (Ph. frontalis + Ph. przewalskii).

Modern range of Ph. hispida occupies Dzhungarian and Transaltai Gobi in Mongolia and from the eastern part of Xinjiang to Gansu province in China. This territory is regarded as a possible area of origin of Ph. (superspecies versicolor) and Ph. (superspecies guttatus) ancestors (Dunayev, 2009). Further dispersal of versicolor-group ancestor went in two basic directions: first lineage crossed Mongolian Altai and along the Great Lakes depression reached southern Tuva (Russia), where Ph. kulagini was formed. Another lineage moved to the east and gave rise to Ph. przewalskii, Ph. frontalis and Ph. versicolor. Further differentiation of this

group seems to be a subject of adaptive radiation and morphological differentiation of taxa since several substrate races were formed.

Ph. przewalskii and Ph. frontalis are found in sandy areas in Ordos and Alashan deserts, whereas Ph. versicolor inhabit hammadas in Gobi desert. As a result of further dispersal of Ph. versicolor in southern Mongolia it formed narrow contact zones with two parapatrically distributed «cryptic» species (Ph. hispida and Ph. kulagini).

All taxa can be distinguished from each other on the basis of colouration. Ph. frontalis and Ph. przewalskii are distinct from other species in having bright-orange (aurantiacus) underside of tail in juvenile and young specimens, and from each other they can be distinguished by size or absence/presence of dark dorsomedial stripe. Other species of Ph. (su-perspecies versicolor) have yellow underside of tail in juveniles. Ph. hispida and Ph. versicolor are distinguished from Ph. kulagini in presence of pink (or orange) axillary spots, and from each other in white (in Ph. hispida) or black (in Ph. versicolor) end of tail undersurface in young and juveniles.

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СОВРЕМЕННАЯ ГЕРПЕТОЛОГИЯ 2010 Т. 10, вып. 3/4

DeAgamis2: 2nd INTERNATIONAL SYMPOSIUM ON AGAMID LIZARDS

Part of molecular analysis was completed Key words: Phrynocephalus (superspecies

within the international program «Consortium for versicolor), Ph. hispida, Ph. kulagini, Ph. przewal-the Barcoding of Life (CBOL)». skii, Ph. frontalis, «cryptic» species.

SEXUAL DIMORPHISM IN TRAPELUS RUDERATUS RUDERATUS (SAURIA: AGAMIDAE) WITH NOTES ON THE NATURAL HISTORY

Behzad Fathinia \ Nasrullah Rastegar-Pouyani 2, Ali Bahrami 3, and Steven C. Anderson 4

1 Department of Biology, Payam-e-Noor University Ilam, Iran E-mail: bfathinia@gmail.com 2Department of Biology, Faculty of Science, Razi University 67149 Kermanshah, Iran Email: nasrullah.r@gmail.com 3 School of Veterinary, Ilam University Ilam, Iran

4 Department of Biological Sciences, University of the Pacific Stockton, CA 95211, USA

In agamid lizards, both sexual selection and natural selection influence the form of dimorphism in secondary sexual traits The genus Trapelus Cu-vier, 1816 comprises four species on the Iranian Plateau as follows: T. agilis (Olivier, 1804), T. lessonae (De Filippi, 1865), T. ruderatus (Blanford, 1881) and T. megalonyx (Gunther, 1865). The distribution of T. ruderatus (=the formerly T. persicus) in Iran is limited to southern and southwestern regions of the Iranian Plateau.

Among the Iranian species of the genus Trapelus the study of sexual dimorphism has already been carried out in Trapelus agilis. In this relation, study of sexual dimorphism, coloration and color pattern, and natural history of the Persian

agama (Trapelus ruderatus= the formerly T. per-sicus) is of interest and importance.

The patterns of sexual dimorphism in the Persian agama, T. ruderatus, in relation to environmental issues are discussed. We studied sexual dimorphism and some aspects of natural history and behavior of the Persian agama (Trapelus ruderatus ruderatus) from southwestern Iran. Uni-and multi-variate statistical procedures were employed to explore the paptterns of sexual dimorphism in the Persian agama. Based on the statistical analyses, some characters show significant differences between males and females.

Key words: Trapelus ruderatus, sexual dimorphism, natural history, Ilam, Iran.

COBPEMEHHA3 TEPnETO.nOrHtf 2010 T. 10, Bbm. 3/4

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