Mitogenome analyses elucidate the evolutionary relationships of a probable Eocene wet tropics relic in the xerophilic lizard genus Acanthodactylus

Autor(es)

Kirchhof, Sebastian ^[1] ; Lyra, Mariana L. ^{[2, 3]} ; Rodriguez, Ariel ^[4] ; Ineich, Ivan ^[5] ; Mueller, Johannes ^[6] ; Rodel, Mark-Oliver ^[6] ; Trape, Jean-Francois ^[7] ; Vences, Miguel ^[8] ; Boissinot, Stephane ^[1]

Afiliação do(s) autor(es)

^[1] New York Univ Abu Dhabi, Abu Dhabi, Saadiyat Island - U Arab Emirates

^[2] Univ Estadual Paulista, Inst Biociencias, Dept Biodiversidade, BR-13506900 Rio Claro, SP - Brazil

^[3] Univ Estadual Paulista, Ctr Aquicultura CAUNESP, BR-13506900 Rio Claro, SP - Brazil

^[4] Univ Vet Med Hannover, Inst Zool, Bunteweg 17, D-30559 Hannover - Germany

^[5] Univ Antilles, Ecole Prat Hautes Etud, Sorbonne Univ, Museum Natl Hist Nat, Inst Systemat Evolut Biodiversite ISYEB, CNRS, CP 30, 57 Rue Cuvier, F-75005 Paris - France

^[6] Leibniz Inst Evolut & Biodivers Sci, Museum Nat Kunde, Invalidenstr 43, D-10115 Berlin - Germany

^[7] UMR MIVEGEC, IRD, Lab Paludol & Zool Med, BP 1386, Dakar - Senegal

^[8] Tech Univ Carolo Wilhelmina Braunschweig, Zool Inst, Mendelssohnstr 4, D-38106 Braunschweig - Germany

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 11, n. 1 MAR 1 2021.
• Citações Web of Science: 0

Resumo

Climate has a large impact on diversity and evolution of the world's biota. The Eocene-Oligocene transition from tropical climate to cooler, drier environments was accompanied by global species turnover. A large number of Old World lacertid lizard lineages have diversified after the Eocene-Oligocene boundary. One of the most speciose reptile genera in the arid Palearctic, Acanthodactylus, contains two sub-Saharan species with unresolved phylogenetic relationship and unknown climatic preferences. We here aim to understand how and when adaptation to arid conditions occurred in Acanthodactylus and when tropical habitats where entered. Using whole mitogenomes from fresh and archival DNA and published sequences we recovered a well-supported Acanthodactylus phylogeny and underpinned the timing of diversification with environmental niche analyses of the sub-Saharan species A. guineensis and A. boueti in comparison to all arid Acanthodactylus. We found that A. guineensis represents an old lineage that splits from a basal node in the Western clade, and A. boueti is a derived lineage and probably not its sister. Their long branches characterize them-and especially A. guineensis-as lineages that may have persisted for a long time without further diversification or have undergone multiple extinctions. Environmental niche models verified the occurrence of A. guineensis and A. boueti in hot humid environments different from the other 42 arid Acanthodactylus species. While A. guineensis probably remained in tropical habitat from periods prior to the Eocene-Oligocene boundary, A. boueti entered tropical environments independently at a later period. Our results provide an important baseline for studying adaptation and the transition from humid to arid environments in Lacertidae. (AU)

• Processo FAPESP: 17/26162-8 - Diversidade e conservação dos anfíbios brasileiros
• Beneficiário: Mariana Lúcio Lyra
• Modalidade de apoio: Bolsas no Brasil - Programa Capacitação - Treinamento Técnico