Description of Bisbalus, a New Genus for the Gray Brocket, Mazama cita Osgood, 1912 (Mammalia, Cervidae), as a Step to Solve the Neotropical Deer Puzzle

Autor(es)

Sandoval, Eluzai Dinai Pinto ; Jedrzejewski, Wlodzimierz ; Molinari, Jesus ; Vozdova, Miluse ; Cernohorska, Halina ; Kubickova, Svatava ; Bernegossi, Agda Maria ; Caparroz, Renato ; Duarte, Jose Mauricio Barbanti

• Tipo de documento: Artigo Científico
• Fonte: TAXONOMY; v. 4, n. 1, p. 17-pg., 2024-03-01.

Resumo

The Neotropical deer genus Mazama is characterized by homoplastic morphological characters, a high karyotypic diversity, and a polyphyletic condition. The species of the genus have been recovered into two multigeneric lineages, the subtribes Odocoileina and Blastocerina, of the tribe Odocoileini (New World deer) in the family Cervidae. Within the Blastocerina, gray brockets include two non-sister species, Subulo gouazoubira, occurring south of the Amazon region, and Passalites nemorivagus, occurring in the Guianas and in the Amazon region. We clarify the taxonomic status and phylogenetic position of Mazama americana citus Osgood, 1912 (referred to as either S. gouazoubira or P. nemorivagus by other authors). We collected a topotype of M. a. citus from the eastern shore of Lake Maracaibo, Venezuela, characterize it morphologically and cytogenetically (conventional banding and fluorescence in situ hybridization), and carry out a phylogenetic analysis of its whole mitogenome and Cytb alongside two additional specimens of M. a. citus from northwestern Venezuela. Our analyses reveal the topotype to be a large gray brocket with a cinnamon band above the eyes and 2n = 61 and FN = 70 karyotype. Using cattle whole chromosome painting and bacterial artificial chromosome X probes, we determined its karyotype to differ in at least 10 rearrangements from that of S. gouazoubira. Bayesian inference recovers M. a. citus within the Blastocerina subtribe, separated phylogenetically from other gray brockets (100% branch value), revealing the Osgood's gray brocket to be a valid species that should be assigned to a new genus. We propose the generic name Bisbalus, with Bisbalus citus (Osgood, 1912) as the type species. (AU)

• Processo FAPESP: 19/06940-1 - O uso da citogenética molecular para estudos evolutivos e taxonômicos em cervídeos
• Beneficiário: José Maurício Barbanti Duarte
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/07014-8 - O uso de topotipos atuais para produção de genótipos e citótipos na revisão taxonômica do gênero Mazama: a base para a conservação das espécies
• Beneficiário: José Maurício Barbanti Duarte
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático