evealing hidden diversity among upside-down jellyfishes (Cnidaria: Scyphozoa: Rhizostomeae: Cassiopea): distinct evidence allows the change of status of a neglected variety and the description of a new specie

Autor(es)

Gamero-Mora, Edgar ^[1] ; Collins, Allen G. ^[2] ; Boco, Sheldon Rey ^{[3, 4]} ; Geson, Serafin Mendez ^[5] ; Morandini, Andre C. ^{[1, 6]} ; Wilson, Nerida

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Biociencias, Dept Zool, Rua Matao Travessa 14, 101, BR-05508090 Sao Paulo - Brazil

^[2] Smithsonian Inst, Natl Systemat Lab, Natl Ocean & Atmospher Adm, Fisheries Serv, Natl Museum Nat Hist, Washington, DC 20013 - USA

^[3] Griffith Univ, Sch Environm & Sci, Gold Coast Campus, Nathan, Qld 4215 - Australia

^[4] Griffith Univ, Australian Rivers Inst Coasts & Estuaries, Gold Coast Campus, Nathan, Qld 4215 - Australia

^[5] Univ San Carlos, Marine Biol Sect, Cebu - Philippines

^[6] Univ Sao Paulo, Ctr Biol Marinha, Rodovia Dr Manoel Hipolito do Rego, Km 131-50, BR-11612109 Sao Sebastiao, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INVERTEBRATE SYSTEMATICS; v. 36, n. 1, p. 63-89, 2022.
• Citações Web of Science: 0

Resumo

Morphological variability within Cassiopea is well documented and has led to inaccuracies in the establishment of species boundaries in this taxon. Cassiopea medusae specimens from the Western Pacific (Japan and the Philippines) were analysed using multiple lines of complementary evidence, including types of cnidae, macro-morphology and molecular data. These observations lead to the recognition of two distinct species: Cassiopea mayeri, sp. nov. and a previously synonymised variety now raised to species level (Cassiopea culionensis, stat. nov.). These species can be distinguished from each other using morphological features. Herein, sexually dimorphic traits are included for the first time in the descriptions of Cassiopea species. Nematocyst types not previously observed in the genus are also reported. Molecular analyses, based on individual and combined markers (16S + cytochrome c oxidase I, COI), also support two distinct species; they are not sister taxa, and both are nested together within a clade of other Cassiopea members from the Australian and Indo-Pacific regions. Species richness is underestimated in the Western Pacific region, and integrative approaches are helpful to reveal and describe species. The systematics of Cassiopea is far from completely understood, but the present study represents an important further step. http://www.zoobank.org/References/B1A66787-009D-4465-954A-412C6878FCB4. (AU)

• Processo FAPESP: 15/21007-9 - Reconhecendo a diversidade de águas-vivas (Medusozoa, Rhopaliophora)
• Beneficiário: André Carrara Morandini
• Modalidade de apoio: Auxílio à Pesquisa - Regular