Morphological and molecular analyses of Blackfordia sp. (Hydrozoa: Leptothecata) newly discovered in Vietnam

Hydrozoan jellyfish of the genus Blackfordia currently consist of three described species: B. manhattensis, B. virginica and B. polytentaculata. These species are distinguished by combinations of the position and shape of the gonads, the number of marginal tentacles, and the presence or absence of black pigments on the bell rim. We discovered a species of the genus Blackfordia in Vietnam for the first time. Morphological and molecular analyses revealed that this Vietnamese Blackfordia had an intermediate number of tentacles compared with its congeners, and a similar number of tentacles had been reported in Blackfordia only in Brazil, Mexico and India. Mitochondrial DNA analysis indicated that Vietnamese Blackfordia formed a sub-clade with “B. virginica” from Brazil, and differed from B. virginica from other locations, having a K2P distance of >0.13. These results suggest that Blackfordia sp. found in Vietnam (and Brazil) may be a different species from B. virginica found elsewhere, though more information is needed to establish this new species.

• Publication year

  2021

• Venue

  Plankton and Benthos Research

• Publication date

  2021-05-27

• Fields of study

  Biology, Environmental Science

• Identifiers
  DOI 10.3800/PBR.16.118
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

• First record of the non-indigenous jellyfish Blackfordia virginica (Mayer, 1910) in the Baltic Sea

  2018cited by this paper
• MEGA7: Molecular Evolutionary Genetics Analysis Version 7.0 for Bigger Datasets.

  2016cited by this paper
• Towards a phylogenetic classification of Leptothecata (Cnidaria, Hydrozoa)

  2016cited by this paper
• DNA barcoding of pelagic cnidarians : current status and future prospects (日本プランクトン学会2014年度春季シンポジウム 遺伝子解析とプランクトン研究)

  2015influential reference
• First record of two invasive hydromedusae Maeotias marginata (Modeer, 1791) (Hydrozoa: Limnomedusae) and Blackfordia virginica Mayer, 1910 (Hydrozoa: Leptomedusae) in Japan

  2015cited by this paper
• 16S rRNA is a better choice than COI for DNA barcoding hydrozoans in the coastal waters of China

  2014cited by this paper
• The exotic jellyfish Blackfordia virginica introduced into the Netherlands (Cnidaria: Hydrozoa)

  2014cited by this paper
• High genetic diversity in the hydroid Plumularia setacea: a multitude of cryptic species or extensive population subdivision?

  2014cited by this paper
• The non-indigenous medusa Blackfordia virginica (Hydrozoa, Leptothecata) in tropical Brazil: 50 years of unnoticed presence

  2013cited by this paper
• Low genetic diversity of the putatively introduced, brackish water hydrozoan, Blackfordia virginica (Leptothecata: Blackfordiidae), throughout the United States, with a new record for Lake Pontchartrain, Louisiana

  2013influential reference
• DNA Barcoding the Medusozoa using mtCOI

  2010influential reference
• European Enclosed and Semi-enclosed Seas

  2009cited by this paper
• Alien species in the Guadiana Estuary (SE-Portugal/SW-Spain): Blackfordia virginica (Cnidaria, Hydrozoa) and Palaemon macrodactylus (Crustacea, Decapoda): potential impacts and mitigation measures

  2009cited by this paper
• The invasive hydromedusae Blackfordia virginica Mayer, 1910 (Cnidaria: Blackfordiidae) in southern Brazil, with comments on taxonomy and distribution of the genus Blackfordia

  2009influential reference
• Effect of acid Lugol solution as preservative on two representative chitineous and gelatinous zooplankton groups

  2009cited by this paper
• Biological Invasions by Marine Jellyfish

  2008cited by this paper
• FaBox: an online toolbox for fasta sequences

  2007influential reference
• First record of the invasive medusa Blackfordia virginica (Hydrozoa: Leptomedusae) in the Río de la Plata estuary, Argentina-Uruguay

  2006cited by this paper
• Moerisia inkermanica Paltschikowa-Ostroumova (Hydrozoa; Moerisidae) e Blackfordia virginica Mayer (Hydrozoa; Blackfordiidae) na Baía de Antonina, Paraná, Brasil.

  2006cited by this paper
• Phylogeny of Capitata and Corynidae (Cnidaria, Hydrozoa) in light of mitochondrial 16S rDNA data

  2005cited by this paper
• Hydromedusae of the Agulhas Current

  2005cited by this paper
• Variaciones morfológicas en Blackfordia virginica (Hydroidomedusae: Blackfordiidae) en lagunas costeras de Chiapas, México

  2003influential reference
• Exotic species in the Aegean, Marmara, Black, Azov and Caspian Seas

  2001cited by this paper
• TCS: a computer program to estimate gene genealogies

  2000influential reference
• Invertebrate introductions in marine habitats: two species of hydromedusae (Cnidaria) native to the Black Sea, Maeotias inexspectata and Blackfordia virginica, invade San Francisco Bay

  1995cited by this paper
• Notes additionnelles sur les méduses de Papouasie Nouvelle-Guinée (Hydrozoa, Cnidaria) III.

  1988influential reference
• Redescription of the leptomedusan Blackfordia virginica

  1987influential reference
• A simple method for estimating evolutionary rates of base substitutions through comparative studies of nucleotide sequences

  1980cited by this paper
• Synopsis of the Medusae of the World

  1961influential reference
• Hydromedusae of the Atlantic Ocean and adjacent waters

  1959cited by this paper
• Hydromedusae in the Indian Museum

  1955influential reference
• Medusae of the World. Volume I. The Hydromedusae

  year unknowninfluential reference

• Genetic structure of invasive ctenophore Mnemiopsis leidyi populations in temperate northern European waters is consistent with a southern North Sea overwintering refuge

  2025cites this paper
• Evidence for non-indigenous freshwater jellyfish Craspedacusta sowerbii spreading in Finland

  2025cites this paper
• High haplotype diversity and strong phylogeographic structure in the invasive jellyfish Blackfordia virginica population highlight its complex demographic history in Korea

  2024influential citation
• Spatio-temporal distribution of gelatinous zooplankton in tropical mangrove estuaries: Environmental drivers and possible mangrove disturbance effects

  2022cites this paper
• Genetic diversities of commercially harvested jellyfish, Rhopilema hispidum and Lobonemoides robustus in Southeast Asia

  2021cites this paper
• Genetic structure of invasive ctenophore Mnemiopsis leidyi populations in temperate northern European waters supports the southern North Sea overwintering refuge

  year unknowncites this paper