Macro-morphological variation among cryptic species of the moon jellyfish, Aurelia (Cnidaria: Scyphozoa)

  title={Macro-morphological variation among cryptic species of the moon jellyfish, Aurelia (Cnidaria: Scyphozoa)},
  author={Michael N. Dawson},
  journal={Marine Biology},
  • M. Dawson
  • Published 2003
  • Environmental Science, Biology
  • Marine Biology
Morphological variation in qualitative and quantitative features is compared among species of Aurelia defined a priori using molecular criteria. Macro-morphological features were more numerous than previously implied (28 cf. 17), most were variable (26 of 28), and all species were morphologically distinguishable using univariate, multivariate and phylogenetic statistics. However, due to discrepant morphological descriptions, Aurelia spp. 3, 4, and 6 could not be assigned reliably to any… 
Can Aurelia (Cnidaria, Scyphozoa) species be differentiated by comparing their scyphistomae and ephyrae?
Morphological characteristics of scyphistomae were similar among the 17 populations but those of ephyrae were effective discriminators in the 6 cases examined, suggesting species should be identified based on differences in the time span of the strobilation process of Aurelia congeners.
The importance of molecular characters when morphological variability hinders diagnosability: systematics of the moon jellyfish genus Aurelia (Cnidaria: Scyphozoa)
It is demonstrated that morphological variability in Aurelia medusae overlaps across very distant geographic localities, and clarifies the practical implications of molecular genetic data as diagnostic characters, and sheds light on the patterns and processes that generate crypsis.
Revealing 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 species
Sexual dimorphic traits are included for the first time in the descriptions of Cassiopea species as well as molecular analyses, which support two distinct species.
Formal nomenclature and description of cryptic species of the Encyrtus sasakii complex (Hymenoptera: Encyrtidae)
Three Encyrtus species were diagnosed on the basis of the characteristics that resulted from genetic markers (mitochondrial cytochrome c oxidase subunit I and nuclear 28S rRNA) and biological data, and a formal nomenclature and description of cryptic species was provided on the based of an integrated taxonomy.
Species composition of Discomedusae jellyfish (Scyphozoa) in the coastal waters of Eastern Surabaya, East Java
The Indo-Pacific is recognized as a hotspot for marine diversity. The taxonomy of certain taxa, such as Discomedusae jellyfish, has been neglected, despite its importance in the fishery industry.
Grounds for genus Aurelia subdivision: Two jellyfish populations differ in mesoglein amino acid sequences
The results evidence that there are two different species in the genus Aurelia: aurita inhabits the White and Black Seas, while Aurelia sp.
Comparative genetics of scyphozoan species reveals the geological history and contemporary processes of the Mediterranean Sea
The findings demonstrate that jellyfish genomes can be used as a phylogeographic molecular tool to trace past events across large temporal scales and reveal invasive species introduction due to human activity.
Here are the polyps: in situ observations of jellyfish polyps and podocysts on bivalve shells
The inside of bivalve shells washed ashore in Oostende (Belgium) was inspected and supposed podocysts on the inside of empty valves of Cerastoderma edule and Spisula elliptica were found and identified to species level by 18S rDNA and mitochondrial COI sequencing.
Scyphomedusae and Ctenophora of the Eastern Adriatic: Historical Overview and New Data
One of the obstacles to detecting regional trends in jellyfish populations is the lack of a defined baseline. In the Adriatic Sea, the jellyfish fauna (Scyphozoa and Ctenophora) is poorly studied
Colour polymorphism and genetic structure in the cannonball jellyfish (Stomolophus meleagris, L. Agassiz, 1860) in the Gulf of California
The results suggest that S. meleagris in the Gulf of California exist as a single genetic stock, and the different pigmentation patterns observed may result from specific environmental conditions.