Larval development of Euphausia superba Dana, 1852 and a phylogenetic analysis of the Euphausiacea

  title={Larval development of Euphausia superba Dana, 1852 and a phylogenetic analysis of the Euphausiacea},
  author={Andreas Maas and Dieter Waloszek},
Literature data and new investigations by SEM of selected ontogenetic stages of the Antarctic Krill, Euphausia superba Dana, 1852 revealed morphological characters that are either missing in, or significantly changed towards, the adult. Besides adult features, such ontogenetic characters enabled us to propose a hypothesis of the phylogenetic relationships of and within the Euphausiacea on the basis of a computer aided cladistic analysis. These are of the form (Bentheuphausia amblyops… 

A phylogenetic study of krill (Crustacea: Euphausiacea) reveals new taxa and co‐evolution of morphological characters

The first comprehensive phylogenetic study of Euphausiacea is presented and reveals three groups of morphological characters, which are probably coupled with the same biological role and thus interlinked evolutionarily: antennular peduncle and petasma, eyes and anterior thoracopods, and shape of carapace and pleon.

Ingolfiellidea (Crustacea, Malacostraca, Amphipoda): a phylogenetic and biogeographic analysis

An attempt to relate the geographic distribution and ecological characteristics to the phylogeny of the Ingolfiellidea results in a paleogeographic scenario that points to a freshwater subterranean origin for the group that dates from at least Triassic times.

Hesslandona angustata (Phosphatocopida, Crustacea) from the Upper Cambrian of western Hunan, South China, with comments on phosphatocopid phylogeny

The phosphatocopid Hesslandona angustata is re-described, originally described from Swedish 'Orsten' limestone, based on new specimens with preserved soft-body details and the evolution within this group of crustaceans is discussed.

Larval development of Notolopas brasiliensis Miers, 1886 (Brachyura: Majoidea: Pisidae) described from laboratory reared material and a reappraisal of the characters of Pisidae

It was showed that only a combination of characters could differentiate Notolopas from other pisid genera, and there are no common sets of larval characters that would define Pisidae nowadays.

Re-Study of Larval Stages of Amphionides Reynaudii (Malacostraca: Eucarida) with Modern Imaging Techniques

The very gradual developmental pattern of A. reynaudii proves to be even more gradual than originally described, and this pattern of development is most likely plesiomorphic.

Embryo and early larval stages of the Humboldt Current krill Euphausia mucronata (Crustacea: Euphausiacea)

The morphology and development time of these life stages are described and constitutes a baseline for future ecological studies on distribution and temporal variability of spawning activity and reproductive strategies of E. mucronata in the highly variable and productive Humboldt Current ecosystem.

Phosphatocopina – ostracode-like sister group of Eucrustacea

The Phosphatocopina are considered to be the sister group of the Eucrustacea, a record of ostracode Crustacea restricted to a particular time zone and may be useful as stratigraphic markers.

Biology and Ecology of Antarctic Krill

  • V. Siegel
  • Environmental Science
    Advances in Polar Ecology
  • 2016
The first description of Antarctic krill (Euphausia superba) dates back to 1850. After a period of taxonomic work and the description of several synonyms, detailed studies on the morphology, internal




Evidence of their specific relationship was found in a detailed study of these features and of the morphology of larval appendages, and there seemed to be sufficient justification for re­ ferral of the three unidentified early stages to T. tTicuspidata.

The Upper Cambrian Rehbachiella and the phylogeny of Branchiopoda and Crustacea

This study on Rehbachiella supports the monophyly of the crown-group Crustacea and reveals that only the first maxilla was morphologically and functionally included into the crustacean head, while subsequent limbs were addted to the head in a stepwise manner and became modified separately within the different crustacea lineages, which is of great relevance when evaluating the relationships between these.


The larval development of Euphausia gibboides is described and illustrated, including nauplius stages I and II, metanauplius stage, calyptopis stages I-III, and furcilia stages I-VI; dominant and

Phylogenetic implications of the Crustacean nauplius

  • H. Dahms
  • Biology, Environmental Science
  • 2004
Swimming is suggested to represent the underived mode of locomotion for the crustacean nauplius, and that nau pliar swimming directly results in nauPLiar feeding which also is underived.

Larval development of the rhizocephalan cirripede Briarosaccus tenellus (Maxillopoda: Thecostraca) reared in the laboratory: a scanning electron microscopy study

A homology scheme between antennulary setae in these two species is established and the terminology used in describing cirripede nauplius and cypris larvae is revealed, often misleading or even erroneous and improvements are suggested.

Die Calyptopis- und Furcilia-Stadien vonEuphausia hanseni (Crustacea: Euphausiacea)

  • R. Weigmann-Haass
  • Environmental Science
    Helgoländer wissenschaftliche Meeresuntersuchungen
  • 2005
The mandible of larval Euphausiacea produces an asymmetric lacinia mobilis and a pair of processus incisivus accessorius (spine row) which are lacking in adult Eucarida.

Upper Cambrian stem-lineage crustaceans and their bearing upon the monophyletic origin of Crustacea and the position of Agnostus

Three new arthropods in uncompressed condition have been discovered in Upper Cambrian limestone nodules of Vastergotland, Sweden and their morphology provides new insights into the evolutionary path and progressive development of ground plan characteristics along the stem-lineage and gives further support for the monophyletic origin of Crustacea.

A new abyssal euphausiid, Thysanopoda minyops with comparisons of eye size, photophores, and associated structures among deep-living species

Eye size increases rapidly during ascent of early larval stages from bathypelagic to upper-mesopelagic depths, decreases rapidly in later larval life during descent to postlarval depths, and increases slowly thereafter, accompanying relative diminution of photophores.

Limb ontogeny and trunk segmentation in Nebalia species (Crustacea, Malacostraca, Leptostraca)

The presence of a row of ventral, sternitic, triangular processes between the bases of the thoracopods, as they are found in certain stages of a species of Nebalia, is suggested as a possible ground pattern for the Malacostraca.

Comparative SEM Studies of Lattice Organs: Putative Sensory Structures on the Carapace of Larvae from Ascothoracida and Cirripedia (Crustacea Maxillopoda Thecostraca)

The results confirm that the cyprid morphology at the ultrastructural level will prove to be of high value in estimating phylogeny within the Cirripedia.