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Die Calyptopis- und Furcilia-Stadien vonEuphausia hanseni (Crustacea: Euphausiacea)
The calyptopis and furcilia stages ofEuphausia hanseni (Crustacea: Euphausiacea)
Helgoländer wissenschaftliche Meeresuntersuchungen volume 29, pages 315–327 (1977)
Abstract
The larval development is discussed and calyptopis stages I–III as well as furcilia stages I–VII are described. The larval development is similar to that ofE. spinifera, E. longirostris andE. triacantha (group d of genusEuphausia). Antennule, antenna, mandible, maxillule, maxilla and spines on the telson are unsuitable for identifying the larvae of different species of the genusEuphausia. The following characteristics can be used to distinguish the different larvae: form and marginal spines of the carapace, form of the rostrum, spines on the segments of the abdomen, and number and form of the pleopods. The mandible of larval Euphausiacea produces an asymmetric lacinia mobilis and a pair of processus incisivus accessorius (spine row). These two appendages are lacking in adult Eucarida.
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Weigmann-Haass, R. Die Calyptopis- und Furcilia-Stadien vonEuphausia hanseni (Crustacea: Euphausiacea). Helgolander Wiss. Meeresunters 29, 315–327 (1977). https://doi.org/10.1007/BF01614268
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DOI: https://doi.org/10.1007/BF01614268