Fig. 13 Nauplii 1 in Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept ...

• Main Authors: Kolbasov, Gregory A., Petrunina, Alexandra S., Dreyer, Niklas, Prudkovsky, Andrey A., Olesen, Jørgen, Chan, Benny K. K., Høeg, Jens T.
• Format: Still Image
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; White Sea
• Online Access: https://dx.doi.org/10.5281/zenodo.13181591; https://zenodo.org/doi/10.5281/zenodo.13181591

Fig. 13 Nauplii 1 of Ascothoracida (Sessilogoga captiva Kolbasov et al. 2020 from Taiwan) - a, b and Cirripedia (Balanus balanus (Linnaeus 1758) from the White Sea) - c-f; note absence of frontal filaments and vestiges of maxillules; smooth cuticle without developed sculpture and long setae; smooth labrum without pores and setae; limbs without distinct segmentation; half-formed feeding armament of limbs bearing shorter swimming setae and gnathobases; and short furcal and dorsocaudal spines a Ventral side of moulting nauplius 1, shedding cuticle (n1-ev) peeled away to reveal frontal filaments (ff) of second instar. b Lateral side, anterior cuticle of dorsal shield (n1-ev) peeled away to reveal wrinkled cuticle of second instar. c Dorsal side, note frontolateral horns pressed to the side. d Ventrolateral view from posterior end, note undeveloped gnathobases and small, slit- shaped mouth (mo). e Anterior side, note absence of frontal filaments. f Anterioventral view, shedding cuticle (n1-ev) peeled away to ... : Published as part of Kolbasov, Gregory A., Petrunina, Alexandra S., Dreyer, Niklas, Prudkovsky, Andrey A., Olesen, Jørgen, Chan, Benny K. K. & Høeg, Jens T., 2021, Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept, pp. 209-230 in Organisms Diversity & Evolution (New York, N.Y.) 21 (1) on page 225, DOI: 10.1007/s13127-021-00479-y, http://zenodo.org/record/13181566 ...