Nauplii of Tegastes Falcatus (Norman, 1869) (Harpacticoida, Tegastidae), a Copepod with an Unusual Naupliar Mouth and Mandible
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
You must be logged in to use this functionality
AbstractThere are six stages in the naupliar phase of development of Tegastes falcatus (Norman, 1869). The labrum is expressed as a simple fold which does not cover the mouth. A poorly-sclerotized mouth tube was observed on some specimens of all stages except NI (= naupliar stage 1); NI and NII are the only stages without an anus and presumably do not feed. The antennal endopod is a subchela against itself at NII; its distal endopodal segment becomes bifurcate at NIII. A chela on the naupliar mandible consists of the endopod opposite a distoventral attenuation of the basis on NII-NVI. The segmental elements of a chela are present at NI, although the endopod does not oppose the basis at this stage. The maxillule is a unilobe bud with one seta at NIII that gains a second seta at NV and is transformed into a simple bilobe bud with three setae at NVI. The maxilla and maxilliped are each an asetose, ventral attenuation at NVI. Naupliar stages, found in large numbers along with all six copepodid stages of T. falcatus, apparently feed on suctorian ciliates growing on colonies of the bryozoan Flustra foliacea (Linnaeus, 1758). This is the first description of six naupliar stages for a species of Tegastidae Sars, 1904.
Full text loading...
Bartsch I. 1999 "Three new species of Syngastes (Tegastidae, Harpacticoida, Copepoda) from Western Australia, pp. 295-313."
Bodin P. 1997 "Catalogue of the new marine harpacticoid copepods (1997 edition)." Studiedocumenten van het Koninklijk Belgisch Institut voor Natuurwetenschappen Vol 89 1 304
Chislenko L. L. 1967 "Copepoda Harpacticoida of the Karelian coast of the White Sea. Garpaktitsidy (Copepoda Harpacticoida) Karelskogo poberezh'ya Belogo morya." Issledovaniya Fauny Morei Vol 7 48 196
Dahms H-U. 1990 "Naupliar development of Harpacticoida (Crustacea, Copepoda) and its significance for phylogenetic systematics." Microfauna Marina Vol 6 169 272
Dahms H-U. 1993 "Comparative copepodid development in Tisbidimorpha sensu Lang, 1948 (Copepoda, Harpacticoida) and its bearing on phylogenetic considerations,." Hydrobiologia Vol 250 15 37
Dahms H-U. 2004 "Postembryonic apomorphies proving the monophyletic status of the Copepoda." Zoological Studies Vol 43 446 453
Ferrari F. D. 1995 "Six copepodid stages of Ridgewayia klausruetzleri, a new species of calanoid copepod (Ridgewayiidae) from the barrier reef in Belize, with comments on appendage development." Proceedings of the Biological Society of Washington Vol 108 180 200
Ferrari F. D. , Dahms H-U. 2007 "Post-embryonic Development of the Copepoda." Crustaceana Monographs Vol 8 i vi 1 226
Ferrari F. D. , Ueda H. 2005 "Development of the fifth leg of copepods belonging to the calanoid superfamily Centropagoidea (Crustacea)." Journal of Crustacean Biology Vol 25 333 352
Ho J-S. 2001 "Why do symbiotic copepods matter?." Hydrobiologia Vol 453/454 1 7
Humes A. G. 1981a "A new species of Tegastes (Copepoda: Harpacticoida) associated with a scleractinian coral at Eniwetok atoll." Proceedings of the Biological Society of Washington Vol 94 254 263
Humes A. G. 1981b "Harpacticoid copepods associated with Cnidaria in the Indo West Pacific." Journal of Crustacean Biology Vol 94 227 240
Humes A. G. 1984 "Harpacticoid copepods associated with cnidarians in the tropical Pacific Ocean." Zoologica Scripta Vol 13 209 221
Ivanenko V. N. , Defaye D. 2004 "A new and primitive genus and species of deep-sea Tegastidae (Crustacea, Copepoda, Harpacticoida) from the Mid-Atlantic Ridge, 37N (Azores triple junction, Lucky Strike)." Cahiers de Biologie Marine Vol 45 255 268