A redescription of Tenagomysis species and Gastrosaccus australis from estuarine environments (Crustacea: Mysida) in Auckland region, New Zealand
Downloads
Investigation of mysid habitats in estuarine waters were conducted at 59 sites throughout Auckland region from May 2006 to January 2009. This paper provides the taxonomic descriptions of the three species, collected during this survey. Among the 59 sites mysids were collected only at 26 sites: Tenagomysis chiltoni collected from 15 sites, T. novaezealandiae from 21 sites and Gastrosaccus australis from four sites. Ontogenetic variation observed in the size of the antennal scale, and counts of lateral spines and cleft spines of telson and uropod for both T. chiltoni and T. novaezealandiae. Such apparent characteristics should not be used alone to differentiate species. It is important to use a combination of characteristics such as shape of the rostrum, anterolateral margin of the carapace, number of articulations of carpo-propodus of thoracic limbs and shape and size of the antennal scale. Several aspects of the description of T. chiltoni provided by Tattersall (1923) and Hodge (1964), do not agree with the present specimens, this is due to size variations.
Downloads
Chapman M.A., Lewis M.H. (1976). An introduction to the freshwater Crustacea of New Zealand. Auckland and London: Collins.
Fenton G.E. (1991). Three new species of Tenagomysis from the coastal waters of south-eastern Tasmania (Crustacea: Mysidae: Mysinae: Leptomysini). Memoirs of Museum Victoria, 52(2): 325-335.
Hodge G. (1964). A redescription of Tenagomysis chiltoni (Crustacea: Mysidacea) from a freshwater coastal lake in New Zealand. New Zealand Journal of Science, 7: 387-395.
Jones M.B., Greenwood J.G., Greenwood J. (1989). Distribution, body size, and brood characteristics of four species of mysids (Crustacea: Peracarida) in the Avon-Heathcote Estuary, New Zealand. New Zealand Journal of Marine and Freshwater Research, 23: 195-199.
Lill A.W.T., Closs G.P., Savage C., Schallenberg M. (2011). Annual secondary production of two estuarine mysid species (Mysidacea: Mysidae) inhabiting an intermittently closed estuary, south-eastern New Zealand. New Zealand Journal of Marine and Freshwater Research, 62(7): 823-834.
Melland K., Willassen E. (2007). The disunity of "Mysidacea" (Crustacea). Mollecular Phylogenetics and Evolution, 44(3): 1083-1104.
Nipper M.G., Williams E.K. (1997). Culturing and toxicity testing with the New Zealand mysid species. Australian Journal of Ecotoxicology, 3(2): 117-129.
Roper D.S., Simons M.J., Jones M.B. (1983). Distribution of zooplankton in the Avon Heathcote Estuary, Christchurch. New Zealand Journal of Marine and Freshwater Research, 17: 267-278.
Sutherland D.L., Closs G.P. (2001). Diel patterns of mysid drift (Crustacea: Mysidacea) in the Taieri River Estuary, New Zealand. New Zealand Journal of Marine and Freshwater Research, 35: 197-200.
Tattersall W.M. (1918). Euphausiacea and Mysidacea. Australian Antarctic expedition, 1911– 1914. Scientific Reports. Series C Zoology and Botany, 5(5): 1-15.
Tattersall W.M. (1923). Crustacea. Part VII: Mysidacea. British Antarctic (Terra Nova) Expedition, 1910. Natural History Report (Zoology), 3(10): 273-304.
Thomson G.M. (1900). On some New Zealand Schizopoda. Journal of the Linnean Society of London, Zoology, 27(178): 482-486.
