Abstract
Nanomysis siamensis W.M. Tattersall, 1921 is a shallow water mysid which was first described from the Thale Luang and the Thale Sap waters, Songkhla Lagoon System in southern Thailand. Recently, this species was captured further south, in the Thale Sap Songkhla waters. In this study, we provide updated records on spatial distribution of the species in the Songkhla Lagoon System. A total of 272 individuals of this species were observed, and illustrations of the body including all appendages are presented. Among them, the mandible, maxillule and maxilla are described for the first time. Morphological characteristics of N. siamensis are compared with other two known species of the genus Nanomysis.
References
Fukuoka, K. & Murano, M. (2002) Mysidacea (Crustacea) from the south-eastern Andaman Sea with descriptions of six new species. Phuket Marine Biological Center Special Publication, 23 (1), 53–108.
Fukuoka, K., Pinkaew, K. & Chalermw, K. (2005) A new species of Orientomysis (Crustacea: Mysida: Mysidae) from the Gulf of Thailand. Species Diversity, 10 (3), 185–190.
Hanamura, Y., Koizumi, N., Sawamoto, S., Siow, R. & Chee, P.-E. (2008a) Reassessment of the taxonomy of Mesopodopsis orientalis (Tattersall, 1908) (Crustacea, Mysida) and proposal of a new species for the genus with an appendix on M. zeylanica Nouvel, 1954. Journal of Natural History, 42 (37–38), 2461–2500. https://doi.org/10.1080/00222930802277608
Hanamura, Y., Fukuoka, K., Siow, R. & Chee, P-E. (2008b) Re-description of a little-known Asian estuarine mysid Gangemysis assimilis (Tattersall, 1908) (Peracarida, Mysida) with range extension to the Malay Peninsula. Crustacean Research, 37, 35–42.
Hanamura, Y., Murano, M. & Man, A. (2011) Review of eastern Asian species of mysid genus Rhopalophthalmus Illig, 1906 (Crustacea, Mysida) with descriptions of the three new species. Zootaxa, 2788 (1), 1–37. https://doi.org/10.11646/zootaxa.2788.1.1
Lheknim, V. & Yolanda, R. (2020) Temporal and spatial patterns of abundance and occurrence of planktonic shrimps in the Songkhla Lagoon System, southern Thailand. Bulletin of Marine Science, 96 (3), 521–538. https://doi.org/10.5343/bms.2019.0006
Meland, K., Mees, J., Porter, M. & Wittmann, K.J. (2015) Taxonomic review of the orders Mysida and Stygiomysida (Crustacea, Peracarida). PLoS ONE, 10 (4), e0124656. https://doi.org/10.1371/journal.pone.0124656
Moriya, M., Srinui, K. & Sawamoto, S. (2015) Two new species of the genus Anisomysis (Anisomysis) (Crustacea, Mysida, Mysidae) from coral reef waters in Thailand. ZooKeys, 525, 129–145. https://doi.org/10.3897/zookeys.525.5958
Murano, M. (1988) Mysidacea from Thailand with descriptions of two new species. Crustaceana, 55 (3), 293–305. https://doi.org/10.1163/156854088X00393
Murano, M. (1995) Eurobowmaniella phuketensis n. gen. n. sp. (Crustacea: Mysidacea) from the Indian coast of Thailand. Phuket Marine Biological Center Research Bulletin, 60, 21–28.
Murano, M. (1997) Nanomysis philippinensis, a new species (Crustacea: Mysidacea) from brackish waters of the Philippines. Proceedings of the Biological Society of Washington, 110 (2), 236–241.
Nouvel, H. (1957) Mysidacés provenant de deux échantillons de “Djembret” de Java. Zoologische Mededelingen, 35 (22), 315–331.
Panampunnayil, S.U. (2002) The Mysidacea of the Andaman Sea. Journal of Plankton Research, 24 (2), 371–390.
Pillai, N.K. (1973) Mysidacea of the Indian Ocean. IOBC Handbook to the International Zooplankton Collections, Indian Ocean Biological Centre, 4, 1–125.
Tattersall, O.S. (1960) Report on a small collection of Mysidacea from Singapore waters. Proceedings of the Zoological Society of London, 135, 165–181.
Tattersall, WM. (1908) Two new Mysidae from brackish water in the Ganges Delta. The fauna of blackish ponds at Port Canning, Lower Bengal. Records of the Indian Museum, 2, 233–239.
Tattersall, WM. (1914) Further records of Indian brackish water Mysidae with descriptions of a new genus and species. Records of the Indian Museum, 5, 75–80.
Tattersall, WM. (1915) Mysidacea. Fauna of the Chilka Lake. Memoirs of the Indian Museum, 5, 149–161.
Tattersall, W.M. (1921) Mysidacea, Tanaidacea, and Isopoda. Pt. 7. In: Annandale, N. (Ed.), Zoological results of a tour in the Far East. Memoires of the Asiatic Society of Bengal 6. Baptist Mission Press, The Asiatic Society of Bengal, Calcutta, pp. 403–443.
Tattersall, W.M. (1922) Indian Mysidacea. Records of the Indian Museum, 24, 445–504.
Tattersall, W.M. & Tattersall, O.S. (1951) The British Mysidacea. Ray Society, London, 460 pp.
Wittmann, K.J., Ariani, A.P. & Lagardère, J. (2014) Orders Lophogastrida Boas, 1883 Stygiomysida Tchindonova, 1981 and Mysida Boas, 1883 (also known collectively as Mysidacea). In: von Vaupel Klein, J.C., Charmantier-Daures, M. & Schram, F.R. (Eds.), Treatise on Zoology—Anatomy, Taxonomy and Biology: THE CRUSTACEA. Crustacea 4B. Koninklijke Brill NV, Leiden, pp. 189–396. https://doi.org/10.1163/9789004264939_006
Yolanda, R. (2021) The biology of mysids (Crustacea: Peracarida) in Songkhla Lagoon System, southern Thailand. PhD Thesis, Prince of Songkla University, Songkhla, Thailand, 189 pp.
Yolanda, R. & Lheknim, V. (2021) Population structure and reproductive biology of the mysid Nanomysis siamensis (Crustacea: Mysida) in Songkhla Lagoon system, southern Thailand. Journal of Oceanology and Limnology, 39 (3), 997–1009. https://doi.org/10.1007/s00343-020-0069-7
Yolanda, R., Sawamoto, S. & Lheknim, V. (2019) A new species in the genus Heteromysoides (Crustacea, Mysida, Mysidae) from Songkhla Lagoon, southern Thailand. Zoosystematics and Evolution, 95 (2), 535–542. https://doi.org/10.3897/ zse.95.39214