New species of Eirenidae (Hydrozoa: Leptothecata) from the Amazonian coast (northern Brazil)

Authors

DOI:

https://doi.org/10.3989/scimar.05051.14A

Keywords:

jellyfish, Cnidaria, Hydrozoa, taxonomy, biodiversity, Atlantic Ocean, new species

Abstract


Two new Eirenidae medusae species were collected on the Amazonian coast, Eutima marajoara n. sp. and Helgicirrha angelicae n. sp. The former differs from other species of the genus by the gonads extending along almost the entire length of the subumbrellar portion of the radial canals but not connected to the ring canal, up to 40 marginal tentacles with conical bulbs and 48 marginal warts, lateral cirri and adaxial papillae on some marginal warts and tentacular bulbs. Helgicirrha angelicae n. sp. differs from other species of the genus by the gonads on the middle portion of the radial canals with medusa buds, the short gastric peduncle, up to 20 marginal tentacles, some with adaxial papillae, up to three marginal warts and two statocysts between successive tentacles, and lateral cirri both on tentacle bulbs and marginal warts.

Downloads

Download data is not yet available.

References

Allwein J. 1967. North American Hydromedusae from Beaufort, North Carolinae. Vidensk. Meddel. Dansk Naturhist. Foren. 130: 117-136.

Araujo M., Noriega C., Hounsou-gbo G.A., et al. 2017. A Synoptic Assessment of the Amazon River-Ocean Continuum during Boreal Autumn: From Physics to Plankton Communities and Carbon Flux. Front. Microbiol. 8: 1-18. https://doi.org/10.3389/fmicb.2017.01358 PMid:28824554 PMCid:PMC5534475

Bigelow H.B. 1904. Medusae from the Maldive Islands. Bull. Mus. Comp. Zool. 39: 245-269.

Bigelow H.B. 1909. The Medusae. Reports on the scientific results of the expedition to the eastern tropical pacific, in charge of Alexander Agassiz, by the U. S. Fish Commission steamer "Albatross" from October, 1904, to March, 1905. XVI. Mem. Mus. Comp. Zool. 37: 1-243.

Boltovskoy D., Valentin J.L. 2018. Overview of the History of Biological Oceanography in the Southwestern Atlantic, with Emphasis on Plankton. In: Hoffmeyer M.S., Sabatini M.E., et al. (eds). Plankton Ecology of the Southwestern Atlantic. Springer Science+Business Media, New York, pp. 3-34. https://doi.org/10.1007/978-3-319-77869-3_1

Bouillon J. 1984. Hydroméduses de la Mer de Bismark (Papouasie Nouvelle-Guinée. Partie IV: Leptomedusae (Hydrozoa-Cnidaria). Indo-Malayan Zool. 1: 25-112.

Bouillon J. 1999. Hydromedusae. In: Boltovskoy D. (ed.), South Atlantic zooplankton. Backhuys Publishers, Leiden. pp. 424-512.

Bouillon J., Barnett T.J. 1999. The marine fauna of New Zealand: Hydromedusae (Cnidaria: Hydrozoa). National Institute of Water and Atmospheric Research (NIWA), Wellington, 136 pp.

Bouillon J., Boero F. 2000. Synopsis of the families and genera of the hydromedusae of the world, with a list of the worldwide species. Thalassia Salent. 24: 47-296.

Bouillon J., Gravili C., Pagès F., et al. 2006. An introduction to Hydrozoa. Muséum national d'Histoire naturelle, Paris, 591 pp.

Bouillon J., Medel M.D., Pagès F., et al. 2004. Fauna of the Mediterranean Hydrozoa. Sci. Mar. 68: 5-438. https://doi.org/10.3989/scimar.2004.68s25

Bouillon J., Seghers G., Boero F. 1988. Notes additionnelles sur les méduses de Papouasie Nouvelle-Guinée (Hydrozoa, Cnidaria). III. Indo-Malayan Zool. 5: 225-253.

Canché-Canché V.E., Castellanos-Osorio I. 2005. Medusas (Cnidaria) de la Bahía de la Ascensión, Quintana Roo, México (1997). Hidrobiológica 15: 65-72.

Du F., Xu Z., Huang J., et al. 2012. Studies on the medusae (Cnidaria) from the Beibu gulf in the Northern South China Sea, with description of three new species. Acta Zootaxon. Sinica 37: 506-519.

Guo D., Xu Z., Huang J. 2008. Two new species of Eirenidae from the coast of southeast China. Acta Oceanol. Sin. 27: 61-66.

Guo D., Xu Z., Huang J., et al. 2019. Two new hydrozoan species from the Taiwan Strait, China (Cnidaria: Hydrozoa: Leptothecata). Zool. System. 43: 185-190.

Haeckel E. 1864. Beschreibung neuer Craspedoter Medusen aus dem Golfe von Nizza. Jenaer Zeitschrift für Medizin und Naturwissenschaften 1: 326-342.

Hays G.C., Doyle T.K., Houghton J.D.R. 2018. A Paradigm Shift in the Trophic Importance of Jellyfish? Trends Ecol. Evol. 33: 874-884. https://doi.org/10.1016/j.tree.2018.09.001 PMid:30245075

Huang J., Xu Z., Lin M., et al. 2010. Two new species of Leptomedusae from Taiwan Strait and its adjacent waters, China. J. Xiamen Univ. (Natural Science) 49: 87-90.

Kakinuma Y. 1964. A new commensal hydrozoan, Eugymanthea cirrhifera n. sp. from Hachinohe. Bul. Mar. Biol. Stn. Asamushi 12: 51-57.

Kramp P.L. 1958. Hydromedusae in the Indian museum. Rec. Ind. Mus. 53: 339-376.

Kramp P.L. 1959. Some new and little-known Indo-Pacific medusae. Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening 121: 223-259.

Kramp P.L. 1961. Synopsis of the medusae of the World. J. Mar. Biol. Assoc. U.K. 40: 1-469. https://doi.org/10.1017/S0025315400007347

Kramp P.L. 1968. The Hydromedusae of the Pacific and Indian oceans. Sections II and III. Carlsberg Foundation, Copenhagen, 200 pp.

Mattox N.T., Crowell S. 1951. A new commensal hydroid of the mantle cavity of an oyster. The Biol. Bull. 101: 162-170. https://doi.org/10.2307/1538383

McCrady J. 1859. Gymnopthalmata of Charleston Harbor. Proc. Elliott Soc. Nat. Hist. 1: 103-221.

Mediseh S.D., Koochaknejad E., Dehmourdi L.M., et al. 2017. Jellyfish of Khuzestan coastal waters and their impact on fish larvae populations. Iran. J. Fish. Sci. 16: 422-430.

Morales-Ramírez A., Nowaczyk J. 2006. El zooplancton gelatinoso del Golfo Dulce, Pacífico de Costa Rica, durante la transición de la estación lluviosa a la seca 1997-1998. Rev. Biol. Trop. 54: 201-223.

Moura R.L., Amado-Filho G.M., Moraes F.C., et al. 2016. An extensive reef system at the Amazon River mouth. Sci. Adv. 2: 1-11.

Narchi W., Hebling N.J. 1975. The life cycle of the commensal hydromedusa Eutima sapinhoa n. sp. Mar. Biol. 30: 73-78. https://doi.org/10.1007/BF00393755

Pagès F., Gili J.-M., Bouillon J. 1992. Medusae (Hydrozoa, Scyphozoa, Cubozoa) of the Benguela Current (Southeastern Atlantic). Sci. Mar. 56(Suppl. 1): 1-64.

Russell F.S. 1953. The Medusae of the British Isles. Cambridge University Press, London, 530 pp.

Santhakumari V. 1970. The life cycle of Eutima commensalis n. sp. (Eutimidae, Hydromedusae). Mar. Biol. 5: 113-118. https://doi.org/10.1007/BF00352594

Schuchert P. 2017. Systematic notes on some leptomedusa species with a description of Neotima galeai n. spec. (Hydrozoa, Cnidaria). Rev. Suisse Zool. 124: 351-375.

Schuchert P. 2020. World Hydrozoa Database. Available from: http://www.marinespecies.org

Silva Junior O.M., Magrini A. 2014. Exploração de Hidrocarbonetos na Foz do Rio Amazonas: Perspectivas de Impactos Ambietais no Âmbito das Áreas Ofertadas na 11o Rodada de Licitações da Agência Nacional do Petroléo. Rev. Geoamazônia 2: 146-158. https://doi.org/10.17551/2358-1778/geoamazonia.v2n4p146-158

Tosetto E.G., Neumann-Leitão S., Nogueira Júnior M. 2019. Sampling planktonic cnidarians with paired nets: Implications of mesh size on community structure and abundance. Estuar. Coast. Shelf Sci. 220: 48-53. https://doi.org/10.1016/j.ecss.2019.02.027

Uchida T. 1964. Some medusae from New Caledonia. Publ. SMBL. 12: 109-112. https://doi.org/10.5134/175348

Vannucci M., Santhakumari V. 1969. New records of hydromedusae from the shelf area off the Kerala Coast. J. Mar. Biol. Ass. India 11: 40-43.

Wang C., Huang J., Xu Z., et al. 2013. One new species and one new record species of Eirenidae form the Taiwan Strait. Acta Zootaxonomica Sin. 38: 762-764.

Xu Z., Huang J. 1983. On the Hydromedusae, Siphonophora, Scyphomedusae and Ctenophora from the Jiulong River Estuary of Fujian, China. Taiwan Strait 2: 99-110.

Published

2020-12-11

How to Cite

1.
Giachini Tosetto E, Neumann-Leitão S, Nogueira Júnior M. New species of Eirenidae (Hydrozoa: Leptothecata) from the Amazonian coast (northern Brazil). scimar [Internet]. 2020Dec.11 [cited 2021Apr.22];84(4):421-30. Available from: http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1879

Issue

Section

Articles