Abstract
Two new species of deep-sea Tanaidacea (Aremus islandica n. sp. and A. brasilica n. sp.) were collected in the SW and N Atlantic during the scientific cruises organized within the HABITATS and IceAGE (Icelandic Animals Genetic and Ecology) initiatives in 2009 and 2011, respectively. Both species fit well to the current definition of Typhlotanaidae, but differ from the other members of the family by the striking feature of absence of the pleopods (one pair of pinnate setae on each pleonite ventrally), therefore they were accommodated to the newly erected genus – Aremus n. gen.; the new genus lacks the prickly tubercles on the carpus of pereopods 4–6, although it has three distinct serrated spines that makes it similar to four typhlotanaid genera, namely: Meromonakantha, Paratyphlotanais, Hamatipeda and Obesutanais. However, the morphology of the body does not correspond to the typical Meromonakantha neither to short body of Obesutanais. Furthermore Paratyphlotanais and Hamatipeda differ from the new genus on the spines form, in which the first one has long serrated spines and the second has hook-like spines. Both new species can be distinguished by (1) length of the ventrodistal seta on cheliped carpus, (2) length of dorsodistal seta on carpus of pereopods 1–3 and (3) length of the uropodal endopod. The systematics of the typhlotanaids without prickly tubercles on the pereopods 4–6 is briefly discussed.
Similar content being viewed by others
References
Anderson G, Bird G (2017) Tanaidomorpha. In: Bamber RN, El Nagar A, Arango C. (eds) (2017). Pycnobase: World Pycnogonida Database. World Register of Marine Species. http://www.marinespecies.org/aphia.php?p=taxdetails&id=136152 on 2018–01-12. Accessed 12 December 2018
Anderson G, Błażewicz M (2014) Tanaidacea. In: Bamber RN, El Nagar A, Arango C (eds) (2017) Pycnobase: World Pycnogonida Database. World Register of Marine Species. http://www.marinespecies.org/aphia.php?p=taxdetails&id=1133 on 2018–01-12. Accessed 12 December 2018
Araújo-Silva CL, Larsen K (2012) Tanaidacea (Tanaidacea: Crustacea) from Brazil IV. A new genus and two new species from the family Leptocheliidae, Zootaxa 3523, pp. 1–19:2–3
Bamber RN (2008) Tanaidaceans (Crustacea: Peracarida: Tanaidacea) from Moreton Bay, Queensland. In: Davie PJF, JA Phillips (eds), Proceedings Of The Thirteenth International Marine Biological Workshop, The Marine Fauna and Flora of Moreton Bay, Queensland. Memoirs of the Queensland Museum - Nature 54(1):143–217
Bamber RN, Sheader M (2003) A reinterpretation of the taxonomy and zoogeography of Pakistanapseudes and Swireapseudes (Crustacea: Tanaidacea): Hong Kong taxa in the world context. In: Morton B (ed) Perspectives on Marine Environment Change in Hong Kong and Southern China, 1977–2001. Proceedings of an International Workshop Reunion Conference, Hong Kong 21–26 October, 2001. Hong Kong University Press, 2003, Hong Kong, pp 167–194
Bird G (2004) The Tanaidacea (Crustacea, Peracarida) of the NorthEast Atlantic: the shelf and bathyal Paratyphlotanais of the ‘Atlantic margin’. J Nat Hist 38:1359–1384
Bird GJ, Larsen K (2009) Tanaidacean phylogeny – the second step: the basal paratanaoidean families (Crustacea: Malacostraca). Arthropod Syst Phylo 67:137–158
Błażewicz-Paszkowycz M (2007) A revision of the family Typhlotanaidae Sieg, 1984 (Crustacea: Tanaidacea) with the remarks on the Nototanaidae Sieg, 1976. Zootaxa 1958:1–141
Błażewicz-Paszkowycz M, Bamber RN, Anderson G (2012) Diversity of Tanaidacea (Crustacea: Peracarida) in the world's oceans – how far have we come? PLoS One 7(4):e33068
Błażewicz-Paszkowycz M, Pabis K, Jóźwiak P (2014) Tanaidacean Fauna of the Kuril–Kamchatka trench and adjacent abyssal plain–abundance, diversity and rare species. Deep-Sea Res Pt II 111:325–332
Brix S, Svavarsson J, Leese F (2014) A multi-gene analysis reveals multiple highly divergent lineages of the isopod Chelator insignis (Hansen, 1916) south of Iceland. Pol Polar Res 35(2):225–242
da Silva Brum IN (1971) Apseudes paulensis nova espécie de Tanaidacea do litoral Brasileiro (Crustacea). Arquivos do Museu Nacional, Rio de Janeiro 54:9–14
Franco NB, Rizzo AE (2016) Nephtyidae (Annelida: Polychaeta) from the Campos Basin, including two new species and a new record. Zootaxa 4114(3):291–308
Guţu M (1996) Tanaidaceans (Crustacea, Peracarida) from Brazil, with description of new taxa and systematical remarks on some families. Travaux du Muséum National d’Histoire naturelle. Grigore Antipa 36:23–133
Guţu M (1998) Malacostraca - Peracarida. Tanaidacea. In: Young PS (ed) Catalogue of Crustacea of Brazil. Rio de Janeiro: Museu Nacional. pp. 549–557. (Série Livros n. 6)
Kudinova-Pasternak RK, Pasternak FA (1978) Deep-sea Tanaidacea (Crustacea, malacostraca) collected in the Caribbean Sea and Puerto-Rico trench during the 16-th cruise of R/V “Akademic Kurchatov” and the resemblance between fauna of deep-sea Tanaidacea of the Caribbean region and the Pacific. Tr Inst Okeanol 113:178–197
Lang K (1949) Contribution to the systematics and synonymics of the Tanaidacea. Ark Zool Ser 1 42(18):1–14
Larsen K, Wilson GDF (2002) Tanaidacean phylogeny, the first step: the superfamily Paratanaidoidea. J Zool Syst Evol Res 40(4):205–222
Larsen K, Błażewicz-Paszkowycz M, Cunha MR (2006) Tanaidacean (Crustacea: Peracarida) Fauna from chemically reduced habitats- the lucky strike hydrothermal vent system, mid-atlantic ridge. Zootaxa 1187:1–36
Obenchain FD, Galun R (1982) Physiology of ticks. Pergamon Press, Oxford, p 509
Santos KC, Hansknecht T (2007) Taraxapseudes n.gen., Taraxapseudes diversus (Lang, 1968) n.comb. and two new species of Atlantapseudes Bacescu, 1978 (Tanaidacea: Apseudidae) from Brazil and Madagascar, with a key for the genus. Zootaxa 1639:23–39
Santos KC, Santana W, Pires-Vanin AMS (2012) Postispinatus youngi n. gen., n. sp. (Apseudomorpha; Tanaidacea; Crustacea): phylogenetic analysis and taxonomic remarks about kalliapseudids. Zootaxa 3192:24–38
Sars GO (1882) Revision af gruppen: Isopoda Chelifera med charakteristik af nye herhen horende arter og slagter. Arch Math Naturvidenskab 7:1–54
Sieg J (1976) Zum natürlichen System der Dikonophora Lang (Crustacea, Tanaidacea). Z Zool Syst Evol 14:177–198
Sieg J (1980) Sind die Dikonophora eine polyphyletische Gruppe? Zool Anz 205(5–6):401–416
Sieg J (1983) Tanaidomorpha (Crustacea: Tanaidacea) from the Ross Sea, Antarctica. J Roy Soc New Zeal 13(4):395–418
Sieg J (1984) Neuere Erkenntnisse zum natürlichen System der Tanaidacea. Eine phylogenetische Studie. Zoologica (Stuttgart) 136:1–132
Sieg J (1986) Tanaidacea (Crustacea) von der Antarktis und Subantarktis. II. Tanaidacea gesammelt von Dr. J.W. Wägele während der Deutschen Antarktis Expedition 1983. Mitt Zool Mus Uni Kiel 2:1–80
Acknowledgements
We appreciate Captain Michael Schneider, the crew of R/V Meteor and the scientists participating in IceAGE Program as well as pickers and sorters for their valuable help on and off board. The authors would also like to thank the Petrobras Company, which coordinated the fieldwork and made the material from Brazil available; to Dr. David Drumm for English revision; and to M.Sc. Maria Isabel Sarvat de Figueiredo for the assistance with photos.
Funding
This study was funded by National Science Center (grant No. 2014/13/B/NZ8/0402) and CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (grant No. 88881.133638/2016-01).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Ethical approval
All applicable international, national, and/or institutional guidelines for the care and use of animals were followed by the authors.
Field study
Permits and approval of field or observational studies have been obtained by the authors.
Additional information
Communicated by A. Jazdzewska
This article is registered in ZooBank under urn:lsid:zoobank.org:pub:88B0F7EB-DC5B-43B9-9150-EA04677EBBBF
Rights and permissions
About this article
Cite this article
Segadilha, J.L., Gellert, M. & Błażewicz, M. A new genus of Tanaidacea (Peracarida, Typhlotanaidae) from the Atlantic slope. Mar Biodiv 48, 915–925 (2018). https://doi.org/10.1007/s12526-018-0856-y
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12526-018-0856-y