Tanaidacea (Crustacea) of the north-east Atlantic: the subfamily Pseudotanainae (Pseudotanaidae) and the family Nototanaidae

Bird, Graham J.; Holdich, D. M.

doi:10.1111/j.1096-3642.1989.tb00548.x

Cited by 21 publications

(44 citation statements)

References 18 publications

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“…Pseudotanaididae appears to be a fairly stable family, despite concerns stated by Bird and Holdich (1989) and by the lack of unifying characters. The logic behind establishing two subfamilies (Pseudotanaidinae and Cryptocopinae) has merit owing to a higher Bremer support value for the individual clades.…”

Section: Discussionmentioning

confidence: 93%

“…Number of ventral setae on cheliped fixed finger ( Bird and Holdich 1989 ; 0=multiple setae, 1=three setae, 2=two setae, 3=one seta, 4=no setae). Several authors use this character for species identification and it seems to be fairly consistent within the genera, according to the literature.…”

Section: Characters Previously Attributed Systematic Importancementioning

confidence: 99%

“…Maxilliped endites not fused, either smooth or with three flat setae. Marsupium (where known) with one or possibly four (Bird and Holdich 1989: p. 234) pairs of oostegites. Pereopod 4–6 dactylus and terminal setae not fused to a hook.…”

Section: Pseudotanaididae Sieg 1976mentioning

confidence: 99%

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Tanaidacean phylogeny, the first step: the superfamily Paratanaidoidea

Larsen

Wilson

2002

J Zoological System

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This paper addresses the phylogeny of the superfamily Paratanaidoidea using computer‐assisted parsimony methods. Our morphologically based, empirical analysis uses exemplar species from all families and most genera in the superfamily. Species of Apseudomorpha, Neotanaidomorpha and Tanaidoidea were employed as out‐groups. The analysis supports most of the older systematics, including the monophyly of Paratanaididae, Leptocheliidae (in part), Nototanaididae, Pseudotanaididae and Pseudozeuxidae (excluding Heterotanaoides ). The analysis does not support the monophyly of Typhlotanaididae and Anarthruridae and suggests that both families be split up. The core genera of Typhlotanaididae are combined with the Nototanaididae under the name Nototanaididae. Other genera of Typhlotanaididae are left without family designation. Anarthruridae is divided into five families, Agathotanaididae, Anarthruridae, Leptognathiidae, Tanaellidae fam. nov. and Colletteidae fam. nov., but a large part of the anarthrurid genera could not be designated to families. The Leptocheliidae could neither be rejected nor verified but a subfamilial division (Heterotanaidinae subfam. nov. and Leptocheliinae) seems appropriate. A new proposal for the higher‐level taxonomy of the Paratanaidoidea is presented. Many tanaidacean names have been corrected to make them agree with the presumed Latin stem ‘tanaid‐’.

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Section: Discussionmentioning

confidence: 93%

Section: Characters Previously Attributed Systematic Importancementioning

confidence: 99%

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Tanaidacean phylogeny, the first step: the superfamily Paratanaidoidea

Larsen

Wilson

2002

J Zoological System

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“…Data from the BIOICE project has greatly expanded our knowledge of the benthic invertebrates in this region, their taxonomy, distribution and diversity (e.g. Bird and Holdich 1989;Svavarsson 1997;Weisshappel and Svavarsson 1998;Schu− chert 2000Schu− chert , 2001Weisshappel 2000Weisshappel , 2001Sigvaldadóttir 2002;Parapar 2003Parapar , 2006Bird 2004a,b;Stransky and Svavarsson 2006;Brix and Svavarsson 2010; Moreira and Parapar 2012;Dauvin et al 2012;Parapar et al 2012;Meißner et al 2014;Schnurr et al 2014). The BIOICE project has also benefitted ecological knowledge (e.g.…”

mentioning

confidence: 99%

Preface

Brix¹,

Meißner²,

Stransky³

et al. 2014

Polish Polar Research

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The Nordic Seas, i.e. the Greenland, Iceland and Norwegian Seas (GIN Seas), and the northernmost part of the North Atlantic Ocean, are characterized by sev− eral local peculiarities like submarine ridges (geographical barriers) and influence of water masses of different origin. The large Greenland−Iceland−Faeroe subma− rine ridge (GIF Ridge) has its deepest saddle depth of 840 m in the Faeroe Channel ( Fig. 1) and separates the deep Arctic and Nordic Seas from the deep North Atlan− tic Ocean. Accordingly, the ecological conditions are different between these re− gions, and there is a sharp temperature gradient across the ridge. Because of these geological and oceanographic characteristics, the marine environment around Ice− land is the confluence of three very different marine environments, namely the bo− real, subarctic and Arctic zones. The resultant intersection of these zones provides interesting possibilities for biological research. More specifically, the confluence of ridge systems and oceanographic water masses around Iceland allows an un− precedented opportunity to assess how ecology and evolution are shaped by physi− cal characteristics in marine systems.Knowledge of benthic organisms in Icelandic waters stems from the remark− able Danish Ingolf expedition (Wandel 1899) which explored waters around the Faeroe Islands, Iceland and Greenland during four months each year in 1895 and 1896. This effort was the first large−scale, scientific, benthic exploration in the region. During these expeditions a fine mesh was for the first time used in the sampling gear to separate the smaller benthic invertebrates from the sediments, leading to discovery of many small, unknown isopod, tanaidacean and cumacean species (see Hansen 1913Hansen , 1916Hansen , 1920. Outcomes from these expeditions in− cluded large monographs on various invertebrates in the series The Danish Ingolf

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“…The number of sternal setae on cheliped fixed finger (species-level character: Bird & Holdich, 1989: Bird & Holdich, 1988: 1598 also increase in number from manca to adult but do not change further with age. Uropod articles (family-level character: Lang, 1973: 223) are not fully separated until maturity and the exopod articles separate last or not at all.…”

Section: Discussionmentioning

confidence: 99%

Morphological and molecular investigation of polymorphism and cryptic species in tanaid crustaceans: implications for tanaid systematics and biodiversity estimates

Larsen

2001

Zoological Journal of the Linnean Society

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A combination of traditional taxonomic procedures and molecular techniques has provided new insight into the problems of cryptic species and sexual and ontogenetic polymorphism in the Tanaidacea. Using polymerase chain reaction and DNA markers, three cryptic species of Paratanais were identified. PCR primers were used to amplify the divergent internal transcribed spacers (ITS) of these species. Restriction digestion of the amplified rDNA generated species specific DNA banding. Male and five female stages of Paratanais maleficus sp. nov. and two other new species, I? malignus and €? perturbatius, are described. Morphological variation, both sexual and ontogenetic, was found in several generic characters of Paratanais and required the diagnosis to be modified. The identification of three undescribed cryptic species from a single microhabitat in a well studied, shallow water and easily accessible locality, demonstrate that the biodiversity of tanaid crustacean is significantly underestimated.

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Tanaidacea (Crustacea) of the north-east Atlantic: the subfamily Pseudotanainae (Pseudotanaidae) and the family Nototanaidae

Cited by 21 publications

References 18 publications

Tanaidacean phylogeny, the first step: the superfamily Paratanaidoidea

Tanaidacean phylogeny, the first step: the superfamily Paratanaidoidea

Preface

Morphological and molecular investigation of polymorphism and cryptic species in tanaid crustaceans: implications for tanaid systematics and biodiversity estimates

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