ARTOO Marine Biology Consultants

Southampton, United Kingdom

ARTOO Marine Biology Consultants

Southampton, United Kingdom
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Apseudomorph tanaidaceans from recent samples of the South China Sea benthos off Brunei have been examined. The habitats were sandy substrata from between 5 and 90 m depth. Fourteen species of the four families considered here were discovered. A new species of Tanapseudes is described. The distribution of Phoxokalliapseudes gobinae is analyzed. Biropalostoma goofi is recorded for the first time in Brunei waters. One new species of the Apseudidae (in the genus Bunakenia) and four new species of the Parapseudidae (one each in the genera Platylicoa and Pakistanapeudes, and two in a new genus Actenos, of the subfamily Pakistanapseudinae) are described. The genus Platylicoa is moved to the Pakistanapseudinae, and the genus Hainanius is returned to the Parapseudidae (Parapseudinae). Apseudes tenuicorporeus is moved from Biropalostoma to the new pakistanapseudin genus described herein. Copyright © 2013 Magnolia Press.

Over the last 160 years, a possibly excessive number of species of the tanaidomorphan genus Leptochelia has been described based on its dimorphic males, followed by excessive synonymization to the point of suggesting one cosmopolitan speciescalled either L. dubia or L. savignyifor taxa in which the male cheliped is shorter than the body length. It has become apparent over the last 25 years that, in a genus with little dispersive capability, there are numerous, and often sympatric, species of Leptochelia worldwide, none of them cosmopolitan, and distinguished principally on adult female morphology, although that morphology is very conservative. To resolve the resulting confusion over attribution of northeast Atlantic populations to one or other of the earlier-described species, specimens from Madeira, the type locality of L. savignyi, have been analyzed in comparison with material from the western English Channel and northwest Spain. The species is confirmed as Leptochelia savignyi sensu stricto, which is fully redescribed, compared with currently understood sympatric species, and intraspecific and ontogenetic variation is discussed. © 2010 Biological Society of Washington.

Following recent revelations regarding males with subchelate chelipeds in the tanaidacean genus Parakonarus, a number of Australian leptocheliid taxa are re-assessed, and their males and females variously re-allocated. To assist the interpretation of taxa with subchelate males, Heterotanais anomalus Sars is redescribed based on material from the Balearic Islands. The males of Konarus are now known to have a subchelate cheliped. The male (only) of Pseudoleptochelia bulbus from Melanesia is re-assigned to Konarus cheiris, while Pseudoleptochelia bulbus sensu stricto is reassigned to Leptochelia together with its "minuta"-type male, as Leptochelia bulbus. Pseudoleptochelia straddi is re-assigned to Konarus, together with its females from Queensland, Australia, which were previously assigned to Konarus cheiris. Pseudoleptochelia fairgo is confirmed as a member of Parakonarus, but material from Queensland is re-described as a new species. Other species previously assigned to Pseudoleptochelia are re-assessed: P. inermis, P. mercantilis and P. mortenseni sensu stricto are transferred to Leptochelia. The "small females" and males of P. mortenseni are transferred to Parakonarus as a new species. P. antarctica is provisionally reverted to Heterotanais, P. mergellinae to Leptochelia, and P. filum is tentatively transferred to Pseudonototanais. Pseudoleptochelia magna is synonymized with P. anomala. Pseudoleptochelia provincialis is tentatively transferred to Parakonarus. Pseudoleptochelia occiporta (females only) is reassigned to Leptochelia; the male of P. occiporta is considered to represent a species of Parakonarus. Pseudoleptochelia juliae is reassigned to Parakonarus. Konarus, Makraleptochelia, Bassoleptochelia, Parakonarus and Pseudoleptochelia are placed in the new subfamily Konariinae. Generic relationships in this subfamily were confirmed by Principle Components Analysis. Catenarius is placed in the new subfamily Catenariinae. Copyright © 2013 Magnolia Press.

Deep-sea pycnogonid material collected during the N/O Alis Campagnes SalomonBOA 3 to the Solomon Islands in 2007, Terasses to New Caledonia in 2008, Tarasoc to the Tuamoto Archipelago and Tarava Seamounts in 2009, Biopapua to Papua New Guinea in 2010, and Exbodi to New Caledonia in 2011, has been analyzed. This includes the first collection of deep-sea pycnogonids from the waters of Papua New Guinea. The material includes 71 specimens from 14 species in seven genera. Most are frequently-recorded species of the genus Colossendeis, but there are also four species new to science, Ascorhynchus quartogibbus n. sp., Cilunculus roni n. sp., Phoxichilidium alis n. sp., Pycnogonum papua n. sp. A specimen from New Caledonia, identified by Stock in 1997 as Pycnogonum occa Loman, 1908, but not figured or described, has been re-examined, and found also to be a distinct species, Pycnogonum staplesi n. sp. © Publications Scientifiques du Muséum national d'Histoire naturelle, Paris.

Bamber R.N.,ARTOO Marine Biology Consultants | Blazewicz-Paszkowycz M.,University of Lodz
Journal of Natural History | Year: 2013

The shallow-water tanaidacean fauna of the Bass Strait has been the subject of recent intensive studies. The present paper extends this work into the deeper waters of the region, describing two new species and one new genus. The new species of the genus Paradoxapseudes has a combination of three maxillule palp setae, no plumose setae on the basis of pereopod 1 nor proximal serration on the antennal peduncle. The second species represents a new genus of the family Anarthruridae, having six marginal setae on the third maxilliped palp article and spines on the merus and carpus of the anterior pereopods. The high diversity of Tanaidacea in Australian waters is discussed. In particular, we conclude that Australian coasts suffer a diversity of immigration routes, have sufficient marine longevity, and afford such a diversity of available niches to have allowed multiple colonization and subsequent allopatric speciation of Tanaidacea. © 2013 Copyright Taylor and Francis Group, LLC.

Blazewicz-Paszkowycz M.,University of Lodz | Bamber R.,Artoo Marine Biology Consultants | Anderson G.,University of Southern Mississippi
PLoS ONE | Year: 2012

Tanaidaceans are small peracarid crustaceans which occur in all marine habitats, over the full range of depths, and rarely into fresh waters. Yet they have no obligate dispersive phase in their life-cycle. Populations are thus inevitably isolated, and allopatric speciation and high regional diversity are inevitable; cosmopolitan distributions are considered to be unlikely or non-existent. Options for passive dispersion are discussed. Tanaidaceans appear to have first evolved in shallow waters, the region of greatest diversification of the Apseudomorpha and some tanaidomorph families, while in deeper waters the apseudomorphs have subsequently evolved two or three distinct phyletic lines. The Neotanaidomorpha has evolved separately and diversified globally in deep waters, and the Tanaidomorpha has undergone the greatest evolution, diversification and adaptation, to the point where some of the deep-water taxa are recolonizing shallow waters. Analysis of their geographic distribution shows some level of regional isolation, but suffers from inclusion of polyphyletic taxa and a general lack of data, particularly for deep waters. It is concluded that the diversity of the tanaidomorphs in deeper waters and in certain ocean regions remains to be discovered; that the smaller taxa are largely understudied; and that numerous cryptic species remain to be distinguished. Thus the number of species currently recognized is likely to be an order of magnitude too low, and globally the Tanaidacea potentially rival the Amphipoda and Isopoda in diversity. © 2012 Blazewicz-Paszkowycz et al.

BLazewicz-Paszkowycz M.,University of Lodz | Bamber R.N.,Artoo Marine Biology Consultants | Jozwiak P.,University of Lodz
Deep-Sea Research Part II: Topical Studies in Oceanography | Year: 2013

Fifteen species of Tanaidacea, one apseudomorph and fourteen tanaidomorphs, are described from the collections of the SoJaBio Expedition from the slope and deeper waters of the Sea of Japan. Ten species are new to science: one in the genus Pseudosphyrapus, one in Tanaopsis, two in Akanthophoreus, one as a new genus in the family Colletteidae, one as a new genus in the family Anarthruridae, and four species of Pseudotanais. One species of the last family is represented by insufficient material for a full description and designation. Another species, probably in the genus Torquella, is not identified to species level owing to insufficient, poor condition material. Four species in the collection are recorded for only the second time, in two cases allowing valuable redescription of previously inadequately analyzed taxa. The list of Tanaidacea from the Russian coasts of the Sea of Japan, based on published records and the SoJaBio material, includes twenty taxa, although the identities of at least four of them are doubtful. © 2012 Elsevier Ltd.

Bamber R.N.,ARTOO Marine Biology Consultants
Journal of Natural History | Year: 2014

The tanaidid genus Sinelobus was long considered to be monotypic, comprising a cosmopolitan species, S. stanfordi, predominantly associated with restricted, largely hypohaline waters. Recent discoveries of distinct species of Sinelobus in Australia have prompted closer examination of material from localities remote from the Central American Pacific coast (the type-locality of S. stanfordi). Re-examination of material from the Netherlands (north-east Atlantic) and from Hong Kong (South China Sea) has resulted in the distinction of two new species, which are described herein. Problems with the familial nomenclature of this taxon have been identified, and the family name is corrected to Tanaididae. © 2014 © 2014 Taylor & Francis.

Bamber R.N.,ARTOO Marine Biology Consultants
Journal of the Marine Biological Association of the United Kingdom | Year: 2012

The Macaronesian Islands in the mid-Atlantic pose a number of questions relating to their colonization by littoral tanaidaceans, as these taxa have no obligate dispersive phase. Recent surveys of the four main archipelagos discovered twelve species of tanaidacean, four of which are new to science, in seven genera (one new to science). In addition, some taxa described by Vanhöffen at the beginning of the last century were rediscovered. All the taxa are described, and their zoogeography, likely origin, and possible means of colonization are discussed. © 2012 Marine Biological Association of the United Kingdom.

The tanaid genus Hexapleomera has long been considered to be monotypic, comprising a cosmopolitan species predominantly commensal on turtles, or, more rarely, manatees. Recent discovery of material of a distinct species of Hexapleomera living on the hulls of yachts in south-west England encouraged re-assessment of the literature on this taxon, and re-examination of free-living benthic material from the eastern Mediterranean. As a result, five species are recognized within the genus Hexapleomera; two new species are described, Pancoloides moverlyi is moved to Hexapleomera, and H. robusta sensu Edgar is elevated to specific rank and re-named. Copyright © 2012. Magnolia Press.

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