A new kinorhynch genus, Mixtophyes (Kinorhyncha: Homalorhagida), from the Guinea Basin deep-sea, with new data on the family Neocentrophyidae

Sánchez, Nuria; Pardos, Fernando; Sørensen, Martin V.

doi:10.1007/s10152-014-0383-6

Cited by 24 publications

(23 citation statements)

References 19 publications

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“…Cristaphyes abyssorum (5766 m) and Condyloderes kurilensis (5222 m) from the Kuril-Kamchatka Trench Maiorova 2015, 2016); Cristaphyes nubilis, Krakenella farinellii (Sánchez et al 2014a) and Mixtophyes abyssalis (Sánchez et al 2014b), collected from the Guinea Basin (5136-5174 m), and, finally, Campyloderes cf. vanhöffeni recorded in the Canary Islands (5055, 5102 and 5118 m) and also in the Guinea Basin (5064 m) (Neuhaus and Sørenson 2013).…”

Section: Metazoan Meiofaunamentioning

confidence: 99%

Characteristics of meiofauna in extreme marine ecosystems: a review

et al. 2017

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Extreme marine environments cover more than 50% of the Earth's surface and offer many opportunities for investigating the biological responses and adaptations of organisms to stressful life conditions. Extreme marine environments are sometimes associated with ephemeral and unstable ecosystems, but can host abundant, often endemic and welladapted meiofaunal species. In this review, we present an integrated view of the biodiversity, ecology and physiological responses of marine meiofauna inhabiting several extreme marine environments (mangroves, submarine caves, Polar ecosystems, hypersaline areas, hypoxic/anoxic environments, hydrothermal vents, cold seeps, carcasses/sunken woods, deep-sea canyons, deep hypersaline anoxic basins [DHABs] and hadal zones). Foraminiferans, nematodes and copepods are abundant in almost all of these habitats and are dominant in deep-sea ecosystems. The presence and dominance of some other taxa that are normally less common may be typical of certain extreme conditions. Kinorhynchs are particularly well adapted to cold seeps and other environments that experience drastic changes in salinity, rotifers are well represented in polar ecosystems and loriciferans seem to be the only metazoan able to survive multiple stressors in DHABs. As well as natural processes, human activities may generate stressful conditions, including deoxygenation, acidification and rises in temperature. The behaviour and physiology of different meiofaunal taxa, such as some foraminiferans, nematode and copepod species, can provide vital information on how organisms may respond to these challenges and can provide a warning signal of anthropogenic impacts. From an evolutionary perspective, the discovery of new meiofauna taxa from extreme environments very often sheds light on phylogenetic relationships, while understanding how meiofaunal organisms are able to survive or even flourish in these conditions can explain evolutionary pathways. Finally, there are multiple potential economic benefits to be gained from ecological, biological, physiological and evolutionary studies of meiofauna in extreme environments. Despite all the advantages offered by meiofauna studies from extreme environments, there is still an urgent need to foster meiofauna research in terms of composition, ecology, biology and physiology focusing on extreme environments.

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Section: Metazoan Meiofaunamentioning

confidence: 99%

Characteristics of meiofauna in extreme marine ecosystems: a review

et al. 2017

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“…Apart from their internal organs, males usually differ from females by the presence of penile spines on segment 11 and two large ventral tubes on segment 2 (Higgins 1983;Zelinka 1928). However, the latter character is not always present (Neuhaus 2013;Sánchez et al 2014a). Until now, the lack of this pair of ventral tubes has been reported in the description of five species only (Higgins 1966(Higgins , 1983Lang 1953;Sánchez et al 2011).…”

Section: Introductionmentioning

confidence: 88%

“…Terminology related to seta distribution for homalorhagids follows the standardization criteria established by Sánchez et al (2011) and adopted by all authors (Herranz et al 2014;Sánchez et al 2013Sánchez et al , 2014aSørensen et al 2010;Yamasaki et al 2012), except Neuhaus (2013.…”

Section: Methodsmentioning

confidence: 99%

“…It was recorded at 5,136 to 5,174 m depth in the Guinea Basin. The discovery also prompted the description of the new homalorhagid genus Mixtophyes, the latest homalorhagid genus described (Sánchez et al 2014a). The only other identified kinorhynch from abyssal depths is Campyloderes cf.…”

Section: Introductionmentioning

confidence: 98%

“…Among the homalorhagid genera, Pycnophyes is the most species-rich so far, with 54 described species (Neuhaus 2013;Sánchez et al 2013Sánchez et al , 2014aSørensen 2013). Pycnophyes species are characterized by having one tergal and three sternal plates on segment 1, one tergal and two sternal plates on segments 2-11, and one pair of lateral terminal spines on segment 11 (Higgins 1983;Sørensen and Pardos 2008;Zelinka 1928).…”

Section: Introductionmentioning

confidence: 98%

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Deep-sea Kinorhyncha: two new species from the Guinea Basin, with evaluation of an unusual male feature

2014

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Two new species of homalorhagid kinorhynchs from the deep-sea Guinea Basin are described. Pycnophyes nubilis sp. nov. is easily recognized by the presence of paradorsal setae on segment 1; middorsal processes on segments 1-10, progressively increasing in length towards the posterior segments; and middorsal process on segment 10 extending over the last trunk segment. Pycnophyes farinellii sp. nov. is distinguished by middorsal elevations on segments 2-9 and laterodorsal and ventromedial setae on segments 2 and 9 only. Moreover, males of the latter species lack ventromedial tubes on segment 2-a very uncommon feature among the genus. The systematic significance of this character is discussed in detail.

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Diversity of Kinorhyncha in Japan and Phylogenetic Relationships of the Phylum

Yamasaki

2016

Species Diversity of Animals in Japan

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A new kinorhynch genus, Mixtophyes (Kinorhyncha: Homalorhagida), from the Guinea Basin deep-sea, with new data on the family Neocentrophyidae

Cited by 24 publications

References 19 publications

Characteristics of meiofauna in extreme marine ecosystems: a review

Characteristics of meiofauna in extreme marine ecosystems: a review

Deep-sea Kinorhyncha: two new species from the Guinea Basin, with evaluation of an unusual male feature

Diversity of Kinorhyncha in Japan and Phylogenetic Relationships of the Phylum

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