New species of benthopelagic hydromedusae from the Weddell Sea

Bouillon, Jean; Pagès, Francesc; Gili, Josep-Marı́a

doi:10.1007/978-3-642-59419-9_2

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…The statocysts have 5-7 statoliths in each cluster ( Figure 1B). They appear to be similar to the "closed" marginal sensory clubs found in Sigiweddellia benthopelagica (Cuninidae; Bouillon et al 2001), but it is unclear based on their drawings and description. In Bathykorus bouilloni the hanging statocysts are not found within distinct pockets in the ectoderm, as is seen in S. benthopelagica.…”

Section: Bathykorus Bouilloni Sp Novmentioning

confidence: 72%

“…Narcomedusae has 13 commonly observed genera, with upwards of 45 species described, including several recently added genera and species (Xu & Zhang 1978;Arai et al 2000;Bouillon et al 2001;Bouillon et al 2006;Collins et al 2006a;Fuentes & Pagès 2006;Schuchert 2009). As was noted by Fuentes & Pagès (2006), virtually all new species to the family Aeginidae have required the creation of new genera, showing the description of diversity of the Aeginidae has been mainly at the generic level, not at the species level.…”

Section: Introductionmentioning

confidence: 99%

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Bathykorus bouilloni: a new genus and species of deep-sea jellyfish from the Arctic Ocean (Hydrozoa, Narcomedusae, Aeginidae)

Raskoff

2010

Zootaxa

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A new genus and species of a common deep-water narcomedusa is described from the Arctic Ocean. The species has four primary tentacles, four secondary tentacles, with three interradial manubrial pouches in each quadrant. A revision and taxonomic key of the family Aeginidae is presented to account for the new genus. Detailed information on its finescale vertical and horizontal distributions show that it occurs in a fairly narrow depth range between 1400-2000 meters. The species was observed 423 times at eleven stations, demonstrating that new species can be common in the underexplored regions of the ocean.

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Section: Bathykorus Bouilloni Sp Novmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Bathykorus bouilloni: a new genus and species of deep-sea jellyfish from the Arctic Ocean (Hydrozoa, Narcomedusae, Aeginidae)

Raskoff

2010

Zootaxa

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“…The benthopelagic species Voragonema pedunculata (cf. Bouillon et al 2001) although found at great depths just above the sea floor, is also known to inhabit waters as shallow as 100 m off central California (Matsumoto et al 1997). Other deep-living hydromedusae off California are known to have distributions extending to shallower depths (Alvariño 1967;Thuesen 1993;Thuesen & Childress 1994;Purcell et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Untitled

2003

Zootaxa

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A new species of deep-sea jellyfish, Crossota millsae (Cnidaria: Hydrozoa: Trachymedusae: Rhopalonematidae), is described from the North Pacific Ocean off California and Hawaii. Discrete depth sampling showed this species lives at depths below 1000 meters in both geographic locations. The species is more abundant off California than off Hawaii. The greatest population densities were found at ~2500 m off California and at ~1250 m off Hawaii. The burnt-tangerine color of the inner bell and bright pink to lavender color of the ring and radial canals, manubrium and gonads make living specimens of this species difficult to confuse with any other known species of hydromedusa. Sexually dimorphic differences in gonad morphology are evident. The pendant testes contained spermatids at various stages of spermatogenesis as observed using scanning electron microscopy. Ova develop directly into small medusae that reside subumbrellarly between the radial canals of the mother. Various developmental stages of C. millsae are shown in photographs and terminology of brooding and viviparity is discussed relative to other Cnidaria.

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A review of bipolarity concepts: History and examples from Radiolaria and Medusozoa (Cnidaria)

Stepanjants

Cortese

Kruglikova

et al. 2006

Marine Biology Research

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Bipolarity, its history and general interpretation are investigated and discussed herein. Apart from the classical view, namely that a bipolar distribution is a peculiar biogeographical phenomenon, we propose that it is ecologically controlled too. This approach was used for bipolarity assessment within the following groups: Phaeodaria, Nassellaria, Spumellaria (Radiolaria) and Medusozoa (Cnidaria). We recognize 46 bipolar radiolarian species and three radiolarian genera. However, although species concepts in radiolarians are relatively stable and well known, the high-rank taxonomy of radiolarians is still not well defined. Caution should therefore be taken in the interpretation of distribution data at a taxonomic level higher than the species. In the Medusozoa, bipolarity is observed for 23 species and 32 genera. The different ways in which bipolarity can develop are discussed under the different groups, but preference has been given to the recent and most probable routes of migration. In our investigation of the bipolarity phenomenon, we reviewed more than 400 articles dealing with taxonomy, ecology and biogeography of the modern fauna in both groups.

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New species of benthopelagic hydromedusae from the Weddell Sea

Cited by 3 publications

References 13 publications

Bathykorus bouilloni: a new genus and species of deep-sea jellyfish from the Arctic Ocean (Hydrozoa, Narcomedusae, Aeginidae)

Bathykorus bouilloni: a new genus and species of deep-sea jellyfish from the Arctic Ocean (Hydrozoa, Narcomedusae, Aeginidae)

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A review of bipolarity concepts: History and examples from Radiolaria and Medusozoa (Cnidaria)

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