Bathypelagic Mysids from the Northeastern Pacific

Murano, Masaaki; Krygier, Earl E.

doi:10.2307/1548246

Cited by 5 publications

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“…It is remarkable for its long and unusual plumose antennules, looking like those of a moth. A careful observation revealed it belongs to a new species of the deepwater genus Bacescomysis Murano and Krygier, 1985 (family Petalophthalmidae, suborder Mysida), described herein.…”

Section: Introductionmentioning

confidence: 94%

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A new North‐East Atlantic species ofBacescomysis(Mysidacea, Crustacea) with original moth‐like antennules

Casanova¹,

Jong²

2005

Journal of Natural History

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A new Mysidacea, Bacescomysis papilio, with a unique, supernumerary complement of sensilla on the antennules, is described from the Porcupine Abyssal Plain (4848 m) in the North-East Atlantic.Comparisons are made with the species of Bacescomysis and of the related genus Hansenomysis. Biological and biogeographical remarks on these two genera are provided, i.e. role of antennule, adaptations to deep water, and correlations between depth range of species and latitude.

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Section: Introductionmentioning

confidence: 94%

“…The genus Bacescomysis has been separated from Hansenomysis Stebbing, 1893 by Murano and Krygier (1985). It differs from the latter in four main characteristics: (1) exopods of the uropods unsegmented;…”

Section: Etymologymentioning

confidence: 99%

A new North‐East Atlantic species ofBacescomysis(Mysidacea, Crustacea) with original moth‐like antennules

Casanova¹,

Jong²

2005

Journal of Natural History

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“…COMPOSITION: 36 species (Mauchline, 1980;Murano, Krygier, 1985;Saltzman, Bowman, 1993 LOCALITIES: Rockall Trough in stomachs of fish caught at depths of 500-2500 m (Mauchline, 1986).DISTRIBUTION: Arctic Ocean, Atlantic Ocean south to the Bay of Biscay and to 28°N in the west, the Mediterranean Sea, Pacific Ocean from the Bering Sea to Japan and California.…”

Section: Suborder Mysida Family Boreomysidae Genus Boreomysis Go Samentioning

confidence: 99%

“…DEPTH RANGE: 50 m (in Isfiord), 1230-4320 m. Holt et Tattersall, 1905 COMPOSITION: 5 species (Mauchline, Murano, 1977;Murano, Krygier, 1985;Murano, 2001). Type species: Dactylerythrops dactylops Holt et Tattersall, 1905. DISTRIBUTION: North Atlantic and North Pacific Oceans: Atlantic Ocean -3, Pacific Ocean -2.…”

Section: Dactylamblyops Atlanticus Murano Et Mauchline 1999mentioning

confidence: 99%

“…The expeditions on "Litke" (1955) and "Ob" (1956) worked in the Greenland Sea and adjacent areas of the Arctic Basin. In the more recent decades the biggest collections of mysids and lophogastrids at depths below 2000 m in the north-east Atlantic were obtained by French and British expeditions: POLYGAS (1972), BIOGAS 1-6 (1972-1974), INCAL (1976), "Discovery" (1978, 1984, 1985]. In the Arctic samples were taken by the Russian drifting-station "Severnyi Poljus-22" (1977) and the Russian-German expeditions on "Polarstern" (1991,1993,1995).…”

Section: Introductionmentioning

confidence: 99%

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Deep-sea fauna of European seas: An annotated species check-list of benthic invertebrates living deeper than 2000 m in the seas bordering Europe. Mysida, Lophogastrida

Petryashev

2014

Invertzool

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An annotated checklist is given of Mysida and Lophogastrida species occurring deeper than 2000 m in the seas bordering Europe. The checklist is based on published data. The checklist includes 35 species. For each species synonymy, data on localities in European seas and general species distribution are provided. Station data are presented separately in the present thematic issue. How to cite this article: Petryashov V.V. 2014. Deep-sea fauna of European seas: An annotated species checklist of benthic invertebrates living deeper than 2000 m in the seas bordering Europe. Mysida and Lophogastrida // Invert.

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First report of the order Mysida (Crustacea) in Antarctic marine ice caves, with description of a new species of Pseudomma and investigations on the taxonomy, morphology and life habits of Mysidetes species

Wittmann¹,

Chevaldonné²

2021

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SCUBA diving explorations of three islands off Dumont d’Urville Station at the coast of Adélie Land, East Antarctica, enabled the observation of marine ice caves. Sampling in this unusual habitat yielded a total of three species of Mysidae, altogether previously poorly known or unknown to science. Pseudomma kryotroglodytumsp. nov. is described, based on the structure of the antennal scale, telson and on cornea-like lateral portions set off against the main body of eyeplates. Mysidetes illigi is re-established at species level after almost a century in synonymy. Re-descriptions are provided for M. illigi and M. hanseni, based on types and ice cave materials. Keys to the Southern Ocean species of Pseudomma and to the world-wide species of Mysidetes are given. Phylogenetic trees are provided for the genera Pseudomma and Mysidetes. 18S rDNA sequences of P. kryotroglodytum differ from GenBank sequences of other Pseudomma species. First sequence data are given for species of the genus Mysidetes: 18S differs between the two examined species and COI is quite diverse between and within species. We found previously unknown, probably sensorial structures in these ice cave species: in P. kryotroglodytum, the basal segment of the antennula shows a pit-like depression with striated pad on the bottom and a median cyst, connected with the bottom of the eyeplate cleft. M. illigi shows a female homologue of the appendix masculina bearing a field of modified setae. Subsequent investigations demonstrated these structures also in species from other habitats. The feeding apparatus and stomach contents of the three ice cave species point to brushing of small particles (detritus, microalgae) from available surfaces, such as sediment, rock and the ice surface. Differences in the feeding apparatus are very subtle between the two Mysidetes species. The high content of fat bodies in M. hanseni could help it to survive periods of starvation. The large storage volume of the foregut in P. kryotroglodytum points to the collection of food with low nutritional quality and could help to balance strongly fluctuating food availability. Summer specimens of M. hanseni showed a bimodal frequency of developmental stages in the marsupium and bimodal size-frequency distribution of free-living stages. The females with younger brood (embryos) were, on average, larger and carried more marsupial young than those with older brood (nauplioid larvae). All examined incubating and spent females showed (almost) empty foreguts and empty ovarian tubes, suggesting possible semelparity and death following the release of young. The absence of juveniles and immature females from summer samples suggests that growth and accumulation of fat and yolk occur outside ice caves, while such caves could be used by fattened adults as shelter for brooding. A provisional interpretation proposes a biannual life cycle for M. hanseni, superimposed with shifted breeding schedules, the latter characterised by early breeding and late breeding females, probably in response to harsh physical and trophic conditions along the continental coast of Antarctica.

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Bathypelagic Mysids from the Northeastern Pacific

Cited by 5 publications

References 0 publications

A new North‐East Atlantic species ofBacescomysis(Mysidacea, Crustacea) with original moth‐like antennules

A new North‐East Atlantic species ofBacescomysis(Mysidacea, Crustacea) with original moth‐like antennules

Deep-sea fauna of European seas: An annotated species check-list of benthic invertebrates living deeper than 2000 m in the seas bordering Europe. Mysida, Lophogastrida

First report of the order Mysida (Crustacea) in Antarctic marine ice caves, with description of a new species of Pseudomma and investigations on the taxonomy, morphology and life habits of Mysidetes species

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Bathypelagic Mysids from the Northeastern Pacific

Cited by 5 publications

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A new North‐East Atlantic species ofBacescomysis(Mysidacea, Crustacea) with original moth‐like antennules

A new North‐East Atlantic species ofBacescomysis(Mysidacea, Crustacea) with original moth‐like antennules

Deep-sea fauna of European seas: An annotated species check-list of benthic invertebrates living deeper than 2000 m in the seas bordering Europe. Mysida, Lophogastrida

﻿First report of the order Mysida (Crustacea) in Antarctic marine ice caves, with description of a new species of Pseudomma and investigations on the taxonomy, morphology and life habits of Mysidetes species

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First report of the order Mysida (Crustacea) in Antarctic marine ice caves, with description of a new species of Pseudomma and investigations on the taxonomy, morphology and life habits of Mysidetes species