A new deep-water species of Metacrangon (Decapoda, Caridea, Crangonidae) from Japan

2010 ◽  
pp. 369-377
Keyword(s):  
Deep Water ◽  
Deep Water Species ◽  
Water Species

Bougainvillia aberrans (Cnidaria, Hydrozoa), a new species of hydroid and medusa from the upper bathyal zone off Bermuda

1993 ◽  
Vol 71 (5) ◽  
pp. 997-1002 ◽  
Author(s):  
Dale R. Calder
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
North Atlantic ◽  
Deep Water ◽  
North Atlantic Ocean ◽  
Deep Water Species ◽  
A New Species ◽  
Water Species

Bougainvillia aberrans n.sp. is described from Bermuda in the western North Atlantic Ocean. Specimens were collected at a depth of 150 fathoms (274 m) from the polypropylene buoy line of a crab trap. The hydroid colony of B. aberrans is erect, with a polysiphonic hydrocaulus, a smooth to somewhat wrinkled perisarc, hydranths having a maximum of about 16 tentacles, and medusa buds arising only from hydranth pedicels. Medusae liberated in the laboratory from these hydroids differ from all other known species of the genus in having a long, spindle-shaped manubrium, lacking oral tentacles, having marginal tentacles reduced to mere stubs, and being very short-lived (surviving for a few hours at most). Gonads develop in medusa buds while they are still attached to the hydroids, and gametes are shed either prior to liberation of the medusae or shortly thereafter. The eggs are surrounded by an envelope bearing nematocysts (heterotrichous microbasic euryteles). The cnidome of both hydroid and medusa stages consists of desmonemes and heterotrichous microbasic euryteles. The diagnosis of the genus Bougainvillia is modified to accommodate this new deep-water species.

A new deep-water palaemonid shrimp genus and species from the French Antilles, with a new record of Periclimenes milleri Bruce, 1986 (Decapoda: Caridea)

Zootaxa ◽  
2020 ◽  
Vol 4834 (3) ◽  
pp. 407-424
Author(s):  
ARTHUR ANKER ◽  
LAURE CORBARI
Keyword(s):  
Deep Water ◽  
Colour Pattern ◽  
Depth Range ◽  
New Genus And Species ◽  
Type Specimens ◽  
Western Atlantic ◽  
French Antilles ◽  
Deep Water Species ◽  
First Time ◽  
Water Species

A new genus and species in the caridean shrimp family Palaemonidae is described based on three type specimens collected at a depth range of 208–385 m off Guadeloupe, French Antilles. Zoukaris festivus gen. et sp. nov. shares many characters with several western Atlantic deep-water species currently assigned to Periclimenes Costa, 1844, as well as with the monotypic western Atlantic genus Diapontonia Bruce, 1986 and the Indo-West Pacific genus Echinopericlimenes Marin & Chan, 2014. Zoukaris gen. nov. can be separated from all of them by a unique combination of morphological features, especially the configuration of the dactylus of the ambulatory pereiopods. In addition, Periclimenes milleri Bruce, 1986 is recorded from the French Antilles based on a single specimen, also from Guadeloupe; its colour pattern is illustrated for the first time. 

Report on four deep-water barnacles (Cirripedia, Thoracica) from the north west Pacific, with remarks on Trianguloscalpellum regium (Wyville-Thomson, 1873)

Zootaxa ◽  
2019 ◽  
Vol 4565 (2) ◽  
pp. 201 ◽  
Author(s):  
ZHIBIN GAN ◽  
XINZHENG LI
Keyword(s):  
16S Rrna ◽  
Deep Water ◽  
Mariana Trench ◽  
North West ◽  
The North ◽  
Deep Water Species ◽  
First Time ◽  
Distribution Record ◽  
Water Species ◽  
New Distribution

Four deep-water species of stalked barnacles were collected by the manned submersibles Jiaolong and Shenhaiyongshi during recent expeditions. Trianguloscalpellum regium (Wyville-Thomson, 1873), collected from the Mariana Trench at a depth of 5,462 m, represents a new distribution record. Glyptelasma gigas (Annandale, 1916), Poecilasma litum Pilsbry, 1907 and Poecilasma obliqua Hoek, 1907, collected from the South China Sea, are recorded for the first time from a mud volcano environment. Detailed photographs of these four species are presented and their partial sequences of 16S rRNA and mt COI genes are provided. 

scholarly journals Observations on the reproductive cycle of the black scabbardfish (Aphanopus carbo Lowe, 1839) in the NE Atlantic

2003 ◽  
Vol 60 (4) ◽  
pp. 774-779 ◽  
Author(s):  
I Figueiredo ◽  
P Bordalo-Machado ◽  
S Reis ◽  
D Sena-Carvalho ◽  
T Blasdale ◽  
...  
Keyword(s):  
Reproductive Cycle ◽  
Deep Water ◽  
Microscopic Analysis ◽  
European Countries ◽  
Ne Atlantic ◽  
Spawning Period ◽  
Mainland Portugal ◽  
Deep Water Species ◽  
First Maturity ◽  
Water Species

Abstract Black scabbardfish is a deep-water species, common in the NE Atlantic at depths between 450 and 1300 m, currently exploited by some European countries. Between May 1998 and April 2000, specimens collected at three different locations in the NE Atlantic—NW of Scotland, Sesimbra (mainland Portugal) and Funchal (Madeira)—were analysed. The evolution of maturity of both sexes throughout the year was studied based on the macroscopic and microscopic analysis of the gonads. Specimens with the largest total length were found in Funchal, whereas the smallest size was recorded in the NW of Scotland. Neither spawners nor post-spawners were ever observed in NW of Scotland and Sesimbra. In Sesimbra, only a few individuals attained pre-spawning stage and most of the early developing females exhibited atresia in their ovaries. In Funchal, all the maturity stages were found; spawners occurred from September to December (females) and from August to December (males). Length of first maturity for females was estimated to be around 1000 mm. Two groups of spawners with different sizes were observed during the spawning period off Madeira.

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