Ecological adaptations and commensal evolution of the Polynoidae (Polychaeta) in the Southwest Indian Ocean Ridge: A phylogenetic approach

2017 ◽  
Vol 137 ◽  
pp. 273-281 ◽  
Author(s):  
Natalia Serpetti ◽  
M.L. Taylor ◽  
D. Brennan ◽  
D.H. Green ◽  
A.D. Rogers ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Southwest Indian Ocean ◽  
Ecological Adaptations ◽  
Ocean Ridge

A discussion concerning the floor of the northwest Indian Ocean - Physciography of the Indian Ocean

1966 ◽  
Vol 259 (1099) ◽  
pp. 137-149 ◽  
Keyword(s):  
Indian Ocean ◽  
Arabian Sea ◽  
Polar Front ◽  
Mountain Range ◽  
Gangetic Plain ◽  
Southwest Indian Ocean ◽  
Oceanic Ridge ◽  
The Indian Ocean ◽  
Lateral Displacements ◽  
Ocean Ridge

As a result of the International Indian Ocean Expedition, the bottom of the Indian Ocean is now one of the best known areas of the ocean floor. The Mid-Indian Ocean Ridge, a rugged mountain range, lies in the centre of the Indian Ocean. North-northeast trending fractures offset the axis of the ridge. In the Arabian Sea these fractures are right lateral; in the southwest Indian Ocean they are left lateral. Displacements range from a few miles* to over 200 miles. The northeast Arabian Sea and the Bay of Bengal are occupied by huge abyssal cones built by sediments discharged from the Indo-Gangetic plain. Extensive abyssal plains lie seaward of the abyssal cones. In low latitudes smooth topography is characteristic of the continental rise, the abyssal cones, and the oceanic rises. However, near the polar front smooth c swale9 topography laps over the normally rugged Mid-Oceanic Ridge. This c swale5 smoothing appears the result of the higher organic productivity of the Antarctic seas. Microcontinents, mostly linear meridional ridges, are unique features of the Indian Ocean. These massive but smooth-surfaced blocks contrast markedly with the broad rugged Mid-Oceanic Ridge.

Branchinotogluma bipapillata n. sp., a new branchiate scale worm (Annelida: Polynoidae) from two hydrothermal fields on the Southwest Indian Ridge

Zootaxa ◽  
2018 ◽  
Vol 4482 (3) ◽  
pp. 527 ◽  
Author(s):  
YADONG ZHOU ◽  
YUEYUN WANG ◽  
DONGSHENG ZHANG ◽  
CHUNSHENG WANG
Keyword(s):  
New Species ◽  
Sexual Dimorphism ◽  
Indian Ocean ◽  
Hydrothermal Vent ◽  
Southwest Indian Ridge ◽  
Southwest Indian Ocean ◽  
Male And Female ◽  
Ocean Ridge ◽  
Hydrothermal Fields ◽  
A New Species

A new species of Branchinotogluma, found at two hydrothermal vent fields on Southwest Indian Ocean Ridge, is described herein. It can be distinguished from its congeners by the small acicular lobe on the tentacular segment, the stout smooth notochaetae, 5 pairs of dorsal and ventral papillae surrounding the pharynx, 2 pairs of long ventral papillae and 4 pairs of ventral lamellae on males, and modified parapodia on posterior segments. Sexual dimorphism is also reported in the new species, as male and female individuals display differences in characters on the ventral papillae and posterior segments. 

Description of a new branchiate scale-worm (Polychaeta: Polynoidae) from the hydrothermal vent on Southwest Indian Ocean Ridge

Zootaxa ◽  
2017 ◽  
Vol 4282 (1) ◽  
pp. 123 ◽  
Author(s):  
YADONG ZHOU ◽  
DONGSHENG ZHANG ◽  
BO LU ◽  
CHUNSHENG WANG
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Hydrothermal Vent ◽  
Southwest Indian Ocean ◽  
Manned Submersible ◽  
Ocean Ridge ◽  
A New Species

During the Dive90 and Dive94 of Chinese manned submersible “Jiaolong”, some polychaete specimens were collected from the “Longqi” vent field on the Southwest Indian Ocean Ridge. A new species belonging to the genus Branchipolynoe, Branchipolynoe longqiensis n. sp., is described in this study. It can be easily distinguished from congeners by its biramous parapodia with relatively reduced notopodia, stout notosetae and branchiae with short terminal filaments. 

Two bathyal hydroids (Hydrozoa: Leptothecata) from the Southwest Indian Ocean

Zootaxa ◽  
2017 ◽  
Vol 4247 (3) ◽  
pp. 336
Author(s):  
JEANETTE E. WATSON
Keyword(s):  
Indian Ocean ◽  
Southern Indian Ocean ◽  
Southwest Indian Ocean ◽  
James Cook ◽  
Research Ship ◽  
Ocean Ridge

Two species of hydroids were recovered from a mooring rope and experimentally deployed whale bone attached to an underwater transponder buoy at a depth of 732 m on the Coral Seamount on the Southwest Indian Ocean Ridge (41° 22.31’S, 54° 57’E) in the Southern Indian Ocean. The material was collected approximately 1,500 km south south-east of Madagascar during Voyage JC066 of the British Royal Research Ship R.R.S. James Cook on 20/11/2011. Hydroids were collected from the mooring rope and whale bone on board the ship after underwater retrieval by ROV. 

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