First records of two species of reef-associated mantis shrimps (Crustacea: Stomatopoda) from India

Zootaxa ◽  
2021 ◽  
Vol 5047 (5) ◽  
pp. 557-566
Author(s):  
VINAY P. PADATE ◽  
SHANE T. AHYONG ◽  
ALEESHA K. SHAJI ◽  
SHERINE SONIA CUBELIO ◽  
NARAYANANE SARAVANANE
Keyword(s):  
Bay Of Bengal ◽  
New Caledonia ◽  
Andaman Sea ◽  
Faunal Composition ◽  
Coastal Marine ◽  
Rich Diversity ◽  
Indian Waters ◽  
Oceanographic Research ◽  
A Chain ◽  
De Man

The coastal marine environments in the Indian Exclusive Economic Zone harbour a rich diversity of mantis shrimps. However, several regions have not been adequately surveyed for their stomatopod faunal composition. In this paper, we report the first records of two species, Gonodactylopsis drepanophora (de Man, 1902) and Cloridina malaccensis (Manning, 1968) from Indian waters. Samples were collected using a chain dredge deployed by the Fishery Oceanographic Research Vessel Sagar Sampada on the shallow reefs (53–56 m depths) of the Andaman Sea and Bay of Bengal during August–November 2019. Gonodactylopsis drepanophora was previously known only from Indonesia, and Cloridina malaccensis from Southeast Asia, New Caledonia and Madagascar.  

Energetics and spatio-temporal variability of semidiurnal internal tides in the Bay of Bengal and Andaman Sea

2020 ◽  
Vol 189 ◽  
pp. 102444
Author(s):  
A.K. Jithin ◽  
P.A. Francis ◽  
A.S. Unnikrishnan ◽  
S.S.V.S. Ramakrishna
Keyword(s):  
Bay Of Bengal ◽  
Temporal Variability ◽  
Internal Tides ◽  
Andaman Sea ◽  
Spatio Temporal

Description of Rhinobatos ranongensis sp. nov. (Rhinopristiformes: Rhinobatidae) from the Andaman Sea and Bay of Bengal with a review of its northern Indian Ocean congeners

Zootaxa ◽  
2019 ◽  
Vol 4576 (2) ◽  
pp. 257
Author(s):  
PETER R. LAST ◽  
BERNARD SÉRET ◽  
GAVIN J.P. NAYLOR
Keyword(s):  
Indian Ocean ◽  
Bay Of Bengal ◽  
Intraspecific Variability ◽  
Andaman Sea ◽  
Nominal Species ◽  
Northern Indian Ocean ◽  
Additional Material ◽  
Tissue Samples ◽  
New Material ◽  
Colour Morphs

A new species of guitarfish, Rhinobatos ranongensis sp. nov., is described from 5 preserved specimens, and images and tissue samples of additional material, collected from the Andaman Sea and Bay of Bengal. This species co-occurs in the eastern sector of the northern Indian Ocean with two poorly defined congeners, R. annandalei Norman and R. lionotus Norman, which have been misidentified and confused with Indo-Pacific congeners since they were first described in 1926. Norman’s species are rediagnosed based on limited new material and a re-examination of the types. In the western sector of the northern Indian Ocean, Rhinobatos annandalei has been confused in recent literature with the sympatric R. punctifer Compagno and Randall, which is represented by four primary colour morphs, including a white-spotted colour morph resembling R. annandalei. Rhinobatos punctifer also displays strong intraspecific variability and sexual dimorphism in some body dimensions. These four species of Rhinobatos have unique MtDna sequences and belong to a clade of Indo-West Pacific species that are morphologically similar. Despite the relatively small numbers of specimens available for investigation, these species exhibit some clear differences in body proportions, meristics and squamation. Rhinobatos ranongensis sp. nov. differs from its northern Indian Ocean congeners through a combination of a relatively narrow disc and mouth, high vertebral count, long snout, low dorsal fins, and being largely plain coloured. A new lectotype and a paralectotype are designated for the syntypes of R. annandalei, and the four primary colour forms of R. punctifer, the plain, white-spotted and ocellated morphs, are described and the three nominal species rediagnosed. A key is provided to the four known members of the genus in the northern Indian Ocean. 

scholarly journals ΔR Correction Values for the Northern Indian Ocean

Radiocarbon ◽  
2001 ◽  
Vol 43 (2A) ◽  
pp. 483-488 ◽  
Author(s):  
Koushik Dutta ◽  
Ravi Bhushan ◽  
B L K Somayajulu
Keyword(s):  
Indian Ocean ◽  
Bay Of Bengal ◽  
Arabian Sea ◽  
Andaman Sea ◽  
Northern Indian Ocean ◽  
Northern Arabian Sea ◽  
Ocean Region ◽  
Thermocline Ventilation ◽  
Ventilation Rates ◽  
Made In

Apparent marine radiocarbon ages are reported for the northern Indian Ocean region for the pre-nuclear period, based on measurements made in seven mollusk shells collected between 1930 and 1954. The conventional 14C ages of these shells range from 693 ± 44 to 434 ± 51 BP in the Arabian Sea and 511 ± 34 to 408 ± 51 BP in the Bay of Bengal. These ages correspond to mean ΔR correction values of 163 ± 30 yr for the northern Arabian Sea, 11 ± 35 yr for the eastern Bay of Bengal (Andaman Sea) and 32 ± 20 yr for the southern Bay of Bengal. Contrasting reservoir ages for these two basins are most likely due to differences in their thermocline ventilation rates.

Redescription of the Indo-West Pacific cardinalfishes (Perciformes: Apogonidae) Rhabdamia spilota Allen & Kuiter 1994 and R. gracilis (Bleeker 1856)

Zootaxa ◽  
2018 ◽  
Vol 4377 (2) ◽  
pp. 178 ◽  
Author(s):  
TOMOHIRO YOSHIDA ◽  
HIROYUKI MOTOMURA
Keyword(s):  
Red Sea ◽  
Standard Length ◽  
New Caledonia ◽  
The Philippines ◽  
The Body ◽  
Andaman Sea ◽  
Sexual Dichromatism ◽  
Gill Rakers ◽  
Black Stripe ◽  
West Pacific

Rhabdamia spilota Allen & Kuiter 1994 (Apogonidae), a poorly known cardinalfish previously known only from the Philippines, Indonesia and the Red Sea, is redescribed on the basis of 70 specimens (20.9–61.2 mm standard length) (including types), from the Indo-West Pacific (Red Sea, Andaman Sea, Japan, South China Sea, the Philippines, Indonesia, New Caledonia, and Australia). Because most reports of the similar species R. gracilis (Bleeker 1856), following its original description, were based on misidentifications, R. gracilis is also redescribed (based on 98 Indo-West Pacific specimens from Seychelles, Maldives, Andaman Sea, Japan, Malaysia, Indonesia, New Caledonia, and Australia, 27.9–59.3 mm standard length); a lectotype is designated for it. Rhabdamia spilota differs from R. gracilis in having 27–33 (mode 30–31) developed gill rakers [vs. 22–27 (mode 24) in the latter], 27–33 (30) gill rakers including rudiments [vs. 23–27 (24–25)], a black stripe from the jaw tips to the anterior margin of the orbit (vs. black pigments only at snout and tip of lower jaw), 3–6 reddish brown to blackish blotches on the opercle and anterior of body (vs. blotches absent), and indistinct black pigment restricted to caudal fin outer margins (vs. pigment scattered over entire fin). Rhabdamia gracilis exhibits sexual dichromatism, female specimens larger than 41.3 mm SL having one or two black stripes on the lateral surface of the body; the stripes are absent in males and smaller females. No evidence of sexual dichromatism was found in R. spilota. 

Long-timescale variation in bulk and clay mineral composition of Indian continental margin sediments in the Bay of Bengal, Arabian Sea, and Andaman Sea

2014 ◽  
Vol 58 ◽  
pp. 117-138 ◽  
Author(s):  
Stephen C. Phillips ◽  
Joel E. Johnson ◽  
Michael B. Underwood ◽  
Junhua Guo ◽  
Liviu Giosan ◽  
...  
Keyword(s):  
Mineral Composition ◽  
Clay Mineral ◽  
Continental Margin ◽  
Bay Of Bengal ◽  
Arabian Sea ◽  
Andaman Sea ◽  
Clay Mineral Composition

A new deep-sea species of the snapping shrimp genus Alpheus Fabricius, 1798 (Decapoda: Caridea: Alpheidae) from Kagoshima Bay, Japan

Zootaxa ◽  
2018 ◽  
Vol 4434 (1) ◽  
pp. 99 ◽  
Author(s):  
TOMOYUKI KOMAI ◽  
JUN OHTOMI
Keyword(s):  
New Species ◽  
Bay Of Bengal ◽  
Deep Sea ◽  
Species Group ◽  
Andaman Sea ◽  
Snapping Shrimp ◽  
Kagoshima Bay ◽  
Major Cheliped ◽  
A New Species ◽  
Antennular Peduncle

A new species of the snapping shrimp genus Alpheus Fabricius, 1798, A. longipalma, is described and illustrated on the basis of material from Kagoshima Bay, Kyushu, Japan. It is referred to the A. brevirostris (Olivier, 1811) species group, and appears closest to A. macroskeles Alcock & Anderson, 1894, known with certainty from the Bay of Bengal and Andaman Sea, and A. talismani Coutière, 1898 from the eastern Atlantic. The greatly elongate minor cheliped in males, being subequal to or longer than the major cheliped with proportionally shorter dactylus distinguish the new species from A. macroskeles. The less elongate antennular peduncle and better-developed, rounded distal lamella of the antennal scaphocerite differentiate the new species from A. talismani. All specimens of the new species were trawled from depths greater than 200 m. 

scholarly journals A New Allogromiid Genus (Rhizopoda: Foraminiferida) from the Vellar Estuary, Bay of Bengal

1992 ◽  
Vol 11 (2) ◽  
pp. 233-239 ◽  
Author(s):  
Andrew J. Gooday ◽  
Olivia J. Fernando
Keyword(s):  
Bay Of Bengal ◽  
Brackish Water ◽  
New Genus ◽  
East Coast ◽  
First Record ◽  
Water Interface ◽  
East Coast Of India ◽  
Indian Waters ◽  
Vellar Estuary

Abstract. This paper reports what we believe to be the first record of allogromiid foraminifers from coastal Indian waters. Two species from the Vellar Estuary on the east coast of India south of Madras are described and placed in a new genus Vellaria. The foraminifers live at or near the sediment-water interface and are characterised by the development of a flared, conical or trumpet-shaped apertural structure which apparently serves to attach the test to small sand grains. Allogromiids are delicate and inconspicuous organisms which may be more widespread in esturine and brackish water settings than is currently realised.

scholarly journals Micro-caddisfly faunas of Australia and the southwest Pacific (Trichoptera, Hydroptilidae)

Zoosymposia ◽  
2016 ◽  
Vol 10 (1) ◽  
pp. 439-450
Author(s):  
ALICE WELLS ◽  
KJELL ARNE JOHANSON
Keyword(s):  
New Zealand ◽  
Pacific Islands ◽  
New Caledonia ◽  
New Guinea ◽  
Faunal Composition ◽  
Southwest Pacific ◽  
Sw Pacific ◽  
Chance Events ◽  
Corroborative Evidence

Today's distributions of faunal groups reflect historic events—geological and evolutionary, as well as dispersals, extinctions and chance events. The extent to which each of these contributed to the hydroptilid faunas of mainland Australia, Tasmania, New Guinea, New Zealand, New Caledonia, Fiji and Vanuatu is explored by comparison of the faunal composition, geology and geography of Australia and these SW Pacific islands. Corroborative evidence is sought from other groups, flora as well as fauna.

scholarly journals Deoxygenation in Marginal Seas of the Indian Ocean

2021 ◽  
Vol 8 ◽  
Author(s):  
S. Wajih A. Naqvi
Keyword(s):  
Indian Ocean ◽  
Oxygen Content ◽  
Red Sea ◽  
Bay Of Bengal ◽  
Persian Gulf ◽  
Oxygen Demand ◽  
Andaman Sea ◽  
Marginal Seas ◽  
The Indian Ocean ◽  
Oxygen Minimum

This article describes oxygen distributions and recent deoxygenation trends in three marginal seas – Persian Gulf and Red Sea in the Northwestern Indian Ocean (NWIO) and Andaman Sea in the Northeastern Indian Ocean (NEIO). Vertically mixed water column in the shallow Persian Gulf is generally well-oxygenated, especially in winter. Biogeochemistry and ecosystems of Persian Gulf are being subjected to enormous anthropogenic stresses including large loading of nutrients and organic matter, enhancing oxygen demand and causing hypoxia (oxygen < 1.4 ml l–1) in central and southern Gulf in summer. The larger and deeper Red Sea is relatively less affected by human activities. Despite its deep water having remarkably uniform thermohaline characteristics, the central and southern Red Sea has a well-developed perennial oxygen minimum at mid-depths. The available data point to ongoing deoxygenation in the northern Red Sea. Model simulations show that an amplified warming in the marginal seas of the NWIO may cause an intensification of the Arabian Sea oxygen minimum zone (OMZ). Increases in particulate organic carbon and decreases in oxygen contents of the outflows may also have a similar effect. In the Andaman Sea, waters above the sill depth (∼1.4 km) have characteristics similar to those in the Bay of Bengal, including an intense OMZ. As in the case of the Bay of Bengal, oxygen concentrations within the Andaman Sea OMZ appear to have declined slightly but significantly between early 1960s and 1995. The exceedingly isothermal and isohaline water that fills the deep Andaman Basin is also remarkably homogenous in terms of its oxygen content. A very slight but statistically significant decrease in oxygen content of this water also seems to have occurred over three decades preceding 1995. New information is badly needed to assess the extent of further change that may have occurred over the past 25 years. There have been some reports of coastal “dead zones” having developed in the Indian Ocean marginal seas, but they are probably under-reported and the effects of hypoxia on the rich and diverse tropical ecosystems – coral reefs, seagrasses, and mangroves – in these seas remain to be investigated.

Redescription of the serranid perchlet Chelidoperca pleurospilus (Günther, 1880)

Zootaxa ◽  
2020 ◽  
Vol 4830 (1) ◽  
pp. 141-160
Author(s):  
MIZUKI MATSUNUMA ◽  
FUMIHITO TASHIRO
Keyword(s):  
Lateral Line ◽  
New Caledonia ◽  
Morphological Changes ◽  
Lower Lobe ◽  
Ventral Surface ◽  
Andaman Sea ◽  
Type Specimens ◽  
Caudal Fin ◽  
Lower Jaw ◽  
Northwestern Australia

Chelidoperca pleurospilus (Günther, 1880) (Perciformes: Serranidae) is redescribed on the basis of the lectotype (designated herein) and 69 non-type specimens from the eastern Indian and western Pacific oceans, ranging from the Andaman Sea east to New Caledonia, and northwestern Australia north to Japan. Literature records of the species from the Red Sea and Madagascar are considered applicable to Chelidoperca occipitalis Kotthaus 1973. Chelidoperca pleurospilus is characterized by the following combination of characters: pectoral-fin rays 14–16 (modally 15); pored lateral-line scales 40–43 (43); scale rows in longitudinal series 42–47 (44); scale rows between lateral line and base of 6th dorsal-fin spine 4 (3 full-sized scales plus 1 half-sized); interorbital scales reaching mid-orbit level, not extending beyond anterior margin of orbit; scales on lower jaw ventral surface restricted to angular, not extending anteriorly onto dentary; posterior tip of upper caudal-fin lobe slightly elongate with rounded or pointed contour, that of lower lobe not elongate, with rounded or truncate contour; longitudinal row of ca. 5 dark, laterally elongate blotches (more-or-less continuous in small specimens <60 mm SL) along mid-body from behind head to caudal-fin base. The species is compared with its congeners, and morphological changes with growth in the former discussed in detail. 

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