scholarly journals Morphological and genetic evaluation of the thumbprint emperor, Lethrinus harak (Forsskål, 1775) in the Pacific and Indian Oceans

F1000Research ◽  
2020 ◽  
Vol 9 ◽  
pp. 915
Author(s):  
Muhammad Afrisal ◽  
Yukio Iwatsuki ◽  
Andi Iqbal Burhanuddin
Keyword(s):  
Pacific Ocean ◽  
Indian Ocean ◽  
Marine Biology ◽  
Sequence Data ◽  
Statistical Tests ◽  
Accurate Determination ◽  
Morphometric Character ◽  
Genetic Characteristics ◽  
Morphometric Characters ◽  
The Pacific

Background: The Lethrinidae (emperors) include many important food fish species. Accurate determination of species and stocks is important for fisheries management. The taxonomy of the genus Lethrinus is problematic, for example with regards to the identification of the thumbprint emperor Lethrinus harak. Little research has been done on L. harak diversity in the Pacific and Indian Oceans. This study aimed to evaluate the morphometric and genetic characters of the thumbprint emperor, L. harak (Forsskål, 1775) in the Pacific and Indian Oceans. Methods: This research was conducted in the Marine Biology Laboratory, Faculty of Marine Science and Fisheries, Hasanuddin University, and Division of Fisheries Science, University of Miyazaki. Morphometric character measurements were based on holotype character data, while genetic analysis was performed on cytochrome oxidase subunit I (COI) sequence data. Morphometric data were analysed using principal component analysis (PCA) statistical tests in MINITAB, and genetic data were analysed in MEGA 6. Results: Statistical test results based on morphometric characters revealed groupings largely representative of the Indian and Pacific Oceans. The Seychelles was separated from other Indian Ocean sites and Australian populations were closer to the Pacific than the Indian Ocean group. The genetic distance between the groups was in the low category (0.000 - 0.042). The phylogenetic topology reconstruction accorded well with the morphometric character analysis, with two main L. harak clades representing Indian and Pacific Ocean, and Australia in the Pacific Ocean clade. Conclusions: These results indicate that geographical and environmental factors can affect the morphometric and genetic characteristics of L. harak.

scholarly journals Morphological and genetic evaluation of the thumbprint emperor, Lethrinus harak (Forsskål, 1775) in the Pacific and Indian Oceans

F1000Research ◽  
2021 ◽  
Vol 9 ◽  
pp. 915
Author(s):  
Muhammad Afrisal ◽  
Yukio Iwatsuki ◽  
Andi Iqbal Burhanuddin
Keyword(s):  
Pacific Ocean ◽  
Indian Ocean ◽  
Genetic Distance ◽  
Marine Biology ◽  
Sequence Data ◽  
Statistical Tests ◽  
Accurate Determination ◽  
Morphometric Character ◽  
Morphometric Characters ◽  
The Pacific

Background: The Lethrinidae (emperors) include many important food fish species. Accurate determination of species and stocks is important for fisheries management. The taxonomy of the genus Lethrinus is problematic, for example with regards to the identification of the thumbprint emperor Lethrinus harak. Little research has been done on L. harak diversity in the Pacific and Indian Oceans. This study aimed to evaluate the morphometric and genetic characters of the thumbprint emperor, L. harak (Forsskål, 1775) in the Pacific and Indian Oceans. Methods: This research was conducted in the Marine Biology Laboratory, Faculty of Marine Science and Fisheries, Hasanuddin University, and Division of Fisheries Science, University of Miyazaki. Morphometric character measurements were based on holotype character data, while genetic analysis was performed on cytochrome oxidase subunit I (COI) sequence data. Morphometric data were analysed using principal component analysis (PCA) statistical tests in MINITAB, and genetic data were analysed in MEGA 6. Results: Statistical test results based on morphometric characters revealed groupings largely representative of the Indian and Pacific Oceans. The Seychelles was separated from other Indian Ocean sites and Australian populations were closer to the Pacific than the Indian Ocean group. The genetic distance between the groups was in the low category (0.000 - 0.042). The phylogenetic topology reconstruction accorded well with the morphometric character analysis, with two main L. harak clades representing Indian and Pacific Ocean, and Australia in the Pacific Ocean clade. Conclusions: These results indicate that the morphological character size of L. harak from Makassar and the holotype from Saudi Arabia have changed. Genetic distance and phylogeny reconstruction are closely related to low genetic distance.

First record of Hyalascus (Hexactinellida: Rossellidae) from the Indian Ocean, with description of a new species from a volcanic seamount in the Andaman Sea

Zootaxa ◽  
2010 ◽  
Vol 2667 (1) ◽  
pp. 64 ◽  
Author(s):  
SABYASACHI SAUTYA ◽  
KONSTANTIN R. TABACHNICK ◽  
BABAN INGOLE
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Indian Ocean ◽  
First Record ◽  
Andaman Sea ◽  
The Pacific ◽  
The Indian Ocean ◽  
The Pacific Ocean ◽  
Back Arc ◽  
A New Species

A new species of Hyalascus is described from the submarine volcanic crater seamount of Andaman Back-arc Basin, Indian Ocean. The genus was previously known in the Pacific Ocean only.

scholarly journals Reports of Cubiceps baxteri McCulloch 1923 from Indian Ocean are probably misidentifications of Cubiceps whiteleggii (Waite 1894)

Zootaxa ◽  
2021 ◽  
Vol 4985 (1) ◽  
pp. 142-144
Author(s):  
V. VIJI ◽  
K.C. HARISH ◽  
B. MADHUSOODANA KURUP
Keyword(s):  
Pacific Ocean ◽  
Indian Ocean ◽  
Baja California ◽  
New South ◽  
Tropical Species ◽  
Lord Howe Island ◽  
South Wales ◽  
The Pacific ◽  
Tasman Sea ◽  
The Pacific Ocean

Cubiceps baxteri McCulloch 1923 was described based on a single, imperfect (devoid of a tail) stranded specimen collected from a beach in Lord Howe Island, Tasman Sea. Though C. baxteri was reported as a widely distributed tropical species (Butler 1979), it was mainly a result of its incorrect identification (see Agafonova 1994; Stewart and Last 2015). The distribution of C. baxteri is reported to be restricted to the Pacific Ocean, from Japan and eastwards to Baja California (Mexico), southwards to the Hawaiian Islands, New South Wales (Australia), and Lord Howe Island (Tasman Sea) to the Southern parts of Chile (Eschmeyer et al. 2017; Mundy 2005; Agafonova 1994). 

scholarly journals Tracking the Missing Heat from the Global Warming Hiatus

Eos ◽  
2015 ◽  
Vol 96 ◽  
Author(s):  
Christina Reed
Keyword(s):  
Global Warming ◽  
Pacific Ocean ◽  
Indian Ocean ◽  
Surface Heat ◽  
The Pacific ◽  
Global Warming Hiatus ◽  
The Indian Ocean ◽  
The Pacific Ocean ◽  
Warming Hiatus

Despite indications that the Pacific Ocean is helping to take up the world's missing surface heat, it is not storing the heat; oceanographers now find the ocean has moved heat over to the Indian Ocean.

scholarly journals Hindu-Buddha: Cara Masyarakat Nusantara dalam Berspiritual Sebelum Datang Islam

2020 ◽  
Vol 5 (2) ◽  
pp. 183
Author(s):  
Domidoyo Marthinus
Keyword(s):  
Pacific Ocean ◽  
Indian Ocean ◽  
The Pacific ◽  
The World ◽  
The Indian Ocean ◽  
The Pacific Ocean ◽  
The Way

Nusantara adalah suatu wilayah kepulauan yang berada di antara dua benua, Asia dan Australia, sebagai benua yang berada dalam dua samudera raya yang di kenal sebagai samudera India dan samudera Pasifik. Kepulauan ini memotong ekuator dari 95 derajat sampai 141 derajat bujur timur. Penduduk pulau ini menarik perhatian berbagai masyarakat dari penjuru dunia, karena tanah subur dengan  limpahan rempah-rempah dan corak masyarakat yang akomodatif dengankecenderunganfriendly dengan kehadiran tamu. Hal ini memicu para pedagang untuk berniaga dan sekaligus bersyiar atau berdakwah. Orang India yang beragama Hindu dan Buddha menjadi orang pertama yang berlabuh untuk berdagang dan sekaligus memperkenalkanagama yang di anut. Hal ini menjadikan identitas sangat bagus untuk diperbincangkan. Sebagai pendatang dantamu di Nusantara, orang-orang India membawa segala identitas termasuk budaya dan agama. Paper ini menjelaskan cara agama dari India hidup dan besar di tengah masyarakat.[The Nusantara is an archipelago located between two continents, Asia and Australia, as a continent located in two major oceans known as the Indian Ocean and the Pacific Ocean. These islands intersect the equator from 95 degrees to 141 degrees east longitude. The inhabitants of the island attract the attention of various people from all over the world because the land is fertile with an abundance of spices and an accommodating community style with a friendly inclination to the presence of guests. It triggered the traders to trade and simultaneously spread or preach. Indians who were Hindus and Buddhists were the first to anchor to trade and at the same time introduce the religion adherence embraced. It makes identity important to talk about. As guests and guests in the archipelago, Indians carry all identities, including culture and religion. This paper explains the way religions from India live and grow in society.]

A new species of Metaruncina (Gastropoda: Heterobranchia: Runcinida) from Vietnam with a discussion on the so-called rudimentary radula in runcinids

Zootaxa ◽  
2021 ◽  
Vol 4974 (1) ◽  
pp. 197-200
Author(s):  
ALEXEI V. CHERNYSHEV
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Coastal Waters ◽  
Marine Biology ◽  
Pacific Coast ◽  
Common Species ◽  
Scientific Center ◽  
The Pacific ◽  
The Pacific Ocean ◽  
A New Species

Marine heterobranch slugs of the order Runcinida comprise 61 species, most of which inhabit the Atlantic Ocean and are referred to the genus Runcina. The Runcinida of the Pacific Ocean have been much less studied to date: only 12 species, from the genera Metaruncina Baba, 1967, Rfemsia Chernyshev, 1999, Runcinida Burn, 1963, Runcinella Odhner, 1924, Pseudoilbia M. C. Miller & Rudman, 1968, and Runcina Forbes [in Forbes and Hanley], 1851, have been described from the region. Metaruncina, Rfemsia, and Runcinida are found in the Pacific Ocean only (Baba 1954, 1967; Burn 1963; Gosliner 1991; Chernyshev 1998, 1999, 2005, 2006). The genus Metaruncina, endemic from the Pacific coast of Asia, includes two species: M. setoensis (Baba, 1954) and M. nhatrangensis Chernyshev, 2005. The latter is the only runcinid described from the coastal waters of the South China Sea, where it was found in the bays of Nha Trang and Van Phong (Chernyshev 2005). During subsequent expeditions to the coastal waters of Vietnam, this species was also recorded from off Tho Chu Island (09°19’N, 103°30’E) and off Nam Du Island (09°43′ N, 104°23′ E). However, in addition to this common species, an undescribed species of Metaruncina was collected. A description of this new species is provided in the present paper. Type material was deposited at the Museum of the A.V. Zhirmunsky National Scientific Center of Marine Biology FEB RAS, Vladivostok, Russia (MIMB). 

Distribution and Synonymy in the Pacific Ocean, and Variation, of the Greenland Halibut, Reinhardtius hippoglossoides (Walbaum)

1964 ◽  
Vol 21 (5) ◽  
pp. 1129-1154 ◽  
Author(s):  
Carl L. Hubbs ◽  
Norman J. Wilimovsky
Keyword(s):  
Pacific Ocean ◽  
Bering Sea ◽  
Single Species ◽  
Greenland Halibut ◽  
Meristic Characters ◽  
Morphometric Characters ◽  
Alaska Peninsula ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Reinhardtius Hippoglossoides

Long known in the Pacific Ocean from a single specimen from east-central Japan, the very distinctive flatfish genus Reinhardtius has been shown since 1930 to maintain a population of commercial significance from northern Japan to northwestern Bering Sea. It is now found to be common also in eastern Bering Sea, and to occur also just south of the tip of the Alaska Peninsula, in northern and central California, and even at the extreme north of Baja California, Mexico. Japan and the Californias appear to be inhabited by non-breeding expatriates, whose wanderings are attributable to the free-swimming habits and prolonged early pelagic development of the species. Lack of records between the Alaska Peninsula and California may possibly indicate actual absence, attributable to current pattern. Analysis of the only morphometric characters thought to be indicative of subspecific differentiation between the Pacific and Atlantic stocks discloses no basis for such separation, nor do any meristic characters disclose such a basis. The single species Reinhardtius hippoglossoides is therefore regarded as a uniquely undifferentiated amphiboreal taxon. The chief distinction between the ocean stocks lies in the number of vertebrae, but the differentiation (probably genetic) is not beyond the racial level. The difference in vertebral numbers, surprisingly, is not paralleled by a difference in numbers of dorsal or anal rays; nor is there any marked correlation between vertebral and ray numbers. As expected, the numbers of dorsal and anal rays are found to be positively correlated, and the number of precaudal and caudal vertebrae to be negatively correlated. In this flatfish of relatively limited asymmetry the numbers of rays are virtually identical in the two pectoral fins. Two reversed examples of the species are reported.

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