• Title/Summary/Keyword: Pohnpei

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Observations on some mangrove-associated algae from the western Pacific (Guam, Chuuk, Kosrae, and Pohnpei)

  • West, John A.;Kamiya, Mitsunobu;Loiseaux de Goer, Susan;Karsten, Ulf;Zuccarello, Giuseppe C.
    • ALGAE
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    • v.28 no.3
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    • pp.241-266
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    • 2013
  • The mangrove algal flora of Guam and the Federated States of Micronesia has been poorly explored. We add to our knowledge of this region by observations of collections from these regions. This paper presents new and additional records of: Rhodophyta-Acrochaetium globosum, Colaconema sp., Caulacanthus indicus, Bostrychia moritziana / B. radicans, B. radicosa, B. simpliciuscula, B. kelanensis and B. tenella, Murrayella periclados, and Caloglossa ogasawaraensis; Chlorophyta-Boodleopsis carolinensis; and Phaeophyceae-Dictyota adnata, Dictyotopsis propagulifera, and Canistrocarpus cervicornis. Most specimens were cultured to investigate their reproductive biology and many specimens were further identified using molecular data. Low molecular weight carbohydrates (dulcitol, sorbitol, and digeneaside) were identified in samples of B. radicosa and B. simpliciuscula. We also present data on manganese-rich deposits found on B. simpliciuscula and B. tenella in culture, possibly formed by epiphytic bacteria.

Isolation and Structure Determination of Two Furanosesquiterpenes from the Soft Coral Sinularia lochmodes (산호로부터 2개의 푸란노세스키테르펜의 분리와 구조 결정)

  • Park, Seon Gu;Paul J. Scheuer
    • Journal of the Korean Chemical Society
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    • v.38 no.10
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    • pp.749-752
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    • 1994
  • Two furanosesquiterpenes, (5'E)-5-(2',6'-dimethylocta-5',7'-dienyl) furan-3-carboxylic acid (1) and (1'E,5'E)-5-(2',6'-dimethylocta-l',5',7'-trienyl) furan-3-carboxylic acid (2), were isolated from soft coral Sinularia lochmodes collected from Palikir pass at Pohnpei Micronesia, June, 1990 in Hawaii. Their structures were elucidated by $^1H$, $^{13}C$ NMR, Homo-COSY, $^1H$-$^{13}C$ (1 bond) Heteronuclear Multiple Quantum Coherence Spectroscopy (HMQC), $^1H$-$^{13}C$ (2 and 3 bond) Heteronuclear Multiple Bond Coherence Spectroscopy (HMBC), Electron Impact Mass Spectroscopy (EI-ms), and Infrared Spectroscopy (IR).

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Marine Mollusk Fauna of Kosrae Island, Federated States of Micronesia

  • Lee, Sang-Hwa;Park, Joong-Ki
    • The Korean Journal of Malacology
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    • v.29 no.4
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    • pp.343-376
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    • 2013
  • The Federated States of Micronesia consists of four states of Yap, Chuuk, Pohnpei and Kosrae, which are located in the West Pacific Ocean. In order to investigate molluscan fauna of Kosrae Island, field survey was made twice from 21st to 30th of January, 2011 and from 6th to 17th of January, 2012 for four localities including 10 intertidal and 14 subtidal zones of Kosrae Island. The mollusk samples collected were identified based on their morphological characteristics, comprising a total of 120 species from 30 families through this survey. In this study, we provided species list and illustrations for 120 species identified, and combined these with the previous record, resulting in a total of 208 species from 47 families in Kosrae Island.

Genetic Diversity of the Mud Crab Scylla serrata in Micronesia based on Microsatellite Marker Analysis (마이크로세틀라이트 마커 분석을 이용한 남서태평양 일대에 서식하는 남방톱날꽃게(Scylla serrata)의 유전적 다양성)

  • Jang, Yo-Soon;Yi, Soon-Kil;Noh, Choong-Hwan;Oh, Sung-Yong
    • Ocean and Polar Research
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    • v.31 no.4
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    • pp.319-326
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    • 2009
  • Analysis of four microsatellite markers from Mud Crab Scylla serrata revealed that there is high level of genetic diversity within this species. Genetic diversity of S. serrata was calculated using allele diversity, observed heterozygosity, expected heterozygosity (Het-exp), polymorphic information content, gene differentiation and Nei's $D_{A}$ distance. Mean polymorphic information content value was 0.797, which reflected high level of polymorphism across the loci of S. serrata. The Palau population has the highest genetic diversity (Het-exp=0.871), while the Kosrae population has the lowest genetic diversity (Hetexp=0.806). However, the geographical genetic distance among S. serrata populations from Yab, Chuuk, Pohnpei, Kosrae, and Palau were low (0.2009${\sim}$0.3350). These results suggest that despite their wide distribution, S. serrata are no different in geographical genetic diversity within the five sampled locations.