Genetic variation and clonal structure in the scleractinian coral Pocillopora damicornis in the Ryukyu Archipelago, southern Japan

1999 ◽  
Vol 134 (4) ◽  
pp. 753-759 ◽  
Author(s):  
M. Adjeroud ◽  
M. Tsuchiya
2013 ◽  
Vol 1 (1) ◽  
pp. 3
Author(s):  
Hanny Tioho

In order to elucidate the patterns of dispersal in scleractinian coral Pocillopora damicornis near the northern limit of its latitudinal range, a total of 50 colonies (15-25 cm in diameter) of this coral were collected from Ooshima Island, Japan, and transplanted within one hour to the area of Satsuki, where they were not present before. Three concentric areas were established such as; the parental area (PA), intermediate area (IA) and outer area (OA). A total of 831 new corals were found in 1997 while 54.3% of these occurred in PA, 30.5% in IA and 15.1% in OA. In 1998, 52.3% of recruits settled in PA, 30.5% in IA and 17.2% in OA. A significant difference in the density of recruits was found among three areas, but recruit density was not significantly different between years and there was no interaction between area and year. There was no significant difference in the number of recruits among different directions, indicating no tendency for larvae to be concentrated in one particular direction. The present study suggests that the planulae of P. damicornis have limited dispersal distances at high-latitudes© Untuk menjelaskan pola penyebaran karang scleractinia Pocillopora damicornis yang berada di batas Utara penyebarannya, total 50 koloni (15-25 cm) dari karang ini dikumpulkan dari Pulau Ooshima, Jepang, dan di transplantasikan dalam waktu satu jam ke daerah Satsuki yang tidak ditemukan jenis ini. Tiga daerah ditetapkan yaitu, Daerah Induk (PA), Daerah Tengah (IA), dan Daerah Luar (OA). Sebanyak 831 karang baru ditemukan pada tahun 1997, sementara 54,3% ditemukan di PA, 30,5% di IA dan 15,1% di OA. Pada tahun 1998, 52,3% ditemukan di PA, 30,5% di IA, dan 17,2% di OA. Ditemukan perbedaan yang signifikan untuk kepadatan antara ketiga daerah tersebut, tetapi tidak ada perbedaan yang signifikan antar tahun dan tidak ada interaksi antara daerah dan tahun. Tidak ada perbedaan yang signifikan dalam jumlah pada arah yang berbeda sehingga hal ini menunjukkan tidak ada kecenderungan bagi larva untuk terkonsentrasi pada satu arah tertentu. Penelitian ini menunjukkan bahwa planula P.


Coral Reefs ◽  
2011 ◽  
Vol 31 (2) ◽  
pp. 505-517 ◽  
Author(s):  
E. Maier ◽  
A. Buckenmaier ◽  
R. Tollrian ◽  
B. Nürnberger

Author(s):  
Kazumasa Hashimoto ◽  
Takuro Shibuno ◽  
Eiko Murayama-Kayano ◽  
Hiroshi Tanaka ◽  
Toshiaki Kayano

Radiocarbon ◽  
2002 ◽  
Vol 44 (2) ◽  
pp. 495-502 ◽  
Author(s):  
Hiroto Takamiya ◽  
Hiromi Obata

The discovery of the Iwajuku site in Japan is the beginning of the study of the first Paleolithic cultures in the region. In this paper we examine the timing of the earliest colonization of southern Japan, especially focusing on the areas of Kyushu, Shikoku, and the Ryukyu archipelago. Osteological studies have proposed the ultimate origin of these western Japanese Paleolithic populations in Southeast Asia. If this hypothesis is correct, Native Americans may be remotely related to the populations of this region. Greater attention to data from areas such as Japan is necessary to understand the timing and nature of New World colonization.


2011 ◽  
Vol 12 (5) ◽  
pp. 1323-1332 ◽  
Author(s):  
Jessica R. Brzyski ◽  
Theresa M. Culley

Author(s):  
A. Nishikawa ◽  
R.A. Kinzie ◽  
K. Sakai

The fragmentation and genotypic diversity of Montipora capitata was determined in Kaneohe Bay, Hawaii, using field investigations and allozyme electrophoresis. Two stations were established in the Bay, one in the centre (exposed reef edge, EXPO) and the other at the south end (sheltered lagoonal reef, SHEL). Although the number and mean per cent cover of attached colonies did not differ significantly between the two habitats, number and cover of unattached colonies (fragments) were significantly higher at the sheltered habitat. Thirty-seven genotypes were detected in 176 samples using two or three enzyme loci. Although mean genet number did not differ significantly between the two habitats (mean±SE, 8.2±1.2 and 12.2±1.7 in exposed and sheltered reefs, respectively), lower genetic diversity was detected at SHEL (mean NG:N±SE, 0.75±0.08 and 0.50±0.06 for EXPO and SHEL, respectively). There was no evidence of strong clonal structure, i.e. many colonies, but few genets. Sexually produced new genets may account for the high genotypic diversity in M. capitata at these two habitats.


2011 ◽  
Vol 214 (9) ◽  
pp. 1533-1545 ◽  
Author(s):  
J. Vidal-Dupiol ◽  
O. Ladriere ◽  
A.-L. Meistertzheim ◽  
L. Foure ◽  
M. Adjeroud ◽  
...  

2013 ◽  
Vol 161 (3) ◽  
pp. 531-541 ◽  
Author(s):  
Mehdi Adjeroud ◽  
Aurélie Guérécheau ◽  
Jeremie Vidal-Dupiol ◽  
Jean-François Flot ◽  
Sophie Arnaud-Haond ◽  
...  

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