Food habits of fishes in a seagrass bed on a fringing coral reef at Iriomote Island, southern Japan

2003 ◽  
Vol 50 (1) ◽  
pp. 15-22 ◽  
Author(s):  
Yohei Nakamura ◽  
Masahiro Horinouchi ◽  
Tadaomi Nakai ◽  
Mitsuhiko Sano
Keyword(s):  
Coral Reef ◽  
Food Habits ◽  
Seagrass Bed ◽  
Iriomote Island ◽  
Southern Japan

Food habits of fishes in the mangrove estuary of Urauchi River, Iriomote Island, southern Japan

2008 ◽  
Vol 74 (5) ◽  
pp. 1024-1033 ◽  
Author(s):  
Kusuto NANJO ◽  
Hiroyoshi KOHNO ◽  
Mitsuhiko SANO
Keyword(s):  
Food Habits ◽  
Iriomote Island ◽  
Mangrove Estuary ◽  
Southern Japan

scholarly journals Pair formation, home range, and spatial variation in density, size and social status in blotched foxfaceSiganus unimaculatuson an Okinawan coral reef

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1280 ◽  
Author(s):  
Atsushi Nanami
Keyword(s):  
Coral Reef ◽  
Home Range ◽  
Spatial Variation ◽  
Reef Flat ◽  
Pair Formation ◽  
Size Class ◽  
Reef Slope ◽  
Rocky Reef ◽  
Seagrass Bed ◽  
Agonistic Display

The present study examined pair formation, spatial pattern of home range and spatial variation in density, size and social status of blotched foxfaceSiganus unimaculatus(family Siganidae) on an Okinawan coral reef. Of 32 pairs sampled for sexing, 31 (96.9%) were heterosexual and showed size-assortative pairing. Developed ovaries were found in April and July, whereas oocytes were immature in August, September and February. Heterosexual pairing was found in both reproductive and non-reproductive periods. Home range size tended to be positively related to fork length (FL). The degree of home range overlap for same size class pairs was smaller than that for different size class pairs. The intraspecific behavior when two pairs approached each other was categorized as ‘attack,’ ‘agonistic display’ and ‘no interactions,’ and the frequency of agonistic behaviors (“attack” or “agonistic display”) was significantly greater than “no interactions.” Underwater observations at a seagrass bed, a rocky reef flat and a sheltered reef slope revealed that the mean FL was significantly smaller at the sheltered reef slope (4–13 cm) than at the rocky reef flat (>13 cm). No individuals were found in the seagrass bed. Most individuals less than 6 cm FL were solitary, whereas most individuals over 7 cm FL were paired. Density was significantly greater on the sheltered reef slope than on the rocky reef flat.

Holocene sea-level change and evolution of a mixed coral reef and mangrove system at Iriomote Island, southwest Japan

2019 ◽  
Vol 220 ◽  
pp. 166-175 ◽  
Author(s):  
Hiroya Yamano ◽  
Tomomi Inoue ◽  
Hiroshi Adachi ◽  
Keisuke Tsukaya ◽  
Ryota Adachi ◽  
...  
Keyword(s):  
Coral Reef ◽  
Sea Level ◽  
Sea Level Change ◽  
Southwest Japan ◽  
Level Change ◽  
Iriomote Island ◽  
Mangrove System ◽  
Holocene Sea Level

Feeding habits of the darkfin hind Cephalopholis urodeta (Serranidae) at Iriomote Island, southern Japan

2001 ◽  
Vol 67 (4) ◽  
pp. 640-643 ◽  
Author(s):  
Tadaomi Nakai ◽  
Mitsuhiko Sano ◽  
Hisashi Kurokura
Keyword(s):  
Feeding Habits ◽  
Iriomote Island ◽  
Southern Japan

Ontogenetic and seasonal changes in the diet of the halfbeak Zenarchopterus dunckeri at Iriomote Island, southern Japan

2017 ◽  
Vol 64 (4) ◽  
pp. 470-474 ◽  
Author(s):  
Takahiro Kanai ◽  
Kusuto Nanjo ◽  
Hiroyoshi Kohno ◽  
Mitsuhiko Sano
Keyword(s):  
Seasonal Changes ◽  
Iriomote Island ◽  
Southern Japan ◽  
Zenarchopterus Dunckeri
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