scholarly journals Distribution and abundance of hyperbenthic mysids in the inner and central parts of Ariake Sound, western Kyushu, Japan

2016 ◽  
Vol 70 (2) ◽  
pp. 75-82
Author(s):  
Yuichi KOSHIISHI ◽  
Noriko TANAKA ◽  
Setuo KIYOMOTO ◽  
Kengo SUZUKI
Keyword(s):  
Ariake Sound

Egg size and clutch size in three species of Nihonotrypaea (Decapoda: Thalassinidea: Callianassidae) from western Kyushu, Japan

2006 ◽  
Vol 86 (1) ◽  
pp. 103-111 ◽  
Author(s):  
K. Kubo ◽  
K. Shimoda ◽  
A. Tamaki
Keyword(s):  
Clutch Size ◽  
Egg Size ◽  
Relative Size ◽  
Size Variation ◽  
Middle Part ◽  
Reproductive Period ◽  
Late Winter ◽  
Estuarine System ◽  
Ariake Sound ◽  
Interspecific Comparisons

Three species of the callianassid genus Nihonotrypaea occur in the Ariake Sound estuarine system, southern Japan; they consist of two tidal-flat species (N. harmandi; N. japonica) and one boulder-beach species (N. petalura), with maximum population densities of 1440, 343, and 12 ind m−2, respectively. Nihonotrypaea harmandi and N. petalura are distributed along the coastline from the outermost part of the sound to the open sea, while N. japonica occurs in the middle part of the sound. Nihonotrypaea japonica has an extended reproductive period from late winter to autumn, while those of the other species are from late spring or summer to autumn. Interspecific comparisons were made for recently laid egg size (as volume) and clutch size (as number of eggs per female). Only in N. japonica was a seasonal egg size variation observed, being significantly larger in winter to spring (mean=0.106 mm3) than in summer (0.080 mm3). By contrast, clutch size was significantly smaller in winter to spring, resulting in nearly the same clutch volume per female (product of the mean egg volume and clutch size) between the seasons. Among the three species, the egg size was ordered as N. japonica (overall mean volume through the seasons=0.092 mm3)>>N. petalura (0.057 mm3)>N. harmandi (0.054 mm3). The clutch size was ordered as N. harmandi>N. petalura≈N. japonica. The clutch volume was ordered as N. japonica≈N. harmandi>N. petalura. The smallest clutch volume value for N. petalura female showed an opposite trend to the relative size of the major cheliped found in a previous study.

scholarly journals Isotopic evidence for phytoplankton as a major food source for macrobenthos on an intertidal sandflat in Ariake Sound, Japan

2005 ◽  
Vol 304 ◽  
pp. 101-116 ◽  
Author(s):  
H Yokoyama ◽  
A Tamaki ◽  
K Koyama ◽  
Y Ishihi ◽  
K Shimoda ◽  
...  
Keyword(s):  
Food Source ◽  
Isotopic Evidence ◽  
Major Food ◽  
Intertidal Sandflat ◽  
Ariake Sound

Occurrence, Growth and Food of Longheaded Eagle Ray, Aetobatus flagellum, in Ariake Sound, Kyushu, Japan

2005 ◽  
Vol 74 (2) ◽  
pp. 229-238 ◽  
Author(s):  
Atsuko Yamaguchi ◽  
Itsuro Kawahara ◽  
Shirou Ito
Keyword(s):  
Ariake Sound
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