Oyster farms are the main spawning grounds of the black sea bream Acanthopagrus schlegelii in Hiroshima Bay, Japan.
Oyster farms are the main spawning grounds of the black sea bream Acanthopagrus schlegelii in Hiroshima Bay, Japan.
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作者：
Kawai K;Fujita H;Sanchez G;Umino T
了解牡蛎养殖场的人为影响对于管理和养护海洋鱼类至关重要。在日本，广岛湾是牡蛎养殖最密集的地区，因此适合研究这些养殖场的影响。在这里，我们调查了黑鳍金枪鱼的球形浮游卵，这是海湾中资源最丰富的鱼类之一。我们的调查是在14个站点进行的，其中包括牡蛎养殖场和历史产卵场。我们在四个站点发现了最高的卵密度，一个是历史上的产卵聚集地，三个是主要的牡蛎养殖场。此外，在广岛湾最深处的调查显示，两条主要河流的排放处产卵密度较低，这表明黑鱼避免在低盐度地区产卵。我们的研究表明，牡蛎养殖场通过提供比历史上的产卵场更多的食物来源来有效产卵，从而使黑鱼的产卵者受益。然而，牡蛎养殖场是否代表着该物种的全部优势尚不清楚，特别是因为人们知道，牡蛎养殖场拥有捕食鱼卵的水母，并限制可能影响鱼卵存活的水流。
Understanding the anthropogenic impact of oyster farms is essential for the management and conservation of marine fishes. In Japan, Hiroshima Bay is the region with the most intense oyster farming and thus suitable to study the impact of these farms. Here, we surveyed spherical planktonic eggs of the black sea bream Acanthopagrus schlegelii, one of the most abundant fish in the Bay. Our survey was performed at fourteen stations which included places with oyster farms and historical spawning grounds. We found the highest egg densities in four stations, one with historical spawning aggregations and three with major oyster farms. Besides, surveys at the innermost part of Hiroshima Bay, where two major rivers discharge, showed a low density of eggs indicating that black sea bream avoids spawning in low salinity areas. Our study suggests that oyster farms benefit spawners of black sea bream by providing more food sources than historical spawning grounds for efficient spawning. Yet, whether oyster farms represent a full advantage for the species remains unclear, particularly because they are known to host jellyfishes that prey on eggs and limit water flow that can influence the survival of fish eggs.
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影响因子：
2.5
作者：
Peterson, CH;Grabowski, JH;Powers, SP
通讯作者：
Powers, SP
影响因子：
2.5
作者：
PURCELL, JE;NEMAZIE, DA;GAMBLE, JC
通讯作者：
GAMBLE, JC
影响因子：
2.4
作者：
Gonzalez, Enrique Blanco;Murakami, Tomoya;Umino, Tetsuya
通讯作者：
Umino, Tetsuya
影响因子：
10.4
作者：
Barrett, Luke T.;Swearer, Stephen E.;Dempster, Tim
通讯作者：
Dempster, Tim
DOI：
10.1098/rspb.2008.0201
发表时间：
2008-07-07
影响因子：
4.7
作者：
Fox, Clive J.;Taylor, Martin;Wright, Peter J.
通讯作者：
Wright, Peter J.