Booth D J
School of Life Sciences, University of Technology Sydney, PO Box 123, Broadway, NSW, 2007, Australia.
J Fish Biol. 2016 Aug;89(2):1501-6. doi: 10.1111/jfb.13043. Epub 2016 Jun 20.
The ability of two common, site-attached coral-reef fishes to return to their home corals after displacement was investigated in a series of field experiments at One Tree Island, southern Great Barrier Reef. The humbug Dascyllus aruanus was displaced up to 250 m, with 42% of individuals returning home, irrespective of body size, displacement, direction (up or across currents) and route complexity, while for the lemon damselfish Pomacentrus moluccensis 35% of individuals returned overall, with 33% from the greatest displacement, 100 m along a reef edge. Given that the home range of both species is <1 m(2) , over their 10+ year life span, the mechanisms and motivations for such homing ability are unclear but it may allow resilience if fishes are displaced by storm events, allowing rapid return to home corals.
在大堡礁南部的一树岛进行的一系列野外实验中，研究了两种常见的附着在珊瑚礁上的鱼类在被转移后返回其原生珊瑚的能力。黑背宅泥鱼被转移到250米远的地方，42%的个体回到了家，这与鱼的体型、转移距离、方向（顺流或逆流）和路线复杂程度无关；而对于摩鹿加雀鲷，总体上有35%的个体返回，在沿着礁缘被转移100米这一最大转移距离的情况下，有33%的个体返回。鉴于这两个物种的活动范围都小于1平方米，在它们10多年的寿命中，这种归巢能力的机制和动机尚不清楚，但如果鱼类因风暴事件而被转移，这种能力可能会使其具备恢复力，使其能够迅速回到原生珊瑚处。
