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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Movement and growth of juvenile (age 0 and 1+) tautog (Tautoga onitis [L.]) and cunner (Tautogolabrus adspersus [Walbaum]) in a southern New Jersey estuary
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Movement and growth of juvenile (age 0 and 1+) tautog (Tautoga onitis [L.]) and cunner (Tautogolabrus adspersus [Walbaum]) in a southern New Jersey estuary

机译：新泽西州南部河口的幼仔（0岁和1岁以上）tautog（Tautoga Onitis [L.]）和cunner（Tautogolabrus adspersus [Walbaum]）的运动和生长

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The extent to which individual juvenile fish occupy specific sites is largely unknown. This complicates efforts to identify optimum habitats and habitat-specific information such as growth and mortality rates which, in turn, can influence recruitment success. Using tag-recapture information, we examined movements and growth of juvenile tautog (Tautoga onitis [L.]) and cunner (Tautogolabrus adspersus [Walbaum]) in Great Bay-Little Egg Harbor estuaries in southern New Jersey. Fishes were trapped, tagged with small disks (bee tags), released in an embayment (mean depth=2.5 m, mean salinity=28 per thousand ) adjoining a tidal creek and recaptured from April through November 1992. Of 729 tautog (25-187 mm TL) released, there were 228 recaptures (31%) of 114 individuals, with a high percentage of recaptured individuals (37%) caught more than once (up to 13 times) during nearly 3 months at liberty. Of 410 cunner (24-99 mm TL) released, there were 95 recaptures (23%) of 66 individuals of which 30% were recaptured repeatedly (up to 6 times) over a 2-month period in summer and fall. Recaptured individuals of both species generally moved relatively little (< 22 m) from the common release site even though recapture efforts occurred over the scale of meters to kilometers. Age 1+ individuals tended to travel shorter distance than age 0 individuals for both species. The short distance traveled and high recapture rates indicate that these species exhibited strong site fidelity. The mean growth of both species was 0.25 mm day~(-1) from spring through fall although growth varied between species, age class and season. These movement and growth characteristics indicate that at least some of the 0+ individuals "settle and stay" and 1+ individuals "return and stay" in estuarine habitats. The high site fidelity, in this and other studies, implies that growth rates may be good measures of habitat quality for tautog and cunner at least from spring through fall.
机译：个别幼鱼占据特定地点的程度在很大程度上尚不清楚。这使确定最佳栖息地和特定于栖息地的信息（例如生长率和死亡率）的工作复杂化，而这些信息反过来又可能影响招聘成功。使用标签捕获信息，我们在新泽西州南部的大湾-小蛋港河口中检查了幼仔tautog（Tautoga Onitis [L.]）和cunner（Tautogolabrus adspersus [Walbaum]）的运动和生长。捕获鱼，用小圆盘（蜜蜂标签）标记，在潮汐小溪旁的鱼塘（平均深度= 2.5 m，平均盐度= 28 /千）中释放，并于1992年4月至11月重新捕捞。共有729个auto（25-187） （mm TL）被释放，114个人中有228人被重新捕获（31％），其中很大比例的被重新捕获的个人（37％）在近3个月的时间内被捕一次以上（多达13次）。在释放的410名士兵（24-99毫米TL）中，有66名个体进行了95次重新捕获（23％），其中30％在夏季和秋季的两个月内被重复捕获（最多6次）。尽管捕获工作在几米到几千米的范围内进行，但被捕获的这两个物种的个体通常都很少（<22 m）从共同释放地点移动。对于这两个物种，年龄大于1岁的个体倾向于比距离年龄小于0岁的个体更短的距离。短距离旅行和高捕获率表明这些物种表现出较强的地点保真度。从春季到秋季，这两个物种的平均生长为0.25 mm day〜（-1），尽管生长在物种，年龄类别和季节之间有所不同。这些运动和生长特征表明，在河口栖息地中，至少有0+个人“定居并停留”和1+个人“返回并停留”。在这项研究和其他研究中，高保真度意味着至少从春季到秋季，生长速率可能是tautog和cunner栖息地质量的良好指标。

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