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Movement patterns, home range, and habitat utilization of adult kelp bass Paralabrax clathratus in a temperate no-take marine reserve

机译:温带不捕捞海洋保护区成年海带鲈Paralabrax clathratus的运动模式,活动范围和栖息地利用

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Home range, activity patterns, site fidelity and habitat preference of the kelp bass Para-labrax clathratus were determined from 12 adult fish tracked using acoustic telemetry within a temperate no-take marine reserve (0.13 km~2). Home range sizes ranged from 33 to 11 224 m~2, averaging 3349 +- 3328 m~2 (+-SD), but did not correlate with fish size. Fish were active and occupied similar-sized activity spaces during both day and night. Kelp bass exhibited a high degree of site fidelity, remaining resident in core areas for up to 3 yr. Relative to the total amount of available habitat, kelp bass showed a habitat selection preference for rock boulder, rock rubble and kelp habitat. These habitats offer high vertical relief, shade and large holes for shelter, and may attract and facilitate prey capture. Average home range size was 3% of the area of the reserve. Only 1 of 12 tracked fish crossed the reserve boundary, but this accounted for less than 5 % of the fish's time. Natural habitat breaks along the reserve boundary may have further limited adult kelp bass movements. The small home ranges and high site fidelity of kelp bass in this reserve indicate that the reserve is effective in protecting the resident adult stock.
机译:在温带不捕捞的海洋保护区(0.13 km〜2)内,用声遥测法从12条成年鱼中确定海带鲈Para-labrax clathratus的栖息地范围,活动模式,保真度和栖息地偏好。家庭范围的大小在33至11224 m〜2之间,平均为3349 +-3328 m〜2(+ -SD),但与鱼的大小无关。鱼是活跃的,白天和黑夜都占据着类似大小的活动空间。海带低音表现出高度的现场保真度,可在核心区域停留长达3年。相对于可用栖息地的总量,海带鲈表现出对岩石巨石,碎石和海带栖息地的选择偏好。这些栖息地提供了很高的垂直浮雕,阴影和大洞作为庇护所,并可能吸引并促进捕获猎物。平均房屋范围是保护区面积的3%。在12条被追踪的鱼中,只有1条越过保护区边界,但这只占鱼时间的不到5%。沿保护区边界的自然栖息地破坏可能会进一步限制成年海带低音运动。该保护区的海带鲈的家庭分布范围较小且保真度较高,这表明该保护区可有效保护当地成年种群。

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