Marine Studies Section, Center for Environment and Water, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran, Kingdom of Saudi Arabia.
College of Petroleum Engineering and Geosciences, King Fahd University of Petroleum and Minerals, Dhahran, Kingdom of Saudi Arabia.
J Fish Biol. 2019 Nov;95(5):1184-1194. doi: 10.1111/jfb.14116. Epub 2019 Sep 3.
In this study we lay the groundwork for sustainability-oriented fisheries management, by estimating parameters the life history of orange-spotted trevally Carangoides bajad as well as trends of abundance in coral-reef habitats. We observed a new record of maximum size of 720 mm fork length. Carangoides bajad is a moderately long-lived (14 years) and slow-growing (K = 0.085 year ) carangid species, closer to a K-selection species, with higher vulnerability to fishing and lower rates of recovery when the population level is low. Growth and biological composition in terms of length and age categories do not differ between the sexes, but females become mature faster. Reproductively active months (May-August) overlapped with those from Emirati waters further south. The abundance index showed a pronounced drop during 1990-1993, possibly in connection with habitat deterioration during the Gulf War (1990-1991) oil spill. The index increased gradually from 1994 and has fluctuated close to the reference level of 1985 up to the present. Considering the findings of large-sized and old-age individuals and abundance index from coral reefs close to its level three decades back, the C. bajad stock in the western part of The Gulf appears to be in healthy exploitation status despite growing harvesting rates.
在这项研究中，我们通过估计橙点鲷的生活史参数和珊瑚礁栖息地的丰度趋势，为面向可持续性的渔业管理奠定了基础。我们观察到了一个新的最大体长记录，为 720 毫米叉长。橙点鲷是一种中等长寿（14 年）和生长缓慢（K 值为 0.085 年）的鲷科鱼类，更接近 K 选择物种，对捕捞的脆弱性更高，当种群水平较低时，恢复速度也更低。在长度和年龄类别方面，雌雄之间的生长和生物组成没有差异，但雌性成熟更快。生殖活跃期（5 月至 8 月）与阿联酋南部水域的生殖活跃期重叠。1990 年至 1993 年期间，丰度指数明显下降，可能与海湾战争（1990 年至 1991 年）期间的石油泄漏导致的栖息地恶化有关。自 1994 年以来，指数逐渐增加，并在接近 1985 年参考水平的基础上波动至今。考虑到在接近其三十年前水平的珊瑚礁中发现的大型和老年个体以及丰度指数，尽管捕捞率不断上升，但 Gulf 西部的 C. bajad 种群似乎处于健康的开发状态。
