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首页> 外文学位 >Life History and Management Methods for Blueline Tilefish ( Caulolatilus microps) from the United States Mid-Atlantic Region
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Life History and Management Methods for Blueline Tilefish ( Caulolatilus microps) from the United States Mid-Atlantic Region

机译：美国中大西洋地区蓝线鱼（Caulolatilus microps）的生活史和管理方法

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摘要

Blueline tilefish (Caulolatilus microps) have recently undergone an increase in landings from waters off the US Mid-Atlantic region (Virginia-Massachusetts). Currently, life history characteristics of blueline tilefish in this area are undescribed. Additionally, appropriate indices of population abundance are not available for this region, necessitating the use of data-limited management methods to set restrictions for harvest of blueline tilefish in this area. This dissertation describes growth and reproductive characteristics of blueline tilefish caught off the coast of Virginia and explores improvements of data-limited management methods that have been applied to blueline tilefish in the US Mid-Atlantic. Blueline tilefish from the US Mid-Atlantic show a similar growth pattern to fish caught off North and South Carolina prior to the rise of commercial fishing for blueline tilefish in this area. This growth pattern is dissimilar from that observed more recently for fish from the US South Atlantic (east coast of Florida-North Carolina), with fish in the US Mid-Atlantic growing more slowly to larger maximum lengths. Blueline tilefish from the US Mid-Atlantic are gonochoristic multiple batch spawners that spawn, on average, every 1.44 days from May-November, with annual fecundities up to 50,000,000 oocytes for the largest individuals. Batch fecundity is correlated with total length in a similar fashion as seen previously in the US South Atlantic. These studies are the first to characterize growth and reproduction of blueline tilefish from the US Mid-Atlantic. Sensitivities of modal estimates and variabilities of total allowable catch (TAC), from data-limited management procedures (MP) applicable to blueline tilefish, to input values were analyzed to determine which inputs most impacted TAC. Natural mortality and mean maximum length from the von Bertalanffy growth equation had the greatest impacts. A composite MP was developed to incorporate distributions of TAC estimates from multiple MPs into a single, combined distribution that could be used to estimate a composite TAC. These analyses provide information that may enhance decision-making for management of data-limited fish stocks, such as blueline tilefish.
机译：蓝线瓦鱼（Caulolatilus microps）最近在美国中大西洋地区（Virginia-Massachusetts）以外水域的着陆量增加了。目前，该地区的蓝纹鱼的生活史特征尚未得到描述。此外，该地区没有适当的种群数量指数，因此必须使用数据受限的管理方法来设置该地区蓝瓦鱼的收获限制。这篇论文描述了在弗吉尼亚海岸附近捕捞的蓝纹tile鱼的生长和繁殖特性，并探索了在美国中大西洋地区蓝纹tile鱼所应用的数据受限管理方法的改进。来自美国中大西洋的蓝纹瓦鱼显示出与北卡罗来纳州和南卡罗来纳州捕捞的鱼类相似的生长方式，此地区的蓝纹瓦鱼商业捕捞兴起。这种生长方式与最近从美国南大西洋（佛罗里达州至北卡罗来纳州东海岸）观察到的鱼类不同，在美国中大西洋的鱼类生长较慢，最大长度更长。来自美国中大西洋的蓝纹瓦鱼是一种受角冲的多批次产卵器，平均从5月至11月每1.44天产卵一次，最大个体的年卵生能力可达5000万个。批处理繁殖力与总长度相关联，其方式与美国南大西洋地区以前类似。这些研究是第一个描述来自美国中大西洋的蓝纹tile鱼生长和繁殖特征的研究。从适用于蓝线瓦鱼的数据受限管理程序（MP）到输入值，对模态估计和总允许捕捞量（TAC）的敏感性进行了分析，以确定哪些输入对TAC的影响最大。 von Bertalanffy生长方程式的自然死亡率和平均最大长度影响最大。开发了复合MP，以将来自多个MP的TAC估计的分布合并到单个组合分布中，该分布可用于估计复合TAC。这些分析提供的信息可能会增强管理数据受限的鱼类种群（例如蓝瓦鱼）的决策能力。

著录项

  • 作者

    Schmidtke, Michael A.;

  • 作者单位

    Old Dominion University.;

  • 授予单位 Old Dominion University.;
  • 学科 Biology.;Water resources management.;Wildlife management.
  • 学位 Ph.D.
  • 年度 2017
  • 页码 142 p.
  • 总页数 142
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 古生物学;
  • 关键词

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