Longline trap data collected during R/V Apalachee cruise AP-1415 in the DeSoto Canyon from 2014-10-02 to 2014-10-10.

This dataset reports species caught using longline and trap sets during the R/V Apalachee cruise AP-1415 from October 02 to October 10, 2014. The objectives of this project were 1) to use large chevron traps and demersal longlines to describe and examine differences in the species assemblages and relative abundances of demersal fishes associated with the eastern and western walls of DeSoto Canyon and the adjacent continental slope (75-2000 m deep), 2) to collect liver and bile samples from dominant species to examine spatial and depth-mediated differences in exposure to polycyclic aromatic hydrocarbons (PAHs), 3) to collect muscle tissue from all species for stable isotope analyses including using radiocarbon ratios to examine attenuation of long-term exposure to hydrocarbons, and 4) to collect specimens and samples (including curation of new species) to aid in resolving phylogenetic uncertainties and understanding life history traits in collected taxa. This dataset contains the metadata and sample data associated with these objectives.

本数据集记录了2014年10月2日至10月10日期间，在阿帕拉契号（R/V Apalachee）研究船AP-1415航次中，使用延绳钓与陷阱装置捕获的物种信息。本项目的研究目标如下：1）利用大型人字形陷阱与底栖延绳钓，描述并分析德索托海谷（DeSoto Canyon）东西两侧崖壁及邻近大陆坡（水深75-2000米）区域的底栖鱼类的物种组合与相对丰度差异；2）采集优势物种的肝脏与胆汁样本，以探究空间与水深介导的多环芳烃（polycyclic aromatic hydrocarbons, PAHs）暴露差异；3）采集所有物种的肌肉组织，用于稳定同位素分析，包括利用放射性碳比值探究长期烃类暴露的衰减情况；4）采集标本与样本（含新物种的标本整理工作），以助力解决分类群的系统发育不确定性问题，并明晰其生活史特征。本数据集包含与上述研究目标相关的元数据与样本数据。