Stomach dissection results from fish caught in Chesapeake Biological Laboratory's seine survey in Summer 2022

This dataset includes results from the dissection of stomach contents of fish caught from a yearly seine survey (May-October) conducted by Chesapeake Biological Laboratory (CBL). The fish were kept based on morphology, where those that could physically consume a mysid shrimp were kept and frozen to be dissected at a later date. The dissection data include the individual fish identification number, date the fish was caught, location fish was caught, species of fish, total length of fish, full and empty weights of the fish, and the presence of various prey items (unidentifiable material, amphipods, polychaetes, mysids, unidentifiable crustaceans, isopods, barnacles, bivalves, miscellaneous larvae, insects, fish, foliage, diatoms, algae, potential parasites), the items found in the stomachs, and comments about each dissection. Dissections took place from September 2022 to January 2023. Laboratory scalpels and forceps were used to remove the organs from the fish, and a dissecting microscope was used to identify the stomach contents visually. Sampling was done by various students and technicians at Chesapeake Biological Laboratory, and dissections were done by Lael Collins.

本数据集涵盖切萨皮克生物实验室（Chesapeake Biological Laboratory, CBL）开展的年度围网调查（5月至10月）所捕获鱼类的胃容物解剖结果。研究人员依据形态学特征筛选样本：凡可物理摄食糠虾（mysid shrimp）的个体均被留存并冷冻，以待后续解剖。本次解剖数据包含以下内容：鱼类个体识别编号、捕获日期、捕获点位、鱼类物种、鱼体总长度、鱼体全重与空重，各类猎物类别的检出情况（含不可辨识物质、端足类（amphipods）、多毛类（polychaetes）、糠虾、不可辨识甲壳类、等足类（isopods）、蔓足类（barnacles）、双壳类（bivalves）、各类幼虫、昆虫、鱼类、植物碎屑（foliage）、硅藻（diatoms）、藻类（algae）以及潜在寄生虫）、胃内检出的具体物项，以及每例解剖的备注信息。解剖工作于2022年9月至2023年1月间开展，实验人员使用解剖手术刀（scalpels）与镊子（forceps）取出鱼类内脏，并借助解剖显微镜（dissecting microscope）目视鉴定胃容物组成。本次采样由切萨皮克生物实验室的多名学生与技术人员完成，解剖操作均由莱尔·柯林斯（Lael Collins）负责。