Species composition of boiled-dried fish and shrimp, Gota-niboshi, produced around Lake Kasumigaura, eastern Japan

Abstract

Species composition of the traditional boiled-dried fish and shrimp, Gota-niboshi, processed and sold around Lake Kasumigaura, Ibaraki Prefecture, eastern Japan were examined using samples purchased at 11 processing shops from August to September 2018. A total of 51,231 individuals representing six families and ten species were recorded throughout the study period. The most abundant species were the shrimp species Macrobrachium nipponense (43.4% of the total number of individuals collected during this study), the gobiid Tridentiger brevispinis (29.6%), the salangid Salangichthys microdon (25.3%), the osmerid Hypomesus nipponensis (0.8%) and the gobiid Acanthogobius lactipes (0.7%). A similarity index indicated differences in species composition of Gota-niboshi between shop groups. Such differences were not associated with any data regarding shop localities or purchase dates of Gota-niboshi samples.