Chironomid taxa in the diets of six co-occurring gobiids (Caucasian dwarf goby Knipowitschia caucasica; monkey goby, Neogobius fluviatilis; racer goby, Babka gymnotrachelus; round goby, Neogobius melanostomus; bighead goby, Ponticola kessleri; and western tubenose goby, Proterorhinus semilunaris) were investigated in a freshwater habitat in Ukraine. Overall, 32 chironomid morphotypes were identified, among which the most abundant were Polypedilum convictum, Cricotopus sylvestris, Glyptotendipes spp., and Endochironomus albipennis. The racer and monkey gobies were characterized by the highest diversity of chironomid morphotypes in their diets, while the bighead goby by the lowest diversity. Highest similarities of chironomid assemblages in gut contents were observed among the monkey, racer, and round gobies as well as between the bighead and tubenose gobies, while the lowest similarity was observed between the monkey goby and Caucasian dwarf, tubenose, and bighead gobies. Mean sizes of chironomids in the gut contents of different gobiids varied; Caucasian dwarf and tubenose gobies consumed significantly smaller chironomids. Diversity of chironomid taxa in the diets of gobies depended on the type of each fishes’ habitat. Tubenose and bighead gobies preyed mainly on phytophilous chironomids; the monkey and round gobies preferred bottom-dwelling, burrowing chironomids; while Caucasian dwarf and racer gobies consumed both phytophilous and bottom-dwelling, burrowing taxa.

摇蚊类群的六个共同存在的gobiids饮食（高加索侏儒虾虎鱼Knipowitschia高加索;猴虾虎鱼，Neogobius fluviatilis ;赛车虾虎鱼，巴布卡gymnotrachelus ;圆形虾虎鱼，Neogobius melanostomus ;花鲢虾虎鱼，Ponticola kessleri ;和西部tubenose虾虎鱼，Proterorhinus半月）在乌克兰的淡水栖息地进行了调查。总体而言，确定了 32 种摇蚊形态类型，其中最丰富的是Polypedilum convictum、Cricotopus sylvestris、Glyptotendipes spp. 和Endochironomus albipennis. 赛马和猴子虾虎鱼的饮食中摇蚊形态类型的多样性最高，而鳙鱼虾虎鱼的多样性最低。在猴子、赛马和圆形虾虎鱼以及大头虾虎鱼和圆头虾虎鱼之间观察到肠道内容物中摇蚊组合的最高相似性，而在猴虾虎鱼和高加索矮人、圆头虾虎鱼和大头虾虎鱼之间观察到的相似度最低。不同戈壁科动物肠道内容物中摇蚊的平均大小不同；白种侏儒和管鼻虾虎鱼消耗的摇蚊明显较小。虾虎鱼饮食中摇蚊类群的多样性取决于每种鱼类的栖息地类型。晚香鱼和鳙鱼虾虎鱼主要捕食植物性摇蚊；猴子和圆形虾虎鱼更喜欢底栖、穴居的摇蚊；