Biology Department, Faculty of Science, Çankırı Karatekin University, Çankırı, Turkey.
Health Services Vocational School, Environmental Health and Environmental Sciences Program, Gazi University, Ankara, Turkey.
Environ Monit Assess. 2022 Jul 18;194(8):590. doi: 10.1007/s10661-022-10302-6.
In aquatic ecosystems, organisms are in a close relationship with each other. While this relationship is sometimes beneficial for both species, it can sometimes be harmful to one species. This study aimed to investigate the effects of colonized zebra mussels Dreissena polymorpha on the growth parameters and total hemocyte counts of the narrow-clawed crayfish Astacus leptodactylus from Eğirdir Lake (Turkey). Zebra mussels were found on various body parts of crayfish and the most intense (44.7%) colonization was in the carapace region. There were significant differences between various biometric data and ratios of the narrow-clawed crayfish with epibiont D. polymorpha and without epibiont D. polymorpha (the control group) in terms of total length, abdomen width, arm length and chelae length, carapace width/carapace length, carapace length/abdomen length, abdomen width/carapace width, and chelae width/chelae length (p < 0.05). When the total hemocyte counts were examined, lower values were obtained in the narrow-clawed crayfish with zebra mussels compared to the control group (p < 0.05). As a result, epibiont organisms have negative effects on the health and growth status of the host organisms considering total hemocyte counts and biometric data.
在水生生态系统中，生物彼此之间存在着密切的关系。虽然这种关系有时对两个物种都有益，但有时也会对一个物种造成伤害。本研究旨在探讨斑马贻贝（Dreissena polymorpha）对来自土耳其埃格迪尔湖（Eğirdir Lake）的螯虾（Astacus leptodactylus）生长参数和总血细胞计数的影响。在螯虾的各种身体部位都发现了斑马贻贝，甲壳区域的寄生最为严重（44.7%）。带有和不带有斑马贻贝（对照组）的螯虾的各种生物计量数据和比例之间存在显著差异，包括全长、腹宽、臂长和螯长、甲壳宽/甲壳长、甲壳长/腹长、腹宽/甲壳宽和螯宽/螯长（p<0.05）。当检查总血细胞计数时，与对照组相比，带有斑马贻贝的螯虾的总血细胞计数较低（p<0.05）。因此，考虑到总血细胞计数和生物计量数据，附着生物对宿主生物的健康和生长状况有负面影响。
