Tezel Rifat, Acar Ümit, Yapıcı Sercan
Faculty of Fisheries, Muğla Sıtkı Koçman University, Muğla, Türkiye.
Bayramiç Vocational School, Çanakkale Onsekiz Mart University, Çanakkale, Türkiye.
PeerJ. 2025 Jan 20;13:e18784. doi: 10.7717/peerj.18784. eCollection 2025.
This study aims to determine and compare the reference values of the haematological and biochemical blood parameters of two fish species collected from the Gökova Bay (Muğla, South-Western of Türkiye): the non-native and invasive Randall's threadfin bream, and the native Common pandora, . Both species inhabit the same environment and compete for resources. Blood samples were collected from a total of 100 fish samples (50 and 50 ) which were caught from a depth of 30 to 60 meters between February 2023 and July 2024. Therefore, sampling could be carried out in summer and winter seasons when the water temperature varies significantly. The results indicate that red blood cell (RBC), haemoglobin (Hb) and haematocrit (Hct) levels significantly increases in summer ( < 0.05). Statistical analyses revealed that all of the haematological parameters of are higher than the ( < 0.05). In terms of serum biochemical parameters, glucose (GLU), triglyceride (TRIG), cholesterol (CHOL), total protein (TP), aspartate aminotransferase (AST) and alkaline phosphatase (ALP) levels of two species had showed no significant difference in both summer and winter samples ( > 0.05). However, serum alanine aminotransferase (ALT) levels of were statistically significant different compared to in summer and winter samples ( < 0.05). Additionally, the highest lactate dehydrogenase (LDH) value was measured from in summer sampling and this was found to be significantly different from other groups ( < 0.05). Multidimensional scaling (MDS) analysis revealed differences between the blood parameter results of and individuals. This study provides important data about the physiological adaptations of haematological and biochemical blood parameters of the two species to environmental factors. The similarity in haematological and biochemical parameters revealed the possibility that could distribute to new habitats where is distributed. This suggests a further potential distribution of the invasive and the need for a careful monitoring.
非本地入侵物种兰氏金线鲷和本地物种普通真鲷。这两种物种栖息在相同环境中并竞争资源。在2023年2月至2024年7月期间，从30至60米深处捕获的总共100个鱼样本（50条兰氏金线鲷和50条普通真鲷）中采集了血液样本。因此，能够在水温差异显著的夏季和冬季进行采样。结果表明，夏季红细胞（RBC）、血红蛋白（Hb）和血细胞比容（Hct）水平显著升高（P<0.05）。统计分析显示，兰氏金线鲷的所有血液学参数均高于普通真鲷（P<0.05）。就血清生化参数而言，两种物种的葡萄糖（GLU）、甘油三酯（TRIG）、胆固醇（CHOL）、总蛋白（TP）、天冬氨酸转氨酶（AST）和碱性磷酸酶（ALP）水平在夏季和冬季样本中均无显著差异（P>0.05）。然而，夏季和冬季样本中，兰氏金线鲷的血清丙氨酸转氨酶（ALT）水平与普通真鲷相比具有统计学显著差异（P<0.05）。此外，夏季采样中从兰氏金线鲷测得的乳酸脱氢酶（LDH）值最高，且发现与其他组有显著差异（P<0.05）。多维尺度分析（MDS）揭示了兰氏金线鲷和普通真鲷个体血液参数结果之间的差异。本研究提供了关于这两种物种血液学和生化血液参数对环境因素生理适应的重要数据。血液学和生化参数的相似性揭示了兰氏金线鲷可能分布到普通真鲷所分布的新栖息地的可能性。这表明入侵物种兰氏金线鲷有进一步潜在分布的可能，需要进行仔细监测。
