CSIR-National Institute of Oceanography, Regional Centre, 176, Lawson's Bay Colony, Visakhapatnam 530017, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
CSIR-National Institute of Oceanography, Regional Centre, 176, Lawson's Bay Colony, Visakhapatnam 530017, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
Mar Pollut Bull. 2023 Jul;192:114977. doi: 10.1016/j.marpolbul.2023.114977. Epub 2023 May 9.
To examine the influence of anthropogenic activities on the marine ecosystem near the coastal waters of the port city, Kakinada, a study was conducted to investigate the abundance of heterotrophic, indicator and pathogenic bacteria during the spring inter monsoon (SIM) and southwest monsoon (SWM) seasons. A drastic change in the marine bacteria due to the input of allochthonous bacteria during SWM was noticed. An order of magnitude higher abundance of indicators (Escherichia coli and Enterococcus faecalis) and bacterial pathogens (Proteus mirabilis and Pseudomonas aeruginosa) was observed during SWM. In contrast, Chlorophyll-a, heterotrophic bacterial abundance, Aeromonas hydrophila and Klebsiella pneumoniae were higher during SIM. A significant increase in some of the indicator and pathogenic bacterial abundance due to moderate rainfall suggests that the improper drainage system in the city could spread these bacteria, posing a considerable threat to both environment and human health.
为了研究人为活动对港口城市卡基纳达沿海海域海洋生态系统的影响，本研究调查了春季季风间歇期（SIM）和西南季风期（SWM）期间异养菌、指示菌和病原菌的丰度。在 SWM 期间，由于外源细菌的输入，海洋细菌发生了剧烈变化。在 SWM 期间，观察到指示菌（大肠杆菌和粪肠球菌）和病原菌（奇异变形杆菌和铜绿假单胞菌）的丰度高出一个数量级。相比之下，在 SIM 期间，叶绿素 a、异养菌丰度、嗜水气单胞菌和肺炎克雷伯菌较高。由于适度降雨，一些指示菌和病原菌的丰度显著增加，这表明城市中不完善的排水系统可能会传播这些细菌，对环境和人类健康构成相当大的威胁。
