Aida Sartimbul, Erfan Rohadi, Siva N. Ikhsani, Devita Listiyaningsih
The variation of morphometric and meristic characters among five populations of Sardinella lemuru and its environment was studied in waters of Bali Strait, northern and southern-east Java. Fish and hydro-oceanography samples were collected during transition and southeastern monsoon seasons (March-June) 2017 directly at five fishing grounds of S. lemuru. The fish was caught by gillnet. In the same time hydro-oceanography data have been recorded by using AAQ1183C sensor. Clustering analysis was carried out to examine the grouping of S. lemuru based on the morphometric and meristic characteristics. Furthermore, length-weight relationship and hydro-oceanography data were analyzed using Principal Component Analysis (PCA). The result shows that there were found two population groups based on morphological characteristics of five population of S. lemuru of Bali Strait, Northern and Southern-East Java waters. Further, the environmental parameters, mainly chlorophyll-a, pH, DO and water temperature affect morphological characteristics. This study suggested that environment factors play an important role in controlling the variety of fish phenotypes that are likely to affect the condition of its stock in the waters. © 2018, BIOFLUX SRL. All rights reserved.
Department of Aquatic Resource Management, Faculty of Fisheries and Marine Science, Brawijaya University, Jalan Veteran, Malang, 65145, East Java, Indonesia; Marine Resources Exploration and Management (MEXMA) Research Group, Brawijaya University, Malang, Indonesia; Information Technology, State Polytechnic of Malang, Malang, 65141, East Java, Indonesia
