Diet Preferences of Small Fishes at Setiu Lagoon, Malaysia

Abstract

Abstract. This study aimed to investigate diet preferences of small fishes in a shallow coastal lagoon through analysis of their stomach contents. The 24 hours samplings was done during high tide at selected stations; mangrove areas and seagrass areas, both located at coastal lagoon of Setiu, Terengganu (N 5 o 41.75' E 102 o 42' to N 5 o 42.5' E 102 o 41'). The small fishes were caught using seine nets (0.5 cm 2 ), while the zooplanktons were collected using Kitahara zooplankton net (110 microns) then were preserved. All items found in the stomach were compared with the composition of the zooplanktons obtained from the water samples. During the sampling time, 10 species of small fishes were caught. There were higher number of fishes and zooplanktons caught from the seagrass areas than the mangrove areas. Nonetheless, diversity of zooplankton was higher in the mangroves. Overall, the number of harpacticoid was higher than all other food items found in the stomach of fishes caught from both areas despite the high number of calanoid copepods found in the lagoon.

DIET COMPOSITION, CONDITION FACTOR AND INTESTINAL COEFFICIENT OF THE FISH Astyanax lineatus REFLECT THE ANTHROPOGENIC EFFECTS ON STREAMS IN CENTRAL BRAZIL

“…Only adult fishes were used to avoid potential differences that can occur during the ontogeny (Gatz 1979). The method used for diet analysis consisted of retrieving the stomach through a lateral incision, on the right side, initiating in the anal opening and ending next to the operculum region (Kassim et al 2018). The stomachs were stored in 2 mL tubes with 70% ethanol solution.…”

Effect of Different Salinities Gradient on Fatty Acid Composition, Growth, Survival and Reproductive Performance of Moina macrocopa (Straus 1820) (Crustacea, Cladocera)

“…This anthropogenic interference has both directly and indirectly degraded the natural environment of Setiu Wetland lagoon. Major concerns regarding anthropogenic activities at Setiu Wetlands include resulting water contamination, coastal destruction and, productivity impact (Zaleha et al, 2018). The increase of water sea levels and, coastal erosions have contributed tremendously to salinity changes (Ekaterina et al, 2017) and, have damaged aquatic habitat and ecosystems (Reliana, 2012).…”

“…Aquatic organisms are sensitive towards changes in water condition. Small fishes are more opportunistic in nature that they can adapt and survive in stressful conditions found in shallow lagoons (Zaleha et al, 2018). Zooplankton is an important community in the aquatic ecosystem for energy transfer from the primary producer to fishes (Soni and Thomas, 2014).…”