Analysis of stomach content of piscivorous fishes caught in Danau Panggang Peatland, South Kalimantan, Indonesia

Abstract

Abstract. Sofarini D, Herawati EY, Mahmudi M, Hertika AMS, Arfiati D, Musa M, Amin M, Supriharyono. 2019. Analysis of stomach content of piscivorous fishes caught in Danau Panggang Peatland, South Kalimantan, Indonesia. Biodiversitas 20: 3788-3793. The purpose of this study was to analyze the stomach content profile of piscivorous fishes caught at the reservaat station and the station without activity as The control station, in the Danau Panggang peatland. Sampling was carried out four times and the index of preponderance stomach content was determined in piscivorous fishes. The results showed there were nine fish species in the reservaat area, including Cryptopterus spp., Pangasius nieuwenhuisii, Chana striata, Anabas testudineus, Pangasius sp., Mastecembelus erythrotaenia, Macrognathus aculeatus, Mystus nigriceps, and Mystus nemurus. Their gut was dominated 89% by Chrysophyta, and 37.5% by Diatom and Navicula. In the area without activity, six species of fish were caught, including Cryptopterus spp, Pangasius nieuwenhuisii, Anabas testudineus, Pangasius sp, Mystus nigriceps, and Mystus nemurus, with 83% of their gut dominated by Diatom. The water temperature was 28.07-33.25º C, brightness (6-115 cm), pH of 4.23-6.97, dissolved oxygen (DO) (1.4-6.5 mg/L) and BOD (7.52-24.92 mg/L) i.e., water quality parameters that tend to be incompatible with the persistence of fishes. These limiting factors of peatland water and extreme conditions led to a limitation at availability of natural food for piscivorous fishes.

Plankton biodiversity in various typologies of inundation in Paminggir peatland, South Kalimantan, Indonesia on dry season

“…In line with plankton biodiversity indicators (diversity, evenness and quantity of taxa) in response to environmental typology conditions in peatland waters, surface temperature components were not affected by inundation typology patterns, while other water quality such as pH and dissolved oxygen as a limiting factor (Schagerl et al 2009;Chaparro et al 2018;Sofarini et al 2019;Siriwardana et al 2019) gave a significant response to inundation typology (Figure 4). Temperature values between 28.1 °C to 30.6 °C did not have an impact on the type of inundation both permanent and temporary.…”

“…The selection of sampling site for assessing plankton biodiversity in both rivers and lakes had been carried out with consideration of water flow (Astirin and Setyawan, 2000;Benarjee and Narasimha, 2013;Niken, 2019), activities in sampling site (Sentosa et al 2017;Sofarini et al 2019) and even using satellite imagery (Borro et al 2005;Ausseil et al 2007;Mccullough et al 2012;Torbick et al 2013;Dong et al 2014;Rapinel et al 2015;Li et al 2015; Thomas et al 2015; Pekel et al 2016). However, there is ecosystem type different from above condition that also vital to be protected.…”

Keterkaitan Kualitas Air dengan Keanekaragaman Zooplankton di Sungai Barito Kecamatan Marabahan Kabupaten Barito Kuala

“…Taqwa (2010,) menyatakan pH merupakan faktor pembatas bagi organisme yang hidup di suatu perairan. Perairan dengan pH yang terlalu tinggi atau rendah akan mempengaruhi ketahanan hidup organisme yang hidup di dalamnya (Sofarini et al, 2019).…”

Trophic level and position of Pterygoplichthys pardalis in Ciliwung River (Jakarta, Indonesia) ecosystem based on the gut content analysis

“…The differences in feeding habits of a particular type of fish tend to occur due to dissimilarities in the availability of food utilized in its natural habitat. Distribution of diet organisms, availability of food in the habitat, species of fish, and physical conditions influences feeding habits (de Oliveira and Isaac 2013; Perpetua et al 2013;Sofarini, et al 2019). It is also influenced by competition between individuals, predators, food chains from broad areas, and overlapping food niches (Effendi 2003;Pound et al 2011;Manna et al 2020).…”

“…Native fish tend to compete with P. pardalis due to the composition of a natural diet in the feeding habitat. The ability of fish to adapt to environmental conditions is a determinant of its adaptation in the river (Eya et al 2011;Sofarini et al 2019;Manna et al 2020). P. pardalis is able to survive in a polluted aquatic environment, however, it is also supported by morphological characters, such as an additional respiratory organ that functions as a respirator in poorly dissolved oxygen conditions (Armbruster 1998;Moroni 2015).…”