scholarly journals Stomach Content Analysis of Tilapia Fish (Oreochromis mossambicus) in Talaga Lake Waters Donggala Regency

2020 ◽  
Vol 5 (3) ◽  
pp. 118-128
Author(s):  
Dirham Faried ◽  
Manap Trianto
Keyword(s):  
Body Shape ◽  
Animal Feed ◽  
Stomach Contents ◽  
Oreochromis Mossambicus ◽  
Stomach Content Analysis ◽  
Frequency Method ◽  
Anabaena Sp ◽  
Lake Waters ◽  
Surgical Sampling ◽  
Freshwater Consumption

Tilapia fish (Oreochromis mossambicus) is a type of freshwater consumption fish, flat body shape with grey, brown or black colour. The purpose of this study was to describe the types of food found in the stomach of tilapia fish (Oreochromis mossambicus) in Talaga Lake, Donggala Regency. This research was conducted in April 2019. The method used in this study was a volumetric occurrence frequency method by a surgical sampling of fish to extract the stomach and analyze it. Based on the results of the analysis of the stomach contents of the Mujair fish (Oreochromis mossambicus), two groups of feed were obtained, namely Vegetable food (Fitoplaknton) in the form of Navicula placentula, Schroederia segitera, Schoroederia anchora, Zignemopsis circumcaniratum, Anabaena sp, Oscillatoria princeps, Spirogyra protifica, Bacillaria sp, Nitzschia aetinastroides, Oedogonium sp, Coelastrum chodati, and animal feed (Zooplankton) in the form of Tubipex sp, Brachionus havanaensis, Cyclops sp, Carcinus sp, Arcella sp, Acetes sp.

scholarly journals FEEDING HABITS AND HELMINTH PARASITES OF SARDINE (S. PILCHARDUS) AND ANCHOVY (E. ENCRASICOLUS) IN THE ADRIATIC SEA

2015 ◽  
Vol 17 (1) ◽  
pp. 216 ◽  
Author(s):  
B. ZORICA ◽  
V. ČIKES KEČ ◽  
O. VIDJAK ◽  
I. MLADINEO ◽  
D. EZGETA BALIČ
Keyword(s):  
Diet Composition ◽  
Feeding Habits ◽  
Stomach Contents ◽  
Stomach Content Analysis ◽  
Helminth Parasites ◽  
Significant Difference ◽  
Prey Composition ◽  
One Year ◽  
Paratenic Hosts ◽  
Hysterothylacium Aduncum

We examined the stomach contents of two of the most economically and ecologically important small pelagic fish species, the sardine, Sardina pilchardus and the anchovy, Engraulis encrasicolus, obtained monthly from commercial purse-seine catches operating on Croatian fishing grounds during a one-year period (January–December, 2011). Both species generally showed a similar diet, with copepod and decapod larvae as dominant prey groups. The composition of anchovy and sardine stomach contents was not size- or sex-related, but throughout the year, a significant difference in diet composition was observed for each species as well as between species. Two gastrointerstinal helminths; the digenean Parahemiurus merus and nematode Hysterothylacium aduncum, were recorded during the stomach content analysis. Differences in population dynamics between the two parasites are congruent with differences in the prey composition of sardine and anchovy, reflecting fine-tuned interactions in the trophic web between parasites and intermediate or paratenic hosts included in the sardine and anchovy diet.

Sources of variability and comparability between salmonid stomach contents and isotopic analyses: study design lessons and recommendations

2011 ◽  
Vol 68 (1) ◽  
pp. 137-151 ◽  
Author(s):  
Mark R. Vinson ◽  
Phaedra Budy
Keyword(s):  
Stable Isotope ◽  
Study Design ◽  
Stomach Content ◽  
Stomach Contents ◽  
Stomach Content Analysis ◽  
Diet Overlap ◽  
Target Species ◽  
Relative Information ◽  
Isotopic Analyses ◽  
Diet Analyses

We compared sources of variability and cost in paired stomach content and stable isotope samples from three salmonid species collected in September 2001–2005 and describe the relative information provided by each method in terms of measuring diet overlap and food web study design. Based on diet analyses, diet overlap among brown trout, rainbow trout, and mountain whitefish was high, and we observed little variation in diets among years. In contrast, for sample sizes n ≥ 25, 95% confidence interval (CI) around mean δ15Ν and δ13C for the three target species did not overlap, and species, year, and fish size effects were significantly different, implying that these species likely consumed similar prey but in different proportions. Stable isotope processing costs were US$12 per sample, while stomach content analysis costs averaged US$25.49 ± $2.91 (95% CI) and ranged from US$1.50 for an empty stomach to US$291.50 for a sample with 2330 items. Precision in both δ15Ν and δ13C and mean diet overlap values based on stomach contents increased considerably up to a sample size of n = 10 and plateaued around n = 25, with little further increase in precision.

Fish on the roof of the world: densities, habitats and trophic position of stone loaches (Triplophysa) in Tibetan streams

2017 ◽  
Vol 68 (1) ◽  
pp. 53 ◽  
Author(s):  
Dean Jacobsen ◽  
Søren Kock Laursen ◽  
Ladislav Hamerlik ◽  
Karen Moltesen ◽  
Anders Michelsen ◽  
...  
Keyword(s):  
Trophic Position ◽  
Stomach Contents ◽  
Benthic Algae ◽  
Stomach Content Analysis ◽  
Food Sources ◽  
Fish Length ◽  
The Tibetan Plateau ◽  
Running Waters ◽  
Ecological Data ◽  
Percentage Cover

The fast increase in temperature on the Tibetan Plateau, with anticipated future changes in aquatic ecosystems and biodiversity, highlights the urgent need for ecological data on the sparsely studied Tibetan running waters. In the present study we surveyed eight Tibetan streams to obtain data on densities, feeding selectivity and trophic position of the stone loach Triplophysa. Benthic algae, detritus, macroinvertebrates and fish were quantified and collected for stable isotope and stomach content analysis. Triplophysa density (mean 0.70 individuals m–2, maximum 1.6 individuals m–2) decreased with altitude and increased with the percentage cover of fine substratum. Glacier-fed sites tended to have the lowest fish densities, whereas the highest densities were found near lakes. Mean fish length (4.1–9.6cm) was positively related to the percentage cover of coarse substratum. Triplophysa was omnivorous, but the composition of the stomach contents varied greatly between sites and among individuals. Algal matter was ingested at most sites, but macroinvertebrates (Chironomidae, Baetidae and Simuliidae) dominated the ingestion (average 50–100%). The trophic position of Triplophysa, identified from δ15N (‰) of the biota, varied between 2.6 and 4.2 among localities (mean 3.6) and was inversely related to the biomass of benthic algae, but unrelated to quantities of other potential food sources.

scholarly journals Food and Feeding Habits of Black Spot Cat Fish (Auchenoglanis biscutatus) from Lower River Benue, Makurdi

2018 ◽  
pp. 1-5
Author(s):  
Edem, Edem Thomas ◽  
Patience B. Opeh
Keyword(s):  
Feeding Habits ◽  
Black Spot ◽  
Stomach Contents ◽  
Stomach Content Analysis ◽  
Animal Origin ◽  
Natural Food ◽  
Plant Parts ◽  
Food Items ◽  
Wide Range ◽  
Food And Feeding

The present study is aimed to provide information on the food and feeding habit of adult Auchenoglanis biscutatus in Lower River Benue. The natural food of A. biscutatus in the Lower River Benue was studied from stomach contents of the fish. The stomach contents were analyzed using two methods; the frequency of occurrence and point methods. A total of 100 stomachs were randomly examined. Eleven major items constituted the diet of A. biscutatus. The stomach content analysis of A. biscutatus have shown that they fed on the various food items ranging from plant parts, detritus, seeds, digested food particles, fish parts, mollusc, sand/mud, insect parts and algae. This indicates that A. biscutatus is an omnivorous bottom feeder since; bottom dwelling immature insects dominated most of the food items of animal origin, digested food and detritus. A. biscutatus in Lower Benue River feeds on a wide range of food items which could make it to be regarded as an omnivore. Future attempts to culture this species must take cognizance of its food habits in the wild.

A Comparison of Stomach and Fecal Samples for Diet Analysis of Grey Kangaroos

1988 ◽  
Vol 15 (3) ◽  
pp. 249 ◽  
Author(s):  
GL Norbury
Keyword(s):  
Plant Species ◽  
Stomach Contents ◽  
Microscopic Analysis ◽  
Dry Weight ◽  
Stomach Content Analysis ◽  
Diet Analysis ◽  
Faecal Analysis ◽  
Differential Digestion ◽  
Free Ranging ◽  
Species Proportions

In an experiment with four captive eastern grey kangaroos, Macropus giganteus, microscopic analysis of both stomach contents and faeces did not reflect the ingested dry weight proportion of most plant species in a fed diet. However, close agreement was obtained by correcting for unidentifiable microscopic fragments of plants. This suggests that differential digestion may not be as important an artefact of microscopic diet analysis as previously reported. Provided corrections are made, faecal analysis may be as reliable as stomach content analysis for describing relative proportions of plant species in the diet of macropodids. In contrast, differences in proportions of plant species between stomach and faecal samples from free-ranging western grey kangaroos, Macropus fuliginosus, suggest that faecal analysis may not be suitable for quantitative studies of diet selection (comparisons of plant species proportions in the diet with species proportions in the field) in areas with heterogeneous vegetation. In these situations, samples of stomach contents are considered more appropriate.

What goes in does not come out: different non-lethal dietary methods give contradictory interpretation of prey selectivity in amphibians

2014 ◽  
Vol 35 (2) ◽  
pp. 255-262 ◽  
Author(s):  
Andrea Costa ◽  
Sebastiano Salvidio ◽  
Mario Posillico ◽  
Tiziana Altea ◽  
Giorgio Matteucci ◽  
...  
Keyword(s):  
Prey Selection ◽  
Central Italy ◽  
Stomach Contents ◽  
Stomach Content Analysis ◽  
Selection Strategy ◽  
Prey Selectivity ◽  
Faecal Analysis ◽  
Trophic Strategy ◽  
A Site ◽  
Significant Positive Selection

To date the most commonly used non-lethal methods in amphibian dietary studies are stomach flushing and faecal analysis. In this study, we compared the outcome of these two methods in interpreting prey selectivity when the available prey community in the environment is known. Stomach flushed contents and faeces were obtained from the same 27 individuals of the spectacled salamander (Salamandrina perspicillata) from a site in Central Italy. The interpretation of the population prey selection strategy varied in relation to the method used. Stomach content analysis suggested that salamanders were highly specialized on springtails, while faecal contents indicated a generalist trophic strategy. Prey selectivity indexes were also highly divergent: the analysis of stomach contents indicated a significant positive selection upon springtails, while exactly the opposite conclusion was obtained when faecal contents were analyzed. The results confirm that in amphibians, stomach analysis provides more reliable dietary data in comparison to faecal analysis. This is related to the fact that soft-bodied prey items tend to be more fully digested, disappearing in faeces while highly chitinized and less digestible prey taxa tend to increase their relative abundances in faeces.

scholarly journals Seasonal Dynamics of Stomach Contents, Trophic Level, Length-Weight Relationship and Condition Factor of Mystus bleekeri (Day, 1877)

2021 ◽  
Vol 50 (4) ◽  
pp. 907-918
Author(s):  
Sabuj Kanti Mazumder ◽  
Mrityunjoy Kunda ◽  
Mohammed Mahbub Iqbal ◽  
Lipi Rani Basak ◽  
Simon Kumar Das
Keyword(s):  
Trophic Level ◽  
Stomach Content ◽  
Condition Factor ◽  
Stomach Contents ◽  
Stomach Content Analysis ◽  
K Value ◽  
Weight Relationship ◽  
Food Fish ◽  
The Mean ◽  
Asian Catfish

The Asian catfish Mystus bleekeri is a popular food fish along with favored as an ornamental fish in Bangladesh. Till now detailed report on stomach contents, trophic level, length-weight relationship and condition factor of this fish species in the agro-climatic context of Bangladesh is lacking. Hence, the aims of this study were to describe the stomach content, trophic level, length-weight relationship (LWR) and condition factors of Mystus bleekeri collected from Dekhar Haor, Sylhet, Bangladesh from July 2017 to June 2018. A total of 600 specimens ranging from 6.9-24.6 cm total length (TL) and 5.7-72.4 g body weight (BW) was analyzed in this study. Stomach content analysis showed that the fish fed mostly on Mollusca with a frequency of occurrence (fo: 25.36%) and worms (fo: 21.68%), followed by plant matters (fo: 3.32%), Cladocerana (fo: 1.18%), Copepoda (fo: 0.95%), and Teleostei (fo: 0.36%). The estimated mean trophic level (TROPH) ranged from 2.35±0.13 in December to 3.02±0.23 in August, indicating that they are opportunistic feeder. The LWR analysis showed negative allometric growth (b<3) throughout the year. The values of the exponent b in the LWR (W=aLb) vary between 1.474 and 2.490.The mean K value was significantly higher in October indicating the heavier weight and better condition of the fish (P<0.05). The data obtained from this study would be useful to introduce sustainable management of Mystus bleekeri not only in Dekhar Haor but also in other inland waters of Bangladesh.

scholarly journals Stomach content analysis of a Dugong (Dugong dugon) from South Sulawesi, Indonesia

1993 ◽  
Vol 44 (1) ◽  
pp. 229 ◽  
Author(s):  
PLA Erftemeijer ◽  
Djunarli ◽  
W Moka
Keyword(s):  
Quantitative Analysis ◽  
Coastal Waters ◽  
Stomach Contents ◽  
Dry Weight ◽  
Stomach Content Analysis ◽  
Total Biomass ◽  
Feeding Selectivity ◽  
Individual Female ◽  
South Sulawesi ◽  
Total Dry Weight

A quantitative analysis of the stomach contents of an individual female dugong (Dugong dugon) caught by fishermen in February 1991 in the coastal waters of South Sulawesi, Indonesia, is presented. Of the total dry weight of digesta (about 3.4 kg), 98.9% consisted of seagrass material. Rhizome and root material of smaller pioneering genera (i.e. Halophila, Halodule, Cymodocea) accounted for 71.5% of the total dry weight. Enhalus acoroides dominated among leaf material (about 50%), but its contribution to the total biomass of the stomach contents was only 13.5%. Rhizome material of Enhalus and Thalassia was absent. The amount of sediment in the stomach was negligible. The results are compared with those from similar studies, and the implications for possible feeding selectivity are discussed.

scholarly journals Bioaccumulation of mercury in fishes of Jagadishpur Reservoir, Nepal

2019 ◽  
Vol 7 ◽  
pp. 17-23
Author(s):  
Prakash Acharya ◽  
Chhatra Mani Sharma ◽  
Shichang Kang ◽  
Lekhendra Tripathee ◽  
Junming Guo ◽  
...  
Keyword(s):  
Fish Species ◽  
Fish Community ◽  
Food Resource ◽  
Stomach Contents ◽  
Stomach Content Analysis ◽  
Trophic Levels ◽  
Fish Length ◽  
Mystus Vittatus ◽  
Total Hg ◽  
Food Resource Utilization

Stable isotope ratios of nitrogen (δ15N, ‰) and carbon (δ13C, ‰), accompanied by stomach contents were used to assess the food chain and trophic transfer of mercury in fifty-three marketable sized fish belonging to five species (Channa punctatus, Mystus vittatus, Nandus nandus, Puntius sophore and Xenentodon cancila) from the Jagadishpur Reservoir, Nepal. The highest total Hg concentration was found in X. cancila with an average of 800.42(±279.36) µg/kg exceeding the international marketing limit (500 mg/kg), a carnivorous species. However, except for some individuals of N. nandus, total Hg concentrations in other fish species in the present study were significantly lower than that limit. The fish community had at least two trophic levels (Δ15N > 5.6), C. punctatus with the highest and M. vittatus the lowest signatures of δ15N, which was also supported by the stomach content analysis. There was neither correlation between total Hg and δ15N nor connectivity in food resource utilization (based on δ13C), indicating no biomagnification among these fish species. In addition, Hg concentrations were not significantly correlated to total fish length in any of the species. Fish species in the present study have low Hg content accompanied by low biomagnification through the studied fish community.

Spatial and seasonal variability in the diet of round goby (Neogobius melanostomus): stable isotopes indicate that stomach contents overestimate the importance of dreissenids

2012 ◽  
Vol 69 (3) ◽  
pp. 573-586 ◽  
Author(s):  
Jaclyn M. Brush ◽  
Aaron T. Fisk ◽  
Nigel E. Hussey ◽  
Timothy B. Johnson
Keyword(s):  
Stable Isotopes ◽  
Trophic Position ◽  
Round Goby ◽  
Stomach Contents ◽  
Stomach Content Analysis ◽  
Neogobius Melanostomus ◽  
Important Prey ◽  
Round Gobies ◽  
Common Items ◽  
The Impact

Our results provide new information that diet, carbon source and trophic position of an invasive fish species, round goby ( Neogobius melanostomus ), varies seasonally, spatially and with body size in littoral habitats of Lake Ontario. Based on stomach contents and stable isotopes, round goby fed at a higher trophic position in the cooler, less productive Kingston Basin relative to the Bay of Quinte. Bay of Quinte round goby were more reliant on terrestrial carbon, whereas littoral carbon dominated in the Kingston Basin. Although stomach contents suggested dreissenids were the dominant prey item of round goby, stable isotope mixing models estimated that dreissenids were never >39% and 11% of the diet in Bay of Quinte and Kingston Basin, respectively. Stable isotopes indicated amphipods, chironomids and cladocerans were the most important prey, and were at times common items in stomach contents, but this varied with site, season and year. Given their high abundance, the impact of round gobies on the benthic biodiversity of the Great Lakes may be more significant than indicated by stomach content analysis alone.

Sign in / Sign up

Export Citation Format

Share Document