Diet Composition of Sergestid Shrimp Acetes serrulatus from the Coastal Waters of Kukup, Johor, Malaysia

2011 ◽  
Vol 6 (7) ◽  
pp. 809-815 ◽  
Author(s):  
S.Y. Oh ◽  
A. Arshad ◽  
S.B. Japar ◽  
A.A Nor Azwady ◽  
S.M.N. Amin
Keyword(s):  
Coastal Waters ◽  
Diet Composition

scholarly journals Feeding activity and diet composition of round goby (Neogobius melanostomus, Pallas 1814) in the coastal waters of SE Baltic Sea

2015 ◽  
Vol 44 (4) ◽  
Author(s):  
Artūras Skabeikis ◽  
Jūratė Lesutienė
Keyword(s):  
Baltic Sea ◽  
Coastal Waters ◽  
Diet Composition ◽  
Feeding Activity ◽  
Macoma Balthica ◽  
Round Goby ◽  
Benthic Fauna ◽  
Neogobius Melanostomus ◽  
The Body ◽  
Gut Contents

AbstractFeeding activity and diet composition of round goby were investigated in the south-eastern Baltic Sea, the Lithuanian coastal waters during May-October 2012 in order to determine main feeding objects and seasonal periods when native fauna could be most affected by predation of this highly invasive species. In total, prey represented by 18 taxa was found in the gut contents of dissected fish. Feeding activity of round goby varied depending on the body size, sex and stage of the reproduction period. The gut contents of < 50 mm specimens were dominated by zooplanktonic and meiobenthic organisms, whereas larger individuals (50–99 mm) shifted to amphipods and mollusks. Individuals of the intermediate 100-200 mm length had a variable diet, changing depending on the season; in spring they mostly preyed on Macoma balthica, in summer − on polychaetes, while in autumn the contribution of Mytilus trossulus and fish considerably increased in their diet. Diet composition of individuals ≥ 200 mm was relatively constant in the course of the study with substantial preference to M. balthica. These findings imply that benthic fauna, particularly a newly settled generation of epibenthic mollusks in autumn is under strong predatory pressure of the round goby.

Diet composition of juvenile Trachurus japonicus in the coastal waters of Geumodo Yeosu, Korea

2015 ◽  
Vol 51 (4) ◽  
pp. 637-643 ◽  
Author(s):  
Heeyong KIM ◽  
Yu Na LIM ◽  
Jae Mook JEONG ◽  
Hyeon Ji KIM ◽  
Gun Wook BAECK
Keyword(s):  
Coastal Waters ◽  
Diet Composition ◽  
Trachurus Japonicus

Diet composition of the sandfish, Arctoscopus japonicus in the coastal waters of East Sea, Korea

2019 ◽  
Vol 55 (4) ◽  
pp. 320-326
Author(s):  
Da Yeon KANG ◽  
A-Reum KO ◽  
Jae Mook JEONG ◽  
Gun Wook BAECK
Keyword(s):  
Coastal Waters ◽  
Diet Composition ◽  
East Sea

scholarly journals Diet composition and some observations on the feeding ecology of the rhizostome Rhopilema nomadica in Israeli coastal waters

2020 ◽  
Vol 100 (5) ◽  
pp. 681-689
Author(s):  
Z. Kuplik ◽  
D. L. Angel
Keyword(s):  
Ecosystem Services ◽  
Feeding Ecology ◽  
Coastal Waters ◽  
Diet Composition ◽  
Gut Contents ◽  
Bell Diameter ◽  
Marine Food Web ◽  
Marine Food ◽  
Potential Impact ◽  
Predatory Pressure

AbstractSince the mid-1980s, swarms of the rhizostome Rhopilema nomadica have been an annual phenomenon in Israeli Mediterranean coastal waters during the summer months. Despite its annual prominence and the potential impact on food webs and ecosystem services, studies concerning its feeding ecology and its interactions with other biota in the marine food web have not been conducted. During summer 2015 gut contents of 41 R. nomadica were analysed as well as ambient plankton assemblages. More than 60% of the medusae diet was found to consist of microzooplankton <150 μm. Size correlations revealed that larger R. nomadica consumed faster swimming prey while smaller medusae relied more on the slower swimming taxa. The medusan diet reflected most of the ambient plankton taxa, but no statistically significant correlations between the relative abundance in diet and ambient plankton were found. As summer progressed, there was a gradual decrease in both mean medusa bell diameter (from 42.2–16 cm) and integrity of feeding structures. These findings suggest that R. nomadica, at least at the time of its appearance in Israeli coastal waters, may exert less predatory pressure on the plankton than we might otherwise expect.

Diet Composition of Whitespotted Conger, Conger myriaster in the Coastal Waters of Geoje Island, Korea

2020 ◽  
Vol 32 (2) ◽  
pp. 103-109
Author(s):  
Kyung Ryul Kim ◽  
Ki Mun Nam ◽  
Kyeong Hyeon Park ◽  
Byong Seob Kim ◽  
Myung Il Han ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Diet Composition ◽  
Conger Myriaster ◽  
Conger Conger

Diet of longnose stingray Hypanus guttatus (Myliobatiformes: Dasyatidae) in tropical coastal waters of Brazil

2019 ◽  
Vol 99 (8) ◽  
pp. 1869-1877
Author(s):  
Michel Donato Gianeti ◽  
Leandro Yokota ◽  
Rosangela Paula Teixeira Lessa ◽  
June Ferraz Dias
Keyword(s):  
Coastal Waters ◽  
Diet Composition ◽  
Stomach Contents ◽  
Dietary Shift ◽  
Eastern Brazil ◽  
Significant Difference ◽  
North Eastern ◽  
Opportunistic Predator ◽  
Males And Females ◽  
Stomach Contents Analysis

AbstractThis study investigated the diet of longnose stingray Hypanus guttatus in the tropical waters of north-eastern Brazil. Samples were obtained from monthly sampling of artisanal fisheries from August 2007 to July 2008. A total of 258 specimens were examined, 127 females and 131 males, and stomach contents analysis suggested H. guttatus to be a generalist and opportunistic predator feeding on the most available prey in the environment. There was no significant difference in the diet composition of males and females, or between seasons. However, an ontogenetic dietary shift was observed with larger individuals having an increased proportion of molluscs in the diet, whilst smaller individuals predated primarily on small crustaceans.

scholarly journals Geographical, and seasonal variation in the diet of harbour porpoises (Phocoena phocoena) in Icelandic coastal waters

2003 ◽  
Vol 5 ◽  
pp. 243 ◽  
Author(s):  
Gísli A Víkingsson ◽  
Droplaug Ólafsdóttir ◽  
Jóhann Sigurjónsson
Keyword(s):  
Seasonal Variation ◽  
Coastal Waters ◽  
Diet Composition ◽  
Stomach Contents ◽  
Late Winter ◽  
Phocoena Phocoena ◽  
Fish Prey ◽  
Northern Areas ◽  
Capelin Mallotus Villosus ◽  
Sexually Mature

The stomach contents of 1,047 harbour porpoises (Phocoena phocoena) bycaught in gillnets off Iceland were analysed. Most of the samples were obtained southwest (SW) and southeast (SE) of Iceland and the majority were taken in March and April. The sex ratio was biased towards males (63% males), particularly in the SE area (76%). The proportion of sexually mature porpoises was 35% and was higher in the northern part of the study area. Most examined stomachs contained identifiable food remains (97%). More than 40 fish and invertebrate prey taxa were identified.Overall capelin (Mallotus villosus) comprised the predominant prey, followed by sandeel (Ammodytidae sp.), then gadids, cephalopods and redfish (Sebastes marinus), while other taxa were of less importance. Differences were detected in diet composition among 5 areas around Iceland with redfish and gadids more prominent in the northern areas. Off SW Iceland there was considerable seasonal variation in the porpoise diet, where capelin appeared to be dominant in late winter and spring and sandeel in the summer through early winter. Predominance of capelin in the diet coincided with the spawning migration of capelin from northern waters along the east, south and west coasts of Iceland. Mature females appeared to have a more diverse diet than other reproductive classes. The length distributions of fish consumed by the porpoises ranged from 1 to 51 cm although most fish prey were less than 30 cm.

scholarly journals Feeding habits of oriental sole (Brachirus orientalis) on the Bushehr coast of the Persian Gulf

2020 ◽  
Vol 28 (3) ◽  
pp. 175-185
Author(s):  
Dima Alghada ◽  
Yazdan Keivany ◽  
Fatemeh Paykan-Heyrati
Keyword(s):  
Coastal Waters ◽  
Persian Gulf ◽  
Diet Composition ◽  
Prey Species ◽  
Feeding Habits ◽  
Male And Female ◽  
Important Prey ◽  
Males And Females ◽  
The Persian Gulf ◽  
Prey Items

AbstractThe feeding habits of oriental sole, Brachirus orientalis (Bloch & Schneider) were investigated using 300 male and female specimens collected from coastal waters of Bushehr Province (Persian Gulf) between June 2015 and July 2016. The total length of females and males ranged from 16.2 to 38.5 cm and 14.1 to 29.1 cm, respectively. Of the total number of stomachs examined, 225 were empty (vacuity index = 77%). This index varied significantly over the year (P < 0.05), with maximum values in April and September and minimum in October and May. The B. orientalis diet was composed of nine prey species belonging to five classes. The most important prey items were Crustacea and Mollusca (Bivalvia and Gastropoda). Diet composition showed little seasonal variation, and Crustacea, Bivalvia, and Gastropoda were the most important prey items in all seasons. Sex did not appear to have any significant effects on dietary composition, and the main prey items were consumed by both males and females (P > 0.05).

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