Food and feeding ecology of Brazilian sardine (Sardinella brasiliensis) larvae from the southeastern Brazilian Bight

Results from depth integrated and vertically stratified plankton samples collected in the southeastern Brazilian Bight were used to study the feeding behavior of Brazilian sardine (Sardinella brasiliensis) larvae. Sampling of the ichthyoplankton was carried out with 60 cm Bongo nets in the Bight during the spawning seasons of 1991/92 and 1992/93. The sampling of microzooplankton was carried out in the coastal region off Ubatuba, using the closing-type plankton net, in December 1995. The feeding study was based on a total of 901 captured larvae. Gut content analysis of the sardine larvae showed a diurnal pattern of food intake. Copepod nauplii dominated the diet of the preflexion and flexion larvae, but they were the second in abundance for the postflexion larvae which fed preferentially on copepodites and adults of Oncaea spp. Averaged feeding incidence of the 901 larvae was 37.6%, but it increased to 58.5% for day-caught larvae. Seventy percent of the food particles were found in the mid-gut and food eaten showed a natural increase in digestion from fore-gut to hind-gut. Vertical distribution of microzooplankton revealed that copepod nauplii were present in densities of 10-20 ind. L-1, mainly in the upper mixed layer (0-20 m depth), but higher densities of copepodite and adult of Oncaea, Oithona and Paracalamis were found within and beneath the thermocline. These results show that Brazilian sardine larvae can successfully adapt their diet, feeding on the most abundant food particles in the upper mixed layer of the survey area.

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Food and Feeding Habits of the Mola Carplet Amblypharyngodon mola (Hamilton, 1822) in Rice Field Ecosystem with Consideration of Water Quality Parameters

Our Nature ◽

10.3126/on.v11i1.8245 ◽

2013 ◽

Vol 11 (1) ◽

pp. 61-75 ◽

Cited By ~ 4

Author(s):

Md. Mostafizur Rahman Mondol ◽

Dil Afroz Nahar ◽

Somen Dewan ◽

Md. Mosaddequr Rahman ◽

Saleha Jasmine ◽

...

Keyword(s):

Water Quality ◽

Rice Field ◽

Feeding Habits ◽

Quality Parameters ◽

Gut Contents ◽

Gut Content Analysis ◽

Gut Content ◽

Field Ecosystem ◽

Food And Feeding ◽

Plankton Population

The present investigation was conducted in the Agronomy field laboratory of Bangladesh Agricultural University, Mymensingh, Bangladesh during May 1999 to August 1999 to reveal the food and feeding habits of Amblypharyngodon mola in the rice field ecosystem. Percentage of frequency of occurrence and percentage in number methods were used for the qualitative and quantitative estimation of plankton population. Results showed that, during the present study, the water quality parameters were within the suitable range for optimal fish growth and plankton population was abundant in the water of the rice plots. Gut content analysis of A. mola revealed a sum of 32 genera of phytoplankton belonging to Chlorophyceae (17), Euglenophyceae (2), Cyanophyceae (7) and Bacillariophyceae (6) and 8 genera of zooplankton under Rotifera (3), Cladocera (2) and Copepoda (3). In general, Navicula, Fragilaria, Chlorella, Chrysococcus, Closterium, Oscillatoria and Gomphosphaeria were found abundant both in the water of the rice plots and in the gut contents of A. mola indicating that, these genera are preferred food of this fish in the rice field ecosystem. Gut content analysis also exposed that, phytoplankton was the major food item constituting 94.38% of the gut contents’ composition of A. mola whereas zooplankton comprised only 5.62%. The results of this study conclude that, the A. mola is planktivorous in nature, feeding mostly on phytoplankton and could be a suitable species for integrated rice-fish farming.DOI: http://dx.doi.org/10.3126/on.v11i1.8245 Our Nature Vol.11(1) 2013: 61-75

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Food and feeding habits of the exotic fish Oreochromis mossambicus (Peters, 1852) from a tropical reservoir of Chalakudy River, Kerala

Indian Journal of Fisheries ◽

10.21077/ijf.2016.63.4.56096-21 ◽

2016 ◽

Vol 63 (4) ◽

Author(s):

K. Roshni ◽

C. R. Renjithkumar ◽

B. Madhusoodana Kurup

Keyword(s):

Diet Composition ◽

Feeding Habits ◽

Oreochromis Mossambicus ◽

Feeding Habit ◽

Gut Content Analysis ◽

Gut Content ◽

Tropical Reservoir ◽

Exotic Fish ◽

Plant Matter ◽

Food And Feeding

The diet composition of the exotic fish, Oreochromis mossambicus (Peters, 1852) was studied in Poringalkuthu Reservoir, Kerala from June 2011 to May 2012. O. mossambicus (2.52 t) forms a regular fishery which indicate that the fish has been established successfully in the reservoir. Gut content analysis revealed detritus to be the dominant food item followed by chlorophyceae, cyanophyceae, bacillariophyceae, zooplankton, plant matter, sand particles, fish parts, insects and miscellaneous items. The present study shows that the species is an omnivore, with a euryphagous feeding habit.

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Understanding arthropod trophic relationships in Mediterranean lettuce crops by DNA-based gut-content analysis

10.1603/ice.2016.111906 ◽

2016 ◽

Author(s):

Nuria Agusti

Keyword(s):

Content Analysis ◽

Trophic Relationships ◽

Gut Content Analysis ◽

Gut Content

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Oceanographic Measurement Surveys Using a Custom AUV: Mixing Induced in the Upper Mixed Layer on a Continental Shelf During Adverse Weather Conditions

10.21236/ada625430 ◽

2001 ◽

Author(s):

Manhar R. Dhanak ◽

Ken Holappa

Keyword(s):

Continental Shelf ◽

Mixed Layer ◽

Weather Conditions ◽

Adverse Weather Conditions ◽

Adverse Weather ◽

Upper Mixed Layer

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Oceanographic Measurement Surveys Using a Custom AUV: Mixing Induced in the Upper Mixed Layer on a Continental Shelf During Adverse Weather Conditions

10.21236/ada627028 ◽

2002 ◽

Author(s):

Manhar R. Dhanak ◽

Ken Holappa ◽

Michael Chernys ◽

D. M. Farmer ◽

S. Vagle

Keyword(s):

Continental Shelf ◽

Mixed Layer ◽

Weather Conditions ◽

Adverse Weather Conditions ◽

Adverse Weather ◽

Upper Mixed Layer

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Analisis Isi Lambung Ikan Selais Terang Bulan (Kryptopterus bicirrhis, Valenciennes 1840) Di Desa Rantau Kasih Sungai Kampar Kiri Propinsi Riau

Biospecies ◽

10.22437/biospecies.v11i1.4998 ◽

2018 ◽

pp. 57-63

Author(s):

Ermi Yeni ◽

Roza Elvyra

Keyword(s):

Content Analysis ◽

Gut Content Analysis ◽

Gut Content ◽

Additional Food ◽

Male And Female ◽

Carnivorous Fish ◽

Supplementary Food ◽

Main Food

The study on gut content of Selais Terang Bulan fish (Kryptopterus bicirrhis) in Rantau Kasih village Kampar Kiri river was conducted from Februari- April 2017. The purpose of this study was to know about gut content of Selais Terang Bulan fish which was categorized as main food, supplementary food and additional food. The analysis is done based on the instruction of Natardjan and Jhingran (1961). The gut content was analized using the Index of preponderance. The result revealed that the main food of Selais Terang Bulan fish in Rantau Kasih village is adult Arthropoda with IP value (78.85%), and supplementary food is caterpillar (25.15%). Male and female fishes at have main food of adult Arthropoda with different percentages are (82.81%) male and female (71.32%). Based on the gut content analysis of Selais Terang Bulan fish was a carnivorous fish.

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