scholarly journals Inter-ecosystem variation in the food-collection behaviour in climbing perch Anabas testudineus, a freshwater fish

2019 ◽  
Author(s):  
V. V. Binoy ◽  
V. B. Rakesh ◽  
Anindya Sinha
Keyword(s):  
Freshwater Fish ◽  
Significant Variation ◽  
Single Species ◽  
Water Channels ◽  
Paddy Fields ◽  
Anabas Testudineus ◽  
Ecological Conditions ◽  
Temporary Storage ◽  
Climbing Perch

AbstractA unique piscine behaviour—collection and temporary storage of food materials inside the mouth during times of availability and particularly in response to starvation—has been reported in a single species, the climbing perch Anabas testudineus. In this study, we documented a significant variation in the amount of food collected by populations of climbing perch inhabiting different ecological regimes, kole paddy fields, canals and water channels in coconut plantations, after experiencing starvation for two different periods of 24 and 48 h. Our results revealed a significant flexibility in this unique behaviour, depending on the ecological conditions and hunger experienced by the individuals.

scholarly journals The acute toxicity of the metaldehyde on the climbing perch

2018 ◽  
Vol 34 ◽  
pp. 02031
Author(s):  
Syamimi Wahida Mohamad Ismail ◽  
Farrah Aini Dahalan ◽  
Ammar Zakaria ◽  
Ali Yeon Mad Shakaff ◽  
Siti Aqlima Ahmad ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Aquatic Organisms ◽  
Fish Population ◽  
Behavioural Response ◽  
Paddy Fields ◽  
Fish Mortality ◽  
Anabas Testudineus ◽  
Climbing Perch ◽  
Physical Changes

In Asia, Climbing perch (Anabas testudineus) is commonly found in paddy fields and irrigation systems. Due to its habitat, Climbing perch is exposed to toxic pesticides used in paddy fields such as metaldehyde which is one of the most widely used molluscicide. This study aims to determine the acute toxicity Lethal Concentration50 (LC50) of metaldehyde and its effect on the behaviour and physical changes of the Climbing perch. The fish mortality responses to six different metaldehyde concentrations ranging from 180 to 330 mg/L were investigated. The 96-h LC50 values were determined and analysed using three different analysis methods which is arithmetic, logarithmic and probit graphic. The LC50 values obtained in this study were 239, 234 and 232 mg/L, respectively. After 96-h of exposure to metaldehyde, the fish showed a series of abnormal behavioural response in all cases: imbalance position, and restlessness of movement. The LC50 values show that metaldehyde is moderately toxic to the Climbing perch indicating that metaldehyde is not destructive to Climbing perch. However, long term exposure of aquatic organisms to the metaldehyde means a continuous health risk for the fish population as they are more vulnerable and it is on high risk for human to consume this toxicated fishes.

scholarly journals Is Boldness in Climbing Perch (Anabas testudineus) Sensitive to the Apparatus Used for Measurement?

2020 ◽  
Author(s):  
Prantik Das ◽  
V V Binoy
Keyword(s):  
Freshwater Fish ◽  
Open Field ◽  
Water Surface ◽  
Repeated Exposure ◽  
Anabas Testudineus ◽  
Air Breathing ◽  
Climbing Perch ◽  
Water Plant ◽  
The Subject ◽  
The Impact

AbstractSwimway and open field are the two popular apparatus used for measuring boldness - the propensity to take risky decisions - in various piscine species. The present study compared boldness exhibited by an air breathing freshwater fish climbing perch in a swimway, rectangular open field, intermediate stages between these two apparatus and circular open field. Impact of the modification of the start chamber by providing substratum made up of cobbles and covering the water surface using water plant hydrilla, alone and in combinations on the boldness was also tested. Our results revealed that the apparatus has a significant impact on the boldness in climbing perch. The presence of a shelter in the experimental arena (swimway) and cobble substratum in the start chamber of the apparatus were found to be reducing boldness in this fish, while hydrilla cover on the water surface neutralised the impact of cobble substratum. Repeated exposure and resultant familiarity with the arena increased boldness of climbing perch but the pattern of modification of this behavioural trait exhibited during the course of experiment was divergent across the instruments. These results point towards the need for critically analyzing the influence of instruments used for measuring various behavioural traits and considering biological needs of the subject species while designing the apparatus.

scholarly journals Can Living with an Alien Invasive Fish, Tilapia, Influence the Shoaling Decision-Making and Exploratory Behaviour of an Air-Breathing Freshwater Fish, the Climbing Perch?

2019 ◽  
Author(s):  
V V Binoy ◽  
Bhagyasree J Ingle ◽  
Aniket Bhattacharya ◽  
Anindya Sinha
Keyword(s):  
Decision Making ◽  
Freshwater Fish ◽  
Freshwater Ecosystems ◽  
Exploratory Behaviour ◽  
Anabas Testudineus ◽  
Air Breathing ◽  
Climbing Perch ◽  
Or Groups ◽  
Social Decision Making ◽  
The Impact

AbstractThe biodiversity of freshwater aquatic ecosystems is threatened by invasive alien species across the world. We studied the impact of the presence of an invasive piscine species, the tilapia Oreochromis mossambicus and acquisition of familiarity with it on the social decision-making and exploratory behaviour of a native, air-breathing, freshwater fish, the climbing perch Anabas testudineus. Our results reveal that the climbing perch did not show any significant preference or aversion to any of the stimulus shoals when unfamiliar monospecific shoals of tilapia, mixed-species shoals of tilapia and climbing perch that were divergent in the composition, or groups comprising only tilapia familiar to the subject fish for a duration of 30, 60, 90 or 120 days, were presented in opposition to a shoal with an equal number of unfamiliar conspecific individuals. No preference for isolated familiar individual tilapia was also observed against its unfamiliar counterpart or a conspecific individual. It is also noteworthy that the propensity of subject climbing perch to initiate exploration of a novel area (a measure of boldness) or exploratory activity and its sociability remained unchanged under different social conditions, including presence of unfamiliar conspecific, familiar conspecific, unfamiliar heterospecific or familiar heterospecific individuals. These results are discussed in the light of ever-increasing levels of invasion by alien fish species and the struggle for survival that currently confront native piscine species in most tropical freshwater ecosystems globally.

scholarly journals Isolation and characterization of two virulent Aeromonads associated with haemorrhagic septicaemia and tail-rot disease in farmed climbing perch Anabas testudineus

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Abhishek Mazumder ◽  
Hrishikesh Choudhury ◽  
Abhinit Dey ◽  
Dandadhar Sarma
Keyword(s):  
Natural Infection ◽  
Winter Season ◽  
Pcr Amplification ◽  
Body Parts ◽  
Anabas Testudineus ◽  
Climbing Perch ◽  
Isolation And Characterization ◽  
Biochemical Characterisation ◽  
Rot Disease

AbstractDiseased Anabas testudineus exhibiting signs of tail-rot and ulcerations on body were collected from a fish farm in Assam, India during the winter season (November 2018 to January 2019). Swabs from the infected body parts were streaked on sterilized nutrient agar. Two dominant bacterial colonies were obtained, which were then isolated and labelled as AM-31 and AM-05. Standard biochemical characterisation and 16S rRNA and rpoB gene sequencing identified AM-31 isolate as Aeromonas hydrophila and AM-05 as Aeromonas jandaei. Symptoms similar to that of natural infection were observed on re-infecting both bacteria to disease-free A. testudineus, which confirmed their virulence. LC50 was determined at 1.3 × 104 (A. hydrophila) and 2.5 × 104 (A. jandaei) CFU per fish in intraperitoneal injection. Further, PCR amplification of specific genes responsible for virulence (aerolysin and enterotoxin) confirmed pathogenicity of both bacteria. Histopathology of kidney and liver in the experimentally-infected fishes revealed haemorrhage, tubular degeneration and vacuolation. Antibiotic profiles were also assessed for both bacteria. To the best of our knowledge, the present work is a first report on the mortality of farmed climbing perch naturally-infected by A. hydrophila as well as A. jandaei, with no records of pathogenicity of the latter in this fish.

scholarly journals Pengaruh C/N Rasio Berbeda untuk Pembentukan Bioflok pada Media Pemeliharaan terhadap Pertumbuhan dan Kelangsungan Hidup Benih Ikan Betok (Anabas testudineus)

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
M. Indra Wahyu Pratama ◽  
Dade Jubaedah ◽  
Mohamad Amin
Keyword(s):  
Survival Rate ◽  
Culture Media ◽  
Farming System ◽  
Anabas Testudineus ◽  
Growth And Survival ◽  
Climbing Perch ◽  
Randomized Design ◽  
Absolute Growth ◽  
Biofloc Technology ◽  
Absolute Length

Pratama et al, 2018. The Effect of Different C/N Ratio in for Biofloc of Formation Culture Media to the Growth and Survival Rate of Juvenile Climbing Perch (Anabas testudineus). JLSO 7(1): Climbing perch fish resources still have a problem due to this fish is still obtained only through capture and also the growth of climbing perch fish is slow. The solutions to increase the growth of the climbing perch fish is by applying biofloc technology for climbing perch fish culture. The purpose of this research was to know the effect of different C/N ratio on the growth of climbing perch fish (Anabas testudineus) juvenille with biofloc farming system. This research used a completely randomized design consist of four treatments and three replications. The treatments were without molase (P0), molase with C/N ratio 15 (P1), C/N 20 (P2) and C/N ratio 25 (P3). The results showed that C / N ratio 20 was the best treatment with absolute length of growth of 1.33 cm, absolute growth of weight 1.92 g, survival rate of 99.17% and feed efficiency 138.06%.

scholarly journals Type of helminth parasite in Snakehead fish (Channa striata) from Seuneubok Cina, Indra Makmur, Aceh Timur, Indonesia

2019 ◽  
Vol 1 (1) ◽  
pp. 47-55
Author(s):  
Masitta Tanjung
Keyword(s):  
Freshwater Fish ◽  
Environmental Conditions ◽  
Sampling Method ◽  
Helminth Parasite ◽  
Paddy Fields ◽  
Tropical Regions ◽  
Research Results ◽  
Purposive Sampling ◽  
Channa Striata

Snakehead fish (Channa striata) is one of the freshwater fish in tropical regions such as Asia and Africa, and has high nutrition but is difficult to cultivate. In Indonesia, Snakehead fish are found in paddy fields, swamps and ditches, making them susceptible to parasites. Constraints in Snakehead fish cultivation are caused by the nature of the fish as a predatory, lack of the availability of food and environmental conditions that can affect the growth of the fish. The former paddy fields in Seuneubok Cina of Indra Makmur, Aceh Timur, Indonesia, is found many Snakehead fish. This research aims to determine the types of parasites that infect Snakehead fish. The Snakehead fish was taken using electrofishing gear with purposive sampling method, then dissected and identified the endoparasites which contained in the fish intestines. The research results found three genus of parasites: Pallisentis, Procamallanus and Camallanus.

scholarly journals Effects of Water Salinity on the Egg Hatching, Growth, and Survival of Larvae and Fingerlings of Climbing Perch, Anabas testudineus

2019 ◽  
Vol 64 (2) ◽  
pp. 281-286
Author(s):  
Thumronk AMORNSAKUN ◽  
Sajeenuth SRITHONGTHUM ◽  
Ponpanom PROMKAEW ◽  
bin HASSAN ◽  
Hajime MATSUBARA ◽  
...  
Keyword(s):  
Water Salinity ◽  
Egg Hatching ◽  
Anabas Testudineus ◽  
Growth And Survival ◽  
Climbing Perch
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