scholarly journals Influence of Water Level on the Exit of Climbing Perch Anabas testudineus out of the Water and Specific Features of Its Movements

2021 ◽  
Vol 61 (5) ◽  
pp. 752-757
Author(s):  
E. D. Pavlov ◽  
D. S. Pavlov ◽  
E. V. Ganzha ◽  
V. V. Kostin ◽  
Tran Duc Dien
Keyword(s):  
Compact Group ◽  
Water Level ◽  
Critical Value ◽  
Anabas Testudineus ◽  
Climbing Perch ◽  
Movement Characteristics ◽  
Influence Of Water

Abstract— The study presents the behavior and movement characteristics of climbing perch Anabas testudineus in the “dry maze” installation. Two types of behavior were identified in climbing perch when the water level in the starting tank decreases to the critical value: waiting (often in a compact group at the bottom of the starting tank) or exit to ashore (land) and moving (migration). Movements usually take place in a group of two to four individuals. The fish chose a tank with the water randomly and remained there until the end of the experiment. If individuals become to an empty tank, they, as a rule, leave it and continue to search for water. Thus, the search for a new waterbody is determining the terrestrial migration of climbing perch.

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 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

scholarly journals SOME TRENDS IN FRESHWATER TROPICAL AQUACULTURE AND THEIR IMPACT ON STUDIES OF THE CLIMBING PERCH ANABAS TESTUDINEUS (ANABANTIDAE) REPRODUCTIVE BIOLOGY

Fisheries ◽  
2020 ◽  
Vol 2020 (4) ◽  
pp. 85-89
Author(s):  
Dmitry Zworykin
Keyword(s):  
Reproductive Biology ◽  
Fish Species ◽  
Applied Research ◽  
Tropical Fish ◽  
Native Fish ◽  
Turn Of The Millennium ◽  
Anabas Testudineus ◽  
Climbing Perch ◽  
Contemporary Science ◽  
Tropical Aquaculture

The dynamics of publication activities devoted to the climbing perch from 1969 to 2018 is analyzed. It is shown that sharp increases in the number of publications at the turn of the millennium coincide with changes in international and national strategies for tropical fish aquaculture, focusing on cultivation of fast-growing native fish species and small farms support. These programs have led to a surge in applied research and publications on the climbing perch, as one of the most promising species. Unfortunately, some of these papers have been published in journals that are unreliable according to the criteria of contemporary science and contain controversial conclusions. Certain consequences of these trends are noted and challenges outlined.

Untersuchungen zum Einfluss von Stauspiegelschwankungen auf das Verhalten einer langsamen Massenbewegung/Investigations on the influence of water level changes on the behaviour of a slow moving landslide

Bauingenieur ◽  
2017 ◽  
Vol 92 (09) ◽  
pp. 377-386 ◽  
Author(s):  
Roman Marte ◽  
Helmut F. Schweiger ◽  
Georg M. Ausweger
Keyword(s):  
Water Level ◽  
Water Level Changes ◽  
Influence Of Water ◽  
Slow Moving

Langsame Massenbewegungen stellen eine potenzielle Gefährdung für die Umgebung dar, wenn es aufgrund äußerer Einflüsse zu einem plötzlichen Versagen oder stark zunehmenden Bewegungsraten kommen kann. In diesem Beitrag wird der Einfluss von Stauspiegelschwankungen in einem Speicherbecken auf das Bewegungsverhalten einer langsamen Massenbewegung untersucht. Hierfür werden einerseits die Ergebnisse der messtechnischen Überwachung und andererseits umfangreiche numerische Untersuchungen herangezogen. Im Zuge der numerischen Untersuchungen wird anhand einer Vorstudie der Einfluss von Wasserspiegelschwankungen auf die Porenwasserdrücke im Untergrund untersucht. Dabei wird auch ein quasigesättigter Zustand des Untergrunds mitberücksichtigt. Anschließend werden die dabei gesammelten Erkenntnisse auf ein 2D-Modell angewendet. Ein Vergleich der Berechnungs- und Messergebnisse führt zu einem besseren Verständnis des Verhaltens der Massenbewegung und in weiterer Folge ermöglicht die numerische Untersuchung eine Abschätzung des Einflusses der Wasserspiegelschwankungen auf die Standsicherheit der Massenbewegung. Die durchgeführten Untersuchungen dienen als Grundlage für die Ausarbeitung von Stabilisierungsmaßnahmen.

scholarly journals Comparison between Single and Double Injection of Pituitary Gland (PG) on the Breeding Performance of Climbing Perch, Anabas Testudineus (Bloch)

1970 ◽  
Vol 14 ◽  
pp. 57-60
Author(s):  
Shahid Uddin Mahmood
Keyword(s):  
Pituitary Gland ◽  
Key Words ◽  
Single Injection ◽  
Breeding Performance ◽  
Female Fish ◽  
Anabas Testudineus ◽  
Double Injection ◽  
Climbing Perch ◽  
Randomized Design ◽  
Completely Randomized Design

An investigation was carried out to study the effects of single and double injection of given dose of pituitary gland (PG) on the breeding performance viz., ovulation response, fertilization, and hatching of climbing perch, Anabas testudineus was tested. Pituitary gland dose of 1.2 mg/100g was used in this experiment. Twenty female fish was arranged into two treatments: T1 and T2, each with 10 replications. In T1, the entire dose was administered in a single injection and in T2 the same dose was given in two equal injections three hr apart. The experiment was laid in completely randomized design (CRD). It was found that administration of PG in split doses (double injection) had no additional advantages (ovulation 100%, fertilization 81.56% and hatching 72.68%) over the single injection (ovulation 100%, fertilization 83.03% and hatching 75.48%) treatment. Similarly, the ovulation time of the fish did not vary significantly in either single or double injection of PG (single injection 7.12 hr; double injection 7.20 hr). The results demonstrated that splitting of pituitary gland dose (double injection) has no additional advantages on breeding performance of A. testudineus. Therefore, single injection may be preferred over the second injection for breeding of this fish. Key words: Breeding, pituitary gland (PG), fertilization, hatching J. bio-sci. 14: 57-60, 2006

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