Effect of Thiourea on Migratory Activity of Climbing Perch Anabas testudineus and Food Consumption

Pavlov, E. D.; Zvezdin, A. O.; Павлов, Д. С.

doi:10.1134/s0032945219050126

Cited by 5 publications

(4 citation statements)

References 18 publications

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“…In green sunfish ( Lepomis cyanellu s), high thyroid activity correlates with increased food intake ( 330 ), whereas in Amur sturgeon ( Acipenser schrenckii ), low serum TH levels correlate to low feeding rates ( 331 ). In climbing perch, exposure to thiourea (TPO inhibitor) decreases food consumption ( 332 ). Reduced food ration in green sunfish ( 330 ) and long-term starvation in rainbow trout ( 333 ) decreases the sensitivity of thyroid tissues to TSH, resulting in a decrease in TH levels.…”

Section: Feeding and Nutrient Homeostasismentioning

confidence: 99%

The Role of the Thyroid Axis in Fish

2020

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In all vertebrates, the thyroid axis is an endocrine feedback system that affects growth, differentiation, and reproduction, by sensing and translating central and peripheral signals to maintain homeostasis and a proper thyroidal set-point. Fish, the most diverse group of vertebrates, rely on this system for somatic growth, metamorphosis, reproductive events, and the ability to tolerate changing environments. The vast majority of the research on the thyroid axis pertains to mammals, in particular rodents, and although some progress has been made to understand the role of this endocrine axis in non-mammalian vertebrates, including amphibians and teleost fish, major gaps in our knowledge remain regarding other groups, such as elasmobranchs and cyclostomes. In this review, we discuss the roles of the thyroid axis in fish and its contributions to growth and development, metamorphosis, reproduction, osmoregulation, as well as feeding and nutrient metabolism. We also discuss how thyroid hormones have been/can be used in aquaculture, and potential threats to the thyroid system in this regard.

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Section: Feeding and Nutrient Homeostasismentioning

confidence: 99%

The Role of the Thyroid Axis in Fish

2020

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“…It indicates that this fasting period is insufficient for the climbing perch to leave the aquatic environment in search of food. Previous studies (Pavlov et al, 2019) showed that an increase in the migratory activity of climbing perch requires a longer fasting time of individuals (>2 days).…”

Section: Discussionmentioning

confidence: 99%

“…An expansion in the number of moves of climbing perch to the surface of the water for swallowing atmospheric air with a decrease in the water level has indicated an increase in respiration intensity: air exchange in the supragillary region of the labyrinth organ (Kasumyan et al, 2021). The frequency of climbing perch jumps could indicate increased migration activity (the initial type of terrestrial migration) (Pavlov et al, 2019(Pavlov et al, , 2020. With a sufficient (>2 cm) water level, jumping towards the ladder helps climb to land into the passageway of the "dry maze".…”

Section: Discussionmentioning

confidence: 99%

“…It is known that the frequency of exiting out of the water in climbing perch is significantly increased with starvation and food competition in the waterbody (Liem, 1987). Earlier in the experiment (Pavlov et al, 2019) was shown that jumping is one of the types of terrestrial migration in climbing perch, and the change in its frequency is also associated with fish starvation. Climbing perch migrate over land in the dark-at night or early morning (Das, 1928;Liem, 1987).…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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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.

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