slugFeeding patterns, trophic structure and damming rivers effect: studies applied in freshwater environments in the Brazilian semi-arid region
Journal Title: Journal of Animal Behaviour and Biometeorology - Year 2018, Vol 6, Issue 2
Abstract
The knowledge of the fish trophic structure has been outstanding for providing relevant information on the functioning of the ecosystem in which they are inserted, mainly in dammed environments of semiarid regions that suffer constant changes in the level of water, resulting in alterations, especially in the feeding of the fish due to the variation of the food resources throughout the year, causing changes in the diet of the local ichthyofauna. Within this context, the objective was to describe the trophic categories of fish species in freshwater environments of the Rio Grande do Norte state. Seven trophic guilds were recorded: Detritivore/iliophagous, Insectivorous, Carcinophagous, Piscivorous, Herbivorous and Omnivorous. Through the results, it is observed that the fish species inserted in different environments of the state present the same food pattern, demonstrating flexibility on the diet, prevailing a generalist alimentary habit.
Authors and Affiliations
Jônnata Fernandes de Oliveira ▪ Jean Carlos Dantas de Oliveira ▪ Louize Nascimento ▪ Rogério Taygra Vasconcelos Fernandes ▪ José Luis Costa Novaes ▪ Danielle Peretti
Keywords
Related Articles
- EP ID EP17962
- DOI http://dx.doi.org/10.14269/2318-1265/jabb.v6n2p41-47
- Views 402
- Downloads 19
slugBehavioral and physiological responses of different genetic lines of free-range broiler raised on a semi-intensive system
The aim of the study was evaluate the ability of adaptation of seven different genetic lines of free-range broilers to a semi-intensive raising system. Four hundred and twenty chicks of the Pescoço Pelado (PP), Carijó...
slugThermoregulatory traits of crossbred cattle Holstein x Gir cattle in southern of Piauí state
In this work we aimed to evaluate the thermoregulatory traits of crossbred cattle Holstein x Gir under climatic influence during the morning and afternoon shifts of the raining season of the year, in southern of Piaui...
slugThermogenesis in stingless bees: an approach with emphasis on brood's thermal contribution
The animals behave as a thermodynamic system complex, which remains all the time exchanging energy with the environment. In this context, the body temperature of bees considerably accompanies variations in ambient te...
slugFuzzy modeling as a tool for the prediction of daily weight gain in broiler chickens
Many varied empiric mathematical models have already been developed to predict broiler chicken growth. However, newly developed tools, such as fuzzy modeling, may facilitate resolutions of problems. The objective of t...
slugMechanical vibration: what is the importance of this physical quantity in the poultry transport?
Mechanical vibrations are inherent to any system of transportation. In poultry production, the higher or lower intensity of this agent during the loading of eggs, chicks and chickens, can increase the production losse...