Open AccessPreventing extinction in <i>Rastrelliger brachysoma</i> using an impulsive mathematical model
Author(s) -
Din Prathumwan,
Kamonchat Trachoo,
Wasan Maiaugree,
Inthira Chaiya
Publication year - 2021
Publication title -
aims mathematics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 15
ISSN - 2473-6988
DOI - 10.3934/math.2022001
Subject(s) - uniqueness , extinction (optical mineralogy) , mackerel , population , fishery , mathematics , statistics , biology , demography , fish <actinopterygii> , mathematical analysis , sociology , paleontology
In this paper, we proposed a mathematical model of the population density of Indo-Pacific mackerel ( Rastrelliger brachysoma ) and the population density of small fishes based on the impulsive fishery. The model also considers the effects of the toxic environment that is the major problem in the water. The developed impulsive mathematical model was analyzed theoretically in terms of existence and uniqueness, positivity, and upper bound of the solution. The obtained solution has a periodic behavior that is suitable for the fishery. Moreover, the stability, permanence, and positive of the periodic solution are investigated. Then, we obtain the parameter conditions of the model for which Indo-Pacific mackerel conservation might be expected. Numerical results were also investigated to confirm our theoretical results. The results represent the periodic behavior of the population density of the Indo-Pacific mackerel and small fishes. The outcomes showed that the duration and quantity of fisheries were the keys to prevent the extinction of Indo-Pacific mackerel.