Physics Maths Engineering
Profile of ectoparasites and biometric condition of snakehead collected from different habitats
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Ilfam Zulfahmi,
Ilfam Zulfahmi
Department of Fisheries Resources Utilization, Faculty of Marine and Fisheries, Universitas Syiah Kuala
Feizia Huslina,
Rizki Nanda,
Rizki Nanda
Department of Fisheries Resources Utilization, Faculty of Marine and Fisheries, Universitas Syiah Kuala
Firman Nur,
Firman Nur
Graduate School of Mathematics and Applied Science, Universitas Syiah Kuala,
Rian Djuanda,
Aldi Waliol Perdana
Aldi Waliol Perdana
Department of Aquaculture, Faculty of Marine and Fisheries, Universitas Syiah Kuala,
Abstract
Studies related to the comparison of ectoparasites that infect snakehead from different habitats and their relationship to biometric conditions have not been widely studied. Thus, present study aimed to investigate the prevalence, intensity, dominance, and predilection of ectoparasites on snakehead collected from ditches, paddy fields, and swamps and correlate them with biometric conditions. In total of 90 snakehead fish were collected from ditches, paddy fields, and swamps. The observation of ectoparasites was performed on the gills, fins, and skin. The parameters measured in this study were ectoparasite profiles and biometric condition of fish. Specifically, the parameters of the ectoparasite profile included prevalence, intensity, dominance, and predilection. Meanwhile, the parameters of the biometric conditions were the length-weight relationship, the distribution of length and weight classes, and condition factors. Five species of ectoparasites that have been identified as Tetrahymena sp., Epistylis sp., Trichodina sp., Dactylogyrus sp., and Gyrodactylus sp. Tetrahymena sp. infection in snakehead was reported for the first time. The ditch habitat had the highest prevalence and intensity, which were 76.7% and 15.4 ectoparasites/fish, respectively. Tetrahymena sp. and Epistylis sp. were detected in sneakhead from all habitats, Trichodina sp. was detected at ditch and paddy field habitats, whereas, Gyrodactylus sp. and Dactylogyrus sp. were only found in swamp habitats. The gill was the predilection organ that most vulnerable to ectoparasite infection. Infected Snakehead tend to have lower average weight and length than healthy snakehead. Snakehead with a weight range of 115.2-145.2 g and a length range of 258.5-268.5 mm tend to be more vulnerable to ectoparasite infection compared to other sizes. Keywords: Tetrahymena sp. Prevalence Intensity Predilection Length-weight relationship
Key Question
What is the focus of the study on snakehead fish?
The study investigates the prevalence of ectoparasites in snakehead fish (Channa striata) across various habitats and their relationship to the fish's biometric conditions.
Which habitats were included in the study?
The habitats studied included ditches, paddy fields, and swamps, where 90 snakehead fish were collected for observation.
What parameters were measured in the study?
The study measured parameters such as prevalence, intensity, dominance, and predilection of ectoparasites, as well as biometric conditions like length-weight relationships and condition factors.
What were the findings regarding ectoparasite infestation?
The study found that ectoparasite prevalence and intensity varied across habitats, with some environments exhibiting higher infestation rates than others.
How do habitat conditions affect snakehead fish health?
The research showed that the biometric conditions of snakehead fish were influenced by ectoparasite infestations, suggesting that habitat plays a crucial role in the health and condition of the fish.
Why is this research significant?
The study provides valuable insights into the relationship between habitat, ectoparasite infestation, and fish health, which can guide future research and conservation efforts for aquatic species.
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