The correlation between temperature and intensity of Zeylanicobdella arugamensis on cantang grouper (E. fuscoguttatus × E. lanceolatus) from traditional ponds in the Kampung Kerapu Lamongan East Java Indonesia

Abstract

Grouper fish (Epinephelus sp.) is one of the superior species in the development of marine culture in Indonesia. In the cultivation process, one important factor that must be considered is good water quality. Diseases that attack fish are caused by the interaction between environment, pathogen, and host. One of the pathogenic agents is parasites, and the ectoparasite that infects cantang grouper is Zeylanicobdella arugamensis. This study aims to determine the correlation between temperature and intensity of Zeylanicobdella arugamensis in cantang grouper. The method used in this research is a survey method by measuring pond temperature and calculating the intensity of Zeylanicobdella arugamensis from 50 samples of cantang grouper in cantang grouper at 4 ponds. The results that have been obtained are, temperature: 28°C (pond 1), 29°C (pond 2), 30°C (pond 3), and 31°C (pond 4). While the intensity of Zeylanicobdella arugamensis found were: 18,66 individu / fish (pond 1), 10,7 individu / fish (pond 2), 7,1 individu / fish (pond 3), and 4,6 individu / fish (pond 4). Results of the correlation analysis showed a very close relationship between temperature and the intensity of Zeylanicobdella arugamensis in cantang grouper with negative correlation coefficient value is r = −0.964 (p <0.05).

Impact of transport conditions and underlying disease on post‐stocking survival of juvenile Lates calcarifer

“…Fish hosts with a weakened condition are more prone to ectoparasites (Poulin, 2013; Rohde et al., 1995; Shvydka et al., 2018). Zeylanicobdella arugamensis is the most commonly reported parasitic leech species affecting farmed fish in Brunei (Azmey et al., 2020), Indonesia (Afifah et al., 2021; Mahasri et al., 2020; Suyanti et al., 2021), Malaysia (Chu et al., 2013; Kua et al., 2010; Ravi & Shariman Yahaya, 2017), and Philippines (Cruz‐Lacierda et al., 2000). Similar to this study, Z. arugamensis infestations have been reported to cause secondary bacterial infections from bite wounds and elevated white blood cell counts (Kua, 2006; Kua et al., 2010; Ogawa et al., 2007; Suyanti et al., 2021).…”

The Effectiveness Of Citric Acid As An Anti-Ectoparasite Of Marine Leech (Zeylanicobdella arugamensis) Through Soaking

“…This can be seen from the percentage of cocoon hatching in these treatments, although the percentage of hatching varies (Table 2). According to [1], [10] that eggs produced by leeches take 10-11 days to hatch larvae at 27ºC. Z. arugamensis lays multiple eggs, and the number of eggs produced will be different.…”

“…Sea leech infections occur almost year-round with prevalence reaching 10-100%. The highest prevalence of sea leeches occurs in March-June [1,17,23].…”

Blood glucose level and infestation degree by Zeylanicobdella sp. in cantang grouper before and after closed wet transportation system

“…This disturbance causes fish to experience decreased immunity, and disease is easy to attack fish [8]. The disease will attack fish if there is an interaction between the host, pathogen, and the environment, especially parasite infestation [9]. The environment can significantly influence every important parasite species, especially in wild or cultured marine fish [10].…”