Growth Characteristics Layur Fish Lepturacanthus savala in Juata Waters, Tarakan, Indonesia

Abstract

The city of Tarakan, Indonesia, benefits economically from abundant marine biological resources, one of which is the layur fish, known commercially as ribbonfish. The purpose of this study was to analyze the growth character of the layur fish (Lepturacanthus savala) obtained from the juata waters of Tarakan City. The method of this quantitative and descriptive study was to analyze the growth of layur fish Lepturacanthus savala in the Juata waters off the coast from the city of Tarakan. Body shape, length, weight, and ratio sex data were collected from sites selected by the purposive sampling method based on trawl fishing catch. Secondary data, collected from interviews of fishing personnel, included the number of catches using trawling gear and trawl fishing location. The length ranges of male from 20,4 to 54,0 cm with an average length of 37,2±16.8 cm (n = 255) and the length ranges of female from 20,5 to 68 cm with an average length of 44,25±23.75 cm (n = 275). The results showed that maximum length of male layur fish was smaller than the maximum length of female fish, which were 59.352 cm at 267 d and 72.638 cm at 315 d, respectively. The result shows a negative allometric growth pattern male and female layur fish was found to be the same and sex ratio of male to female has a ratio of 1,0: 1,8 with a percentage of males at 48.11% and females at 51.89%. The majority of male and female fish exhibited a thin body shape (51,4% of male and 52% of female).

Characteristics of Model Growth And Mortality of White Shrimp (Penaeus merguiensis de Man 1888) in The Estuaria of Bengara, Regency Bulungan

“…According to [24] explained that the conditions of the aquatic environment such as temperature, salinity, pH and geographical location can affect the growth of shrimp both negative allometry or positive allometry. According to Modification of [25] in [14] ; [15] ; [35] ; [16] ; [17] ; [20] ; [9] ; [10] ; [12] explaining the condition index criteria, there are five categories, namely very thin body shape with a range of 0.01-0.49; thin body shape with a range of 0.5-0.99 ; proportional body shape with a value of 1 ; fat body shape with a range of 1.01-1.50 and very fat body shape with a value> 1.51. Based on the condition index criteria for P.merguiensis, it can be seen in Figure 3 which explains that the male and female P.merguiensis shrimp body shape models have the same body composition, namely thin, proportional, fat and very fat body shapes.…”

“…The index condition factor according to [9] ; [10] ; [7] ; [11; [12] explains that the value is to get the body shape pattern of each individual aquatic biota species. The condition index was then compared with the index suggested by [14] ; [15] ; [16] ; [17] ; [18] ; [19] ; [20] ; [9] ; [10]; [7] ; [12].…”

Growth and mortality model of Chacunda gizzard shad Anodontostoma chacunda (Bleeker, 1852) in Tarakan waters, North Kalimantan, Indonesia

“…The growth model of A. chacunda was analyzed using the length-weight relationship (Ferdoushi et al 2022) to determine fish stock conditions (Zahid et al 2022). The condition index value is an indicator value in analyzing the physiological and nutritional status of aquatic biota (Panicker and Katchi 2021), characteristics of growth patterns and age (Salim et al 2020a;Indarjo et al 2023b) using the Von Bertalanffy model (Indarjo et al 2022), and condition index analysis (Indarjo et al 2020a) used in fish physiology (Panicker and Katchi 2021) to analyze individual fish body shape (Salim et al 2021) or relative fish health within a specific population or individual (Salim et al 2020a). A mortality analysis model (Pauly 1984) was used Beverton and Holt formula to determine total mortality (Sparre and Venema 1999), catch mortality, natural mortality, and exploitation rate (Pauly 1984), indicating whether the fish has been optimally utilized (Ray et al 2023).…”

Length-weight relationship and condition factors of Lepturacanthus savala in Lampung Bay, Indonesia

“…In some areas, trawl also catches it (Agustina et al 2015;Kharatmol et al 2020). This species, characterized as benthopelagic and amphidromous, inhabits tropical waters within the coastal regions of the Indo-West Pacific and the Indian Ocean (Nakamura and Parin 1993;Indarjo et al 2020). The reproductive system of L. savala includes a pair of ovaries, oviducts, and common ovarian ducts in females.…”