Potency of Different Seaweeds as Diets for Developing Abalone (H. squamata) Culture in Nusa Penida Island, Bali

Abstract

ABSTRACT. Nusa Penida island is one of center for seaweed culture in Bali province. Seaweed that cultured is Euchema spinosum and Euchema cottoni spread around coastal. There also found wild seaweed, such as Ulva sp and Gracillaria sp. Abalone (H. squamata) is one of kind Mollusca which high economic value, but abalone cultured is not yet develop in Nusa Penida island, although this island have high potency for developing abalone culture. Abalone culture needs seaweeds as a diet. The abundance of seaweeds as abalon diet is important for developing abalon culture in Nusa Penida Island in the future. The aim of this research was to asses the potency of seaweeds as diet for developing abalone culture in Nusa Penida island. Research was done in Batununggul village, Nusa Penida Island. Experimental design was used Completely Randomized Design (CRD) with 3 treatments and 3 replications. The treatments were used different seaweeds as diet for abalone culture: (DG=Diet Gracillaria sp, DS=Diet Spinosum sp. and DU=Diet Ulva sp.). Abalon were cultured for 4 months by feeding the diet at satiation. Data analysis was used analysis varian (Anova) with SPSS. 16. The result showed abalon fed with Gracillaria sp (DG) at 4.73 g was the highest growth by 4.73 g, followed DU by 3.93 g and DS by 3.43 g. Meanwhile the abalon shell length fed with Gracillaria sp (DG) was the highest growth by 6.55 mm, followed DU by 5.97 mm and DS by 5.60 mm. Based on variant analysis showed growth performance (length shell and weight) abalon, all treatments were not significantly different (P>0.05). The conclusion this research, the three species of seaweed can be used as diet for abalone culture. These seaweeds have same potency as diet for developing abalone culture in Nusa Penida Island 2 E3S Web of Conferences 47, 02004 (2018)

Feeding preference and growth response of early adults abalone, Haliotis squamata on some macroalgae

“…and Ulva sp. found in this study are higher than that reported by Prihadi et al (2018) i.e. Gracillaria sp.…”

“…is consistent with a previous study on H. iris (Zhanhui et al 2010) which shows high preference for Gracillaria sp. The high consumption of other macroalgae has also been reported by other studies such as E. spinosum (Prihadi et al 2018), U. lactuca (Angel et al 2012;Bansemer et al 2016) and Enteromorpha sp. (Roussel et al 2020).…”

“…Two of seven abalone species found in Indonesia waters (Setyono 2006), Haliotis squamata, and H. asinina have been progressively developed for mariculture in Indonesia. As the finding of disease on H. asinina, current most research concern is on H. squamata particularly on feeding development (Prihadi et al 2018).…”

“…and Gracillaria sp. were combined with other macroalgae species, such as Eucheuma cottonii (Susanto et al, 2010), Eucheuma spinosum (Prihadi et al 2018), and Sargassum sp. evaluated as artificial compound diet (Giri et al, 2016).…”

Exposure to moderately elevated temperatures changes food preferences in the tropical marine herbivore Haliotis squamata

“…To test whether food consumption is a function of temperature (Experiment 1), we produced agar-pellets containing Ulva lactuca powder (Xi'an XiaoCao Botanical Development Co., Ltd, China). Ulva lactuca is commonly used as food for abalone in hatcheries and is known to be consumed by H. squamata (Giri et al 2016;Heru Prihadi et al 2018;Yusup et al 2020). For the pellets, we mixed 7.2 g of agar powder with 100 mL of distilled water and boiled the mixture for 5 s in a microwave (800 watts).…”