Dietary preference of key microhabitat Diadema setosum: a step towards holistic Banggai cardinalfish conservation

1st International Conference on Global Issue for Infrastructure, Environment & Socio-Economic Development

经济学;社会科学（总论）

Moore, A.^1^5 ; Ndobe, S.^2 ; Ambo-Rappe, R.^3 ; Jompa, J.^3^4^5 ; Yasir, I.^3^6

Doctoral Program, Faculty of Marine Science and Fisheries, Universitas Hasanuddin, Makassar, Indonesia^1

Aquaculture Study Program, Faculty of Animal Husbandry and Fisheries, Tadulako University, Palu, Indonesia^2

Marine Science Department, Faculty of Marine Science and Fisheries, Universitas Hasanuddin, Makassar, Indonesia^3

Post-Graduate School, Universitas Hasanuddin, Makassar, Indonesia^4

Marine Resilience and Sustainable Development Centre of Excellence, Faculty of Marine Science and Fisheries, Universitas Hasanuddin, Makassar, Indonesia^5

Center of Excellence for Development and Utilization of Seaweed, Universitas Hasanuddin, Makassar, Indonesia^6

关键词: Feed consumption;    Gracilaria;    Human consumption;    Macro-algae;    Microhabitats;    Sea urchin;    Seagrasses;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/235/1/012054/pdf
DOI  :  10.1088/1755-1315/235/1/012054

学科分类：社会科学、人文和艺术（综合）

来源: IOP

【 摘 要 】

The sea urchins Diadema setosum and D. savignyi are key symbionts of the Banggai cardinalfish Pterapogon kauderni, a species of global and national conservation concern. There is growing interest in Diadema propagation for conservation and human consumption; however little is known about the dietary preferences of Indo Pacific Diadema species. This study explored the feeding preference of Diadema setosum offered a choice of two macroalgae (Ulva reticulata, Gracilaria sp.) and two seagrasses (Thalassia hemprichii, Enhalus acoroides). Portions (5g) of the four feeds were attached to the corners of rectangular plastic cages and one D. setosum released in the centre of each cage. Uneaten feed was weighed after 24 hours. This procedure was repeated for 5 days with 8 replicates. Mean daily feed consumption/urchin was 4.31g,. All urchins ate a varied diet comprising all four feed types, with a significant preference (p