Sponges, an important part of the reef ecosystem, are of commercial value for public aquaria, pharmacology and chemistry. With the growing demand for sponges, natural resources are at risk of being overexploited. Growing of sponges in artificial or semi natural farms is an alternative. In this study different farming methods were tested on two Indo-Pacific sponge species, Neopetrosia sp. and Stylissa massa. Survival, growth and attachment ability were observed with different substrates (suspended ropes, coral boulders and artificial substrate), two types of aquaria with different water volume and two different field sites in Indonesia. The two species responded differently to their individual locations and environmental stresses. Survival, growth and attachment rates of Neopetrosia sp. at the field site are depending on the cultivation method, we found highest volume increment (27–35%) for a horizontal line in the field. Whereas the volume increase for S. massa did not show any differences for the different transplantation methods, Neopetrosia sp. generally showed higher rates than S. massa. Further aquaria experiments, for example, on nutrient supply, should be tested to receive more detailed data about sponges, particularly because almost all fragments of both species showed a decline or steady state in mean length. 1. Introduction As filtering organisms, sponges play an important role in reef ecosystems. Like other benthic suspension feeders, they are responsible for a large share of the energy flow from the pelagic to the benthic system [1, 2]. Sponges actively move water through their body, an advantage that enables sponges to inhabit different types of habitats also at different depths [1]. Sponges were used successfully for reef rehabilitation because of their ability to clean water by filtering small particles like detritus, algae, and bacteria, and they also hold rubble and corals together [3, 4]. Sponges are also commercially important for farming (bath sponge) and ornamental trade and as a new resource of chemicals for pharmacology [5–9]. Sponges are very effective active filter feeders. The volume of water passing through a sponge can be enormous; a sponge with 10？cm in length and four cm in diameter can filter 80？L water in 24？h [10]. Due to that sponge farms are tested for their potential as biofilters near fish farms or land-based sewage water [9]. Their ability to reproduce from small pieces makes sponges very attractive for commercial farming [11, 12]. Sponges with symbiotic relationships are of high interest for public aquaria because
References
[1]
J. M. Gili and R. Coma, “Benthic suspension feeders: their paramount role in littoral marine food webs,” Trends in Ecology and Evolution, vol. 13, no. 8, pp. 316–321, 1998.
[2]
C. R. Wilkinson, “Role of sponges in coral reef structural processes,” in Perspectives on Coral Reefs, D. J. Barnes, Ed., pp. 263–274, 1983.
[3]
N. A. Campbell, Biologie, Spektrum Akademischer, Heidelberg, Germany, 2nd edition, 1998.
[4]
S. A. Fossa and A. J. Nilsen, The Modern Coral Reef Aquarium, vol. 3, Birgit Schmettkamp Verlag, 1st edition, 2000.
[5]
G. Corriero, C. Longo, M. Mercurio, C. Nonnis Marzano, G. Lembo, and M. T. Spedicato, “Rearing performance of Spongia officinalis on suspended ropes off the Southern Italian Coast (Central Mediterranean Sea),” Aquaculture, vol. 238, no. 1–4, pp. 195–205, 2004.
[6]
S. De Caralt, J. Sánchez-Fontenla, M. J. Uriz, and R. H. Wijffels, “In situ aquaculture methods for Dysidea avara (demospongiae, porifera) in the Northwestern Mediterranean,” Marine Drugs, vol. 8, no. 6, pp. 1731–1742, 2010.
[7]
N. J. De Voogd, “An assessment of sponge mariculture potential in the Spermonde Archipelago, Indonesia,” Journal of the Marine Biological Association of the United Kingdom, vol. 87, no. 6, pp. 1777–1784, 2007.
[8]
N. J. de Voogd, “The mariculture potential of the Indonesian reef-dwelling sponge Callyspongia (Euplacella) biru: growth, survival and bioactive compounds,” Aquaculture, vol. 262, no. 1, pp. 54–64, 2007.
[9]
A. Duckworth, “Farming sponges to supply bioactive metabolites and bath sponges: a review,” Marine Biotechnology, vol. 11, no. 6, pp. 669–679, 2009.
[10]
R. Wehner and W. Gehring, Zoologie, Georg Thieme, Stuttgart, Germany, 23th edition, 1995.
[11]
P. L. Colin and C. Arneson, Tropical Pacific Invertebrates, Coral Reef Press, Beverly Hills, Calif, USA, 2nd edition, 1995.
[12]
S. M. MacMillan, “Starting a successful commercial sponge aquaculture farm,” University of Hawaii Sea Grant College Program Communications Office, School of Ocean and Earth Science and Technology, CTSA publication 120, 2002.
[13]
Wet Web Media, Sponges, Phylum Porifera, Part 3, 2003, http://www.wetwebmedia.com/spongesii.htm.
[14]
P. Bethge, “Füllhorn der Meere,” Der Spiegel, vol. 17, pp. 112–113, 2003.
[15]
D. Tasdemir, R. Mallon, M. Greenstein et al., “Aldisine alkaloids from the Philippine sponge Stylissa massa are potent inhibitors of mitogen-activated protein kinase kinase-1 (MEK-1),” Journal of Medicinal Chemistry, vol. 45, no. 2, pp. 529–532, 2002.
[16]
D. E. Williams, P. Austin, A. R. Diaz-Marrero et al., “Neopetrosiamides, peptides from the marine sponge Neopetrosia sp. that inhibit amoeboid invasion by human tumor cells,” Organic Letters, vol. 7, no. 19, pp. 4173–4176, 2005.
[17]
A. Duckworth and C. Battershill, “Sponge aquaculture for the production of biologically active metabolites: the influence of farming protocols and environment,” Aquaculture, vol. 221, no. 1–4, pp. 311–329, 2003.
[18]
M. J. Page, P. T. Northcote, V. L. Webb, S. Mackey, and S. J. Handley, “Aquaculture trials for the production of biologically active metabolites in the New Zealand sponge Mycale hentscheli (Demospongiae: Poecilosclerida),” Aquaculture, vol. 250, no. 1-2, pp. 256–269, 2005.
[19]
A. R. Duckworth and C. N. Battershill, “Developing farming structures for production of biologically active sponge metabolites,” Aquaculture, vol. 217, no. 1–4, pp. 139–156, 2003.
[20]
P. Van Treeck, M. Eisinger, J. Müller, M. Paster, and H. Schuhmacher, “Mariculture trials with Mediterranean sponge species: the exploitation of an old natural resource with sustainable and novel methods,” Aquaculture, vol. 218, no. 1–4, pp. 439–455, 2003.
[21]
J. N. A. Hooper and R. W. M. Van Soest, Systema Porifera. A Guide to the Classification of Sponges, Volume 1 Introductions and Demospongiae, Kluwer Academic, Plenum Publishers, New York, NY, USA, 1st edition, 2002.
[22]
I. ？elik, ？. Cirik, U. Altna？a？ et al., “Growth performance of bath sponge (Spongia officinalis Linnaeus, 1759) farmed on suspended ropes in the Dardanelles (Turkey),” Aquaculture Research, vol. 42, pp. 1807–1815, 2011.
[23]
C. R. Wilkinson and J. Vacelet, “Transplantation of marine sponges to different conditions of light and current,” Journal of Experimental Marine Biology and Ecology, vol. 37, no. 1, pp. 91–104, 1979.
[24]
A. R. Duckworth, “Effect of wound size on the growth and regeneration of two temperate subtidal sponges,” Journal of Experimental Marine Biology and Ecology, vol. 287, no. 2, pp. 139–153, 2003.
[25]
A. R. Duckworth, C. N. Battershill, and P. R. Bergquist, “Influence of explant procedures and environmental factors on culture success of three sponges,” Aquaculture, vol. 156, no. 3-4, pp. 251–267, 1997.
[26]
W. C. Jones, “Process-formation by aquarium-kept sponges and its relevance to sponge ecology and taxonomy,” in Sponges in Time and Space, R. W. M. Van Soest, T. M. G. Van Kempen, and J. C. Braekman, Eds., pp. 241–250, A.A. Balkema, Rotterdam, The Netherlands, 1994.
[27]
J. C. Delbeek and J. Sprung, The Reef Aquarium—A Comprehensive Guide to the Identification and Care of Tropical Marine Invertebrates, Ricordea Publishing, Miami, Fla, USA, 1st edition, 1994.
[28]
M. Nickel, S. Leininger, G. Proll, and F. Brümmer, “Comparative studies on two potential methods for the biotechnological production of sponge biomass,” Journal of Biotechnology, vol. 92, no. 2, pp. 169–178, 2001.
[29]
D. Sipkema, N. A. M. Yosef, M. Adamczewski et al., “Hypothesized kinetic models for describing the growth of globular and encrusting demosponges,” Marine Biotechnology, vol. 8, no. 1, pp. 40–51, 2006.
[30]
S. Juwana, “Crab culture technique at RDCO-LIPI, Jakarta, Indonesia, 2001,” in Proceedings of the Workshop on Mariculture in Indonesia, W. W. Kastoro, S. Soemodihardjo, T. Ahmad, and S. Anggoro Putro Dwiono, Eds., pp. 49–60, Lombok, Indonesia, February 2002.
L. R. Crawshay, “Studies in the market sponges: I. Growth from the planted cutting,” Journal of the Marine Biological Association of the United Kingdom, vol. 23, pp. 553–574, 1939.
[33]
H. F. Moore, “A practical method of sponge culture,” Bulletin of the Bureau of Fisheries, vol. 28, pp. 545–585, 1910.
