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- <title>UTas ePrints - Impact of introduced seastars Asterias amurensis on survivorship of juvenile commercial bivalves Fulvia tenuicostata</title>
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- <meta content="Ross, D. Jeff" name="eprints.creators_name" />
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- <meta content="Hewitt, Chad L." name="eprints.creators_name" />
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- <meta content="Impact of introduced seastars Asterias amurensis
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- Fulvia tenuicostata" name="eprints.title" />
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- <meta content="Seastar; Introduced species; Predation; Impacts; Bivalves; Soft sediment; Asterias amurensis" name="eprints.keywords" />
- <meta content="The introduction and establishment of the predatory seastar Asterias amurensis in
- southern Australia is considered a major threat to benthic marine communities and commercial
- bivalves. The impact of A. amurensis on a soft sediment assemblage in SE Tasmania was quantified,
- with particular attention to effects of seastar predation on the survivorship of recently settled juveniles
- of the commercial bivalve Fulvia tenuicostata. In a manipulative experiment, densities of F.
- tenuicostata juveniles were reduced by ca. 15 fold (from 580 to 35 m-2) in the presence of seastars at
- background densities relative to the treatment without seastars. In a feeding survey, A. amurensis
- exhibited preference for F. tenuicostata following settlement of the bivalve over the period from
- December 1997 to January 1998, which comprised 80 and 50% of the seastar's stomach items in February
- 1998 and April 1998, respectively. However, A. amurensis preferred a variety of other prey taxa
- when the abundance of F. tenuicostata was low, particularly other bivalves, gastropods and the echinoid
- Echinocardium cordatum. This indicates that the seastar may potentially affect the abundance
- of other prey taxa. The results provide further support to the hypothesis that predation by A. amurensis
- is largely responsible for the recent decline and subsequent rarity of large bivalves in its current
- distribution in Tasmania. The potential of seastar predation to have wider ecosystem level effects
- than the short-term direct effects reported here is a major concern." name="eprints.abstract" />
- <meta content="2002-10" name="eprints.date" />
- <meta content="published" name="eprints.date_type" />
- <meta content="Marine Ecology Progress Series" name="eprints.publication" />
- <meta content="241" name="eprints.volume" />
- <meta content="99-112" name="eprints.pagerange" />
- <meta content="UNSPECIFIED" name="eprints.thesis_type" />
- <meta content="TRUE" name="eprints.refereed" />
- <meta content="0171-8630" name="eprints.issn" />
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- <meta content="Anger K, Rogal U, Schriever G, Valentine C (1977) In situ
- investigations on the echinoderm Asterias rubens as a
- predator of soft-bottom communities in the western Baltic
- Sea. Helgol Wiss Meeresunters 29:439-459
- Brenchley GA (1982) Mechanisms of spatial competition in
- marine soft-bottom communities. Biol Bull 60:17-33
- Brenchley GA, Carlton JT (1983) Competitive displacement of
- native mud snails by introduced periwinkles in the New
- England intertidal zone. Biol Bull 165:543-558
- Buchanan JB (1966) The biology of Echinocardium cordatum (Echinodermata: Spatangoidea) from different habitats.
- J Mar Biol Assoc UK 46:97-114
- Buttermore RE, Turner E, Morrice MG (1994) The introduced
- northern Pacific seastar Asterias amurensis in Tasmania.
- Mem Queensl Mus 36:21-25
- Byrne M, Morrice MG, Wolf B (1997) Introduction of the
- northern Pacific asteroid Asterias amurensis to Tasmania:
- reproduction and current distribution. Mar Biol 127:
- 673-685
- Carlton JT, Geller JB (1993) Ecological roulette: the global
- transport of nonindigenous marine organisms. Science
- 261:78-82
- Christensen AM (1970) Feeding biology of the sea star
- Astropecten Irregularis Pennant. Ophelia 8:1-134
- Cohen AN, Carlton JT (1998) Accelerating invasion rate in a
- highly invaded estuary. Science 279:555-558
- Coughanowr C (1997) State of the Derwent Estuary: a review
- of environmental quality data to 1997. Supervising Scientist
- Report 129. Supervising Scientist, Canberra
- Dame RF (1996) Ecology of marine bivalves: an ecosystem
- approach. CRC Press, New York
- Dayton PK (1971) Competition, disturbance, and community
- organization: the provision and subsequent utilization of
- space in a rocky intertidal community. Ecol Monogr 41:
- 351-387
- Dayton PK, Oliver JS (1980) An evaluation of experimental
- analysis of population and community patterns in benthic
- marine environments. In: Tenore KR, Coull BC (eds) An
- evaluation of experimental analysis of population and
- community patterns in benthic marine environments. University
- of South Carolina Press, Columbia, p 93-120
- Draper NR, Smith H (1981) Applied regression analysis.
- Wiley-Liss, New York
- Edgar G J (1997) Australian marine life: the plants and animals
- of temperate waters. Reed Books, Kew, Victoria
- Elton CS (1958) The ecology of invasions by animals and
- plants. Methuen, London
- Fernandes TF, Huxham M, Piper SR (1999) Predator caging
- experiments: a test of the importance of scale. J Exp Mar
- Biol Ecol 241:137-154
- Fukuyama AK, Oliver JS (1985) Sea star and walrus predation
- on bivalves in Morton Sound, Bering Sea, Alaska. Ophelia
- 24:17-36
- Grannum RK, Murfet NB, Ritz DA, Turner E (1996) The distribution
- and impact of the exotic seastar, Asterias amurensis
- (Lutken), in Tasmania. In: The introduced northern Pacific
- seastar, Asterias amurensis (Lutken), in Tasmania. Australian
- Nature Conservation Agency, Canberra, p 53-138
- Grosholz ED, Ruiz GM (1995) Spread and potential impact of
- the recently introduced European Green crab, Carcinus
- maenas, in central California. Mar Biol 122:239-247
- Grosholz ED, Ruiz GM, Dean CA, Shirley KA, Maron JL, Connors
- PG (2000) The impacts of a nonindigenous marine
- predator in a California Bay. Ecology 81:1206-1224
- Hall SJ, Raffaelli D, Turrell WR (1990) Predator-caging experiments
- in marine systems, a re-examination of their value.
- Am Nat 136:657-672
- Hatanaka M, Kosaka M (1959) Biological studies on the population
- of the starfish, Asterias amurensis, in Sendai Bay.
- Tohoku J Agric Res 9:159-178
- Hulberg LW, Oliver JS (1980) Caging manipulations in
- marine soft-sediment bottom communities, importance of
- animal interactions or sedimentary habitat modifications.
- Can J Fish Aquat Sci 37:1130-1139
- Kim YS (1969) Selective feeding on the several bivalve
- molluscs by starfish, Asterias amurensis. Bull Fac Fish
- Hokkaido Univ 19:244-249
- Lafferty KD, Kuris AM (1994) Potential uses for biological
- control of alien marine species. In: Cottingham D (ed)
- Nonindiginous estuarine marine organisms (NEMO). Proc
- Conf and Workshop, Seattle. NOAA, US Department of
- Commerce, p 97-102
- Lambert WJ, Levin D, Berman J (1992) Changes in the structure
- of a New England (USA) kelp bed: the effects of an
- introduced species. Mar Ecol Prog Ser 88:303-307
- Lockhart SJ (1995) Feeding biology of the introduced sea star,
- Asterias amurensis (Lutken) in Tasmania (Echinodermata
- Asteroidea). Honours Thesis, University of Tasmania, Hobart
- Lockhart SJ, Ritz DA (1998) Feeding rates of the introduced
- sea star, Asterias amurensis (Lutken), in Tasmania. In:
- Mooi R, Telford M (eds) Proc 9th Int Echinoderm Conf,
- San Francisco. Balkema, Rotterdam, p 267-272
- Lockhart SJ, Ritz DA (2001) Preliminary observations of the
- feeding periodicity and selectivity of the introduced
- seastar, Asterias amurensis (Lutken), in Tasmania, Australia.
- Pap Proc R Soc Tas 135:25-33
- Lodge DM (1993) Biological invasions: lessons for ecology.
- Trends Ecol Evol 8:133-137
- Menge BA (1972) Foraging strategy of a starfish in relation to
- actual prey availability and environmental predictability.
- Ecol Monogr 42:25-50
- Menge BA (1982) Effects of feeding on the environment:
- Asteroidea. In: Jangoux M, Lawrence JM (eds) Echinoderm
- nutrition. Balkema, Rotterdam, p 521-551
- Mills EL, Leach JH, Carlton JT (1993) Exotic species in the
- Great Lakes: a history of biotic crises and anthropogenic
- introductions. J Gt Lakes Res 19:1-54
- Morrice MG (1995) The distribution and ecology of the introduced
- northern Pacific seastar, Asterias amurensis
- (Lutken), in Tasmania. In: The introduced northern Pacific
- seastar, Asterias amurensis, in Tasmania. Australian
- Nature Conservation Agency, Canberra, p 1-50
- Newman JA, Bergelson J and Grafen AG (1997) Blocking factors
- and hypothesis tests in ecology: is your statistics text
- wrong? Ecology 78:1312-1320
- Nichols FH, Thompson JK, Schemel LE (1990) Remarkable
- invasion of San Francisco Bay (California, USA) by the
- Asian clam Potamocorbula amurensis. II. Displacement of
- a former community. Mar Ecol Prog Ser 66:95-101
- Nojima S (1989) Ecological studies on the sea star, Astropecten
- latespinosus Meissner. VI. Seasonal changes in
- stomach contents, preference of food items, size preference
- and two kinds of switching in feeding habits. Publ
- Amakusa Mar Biol Lab Kyushu Univ 10:17-40
- Nojima S, Soliman FA, Kondo Y, Kuwano Y, Nasu K, Kitajima
- C (1986) Some notes of the outbreak of the sea star Asterias
- amurensis versiclor Sladen, in the Ariake Sea, western
- Kyshu. Publ Amakusa Mar Biol Lab Kyushu Univ 8:89-112
- Olafsson EB, Peterson CH, Ambrose WG Jr (1994) Does
- recruitment limitation structure populations and communities
- of macroinvertebrates in marine soft sediments: the
- relative significance of pre and post settlement processes.
- Oceanogr Mar Biol Annu Rev 32:65-109
- Paine RT (1966) Food web complexity and species diversity.
- Am Nat 100:850-859
- Paine RT (1974) Intertidal community structure: experimental
- studies on the relationship between a dominant competitor
- and its principal predator. Oecologia 15:93-120
- Peterson CH (1980) Predation, competitive exclusion and
- diversity in the soft-sediment benthic communities of estuaries
- and lagoons. In: Livingston RJ (ed) Predation, competitive
- exclusion and diversity in the soft-sediment benthic
- communities of estuaries and lagoons. Plenum Press,
- New York, p 233-264
- Peterson CH, Black R (1993) Experimental tests of the advantages
- and disadvantages of high density for two coexisting
- cockles in a Southern Ocean lagoon. J Anim Ecol 62:
- 614-633
- Posey MH, Wigand C, Stevenson JC (1993) Effects of an introduced
- aquatic plant, Hydrilla verticillata, on benthic communities
- in the upper Chesapeake Bay. Estuar Coast Shelf
- Sci 37:539-555
- Race MS (1982) Competitive displacement and predation
- between introduced and native mud snails. Oecologia 54:
- 337-347
- Robles C, Sherwood-Stephens R, Alvarado M (1995) Responses
- of a key intertidal predator to varying recruitment
- of its prey. Ecology 76:565-579
- Ross DJ (2001) Impact of the nothern Pacific seastar Asterias
- amurensis on soft sediment assemblages, including
- commercial species, in southeast Tasmania. Department
- of Zoology, PhD dissertation, University of Tasmania,
- Hobart
- Ross DJ, Johnson CR, Hewitt CL (in press) Assessing the ecological
- impacts of an introduced seastar: the importance of
- multiple methods. Biol Inv
- Ruiz GM, Rawlings TK, Dobbs FC, Drake LA, Mullady T, Huq
- A, Colwell RR (2000) Global spread of microorganisms by
- ships. Nature 408:49-50
- Sloan NA (1980) Aspects of the feeding biology of asteroids.
- Oceanogr Mar Biol Annu Rev 18:57-124
- Thrush SF (1986) Community structure on the floor of sealough:
- are large epibenthic predators important? J Exp
- Mar Biol Ecol 104:171-183
- Thrush SF (1999) Complex role of predators in structuring
- soft-sediment macrobenthic communities: implications of
- changes in spatial scale for experimental studies. Aust
- J Ecol 24:344-354
- Thrush SF, Hewitt JE, Pridmore RD, Cummings VJ (1996)
- Adult/juvenile interactions of infaunal bivalves: contrasting
- outcomes in different habitats. Mar Ecol Prog Ser 132:
- 83-92
- Todd CD, Keough MJ (1994) Larval settlement in hard substratum
- epifaunal assemblages: a manipulative field study
- of the effects of substratum filming and the presence of
- incumbents. J Exp Mar Biol Ecol 181:159-187
- Vanderplog HA, Scavia D (1979) Two electivity indices for
- feeding with special reference to zooplankton grazing.
- J Fish Res Board Can 36:362-365
- Virnstein RW (1978) Predator caging experiments in soft sediments:
- caution advised. In: Wiley ML (ed) Estuarine interactions.
- Academic Press, New York, p 261-273
- Vitousek PM (1994) Beyond global warming-ecology and
- global change. Ecology 75:1861-1876
- Willan RC (1998) Superfamily Tellinoidea. In: Beesley PL,
- Ross GLB, Wells A (eds) Fauna of Australia, Vol 5,
- Mollusca: the Southern Synthesis. CSIRO Publishing,
- Melbourne, p 342-348" name="eprints.referencetext" />
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- <meta content="The introduction and establishment of the predatory seastar Asterias amurensis in
- southern Australia is considered a major threat to benthic marine communities and commercial
- bivalves. The impact of A. amurensis on a soft sediment assemblage in SE Tasmania was quantified,
- with particular attention to effects of seastar predation on the survivorship of recently settled juveniles
- of the commercial bivalve Fulvia tenuicostata. In a manipulative experiment, densities of F.
- tenuicostata juveniles were reduced by ca. 15 fold (from 580 to 35 m-2) in the presence of seastars at
- background densities relative to the treatment without seastars. In a feeding survey, A. amurensis
- exhibited preference for F. tenuicostata following settlement of the bivalve over the period from
- December 1997 to January 1998, which comprised 80 and 50% of the seastar's stomach items in February
- 1998 and April 1998, respectively. However, A. amurensis preferred a variety of other prey taxa
- when the abundance of F. tenuicostata was low, particularly other bivalves, gastropods and the echinoid
- Echinocardium cordatum. This indicates that the seastar may potentially affect the abundance
- of other prey taxa. The results provide further support to the hypothesis that predation by A. amurensis
- is largely responsible for the recent decline and subsequent rarity of large bivalves in its current
- distribution in Tasmania. The potential of seastar predation to have wider ecosystem level effects
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- <h1 class="ep_tm_pagetitle">Impact of introduced seastars Asterias amurensis on survivorship of juvenile commercial bivalves Fulvia tenuicostata</h1>
- <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Ross, D. Jeff</span> and <span class="person_name">Johnson, Craig R.</span> and <span class="person_name">Hewitt, Chad L.</span> (2002) <xhtml:em>Impact of introduced seastars Asterias amurensis on survivorship of juvenile commercial bivalves Fulvia tenuicostata.</xhtml:em> Marine Ecology Progress Series, 241 . pp. 99-112. ISSN 0171-8630</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a onmouseover="EPJS_ShowPreview( event, 'doc_preview_1536' );" onmouseout="EPJS_HidePreview( event, 'doc_preview_1536' );" href="http://eprints.utas.edu.au/1192/1/2002_Ross%2C_Johnson_%26_Hewitt_MEPS.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" border="0" class="ep_doc_icon" /></a><div class="ep_preview" id="doc_preview_1536"><table><tr><td><img alt="" src="http://eprints.utas.edu.au/1192/thumbnails/1/preview.png" border="0" class="ep_preview_image" /><div class="ep_preview_title">Preview</div></td></tr></table></div></td><td valign="top"><a href="http://eprints.utas.edu.au/1192/1/2002_Ross%2C_Johnson_%26_Hewitt_MEPS.pdf"><span class="ep_document_citation">PDF</span></a> - Requires a PDF viewer<br />377Kb</td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://www.int-res.com/abstracts/meps/v241/p99-112/">http://www.int-res.com/abstracts/meps/v241/p99-112/</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The introduction and establishment of the predatory seastar Asterias amurensis in
- southern Australia is considered a major threat to benthic marine communities and commercial
- bivalves. The impact of A. amurensis on a soft sediment assemblage in SE Tasmania was quantified,
- with particular attention to effects of seastar predation on the survivorship of recently settled juveniles
- of the commercial bivalve Fulvia tenuicostata. In a manipulative experiment, densities of F.
- tenuicostata juveniles were reduced by ca. 15 fold (from 580 to 35 m-2) in the presence of seastars at
- background densities relative to the treatment without seastars. In a feeding survey, A. amurensis
- exhibited preference for F. tenuicostata following settlement of the bivalve over the period from
- December 1997 to January 1998, which comprised 80 and 50% of the seastar's stomach items in February
- 1998 and April 1998, respectively. However, A. amurensis preferred a variety of other prey taxa
- when the abundance of F. tenuicostata was low, particularly other bivalves, gastropods and the echinoid
- Echinocardium cordatum. This indicates that the seastar may potentially affect the abundance
- of other prey taxa. The results provide further support to the hypothesis that predation by A. amurensis
- is largely responsible for the recent decline and subsequent rarity of large bivalves in its current
- distribution in Tasmania. The potential of seastar predation to have wider ecosystem level effects
- than the short-term direct effects reported here is a major concern.</p></div><table style="margin-bottom: 1em" border="0" cellpadding="3" class="not_ep_block"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Seastar; Introduced species; Predation; Impacts; Bivalves; Soft sediment; Asterias amurensis</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/270702.html">270000 Biological Sciences > 270700 Ecology and Evolution > 270702 Marine and Estuarine Ecology (incl. Marine Ichthyology)</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">1192</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Professor Craig R. Johnson</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">20 Jun 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">04 Feb 2008 16:53</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=1192;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=1192">item control page</a></p>
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