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  5.     <title>UTas ePrints - The effects of turbidity and complex habitats on the feeding of a galaxiid fish are clear and simple</title>
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  25. <meta content="The effects of turbidity and complex habitats on the
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  30. <meta content="artificial macrophytes, complex habitats, G. auratus, prey switching.
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  32. <meta content="The habitat used by animals plays an important role in their interactions with predators and prey. By using
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  34. their foraging success. Because the threat of predation by introduced brown trout increases the use of complex habitats
  35. by the threatened Galaxias auratus (Johnston), we experimentally examined its foraging in different habitats to estimate
  36. indirect impacts of brown trout presence. The lakes in which G. auratus lives have recently become more turbid, so
  37. the experiment was also conducted under different turbidity levels. Laboratory feeding trials in which planktonic and
  38. epibenthic prey were simultaneously offered to G. auratus in the presence or absence of artificial macrophytes and at
  39. three turbidity levels (0, 50 and 100 NTU) revealed that its overall foraging success was unaffected by habitat complexity;
  40. however, in trials with artificial macrophytes, G. auratus consumed a greater proportion of planktonic prey than in the
  41. absence of artificial macrophytes. Neither overall foraging success nor prey selection by G. auratus was affected by high
  42. turbidity, indicating that water clarity does not appear to directly negatively impact its feeding. The switch in prey types
  43. would probably not be detrimental to G. auratus in the long term, and thus it appears that there is no substantial feeding
  44. cost associated with its increased use of complex habitats. It could, however, affect lower trophic levels in the lakes to
  45. which it is endemic." name="eprints.abstract" />
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  56. <meta content="Ali, M. A., Sakurai, S., and Collin, S. P. (1990). Adaptive radiation of the
  57. retina in Galaxiidae (Salmoniformes).Australian Journal of Zoology 38,
  58. 173-186. doi:10.1071/ZO9900173
  59. Allan, J. D. (1978). Trout predation and the size composition of stream drift.
  60. Limnology and Oceanography 23, 1231-1237.
  61. Anderson, O. (1984). Optimal foraging by largemouth bass in structured
  62. environments. Ecology 65, 851-861. doi:10.2307/1938059
  63. Bajchorov, V. M., and Semenchenko, V. P. (1977). Size-weight characteristics
  64. and caloric content of Pontoporeia affinis Lindstr. (Crustacea,
  65. Amphipoda) from different habitats. Gidrobiologicheskii Zhurnal (Kiev)
  66. 13, 70-73.
  67. Barrett, J. C. (1992). Turbidity-induced changes in reactive distance of rainbow
  68. trout.Transactions of the American Fisheries Society 121, 437-443.
  69. doi:10.1577/1548-8659(1992)121<0437:TICIRD>2.3.CO;2
  70. Bean, C. W., and Winfield, I. J. (1995). Habitat use and activity patterns
  71. of roach (Rutilus rutilus (L.)), rudd (Scardinius erythrophthalmus (L.)),
  72. perch (Perca fluviatilis L.) and pike (Esox lucius L.) in the laboratory: the
  73. role of predation threat and structural complexity. Ecology Freshwater
  74. Fish 4, 37-46. doi:10.1111/J.1600-0633.1995.TB00025.X
  75. Bertolo, A., Lacroix, G., Lescher-Moutoue, F., and Sala, S. (1999). Effects of
  76. physical refuges on fish-zooplankton interactions. Freshwater Biology
  77. 41, 795-808. doi:10.1046/J.1365-2427.1999.00424.X
  78. Bonnett, M. L., Sagar, P. M., and Docherty, C. R. (1989). Diets of alpine
  79. galaxias (Galaxias paucispondylus Stokell) and longjawed galaxias
  80. (G. prognathus Stokell) in a South Island, New Zealand, high-country
  81. stream. New Zealand Journal of Marine and Freshwater Research 23,
  82. 453-458.
  83. Bortkevitch, L.V., Khmeleva, N. N., and Sadovskaya, N. I. (1984). Ecological
  84. characteristics, caloric value and production of Corophium robustum
  85. (Amphipoda, Corophiidae) from the lower Dnieper. Hydrobiological
  86. Journal 2, 93-99.
  87. Chesson, J. (1983).The estimation and analysis of preference and its relationship
  88. to foraging models. Ecology 64, 1297-1304. doi:10.2307/1937838
  89. Coull, B. C., andWells, J. B. J. (1983). Refuges from fish predation: experiments
  90. with phytal meiofauna from the New Zealand rocky intertidal.
  91. Ecology 64, 1599-1609. doi:10.2307/1937513
  92. Crowder, L. B., and Cooper,W. E. (1982). Habitat structural complexity and
  93. the interaction between bluegills and their prey. Ecology 63, 1802-1813.
  94. doi:10.2307/1940122
  95. David, B. O., and Closs, G. P. (2003). Seasonal variation in diel activity
  96. and microhabitat use of an endemic New Zealand stream-dwelling
  97. galaxiid fish. Freshwater Biology 48, 1765-1781. doi:10.1046/J.1365-
  98. 2427.2003.01127.X
  99. De Robertis, A., Ryer, C. H., Veloza, A., and Brodeur, R. D. (2003). Differential
  100. effects of turbidity on prey consumption of piscivorous and
  101. planktivorous fish. Canadian Journal of Fisheries and Aquatic Sciences
  102. 60, 1517-1526. doi:10.1139/F03-123
  103. Diehl, S. (1988). Foraging efficiency of three freshwater fishes: effects
  104. of structural complexity and light. Oikos 53, 207-214. doi:10.2307/
  105. 3566064
  106. Driver, E. A. (1981). Calorific values of pond invertebrates eaten
  107. by ducks. Freshwater Biology 11, 579-581. doi:10.1111/J.1365-
  108. 2427.1981.TB01288.X
  109. Gardner,M. B. (1981). Effects of turbidity on feeding rates and selectivity of
  110. Bluegills. Transactions of the American Fisheries Society 110, 446-450.
  111. doi:10.1577/1548-8659(1981)110<446:EOTOFR>2.0.CO;2
  112. Gilinsky, E. (1984). The role of fish predation and spatial heterogeneity
  113. in determining benthic community structure. Ecology 65, 455-468.
  114. doi:10.2307/1941408
  115. Glova, G. J., and Sagar, P. M. (1989a). Feeding in a nocturnally active fish,
  116. Galaxias brevipinnis, in a New Zealand stream. Australian Journal of
  117. Marine andFreshwater Research 40, 231-240. doi:10.1071/MF9890231
  118. Glova, G. J., and Sagar, P.M. (1989b). Prey selection by Galaxias vulgaris in
  119. the Hawkins River, New Zealand. New Zealand Journal of Marine and
  120. Freshwater Research 23, 153-161.
  121. Glova, G. J., Sagar, P. M., and Naslund, I. (1992). Interaction for food and
  122. space between populations of Galaxias vulgaris Stokell and juvenile
  123. Salmo trutta L. in a New Zealand stream. Journal of Fish Biology 41,
  124. 909-925. doi:10.1111/J.1095-8649.1992.TB02719.X
  125. Hardie, S. A. (2003). 'Current Status of the Macroinvertebrate Communities
  126. in Lakes Crescent and Sorell.' (Inland Fisheries Service: New Norfolk,
  127. Tas., Australia.)Available at www.ifs.tas.gov.au/ifs/fisherymanagement/
  128. publications [verified 26 March 2007].
  129. Hardie, S. A., Barmuta, L. A., and White, R. W. G. (2006). Comparison of
  130. day and night fyke netting, electrofishing and snorkelling for monitoring
  131. a population of the threatened golden galaxias (Galaxias auratus).
  132. Hydrobiologia 560, 145-158. doi:10.1007/S10750-005-9509-9
  133. Heffer, D. K. (2003). 'Wetlands of Lakes Sorell and Crescent: Conservation
  134. and Management.' (Inland Fisheries Service: New Norfolk, Tas., Australia.)Available at www.ifs.tas.gov.au/ifs/fisherymanagement/
  135. publications [verified 26 March 2007].
  136. Heggenes, J., Krog, O. M. W., Lindas, O. R., Dokk, J. G., and Bremnes, T.
  137. (1993). Homeostatic behavioural responses in a changing environment:
  138. brown trout (Salmo trutta) become nocturnal during winter. Journal of
  139. Animal Ecology 62, 295-308. doi:10.2307/5361
  140. Holker, F., Haertel, S. S., Steiner, S., and Mehner, T. (2002). Effects of
  141. piscivore-mediated habitat use on growth, diet and zooplankton consumption
  142. of roach: an individual-based modeling approach. Freshwater
  143. Biology 47, 2345-2358. doi:10.1046/J.1365-2427.2002.01002.X
  144. Kornijow, R.,Vakkilainen, K., Horppila, J., Luokkanen, E., and Kairesalo,T.
  145. (2005). Impacts of a submerged plant (Elodea canadensis) on interactions
  146. between roach (Rutilus rutilus) and its invertebrate prey communities
  147. in a lake littoral zone. Freshwater Biology 50, 262-276.
  148. Manatunge, J., Asaeda, T., and Priyadarshana, T. (2000). The influence of
  149. structural complexity on fish-zooplankton interactions: a study using
  150. artificial submerged macrophytes. Environmental Biology of Fishes 58,
  151. 425-438. doi:10.1023/A:1007691425268
  152. Manly, B. F. J. (1985). '˜The Statistics of Natural Selection on Animal
  153. Populations.' (Chapman and Hall: NewYork.)
  154. McDowall, R. M. (1990). '˜New Zealand Freshwater Fishes: A Natural
  155. History and Guide.' (Heinemann Reed: Auckland.)
  156. McDowall, R. M. (1997). An accessory lateral line in some New Zealand
  157. and Australian galaxiids (Teleostei: Galaxiidae). Ecology of Freshwater
  158. Fish 6, 217-224. doi:10.1111/J.1600-0633.1997.TB00164.X
  159. McIntosh, A. R., and Townsend, C. R. (1995). Contrasting predation risks
  160. presented by introduced brown trout and native common river galaxias
  161. in New Zealand streams. Canadian Journal of Fisheries and Aquatic
  162. Sciences 52, 1821-1833.
  163. Murdoch,W.W., and Bence, J. (1987). General predators and unstable prey
  164. populations. In '˜Predation. Direct and Indirect Impacts on Aquatic Communities'.
  165. (EdsW. C. Kerfoot and A. Sih.) pp. 17-30. (University Press
  166. of New England: Hanover, NH.)
  167. Persson, L., and Eklov, P. (1995). Prey refuges affecting interactions between
  168. piscivorous perch and juvenile perch and roach. Ecology 76, 70-81.
  169. doi:10.2307/1940632
  170. Peterson, C. H., and Renaud, P. E. (1989). Analysis of feeding preference
  171. experiments. Oecologia 80, 82-86. doi:10.1007/BF00789935
  172. Quinn, G. P., and Keough, M. J. (2002). 'Experimental Design and Data
  173. Analysis for Biologists.' (Cambridge University Press: Cambridge, UK.)
  174. Reebs, S. G. (2002). Plasticity of diel and circadian activity rhythms in
  175. fishes. Reviews in Fish Biology and Fisheries 12, 349-371. doi:10.1023/
  176. A:1025371804611
  177. Ringler, N. H. (1979). Selective predation by drift-feeding brown trout
  178. (Salmo trutta). Journal of the Fisheries Research Board of Canada 36,
  179. 392-403.
  180. Rowe, D. K., and Dean, T. L. (1998). Effects of turbidity on the feeding
  181. ability of the juvenile migrant stage of six New Zealand freshwater fish
  182. species. New Zealand Journal of Marine and Freshwater Research 32,
  183. 21-29.
  184. Rowe, D. K., Smith, J., and Williams, E. (2002). Effects of turbidity on
  185. the feeding ability of adult, riverine smelt (Retropinna retropinna) and
  186. inanga (Galaxias maculatus). New Zealand Journal of Marine and
  187. Freshwater Research 36, 143-150.
  188. Rowe, D., Graynoth, E., James, G., Taylor, M., and Hawke, L. (2003).
  189. Influence of turbidity and fluctuating water levels on the abundance and depth distribution of small, benthic fish in New Zealand alpine
  190. lakes. Ecology of Freshwater Fish 12, 216-227. doi:10.1034/J.1600-
  191. 0633.2003.00024.X
  192. Savino, J. F., and Stein, R. A. (1989). Behavioural interactions between fish
  193. predators and their prey: effects of plant density. Animal Behaviour 37,
  194. 311-321. doi:10.1016/0003-3472(89)90120-6
  195. Starry, O., Wanzenbock, J., and Danielopol, D. L. (1998). Tendency of the
  196. amphipod Gammarus roeseli Gervais to colonise coarse sediment habitats
  197. under fish predation pressure. International Review of Hydrobiology
  198. 83, 371-380. doi:10.1002/IROH.19980830505
  199. Stuart-Smith, R. D., Richardson, A. M. M., and White, R. W. G. (2004).
  200. Increasing turbidity significantly alters the diet of brown trout: a
  201. multi-year longitudinal study. Journal of Fish Biology 65, 376-388.
  202. doi:10.1111/J.0022-1112.2004.00456.X
  203. Stuart-Smith, R. D., Barmuta, L. A., and White, R.W. G. (2006). Nocturnal
  204. and diurnal feeding by Galaxias auratus, a lentic galaxiid fish. Ecology
  205. Freshwater Fish 15, 521-531. doi:10.1111/J.1600-0633.2006.00192.X
  206. Stuart-Smith, R. D.,White, R.W. G., and Barmuta, L. A. (in press). A shift
  207. in the habitat use pattern of a lentic galaxiid fish: an acute behavioural
  208. response to an introduced predator. Environmental Biology of Fishes.
  209. Sweka, J. A., and Hartman, K. J. (2001). Influence of turbidity on
  210. brook trout reactive distance and foraging success. Transactions of
  211. the American Fisheries Society 130, 138-146. doi:10.1577/1548-
  212. 8659(2001)130<0138:IOTOBT>2.0.CO;2
  213. Swisher, B. J., Soluk, D. A., and Wahl, D. H. (1998). Non-additive predation
  214. in littoral habitats: influences of habitat complexity. Oikos 81, 30-37.
  215. doi:10.2307/3546464
  216. Turnbull, D. K. R., and Barmuta, L. A. (2002). Substrate complexity influences
  217. the preference of a predatory stonefly, Eusthenia costalis Banks
  218. (Plecoptera: Eustheniidae), for its prey. Archiv fuer Hydrobiologie 155,
  219. 481-492.
  220. Uytendaal, A. (2003). 'Water Quality in Lakes Sorell and Crescent:
  221. Underlying Processes and Management Options.' (Inland Fisheries Service:
  222. New Norfolk, Tas., Australia.) Available at www.ifs.tas.gov.au/ifs/
  223. fisherymanagement/publications [verified 26 March 2007].
  224. Warfe, D. M., and Barmuta, L. A. (2004). Habitat structural complexity
  225. mediates the foraging success of multiple predator species. Oecologia
  226. 141, 171-178. doi:10.1007/S00442-004-1644-X
  227. Whitehead, A. L., David, B. O., and Closs, G. P. (2002). Ontogenetic shift
  228. in nocturnal microhabitat selection by giant kokopu in a New Zealand
  229. stream. Journal of Fish Biology 61, 1373-1385. doi:10.1111/J.1095-
  230. 8649.2002.TB02483.X
  231. Wilhelm, F. M., Hamann, J., and Burns, C. W. (2002). Mysid predation
  232. on amphipods and Daphnia in a shallow coastal lake: prey selection
  233. and effects of macrophytes. Canadian Journal of Fisheries and Aquatic
  234. Sciences 59, 1901-1907. doi:10.1139/F02-161
  235. Winfield, I. J. (1986). The influence of simulated aquatic macrophytes on the
  236. zooplankton consumption rate of juvenile roach, Rutilus rutilus, rudd,
  237. Scardinius erythrophthalmus, and perch, Perca fluviatilis. Journal of
  238. Fish Biology 29, 37-48. doi:10.1111/J.1095-8649.1986.TB04997.X
  239. Wissing, T. E., and Hasler, A. D. (1971). Intraseasonal change in caloric
  240. content of some freshwater invertebrates. Ecology 52, 371-373.
  241. doi:10.2307/1934600" name="eprints.referencetext" />
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  252. <meta content="The habitat used by animals plays an important role in their interactions with predators and prey. By using
  253. complex habitats such as areas of dense macrophyte cover in response to elevated predation risk, small fishes may reduce
  254. their foraging success. Because the threat of predation by introduced brown trout increases the use of complex habitats
  255. by the threatened Galaxias auratus (Johnston), we experimentally examined its foraging in different habitats to estimate
  256. indirect impacts of brown trout presence. The lakes in which G. auratus lives have recently become more turbid, so
  257. the experiment was also conducted under different turbidity levels. Laboratory feeding trials in which planktonic and
  258. epibenthic prey were simultaneously offered to G. auratus in the presence or absence of artificial macrophytes and at
  259. three turbidity levels (0, 50 and 100 NTU) revealed that its overall foraging success was unaffected by habitat complexity;
  260. however, in trials with artificial macrophytes, G. auratus consumed a greater proportion of planktonic prey than in the
  261. absence of artificial macrophytes. Neither overall foraging success nor prey selection by G. auratus was affected by high
  262. turbidity, indicating that water clarity does not appear to directly negatively impact its feeding. The switch in prey types
  263. would probably not be detrimental to G. auratus in the long term, and thus it appears that there is no substantial feeding
  264. cost associated with its increased use of complex habitats. It could, however, affect lower trophic levels in the lakes to
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  379.     <h1 class="ep_tm_pagetitle">The effects of turbidity and complex habitats on the feeding of a galaxiid fish are clear and simple</h1>
  380.     <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Stuart-Smith, Rick D.</span> and <span class="person_name">Stuart-Smith, Jemina F.</span> and <span class="person_name">White, R.W.G.</span> and <span class="person_name">Barmuta, Leon A.</span> (2007) <xhtml:em>The effects of turbidity and complex habitats on the feeding of a galaxiid fish are clear and simple.</xhtml:em> Marine and Freshwater Research, 58 . pp. 429-435. ISSN 1323-1650</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 href="http://eprints.utas.edu.au/1293/1/MFRpaper.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/1293/1/MFRpaper.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />219Kb</td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1071/MF06240">http://dx.doi.org/10.1071/MF06240</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The habitat used by animals plays an important role in their interactions with predators and prey. By using
  381. complex habitats such as areas of dense macrophyte cover in response to elevated predation risk, small fishes may reduce
  382. their foraging success. Because the threat of predation by introduced brown trout increases the use of complex habitats
  383. by the threatened Galaxias auratus (Johnston), we experimentally examined its foraging in different habitats to estimate
  384. indirect impacts of brown trout presence. The lakes in which G. auratus lives have recently become more turbid, so
  385. the experiment was also conducted under different turbidity levels. Laboratory feeding trials in which planktonic and
  386. epibenthic prey were simultaneously offered to G. auratus in the presence or absence of artificial macrophytes and at
  387. three turbidity levels (0, 50 and 100 NTU) revealed that its overall foraging success was unaffected by habitat complexity;
  388. however, in trials with artificial macrophytes, G. auratus consumed a greater proportion of planktonic prey than in the
  389. absence of artificial macrophytes. Neither overall foraging success nor prey selection by G. auratus was affected by high
  390. turbidity, indicating that water clarity does not appear to directly negatively impact its feeding. The switch in prey types
  391. would probably not be detrimental to G. auratus in the long term, and thus it appears that there is no substantial feeding
  392. cost associated with its increased use of complex habitats. It could, however, affect lower trophic levels in the lakes to
  393. which it is endemic.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><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">artificial macrophytes, complex habitats, G. auratus, prey switching.
  394. </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/270701.html">270000 Biological Sciences &gt; 270700 Ecology and Evolution &gt; 270701 Freshwater Ecology</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">1293</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">Mr Rick D. Stuart-Smith</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">13 Aug 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</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=1293;">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&amp;eprintid=1293">item control page</a></p>
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