A natural experiment of dietary overlap between introduced Rainbow Trout (Oncorhynchus mykiss) and native Puyen (Galaxias maculatus) in the Santa Cruz River, Patagonia

详细信息    查看全文

• 作者：Marina Tagliaferro ; Ivan Arismendi ; Julio Lancelotti…
• 关键词：Trout invasion ; Galaxiids ; n ; MDS ; Feeding tactics
• 刊名：Environmental Biology of Fishes
• 出版年：2015
• 出版时间：May 2015
• 年：2015
• 卷：98
• 期：5
• 页码：1311-1325
• 全文大小：804 KB
• 参考文献：1. Abrams, P (1980) Some comments on measuring niche overlap. Ecology 61: pp. 44-49 CrossRef
  2. Amundsen, PA, Gabler, HM, Staldvik, FJ (1996) A new approach to graphical analysis of feeding strategy from stomach contents data -modification of the Costello (1990) method. J Fish Biol 48: pp. 607-614
  3. Arismendi, I, Soto, D, Penaluna, B, Jara, C, Leal, C, León-Mu?óz, J (2009) Aquaculture, non-native salmonid invasions, and associated declines of native fishes in lakes of northern Chilean Patagonia. Freshw Biol 54: pp. 1135-1147 CrossRef
  4. Arismendi, I, González, J, Soto, D, Penaluna, B (2012) Piscivory and diet overlap between two non-native fishes in southern Chilean streams. Aust Ecol 37: pp. 346-354 CrossRef
  5. Arismendi I, Penaluna B, Dunham JB, García C, de Leaniz D, Soto IF, Gomez-Uchida D, Gajardo G, Vargas PV, León-Mu?oz J (2014) Differential invasion success of salmonids in southern Chile: patterns and hypotheses. Rev Fish Biol Fish 24:919-41. doi:10.1007/s11160-014-9351-0
  6. Basulto S (2003) El largo viaje de los salmons: una crónica olvidada, propagación y cultivo de especies acuáticas en Chile. [The long salmon trip: a forgotten chronicle, propagation, and cultivation of aquatic species in Chile]. Maval Limitada [Eds.], Santiago, Chile
  7. B?hn, T, Amundsen, PA, Sparrow, A (2008) Competitive exclusion after invasion?. Biol Invasions 10: pp. 359-368 CrossRef
  8. Brunet, F, Gaiero, D, Probst, JL, Depetris, PJ, Gauthier-Lafaye, F, Stille, P (2005) δ13C tracing of dissolved inorganic carbon sources in Patagonian rivers (Argentina). Hydrol Process 19: pp. 3321-3344 CrossRef
  9. Buria, L, Albari?o, R, Díaz-Villanueva, V, Modenutti, B, Balseiro, E (2007) Impact of exotic rainbow trout on benthic macroinvertebrate community from Andean-Patagonian headwater streams. Arch Hydrobiol 168: pp. 145-154 CrossRef
  10. Carrea, C, Cussac, VE, Ruzzante, DE (2013) Genetic and phenotypic variation among Galaxias maculatus populations reflects contrasting landscape effects between northern and southern Patagonia. Freshw Biol 58: pp. 36-49 CrossRef
  11. Chipps SR, Garvey JE (2007) Assessment of diets and feeding patterns. In C.S. Guy and M.L. Brown, [Eds.]: Analysis and interpretation of freshwater fisheries data. American Fisheries Society, Bethesda
  12. Clarke, KR (1993) Non-parametric multivariate analyses of changes in community structure. Aust J Ecol 18: pp. 117-143 CrossRef
  13. Clarke, KR, Gorley, RN (2006) PRIMERV6: User Manual/Tutorial. PRIMER-E, Plymouth
  14. Clarke, KR, Warwick, RM (2001) Change in Marine Communities: An Approach to Statistical Analysis and Interpretation. PRIMER-E, Plymouth
  15. Coghlan, SM, Cainb, GR, Ringler, N (2007) Prey selection of subyearling Atlantic salmon and rainbow trout coexisting in a natural stream. J Fresh Ecol 22: pp. 591-608 CrossRef
  16. Colwell, RK, Futuyma, DJ (1971) On the measurement of niche breadth and overlap. Ecology 52: pp. 567-576 CrossRef
  17. Correa, C, Bravo, AP, Hendry, AP (2012) Reciprocal trophic niche shifts in native and invasive fish: salmonids and galaxiids in Patagonian lakes. Freshwater Biol 57: pp. 1769-1781 CrossRef
  18. Crowl, TA, Townsend, CR, McIntosh, A (1992) The impact of exotic brown and rainbow trout on native fish: the case of Australasia. Rev Fish Biol Fish 2: pp. 217-241 CrossRef
  19. Prinzio, CY, Casaux, RJ (2012) Dietary overlap among native and non-native fish in Patagonian low order str
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment
  Environment
  Nature Conservation
  Animal Systematics/Taxonomy/ Biogeography
  Zoology
  Hydrobiology
  
• 出版者：Springer Netherlands
• ISSN：1573-5133

文摘

Diet overlap between the native Puyen (Galaxias maculatus) and juvenile exotic Rainbow Trout (Oncorhynchus mykiss) was studied in 52 sites located along 306?km of the mainstem of the Santa Cruz River, one of the largest rivers in Patagonia. The relative abundance of both species varied along the river, with three clearly defined areas including an upstream “high Rainbow Trout to Puyen ratio-area (with abundances of 75 and 25?%, respectively), a midstream “intermediate Rainbow Trout to Puyen ratio-area (relative abundances between 75 and 25?%), and a downstream “low Rainbow Trout to Puyen ratio-area. The diet of the 2 species was analyzed across these 3 areas examining stomach content. Diet similarity between species was analyzed using a non-metric multidimensional scaling ordination technique; prey electivity was evaluated with the Ivlev’s Index; feeding tactics were studied by estimating prey-specific abundance. Both species showed a generalist feeding tactic, with Puyen exhibiting a more varied diet. Prey electivity was similar in both species, with the mayfly (Meridialaris chiloeensis), stoneflies (Klapopteryx kuscheli and Antarctoperla michaelseni), and the amphipod (Hyalella sp.) being the most frequently consumed prey. A significant diet overlap was found only in the downstream areas where a higher proportion of native fish occurs. The low diet overlap in upstream locations might be because of the high density of Rainbow Trout; while mid-stream could be due to the high secondary productivity spots. Our results suggest that the diet of native Puyen changed in relation to the abundances of Rainbow Trout in the stream.