NDLI: Discrimination between farmed and free-living invasive salmonids in Chilean Patagonia using stable isotope analysis

Content Provider	Springer Nature Link
Author	Schröder, V. Garcia de Leaniz, Carlos
Copyright Year	2010
Abstract	In Chilean Patagonia relatively pristine aquatic environments are being modified by the introduction of exotic salmonids, initially through their deliberate release for sport fishing since the early twentieth century, and more recently via the accidental escape from fish farms. There is therefore a need to reliably distinguish between naturally reproducing and fugitive salmonids associated with the Chilean salmonid farming industry, the second largest in the world. We tested the ability of stable isotope analysis (SIA) and analysis of scale growth profiles to discriminate between farmed and free-living salmonids sampled around the Island of Chiloé. Juvenile Atlantic salmon (Salmo salar) and rainbow trout (Oncorhynchus mykiss) from aquaculture facilities were significantly more enriched in δ15N and lipid-corrected δ13C than river-caught individuals. Scale growth slopes during the first year in freshwater were significantly higher in farmed than in wild-caught rainbow trout, indicating faster somatic growth under hatchery conditions. Stable isotopes analysis classified 94% of juvenile Atlantic salmon and rainbow trout to their correct farm or free-living groups. Our results, therefore, can help to elucidate the origin and spread of exotic invasive salmonids in Chile, and address one of the biggest threats to native freshwater fishes in Patagonia and other temperate zones of the Southern Hemisphere.
Starting Page	203
Ending Page	213
Page Count	11
File Format	PDF
ISSN	13873547
Journal	Biological Invasions
Volume Number	13
Issue Number	1
e-ISSN	15731464
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-06-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Stable isotope analysis Invasive species Salmonids Aquaculture Developmental Biology Ecology Plant Sciences Freshwater & Marine Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Stable isotope analysis of trophic niche in two co-occurring native and invasive terrapins, Emys orbicularis and Trachemys scripta elegans

Fire enhances the ‘competition-free’ space of an invader shrub: Rosa rubiginosa in northwestern Patagonia

The diversity of juvenile salmonids does not affect their competitive impact on a native galaxiid

Competitive interactions during basking between native and invasive freshwater turtle species

Aquaculture as a vector for marine invasions in California

Pinus contorta invasion in the Chilean Patagonia: local patterns in a global context

Competitive interactions between co-occurring invaders: identifying asymmetries between two invasive crayfish species

A literature analysis of freshwater invasive species research: are empiricists, theoreticians, and economists working together?

Aggressive interactions during feeding between native and invasive freshwater turtles

Discrimination between farmed and free-living invasive salmonids in Chilean Patagonia using stable isotope analysis

Similar Documents

Stable isotope analysis of trophic niche in two co-occurring native and invasive terrapins, Emys orbicularis and Trachemys scripta elegans

Fire enhances the ‘competition-free’ space of an invader shrub: Rosa rubiginosa in northwestern Patagonia

The diversity of juvenile salmonids does not affect their competitive impact on a native galaxiid

Competitive interactions during basking between native and invasive freshwater turtle species

Aquaculture as a vector for marine invasions in California

Pinus contorta invasion in the Chilean Patagonia: local patterns in a global context

Competitive interactions between co-occurring invaders: identifying asymmetries between two invasive crayfish species

A literature analysis of freshwater invasive species research: are empiricists, theoreticians, and economists working together?

Aggressive interactions during feeding between native and invasive freshwater turtles

Discrimination between farmed and free-living invasive salmonids in Chilean Patagonia using stable isotope analysis