Abstract
Bighead carp (Hypophthalmichthys nobilis) and silver carp (H. molitrix), collectively known as Asian carp, are planktivorous fishes that have invaded aquatic ecosystems throughout the Mississippi River Basin of North America. Consequently, Asian carp management plans (including contractual harvest) have been implemented to prevent range expansion into vulnerable systems such as the Great Lakes. Asian carp harvest also provides an opportunity to assess if control efforts can benefit native fishes. To answer this question, 26 years of standardized electrofishing data were analyzed, focusing on gizzard shad (Dorosoma cepedianum) body condition (Wr) and abundance (catch-per-unit-effort, CPUE) from the Illinois River (Illinois, USA). Gizzard shad data were categorized into pre-Asian carp establishment (1990–1999), after Asian carp establishment (2000–2009), and harvest (2010–2014) periods. Gizzard shad Wr and small gizzard shad CPUE decreased in the entire river after Asian carp invasion, and Wr and large gizzard shad CPUE rebounded where harvest occurred. Contrastingly, small gizzard CPUE has not yet exhibited a positive response to harvest. These mixed results indicate a time-lag may exist between management action and ecosystem response. Ultimately, Asian carp removal may be facilitating improvements in gizzard shad body condition (by increasing forage availability), which may portend a future gizzard shad population rebound.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 403-412 |
| Number of pages | 10 |
| Journal | Hydrobiologia |
| Volume | 817 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jul 1 2018 |
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Keywords
- Asian carp
- Bigheaded carp contractual commercial harvest
- Invasive species management
- Planktivore
ASJC Scopus subject areas
- Aquatic Science
Cite this
Does aquatic invasive species removal benefit native fish? The response of gizzard shad (Dorosoma cepedianum) to commercial harvest of bighead carp (Hypophthalmichthys nobilis) and silver carp (H. molitrix). / Love, Seth A.; Lederman, Nathan J.; Anderson, Rebekah L.; DeBoer, Jason A.; Casper, Andrew F.
In: Hydrobiologia, Vol. 817, No. 1, 01.07.2018, p. 403-412.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Does aquatic invasive species removal benefit native fish? The response of gizzard shad (Dorosoma cepedianum) to commercial harvest of bighead carp (Hypophthalmichthys nobilis) and silver carp (H. molitrix)
AU - Love, Seth A.
AU - Lederman, Nathan J.
AU - Anderson, Rebekah L.
AU - DeBoer, Jason A.
AU - Casper, Andrew F.
PY - 2018/7/1
Y1 - 2018/7/1
N2 - Bighead carp (Hypophthalmichthys nobilis) and silver carp (H. molitrix), collectively known as Asian carp, are planktivorous fishes that have invaded aquatic ecosystems throughout the Mississippi River Basin of North America. Consequently, Asian carp management plans (including contractual harvest) have been implemented to prevent range expansion into vulnerable systems such as the Great Lakes. Asian carp harvest also provides an opportunity to assess if control efforts can benefit native fishes. To answer this question, 26 years of standardized electrofishing data were analyzed, focusing on gizzard shad (Dorosoma cepedianum) body condition (Wr) and abundance (catch-per-unit-effort, CPUE) from the Illinois River (Illinois, USA). Gizzard shad data were categorized into pre-Asian carp establishment (1990–1999), after Asian carp establishment (2000–2009), and harvest (2010–2014) periods. Gizzard shad Wr and small gizzard shad CPUE decreased in the entire river after Asian carp invasion, and Wr and large gizzard shad CPUE rebounded where harvest occurred. Contrastingly, small gizzard CPUE has not yet exhibited a positive response to harvest. These mixed results indicate a time-lag may exist between management action and ecosystem response. Ultimately, Asian carp removal may be facilitating improvements in gizzard shad body condition (by increasing forage availability), which may portend a future gizzard shad population rebound.
AB - Bighead carp (Hypophthalmichthys nobilis) and silver carp (H. molitrix), collectively known as Asian carp, are planktivorous fishes that have invaded aquatic ecosystems throughout the Mississippi River Basin of North America. Consequently, Asian carp management plans (including contractual harvest) have been implemented to prevent range expansion into vulnerable systems such as the Great Lakes. Asian carp harvest also provides an opportunity to assess if control efforts can benefit native fishes. To answer this question, 26 years of standardized electrofishing data were analyzed, focusing on gizzard shad (Dorosoma cepedianum) body condition (Wr) and abundance (catch-per-unit-effort, CPUE) from the Illinois River (Illinois, USA). Gizzard shad data were categorized into pre-Asian carp establishment (1990–1999), after Asian carp establishment (2000–2009), and harvest (2010–2014) periods. Gizzard shad Wr and small gizzard shad CPUE decreased in the entire river after Asian carp invasion, and Wr and large gizzard shad CPUE rebounded where harvest occurred. Contrastingly, small gizzard CPUE has not yet exhibited a positive response to harvest. These mixed results indicate a time-lag may exist between management action and ecosystem response. Ultimately, Asian carp removal may be facilitating improvements in gizzard shad body condition (by increasing forage availability), which may portend a future gizzard shad population rebound.
KW - Asian carp
KW - Bigheaded carp contractual commercial harvest
KW - Invasive species management
KW - Planktivore
UR - http://www.scopus.com/inward/record.url?scp=85034226144&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85034226144&partnerID=8YFLogxK
U2 - 10.1007/s10750-017-3439-1
DO - 10.1007/s10750-017-3439-1
M3 - Article
AN - SCOPUS:85034226144
VL - 817
SP - 403
EP - 412
JO - Hydrobiologia
JF - Hydrobiologia
SN - 0018-8158
IS - 1
ER -