干旱区生态环境知识资源中心(Arid): Quantifying Consumption of Native Fishes by Nonnative Channel Catfish in a Desert River

Arid

DOI	10.1002/nafm.10514
	Quantifying Consumption of Native Fishes by Nonnative Channel Catfish in a Desert River
	Hedden, S. C.; Gido, K. B.; Hedden, C. K.; Pennock, C. A.; Duran, B. R.; Hines, B. A.; Gilbert, E. I.; McKinstry, M. C.; Durst, S. L.; Franssen, N. R.
通讯作者	Hedden, SC
来源期刊	NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
ISSN	0275-5947
EISSN	1548-8675
英文摘要	The establishment of nonnative predators can have devastating consequences for native fish communities, but predation rates are often difficult to quantify due to spatial and temporal variation in predator foraging behavior. Predation by Channel Catfish Ictalurus punctatus throughout the Colorado River basin potentially threatens the recovery of native fishes. Because Channel Catfish are highly opportunistic feeders, an understanding of how piscivory by this species impacts prey populations should help to guide management in invaded systems. We used laboratory observations to model temperature-dependent stomach evacuation rates and combined those estimates with field-collected diet data to derive annual consumption across a 152-km reach of the San Juan River (New Mexico, Colorado, and Utah). In the field, stomach fullness increased with water temperature while the probability of observing fish prey in the diet increased with TL of Channel Catfish and water turbidity. Based on estimates of daily ration, diet composition, and Channel Catfish population demographics, we estimated the San Juan River population's fish consumption to be 4.9 kg center dot ha(-1)center dot year(-1) (95% CI = 4.0-6.1 kg center dot ha(-1)center dot year(-1)) in 2018 and 2.3 kg center dot ha(-1)center dot year(-1) (95% CI = 1.8-2.8 kg center dot ha(-1)center dot year(-1)) in 2019. Native fishes accounted for 54% of the fish biomass consumed, which included two incidents of endangered Colorado Pikeminnow Ptychocheilus lucius consumption. Although these estimates should help managers to assess the predatory threat of Channel Catfish, additional information, such as the efficacy of nonnative control and prey population compensatory responses, will likely be necessary to develop robust management strategies aimed at reducing the predatory impacts of this nonnative species on native fish assemblages.
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000598354700001
WOS关键词	UPPER GILA RIVER ; ICTALURUS-PUNCTATUS ; COLORADO SQUAWFISH ; POTENTIAL IMPACTS ; RAZORBACK SUCKER ; LIFE-HISTORY ; FRESH-WATER ; NEW-MEXICO ; BODY-SIZE ; PREY
WOS类目	Fisheries
WOS研究方向	Fisheries
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328598
作者单位	[Hedden, S. C.; Gido, K. B.; Hedden, C. K.; Pennock, C. A.] Kansas State Univ, Div Biol, 116 Ackert Hall, Manhattan, KS 66506 USA; [Duran, B. R.] US Fish & Wildlife Serv, New Mexico Fish & Wildlife Conservat Off, 3800 Commons Northeast, Albuquerque, NM 87109 USA; [Hines, B. A.] Utah Div Wildlife Resources, Moab Field Stn, 1165 South Highway 191,Suite 4, Moab, UT 84523 USA; [Gilbert, E. I.; Durst, S. L.; Franssen, N. R.] US Fish & Wildlife Serv, New Mexico Ecol Serv Field Off, 2105 Osuna Northeast, Albuquerque, NM 87113 USA; [McKinstry, M. C.] US Bur Reclamat, Upper Colorado Reg Off, 125 South State St,Room 8100, Salt Lake City, UT 84138 USA
推荐引用方式 GB/T 7714	Hedden, S. C.,Gido, K. B.,Hedden, C. K.,et al. Quantifying Consumption of Native Fishes by Nonnative Channel Catfish in a Desert River[J].
APA	Hedden, S. C..,Gido, K. B..,Hedden, C. K..,Pennock, C. A..,Duran, B. R..,...&Franssen, N. R..
MLA	Hedden, S. C.,et al."Quantifying Consumption of Native Fishes by Nonnative Channel Catfish in a Desert River".NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT