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Open AccessArticle

Effects of Nonnative Fishes on Commercial Seine Fisheries: Evidence from a Long-Term Data Set

1
Center for Water Resources, Florida A&M University, Tallahassee, FL 32307, USA
2
Department of Entomology and Nematology, University of Florida, Gainesville, FL 32611, USA
3
Institute of Tropical Biology, Vietnam Academy of Science and Technology, 85 Tran Quoc Toan, District 3, Ho Chi Minh City 700000, Vietnam
4
Inwater Research Group, Jensen Beach, FL 34597, USA
*
Author to whom correspondence should be addressed.
Water 2019, 11(6), 1165; https://doi.org/10.3390/w11061165
Received: 11 May 2019 / Revised: 30 May 2019 / Accepted: 2 June 2019 / Published: 4 June 2019
(This article belongs to the Special Issue Effects of Species Introduction on Aquatic Communities)
Dozens of introduced exotic freshwater fish species inhabit the state of Florida. These nonnative fishes interact with freshwater commercial fisheries in a variety of ways, influencing catch abundance, composition, and revenue. Using a 22-year data set collected from a commercial haul seine fishery, we aimed to explore the dynamics of yield and revenue in relation to nonnative fishes, with emphasis on the suckermouth armored catfishes (Pterygoplichthys spp.). Using profit index metrics and the inverse Simpson’s diversity index, we found that non-native tilapia (Oreochromis spp.) and brown hoplo (Hoplosternum littorale) provided economic benefits while suckermouth armored catfishes seemed to disrupt catch consistency and lower profit index values. To reduce the negative impacts of the suckermouth armored catfishes and subsequently exert pressure on their population, we suggest marketing these edible fishes for human and/or animal consumption. View Full-Text
Keywords: fisheries economics; invasive species; Pterygoplichthys; suckermouth armored catfishes; tilapia; diversity; profit index; Simpson’s diversity fisheries economics; invasive species; Pterygoplichthys; suckermouth armored catfishes; tilapia; diversity; profit index; Simpson’s diversity
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MDPI and ACS Style

Orfinger, A.B.; Lai, Q.T.; Chabot, R.M. Effects of Nonnative Fishes on Commercial Seine Fisheries: Evidence from a Long-Term Data Set. Water 2019, 11, 1165.

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