Lyons, John (John D.); Cochran, Philip Andrew; Fago, Don / Wisconsin fishes 2000: status and distribution
Overview of changes in the Wisconsin fish fauna, pp. 5- PDF (631.7 KB)
OVERVIEW OF CHANGES IN THE WISCONSIN FISH FAUNA B ecker (1983) provided accounts of 157 species (with separate accounts for two nominal subspecies of lake trout (Salvelinus namaycush)), of which 146 were native and 11 were established non-natives by our criteria (table 1). Nine of the native species, skipjack herring (Alosa chrysochloris), ghost shiner (Notropis buchanani), ironcolor shiner (Notropis chalybaeus), creek chubsucker (Erimyzon oblongus), black redhorse (Moxostoma duquesnei), longjaw cisco (Coregonus alpenae), deepwater cisco (Coregonus johannae), blackfin cisco (Coregonus nigripinnis), and shortnose cisco (Coregonus reighardi), were considered extir- pated. Becker (1983) excluded two species previ- ously reported from the state, pallid sturgeon (Scaphirhynchus albus) (Priegel and Wirth 1971) and blue catfish (Ictalurus furcatus) (Greene 1935), because of an absence of valid records. He also listed 10 transient non-native species that had been introduced into state waters without success. Based on our analyses, as of 1999, we recog- nize 147 native species, 14 established non- native species, and a minimum of 19 transient non-native species (table 1). Two new native species have been recognized, southern brook lamprey (Ichthyomyzon gagei) and channel shiner (Notropis wickliffi). One former native species, the extirpated longjaw cisco (Coregonus alpenae), is now considered merely a distinctive form of shortjaw cisco (Coregonus zenithicus). Hybrid northern redbelly X finescale dace (Phoxinus eos X Phoxinus neogaeus) could represent an addi- tional unisexual clonal species, but genetic analyses of Wisconsin populations are lacking for confirmation. Two species thought by Becker (1983) to be extirpated, skipjack herring (Alosa chrysochloris) and black redhorse (Moxostoma duquesnei), have been rediscovered but are rare. Six species, ghost shiner (Notropis buchanani), ironcolor shiner (Notrpois chalybaeus), creek chubsucker (Erimyzon oblongus), deepwater cisco (Coregonus johannae), blackfin cisco (Coregonus nigripinnis), and shortnose cisco (Coregonus reighardi), are still considered extirpated. Three endangered species, striped shiner (Luxilus (for- merly Notropis) chrysocephalus), pallid shiner (Notropis amnis), and slender madtom (Noturus exilis), have declined greatly in distribution and abundance since the late 1970s and are nearly extirpated from the state. Five of the 14 estab- lished non-native species are new: kokanee salmon (Oncorhynchus nerka) (the lake-dwelling form of the sockeye salmon; considered a tran- sient non-native by Becker (1983)), threespine stickleback (Gasterosteus aculeatus), white perch (Morone americana), ruffe (Gymnocephalus cernuus), and round goby (Neogobius melanosto- mus). The 20 transient non-native species listed in this publication include 9 listed by Becker (1983), 9 not listed previously from the state (including the blue catfish (Ictalurus furcatus)), and 2 tentatively considered established by Becker (1983), the red shiner (Cyprinella (for- merly Notropis) lutrensis) and pink salmon (Oncorhynchus gorbuscha). Robins et al. (1991a) and Kendall (1997) changed the scientific names of 16 native and 2 non-native Wisconsin fishes from those used in Becker (1983). Mayden et al. (1992) proposed additional name changes for five species and two families (table 2). Three of the Mayden et al. (1992) species names and both family names are likely to be accepted in the next version of the American Fisheries Society list of North American fish names.
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