Creel Survey on Newton Lake

Final Report issued May 1, 2001Report issued on: May 1, 2001INHS Technical Report prepared for Ameren Corporatio

Anadromous fish as marine nutrient vectors

The tidal freshwater of Virginia supports anadromous herring (Alosa spp.) spawning runs in the spring; however, their importance as nutrient delivery vectors to the freshwater fish food web remains unknown. The stable isotope signatures of fishes from 21 species and four different guilds (predators, carnivores, generalists, and planktivores) were examined in this study to test the hypothesis that marine derived nutrients (MDNs) brought by anadromous fish would be traced into the guilds that incorporated them. Spawning anadromous fish were 13C and 34S-enriched (δ13C and δ34S of approximately 18‰ and 17.7‰, respectively) relative to resident freshwater fish. Of the guilds examined, only predators showed 13C and 34S-enrichment similar to the anadromous fish; however, some generalist catfish also showed enriched signatures. Specific fatty acid δ13C signatures for gizzard shad (Dorosoma cepedianum), blue catfish (Ictalurus furcatus), and alewife (Alosa pseudoharengus), show a 10‰ range among fishes, clearly reflecting isotopically distinct dietary sources. The δ13C and δ34S distribution and range among the freshwater fishes suggest that both autochthonous and allochthonous (terrestrial C3 photosynthetic production and MDN) nutrient sources are important to the tidal freshwater fish community

Fishes of the Antoine River, Little Missouri River System, Southwestern Arkansas

The fishes of the Antoine River (Little Missouri River system) in southwestern Arkansas were surveyed from September, 1980 - June, 1982. Thirty-four field collections plus literature and museum records, revealed a total of 60 species in 29 genera representing 16 families to presently inhabit the river system. Comments are presented on life history aspects, systematics and occurrence of fishes in the study area

Fishes of the Antoine River, Little Missouri River System, Southwestern Arkansas

The fishes of the Antoine River (Little Missouri River system) in southwestern Arkansas were surveyed from September, 1980 - June, 1982. Thirty-four field collections plus literature and museum records, revealed a total of 60 species in 29 genera representing 16 families to presently inhabit the river system. Comments are presented on life history aspects, systematics and occurrence of fishes in the study area

Factors Influencing Largemouth Bass Recruitment: Implications for the Illinois Management and Stocking Program

Annual Progress Report issued August 2002; NOTE: Two different reports numbered 02/06 were issued from the CAE.Report issued on: August 2002INHS Technical Report prepared for Division of Fisheries Illinois Department of Natural Resource

The Long-term Illinois River fish population monitoring program, Annual Report

Report issued on: March 2003Annual ReportINHS Technical Report prepared for Illinois Department of Natural Resource

Zoological results of a tour in the far east : Polyzoa Entoprocta and Ctenostomata

The Polyzoa discussed or described in this paper are all from fresh or brackish water. The majority are from the Tale Sap in the north-eastern part of the Malay Peninsula} but a few come from the Tai-Hu in the Kiangsu Province of China. I have also included notes on one Indian form. The following species are to be considered: ENTOPROCTA. Chitaspis athleticus, gen. et sp. nov., from the Tale Sap. CTENOSTOMATA. Alcyonidium mytili, Dalyell, from Indian estuaries, etc. Triticella pediceltata (Alder), from the Tale Sap. Bowerbankiacaudata, Hincks, from the Tale Sap and Perak. Paludicella elongata, Leidy, from the Tai-Hu. Paludicella pentagonalis, sp. nov., from the Tale Sap. Victorelta bengalensis, Annandale, from the Tale Sap. Hislopia cambodgiensis (Jullien), from the Tai-Hu. Hislopia malayensis. sp. nov., from Jalor in the Malay Peninsula. It will be as well to defer consideration of the biology and distribution of these species until I have been able to deal systematically with the Phylactolaemata and Cheilostomata collected on my tour. All that need be said here is that while the species of Paludicella and Hislopia are from fresh water, the others. on the list are from brackish water

Evaluating How Local- and Regional-Scale Processes Interact to Regulate Growth of Age-0 Largemouth Bass

Regional- and local-scale processes may interact to influence early growth and survival, thereby governing cohort strength. During summer through fall 1994–1996, we assessed how precipitation (a regional-scale process) and prey availability (a local-scale process) influenced piscivory and growth of age-0 largemouth bass Micropterus salmoides in five Ohio reservoirs (190–1,145 ha). We expected early growth to vary with the abundance and relative sizes of age- 0 gizzard shad Dorosoma cepedianum. We collected age-0 largemouth bass and prey fishes every 3 weeks in each reservoir. In 1994, May precipitation was low (total = 4 cm), resulting in low mean daily reservoir discharge (x¯5 reservoirs = 3.6 m3/s). In four reservoirs, stable water levels may have led to successful largemouth bass reproduction and perhaps an early hatch. As such, age-0 largemouth bass in these systems were abundant, consumed gizzard shad, and reached large sizes by fall (15.3 g). In 1995 and 1996, high precipitation (total > 12 cm) and high reservoir discharge [x¯5 reservoirs = 13.8 m3/s (1995), 28.8 m3/s (1996)] in some reservoirs in May likely reduced largemouth bass abundances. Growth during these years was density dependent across reservoirs. When age-0 largemouth bass abundance was low, nonshad prey fish were consumed, and mean fall sizes were similar to those in 1994 (12.0 g). Conversely, fall weights (4.5–7.4 g) declined in reservoirs with increasing largemouth bass density. Surveying May precipitation in Ohio across 48 years revealed that conditions like those in 1994 occurred less than 15% of the time. Because gizzard shad should rarely be available and other prey fish species probably are limited, density-dependent processes should often regulate early piscivory, growth, and potentially, cohort strength in these systems.This research was funded by National Science Foundation grant DEB 9407859 to RAS and Federal Aid in Sport Fish Restoration project F-69-P, administered jointly by the U.S. Fish and Wildlife Service and the Ohio Division of Wildlife. A Postdoctoral Fellowship and Presidential Fellowship from The Ohio State University supported RAW and JEG, respectively, during part of this work

Tanaorhamphus Longirostris (Acanthocephala) in Gizzard Shad from Ceasar Creek Lake, Ohio

Author Institution: Department of Biological Studies, Wright State UniversityGizzard shad, Dorosoma cepedianum, were collected from Caesar Creek Lake, Ohio, from March through October, 1982. A short period of infection by Tanaorhamphus longirostris occurred from April through July. Both prevalence and intensity were low, with overall mean intensity of 2.25. No relationship could be detected between infection by the worm and the size of the host fish. Maturation and reproduction by the worms peaked in May. Male and female worms were found together in only 14.5% of the infections. It is proposed that the short period of infection results from failure of the late-appearing juvenile worms to develop to maturity. Distribution of worms within the intestine of the gizzard shad was as follows: segment I = 52%, segment II = 22%, segment III = 13%, segment IV = 13%. All of the worms found in the last segment occurred late in the infection period. Infection in June and July was dominated by juvenile worms. These apparently failed to develop because no worms were found in August or October