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Publications

These publications showcase the significant science conducted in our Science Centers.

Filter Total Items: 16782

Monitoring fish and wildlife for environmental pollutants

No abstract available.
Authors
Thomas J. O'Shea, Bob Hines, J. Larry Ludke

Survival of one- and two-year-old monosex grass carp in small ponds

Limited information has become available on the survival of monosex (female) grass carp (Ctenopharyngodon idella) reared in earthen ponds. Monosex fish produced in 1975 (Stanley 1976) were reared 27 months in earthen ponds at the Fish Farming Experimental Station, Stuttgart, Arkansas. Periodic transfers of these fish to different ponds afforded the opportunity to obtain survival information. Thoma
Authors
A.E. Thomas, R.R. Carter, D.C. Greenland

Chloride inhibition of nitrite-induced methemoglobinemia in channel catfish (Ictalurus punctatus)

Exposure of channel catfish (Ictalurus punctatus) fingerlings for 24?h to 1.0, 2.5, and 5.0?mg/L nitrite (pH?=?7; hardness?=?40?mg/L; temperature?=?22–25 °C) produced methemoglobin levels of 20.7?±?1.9%, 59.8?±?1.9%, and 77.4?±?1.4% (SE), respectively. However, methemoglobin levels were not elevated when fish were simultaneously exposed to 1.0, 2.5, and 5.0?mg/L nitrite and 25, 50, and 100?mg/L so
Authors
J.R. Tomasso, B.A. Simco, K. B. Davis

Parathion causes secondary poisoning in a laughing gull breeding colony

Use of organophosphate insecticides as replacements for the more persistent organochlorine compounds has increased dramatically in recent years. Organophosphates are desirable for field application because they break down rapidly in the environment and do not persist in animal tissues (Stickel 1974). Nevertheless, certain organophosphates are extremely toxic to wildlife for short periods after app
Authors
D. H. White, K. A. King, C. A. Mitchell, E. F. Hill, T. G. Lamont

Methemoglobin formation in channel catfish intensively cultured in aerated ponds

No abstract available at this time.
Authors
N. C. Parker, K. B. Davis, J.R. Tomasso

Diet-related die-off of captive black-crowned night herons

Several species of herons, which are top-level consumers in aquatic food chains, have experienced population declines in certain areas o f their normal range (7,13) -- areas in which elevated levels of various environmental pollutants are known to occur. (6) To determine the effects of environmental contaminants on the Ardeidae, a colony of black-crowned night herons (Nycticorax nycticorax) was es
Authors
J. W. Carpenter, J. W. Spann, M.N. Novilla