Walleye Consumption and Long-Term Population Trends Following Gizzard Shad Introduction into a Western South Dakota Reservoir
نویسندگان
چکیده
منابع مشابه
Food Consumption by Larval Gizzard Shad: Zooplankton Effects and Implications for Reservoir Communities
—Because peak abundance of larval gizzard shad Dorosoma cepedianum occurs simultaneously with the midsummer decline of macrozooplankton in Ohio reservoirs, we hypothesized that zooplanktivory by larval gizzard shad caused this decline. To test this hypothesis, we compared larval food consumption with zooplankton productivity in two reservoirs. Larval gizzard shad began to influence zooplankton ...
متن کاملNitrogen and phosphorus excretion by detritivorous gizzard shad in a reservoir ecosystem
The detritivorous fish, gizzard shad (Dorosoma cepedianum), provides nutrients to phytoplankton in reservoirs by ingesting organic detritus associated with sediments and excreting substantial quantities of nutrients such as N and P in soluble forms that are highly available to phytoplankton, We estimated nutrient excretion by gizzard shad in a eutrophic reservoir (Acton Lake, Ohio) during April...
متن کاملNutritional Quality of Foods Consumed by Gizzard Shad in Western Lake Erie
Gizzard shad (Dorosoma cepedianum) were collected from four locations in western Lake Erie during summer, 1982. The nutritional quality of foods ingested by these fish was examined. Small (<60 mm standard length), age 0 fish consumed mostly zooplankton with high organic (>80% of dry weight) and nitrogen (>6% of dry weight) contents. The phytoplankton and detritus diets of larger, age 0 and adul...
متن کاملDirect and Indirect Effects of Gizzard Shad on Bluegill Growth and Population Size Structure
—Competition with gizzard shad Dorosoma cepedianum has been shown to influence survival of larval bluegills Lepomis macrochirus as well as growth and size structure of largemouth bass Micropterus salmoides, which prey on these planktivorous species. However, little is known about how the presence of gizzard shad influences bluegills beyond the larval stage. We examined bluegill–gizzard shad int...
متن کاملEffects of gizzard shad on benthic communities in reservoirs
Effects of gizzard shad Dorosoma cepedianum on benthic communities in a large southern reservoir (Lake Texoma, U.S.A.) were examined during two field enclosure and exclosure experiments in which enclosures were stocked at high and low densities in 1998 and 1999, respectively. In both years, chironomid abundance significantly increased in treatments that excluded large fishes from foraging on se...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Freshwater Ecology
سال: 2007
ISSN: 0270-5060,2156-6941
DOI: 10.1080/02705060.2007.9665056