Implications of Pylodictis olivaris (Flathead Catfish) Introduction into the Delaware and Susquehanna Drainages
نویسندگان
چکیده
منابع مشابه
Diet Selectivity of Introduced Flathead Catfish in Coastal Rivers
—In two coastal North Carolina rivers (Contentnea Creek and the Northeast Cape Fear River), we found the food habits of introduced flathead catfish Pylodictis olivaris to be primarily piscivorous, which could restructure or suppress native fish communities through direct predation. Fish or crayfish contributed more than 50% of the stomach contents by percent occurrence, percent by number, and p...
متن کاملSalinity Tolerance of Flathead Catfish: Implications for Dispersal of Introduced Populations
—The flathead catfish Pylodictis olivaris is a large predatory fish that has been introduced widely beyond its indigenous range to the detriment of many native fish communities. It disperses rapidly within and among river systems, but its potential to use saltwater or brackish waters for migration and exploitation of marine prey resources is unknown. We evaluated the salinity tolerance of juven...
متن کاملThe Flathead Catfish in Unchannelized and Channelized Missouri River, Nebraska
Flathead catfish, Py10dictus olivaris (Rafinesque), were studied in approximat~ly 83.7 km of unchannelized and 67.6 km miles of channelized Missouri River. Growth rates were slower in the unchannelized section than they were in the channelized section. The oldest fish in the unchannelized section was 25 years old, while in the channelized study area the oldest was 10 years. In the pectoral spin...
متن کاملTrophic Relations of Introduced Flathead Catfish in an Atlantic River
The flathead catfish Pylodictis olivaris is a large piscivore that is native to the Mississippi and Rio Grande river drainages but that has been widely introduced across the United States. River ecologists and fisheries managers are concerned about introduced flathead catfish populations because of the negative impacts on native fish communities or imperiled species associated with direct preda...
متن کاملMercury concentrations in fish from Lake Meredith, Texas: implications for the issuance of fish consumption advisories.
We examined how length of fish is related to mercury concentrations in muscle tissue of seven species of fish from Lake Meredith, Texas and determined how sex and growth rate are related to mercury concentration in walleye (Sander vitreus). Flathead catfish (Pylodictis olivaris), walleye and white bass (Morone chrysops) had the highest concentrations of mercury and channel catfish (Ictalurus pu...
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ژورنال
عنوان ژورنال: Northeastern Naturalist
سال: 2005
ISSN: 1092-6194,1938-5307
DOI: 10.1656/1092-6194(2005)012[0473:iopofc]2.0.co;2