Sympatric coastrange sculpin, Cottus aleuticus, and prickly sculpin, C. asper, occupied distinct habitats in the mainstem Smith River, northwestern California. For example, 90% of coastrange sculpin (n = 294) used habitat with water velocity > 5 cm s, whereas 89% of prickly sculpin (n = 981) used habitat with water velocity ≤ 5 cm s. Sixty-five percent of coastrange sculpin were found at depths...

Two new species of the genus Cardiodectes Wilson, 1917 (Siphonostonatoida: Pennellidae) are described based on females from gobiid fishes (Actinopterygii: Perciformes) in coastal waters of the Pacific Ocean. Both new species belong to the 'rubosus' group sharing a trunk without an abdomen. Cardiodectes bellwoodi n. sp. parasitizes Istigobius nigroocellatus (Günther) in Australian waters and dif...

The positional and fatty acid specificities of lipases from several different microorganisms have been examined by gas-liquid chromatographic analysis of the free fatty acids following action on mixed triglycerides of known composition. Three types of lipases were found. Lipases of the first type, obtained from several microorganisms, attacked primarily the 1-position of the triglyceride in a m...

Significant inhibition of the coagulant and hemorrhagic effects of Bothrops asper venom was demonstrated by ethanolic extract prepared from the leaves of Brownea rosademonte. In vitro experiments preincubating 5.5 mg of extract kg-1 b.m. for 30 min with a minimum hemorrhagic dose of venom (273.8 ± 16.1 μg of venom kg-1 b.m.) lowered the hemorrhagic activity of the venom alone in CD-1 mice by 51...

The positional and fatty acid specificities of lipases from several different microorganisms have been examined by gas-liquid chromatographic analysis of the free fatty acids following action on mixed triglycerides of known composition. Three types of lipases were found. Lipases of the first type, obtained from several microorganisms, attacked primarily the 1-position of the triglyceride in a m...

The positional and fatty acid specificities of lipases from several different microorganisms have been examined by gas-liquid chromatographic analysis of the free fatty acids following action on mixed triglycerides of known composition. Three types of lipases were found. Lipases of the first type, obtained from several microorganisms, attacked primarily the 1-position of the triglyceride in a m...

The incidence and intensity of metazoan parasites in 3 species of Iraqi amphibians were studied. The amphibians were Rana ridibunda, Bufo viridis and Hyla arborea. Twenty-four species of helminths were encountered, including 16 trematodes, 1 cestode and 7 nematodes. Their respective names are: Polystoma integerrimum, Prosotocus confusus, P. fuelleborni, Pleurogenoides gastroporus, P. medians, S...