1986 Response of some members of the fish community to gizzard
shad removal from Chambers County Public Fishing Lake, Alabama.
Michaelsen (1902: 33) described Microchaetus griseus, focusing on external characters, mainly the annulation and position of setae, omitting a description of the excretory system and dorsal blood vessel, although observing the much-thickened septa 5/6-8/9, and a gizzard
in segments 6-7.
Similar trends in percent yields were observed for blood, head, feet, gizzards
, liver, heart, neck and intestines.
The price of baits used in the study was a commercial retail rate from the same crawfish dealer and was $0.79/kg for gizzard
shad and $0.48/kg for formulated bait.
Garman and Neilson (1992) note that the presence of gizzard
shad and detritivores in Virginia tidal freshwater suggest that autochthonous production is important in these systems relative to non-tidal areas upstream, where fishes primarily consume terrestrial arthropods (Garman, 1991).
Key words: Turdus pelios, feeding ecology, prey item, prey size, bill length, gizzard
, plant matter, Nigeria.
examination data were analyzed using a one-tailed student's t-test .
We examined the role of the omnivorous fish, gizzard
shad (Dorosoma cepedianum), in transporting nutrients from sediments into the water column and their subsequent impacts on phytoplankton.
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The weights of spleen, proventiculus, empty gizzard
, heart, liver, and empty intestines were measured and presented as a percentage of the total body weight (ratio of weight of organ to body weight).
Statistical analysis of internal organs (%) including liver, heart and gizzard
showed significant differences (Pa$?0.05) among different experimental groups (Table 3).
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Physical and chemical digestion takes place in the proventriculus and gizzard
, which regulate feed intake and energy balance .
Laboratory trials measured the consumption of bluegills and gizzard
shad by 9- to 14-inch largemouths in 6-foot diameter tanks at turbidities varying from 3 inches visibility to 13 inches.