What Do Gizzard Shad Eat - Feeding Shad Feb 2, 2019 16:26:17 GMT
Post by Virginia Striper©® on Feb 2, 2019 16:26:17 GMT
What Do Gizzard Shad Eat - Feeding Shad
What Do Shad Eat - Do you need to Feed Shad?
In the Wild Gizzard Shad eat algae and disintegrated or eroded matter and material (detritus) off the bottom as evidenced by the occurrence of both plankton and sand in their digestive tracts (Kutkuhn 1958; Pierce et al. 1981).
Bodola (1965) found that digestive tract contents of adult gizzard shad captured in open waters consisted predominantly of free-floating phytoplankton, whereas shad captured in littoral vegetation contained Cladocera, Copepoda, Rotifera, and small aquatic insect larvae and those captured in very turbid waters contained mostly mud.
Gizzard shad grow quickly and attain a much larger size than threadfin some adults reaching 18 inches and weigh 2-pounds. This rapid growth means that largemouth and smallmouth bass are able to eat shad for only a short time each spring.
Little has been published on the feeding and care of Gizzard and Threadfin Shad in captivity.
In one laboratory experiment, Threadfin Shad were maintained in 40-gallon tanks on a diet of live daphnia, chironomid larvae (bloodworms), and tubifex worms. Aquarists at the Mississippi Museum of Natural Science in Jackson that has a display of Gizzard Shad admit that the fish are delicate and that few of the shad they catch -- about one in 200 -- survive the journey from stocking ponds to the aquarium.
The few that do survive, however, readily accept prepared food and live a long time.
They have been fed a diet of live daphnia, chironomid larvae (bloodworms), and tubifex worms or micro-pellets.
The feeding selectivity of gizzard shad for plankton is determined by the size of the plankton relative to the gill raker spaces (Mummert 1983; Drenner et al.1984) as well as the escape ability of the plankton (Drenner et al. 1978, 1982a).
Abundance and diversity of items eaten may vary widely with season and locality (Bodola 1965) with apparent variability in food preferences among age groups and populations being the result of capture location or availability of prey items (Bodola 1965; Jester and Jensen 1972; Pierce 1977).
Then shad and young bass may actually compete for the same limited planktonic food.
Zooplankton is at the base of the food chain, feeding on microscopic plants and being fed upon by aquatic insects, fish and salamanders.
Their sizes usually range from one-tenth of a millimeter to four millimeters, which is smaller than the head of a pin.