Blackwater Hatchery spawns the broodfish
, then sends the number of offspring required for the peninsula Florida stockings to Richloam Hatchery after they are 3 days old.
Native Fish Australia and researchers from the Arthur Rylah Institute contributed to the breeding program by collecting Macquarie perch broodfish
from both waters.
The use of anesthetics for broodfish
greatly facilitated the handling of both sexes during the spawning process.
Florida pompano eggs normally have a single oil globule, although eggs from some broodfish
reportedly have several small oil globules.
Before then, we only knew that certain broodfish
were in the pond, and when we collected the spawns there was no telling who the parents were," says Waldbieser.
We have developed procedures that involve a combination of hormone treatments and breeding strategies that have resulted in the production of large numbers of broodfish
with the YY sex genotype.
Catfish growers indicated that their stocks of broodfish
, foodsize fish, stockers, and fingerlings were all higher than in 1998.
Most of the acreage in Mississippi (85,300) and elsewhere (142,830) is devoted to raising food-sized fish, but a substantial amount is reserved for broodfish
and fingerlings, and some is left fallow -- much like idle farmland -- to recover.
They're hoping to use huge broodfish
to spawn a race of superbass.
Fries & Harvey (1989) expressed concern about use of incorrectly identified (hybrid) Morone as broodfish
in enhancement programs and the deleterious effects stocking their backcross offspring could have on the genetic integrity of resident populations.
2003) suggested the gene flow observed in microsatellite markers argued against the current Texas policy of stocking only into the bay from which broodfish
That's a lot of guppies: The Department of Fish and Game's hatcheries produced 65 million fish in 1995, ranging from minute fingerlings to 7-pound broodfish