Texas has produced triploid LMB and stocked them in a least 1 experiential lake ( not a growout pond but a lake of some size with other fish).

TPW used triploid Fla. LMB in several of its studies which are not available to the public. Several of the studies on these matters are still ongoing in TX lakes and more info will soon be available.

One of the most interesting bass stocking experiments going on right now is Texas Parks and Wildlife Department's introduction of triploid largemouth bass. These are bass that have three sets of chromosomes instead of two (hence the term triploid), so they are effectively sterile and will not reproduce. Triploidy, as it is called, is often used in fisheries management to produce sterile fish. The two most common methods of producing triploid fish are by heating the eggs or placing them under high pressure after they are fertilized; the resulting fish that hatch from these treated eggs are triploid and unable to reproduce. The hope is that bass that do not reproduce and do not spend the time and energy necessary to spawn will grow faster and larger than bass that do spawn. This technique may also offer the opportunity to stock a genetic strain of bass that, because they are sterile, will not interbreed with the existing bass population and change the genetics of it. The jury is still out right now, and this is definitely an experimental stocking at this stage, but the possibilities exist for producing big bass and refining bass management using this technique.



Triploid largemouth bass, Micropterus salmoides, were produced by using hydrostatic pressure treatments five minutes after fertilization. Treatments ranged from 4,000 p.s.i. for 3 minutes to 8,000 p.s.i. for 1 minute was best, yielding 100% triploids and a relatively low mortality. Contributors: Gary P. Garrett, Heart of the Hills Research Station, Texas Parks and Wildlife Department, Ingram, TX, 78025, United States
Matthias C.F. Birkner, Department of Wildlife and Fisheries Sciences, Texas A & M University, College Station, TX, 77843-2258, United States
John R. Gold, Department of Wildlife and Fisheries Sciences, Texas A & M University, College Station, TX, 77843-2258, United States

Lake Balmorhea - 2005 Survey Report - A special research project included the introduction of triploid Florida largemouth bass from 1999 through 2003. Genetic analyses demonstrated that some cross-breeding was occurring between Northern and Florida largemouth bass, indicating that not all of the stocked Florida largemouth bass were sterile.

Sweetwater Reservoir

Triploid Florida-strain largemouth bass marked with coded wire tags were stocked from 1996 to 2000 as part of a research project to investigate whether it was possible to create and maintain a non-reproductive, trophy Florida-strain largemouth bass fishery while maintaining high catch rates of naturally reproducing fish. Due to the poor survival of the marked fish this project was terminated in 2001.