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All male / Mostly Male Tilapia Hybrids
I was recently asked the following question on one of the other aquaponics forums. I thought it would be worthwhile to share this here as well.
Hi Josh,
Yes, this is possible, and there are many different crosses that will work. However, you typically need pure parent stock if you want predictable results. Even then, sometimes particular strains within a species can produce varying results. Here are some examples of various study results with different crosses.
O. macrochir male crossed to female of:
O. mossambicus - 100% male (Majumdar, 1983)
O. spilurus - 97.9% male (Majumdar, 1983)
O. niloticus - 100% male (Pruginin, 1967)
O. niloticus male crossed to female of:
O. aureus - 75-95% males (Pruginin, 1967)
O. horonorum - 75% males (Pruginin, 1967)
O. aureus male crossed to female of:
O. niloticus - 50-100% male (Lee, 1979 and Wohlfarth, 1994)... unpredictable results in several studies
O. niloticus (Stirling strain) - 100% male (Marengoni, 1998)
O. niloticus (Uganda strain) - 96-100% male (Proginin, 1975)
O. mossambicus - 100% male (Beardmore, 2001)
O. mossambicus male to female of:
O. aureus - 89% male (Pierce, 1980)
O. hornorum male to female of:
O. niloticus - 100% male (Lee, 1979 and Wohlfarth, 1990)
You can also cross many fish from the Tilapia genus with fish from the Oreochromis genus and get all males/mostly males.
White Brook Tilapia
Kansas City, MO USA
Quote:
Originally Posted by JoshRonin
Hey Kellenw,
I heard in a podcast that you can breed two different types of tilapia and end up with fry that are mostly male. The host didn't say which breeds, just that it would be a great way to keep your fish from mating in your fish tanks. Was curious from an actual breeder if you've heard of this and what breeds do this? Thanks.
Originally Posted by JoshRonin
Hey Kellenw,
I heard in a podcast that you can breed two different types of tilapia and end up with fry that are mostly male. The host didn't say which breeds, just that it would be a great way to keep your fish from mating in your fish tanks. Was curious from an actual breeder if you've heard of this and what breeds do this? Thanks.
Hi Josh,
Yes, this is possible, and there are many different crosses that will work. However, you typically need pure parent stock if you want predictable results. Even then, sometimes particular strains within a species can produce varying results. Here are some examples of various study results with different crosses.
O. macrochir male crossed to female of:
O. mossambicus - 100% male (Majumdar, 1983)
O. spilurus - 97.9% male (Majumdar, 1983)
O. niloticus - 100% male (Pruginin, 1967)
O. niloticus male crossed to female of:
O. aureus - 75-95% males (Pruginin, 1967)
O. horonorum - 75% males (Pruginin, 1967)
O. aureus male crossed to female of:
O. niloticus - 50-100% male (Lee, 1979 and Wohlfarth, 1994)... unpredictable results in several studies
O. niloticus (Stirling strain) - 100% male (Marengoni, 1998)
O. niloticus (Uganda strain) - 96-100% male (Proginin, 1975)
O. mossambicus - 100% male (Beardmore, 2001)
O. mossambicus male to female of:
O. aureus - 89% male (Pierce, 1980)
O. hornorum male to female of:
O. niloticus - 100% male (Lee, 1979 and Wohlfarth, 1990)
You can also cross many fish from the Tilapia genus with fish from the Oreochromis genus and get all males/mostly males.
White Brook Tilapia
Kansas City, MO USA
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