可能有關的參考文獻：
Interspecific hybridization in poeciliids.
George T, Pandian TJ.
Department of Genetics, School of Biological Sciences,
Madurai Kamaraj University, India.
Indian J Exp Biol. 1997 Jun;35(6):628-37
Seventy per cent attempts to ensure interspecific hybridization
between Poecilia velifera and P. sphenops were successful and
led to the production of true hybrids, but not gynogens or triploids,
as evidenced by the mottled or striped colour, chromosome number
(2n = 46) and response from scale transplantation. Most hyrbids were
infertile as they failed to cross among themselves or with their
respective parents; however they were more closely related to P.
sphenops as indicated by mating responses and scale transplantation
studies. Heterospecific impregnation resulted in 40% reduction in
fecundity but retention of interparturition period characteristic
of the female species. A skewed ratio of 3 Female Female:2 Male Male,
observed in the laboratory populations of both P. velifera and
P. sphenops, was also sustained among the progenies sired from
heterospecifically inseminated females. The colour patterns of
hybrids were of two types: mottled and striped, the latter one
being reported for the first time.
Interspecific hybridization in poeciliids.
http://www.ncbi.nlm.nih.gov/entr ... 8&dopt=Abstract
