Impaired spermatogenesis in the finch hybrid L. castaneothorax by L. punctulata: transmission electron microscopy and genetic analysis.
MA Swan, L Christidis
Molecular Reproduction and Development | Published : 1987
As part of a project to determine whether there is any correlation between the form of hybrid sterility and the genetic relatedness of the parental species, we studied a male intrageneric hybrid between two finch species (Lonchura castaneothorax X L. punctulata), and compared the ultrastructural basis of hybrid sterility in this species with that reported by Swan  for an intergeneric bird hybrid. In the latter study the sterility appeared to have an autoimmune basis, due to lack of Sertoli-Sertoli tight junctions. In the hybrid examined in the present study, lanthanum tracing showed that the junctions were tight. There was no testicular immune reaction; the parental species were almost..View full abstract