Article

Further Studies of Hybridization in Spadefoot Toads (Genus Scaphiopus)

March 1963
Copeia 1963(1):115

DOI:10.2307/1441278

Authors:

Hybridization tests were conducted between the geographically separated Scaphiopus couchi and S. h. holbrooki to determine relative viability of the hybrid embryos as compared with that of the control embryos of the parent species. If the male parent is holbrooki, viability was found to be approximately 24% less than that of the control. The reciprocal cross does not succeed. In backcrosses hybrids showed a drastic reduction of fertility, but female F₁ hybrids appear to be more fertile than males.

EMBRYONIC TEMPERATURE ADAPTATIONS AND GENETIC COMPATIBILITY IN TWO ALLOPATRIC POPULATIONS OF THE SPADEFOOT TOAD, SCAPHIOPUS HAMMONDI

Article

Dec 1967
EVOLUTION

Herbert A Brown

BIOLOGY OF DESERT AMPHIBIANS AND REPTILES

Chapter

Dec 1968

Wilbur W. Mayhew

ResearchGate has not been able to resolve any references for this publication.

Article

Interspecific Hybridization between Bursaphelenchus xylophilus and B. mucronatus (Aphelenchida: Aphe...

February 1986 · Applied Entomology and Zoology

Yasuharu MAMIYA

Crossing experiments were conducted among three isolates of Bursaphelenchus xylophilus and eight isolates of B. mucronatus from wide geographical sources in Japan. Crossing between isolates of the same species produced fertile hybrids in every case. In all crossing combinations between B. xylophilus and B. mucronatus, F1 progenies were produced. However, the number of produced hybrids were ... [Show full abstract] limited and some of them were aberrant. These F1 hybrids failed to produce the F2 generation. Back crossing of F1 hybrids to their parent adults also failed to achieve progeny production. These results are indicative of a valid separation of B. mucronatus from B. xylophilus, although they are closely related. © 1986, JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY. All rights reserved.