In:
Journal of Orthoptera Research, Pensoft Publishers, Vol. 27, No. 2 ( 2018-06-29), p. 97-106
Abstract:
Natural hybridization between species provides an opportunity to study the mechanisms that maintain independent lineages and may help us understand the process of speciation. The New Zealand tree wētā species Hemideinathoracica produces F 1 hybrids where it lives in sympatry with two closely related species: Hemideinacrassidens and Hemideinatrewicki . This study looked at the viability and fertility of F 1 hybrid wētā between H.thoracica and H.crassidens that were collected from the wild and kept in captivity. The hybrids appeared to have normal viability from the late juvenile stage, with all male wētā maturing at a late instar. Male F 1 hybrids displayed normal mating behavior and one male produced offspring in captivity. In contrast to Haldane’s rule, female F 1 hybrids appeared to be infertile; they refused to mate and did not produce eggs. No evidence of Wolbachia infection was identified in any of the three North Island Hemideina species.
Type of Medium:
Online Resource
ISSN:
1937-2426
,
1082-6467
DOI:
10.3897/jor.27.14963
DOI:
10.3897/jor.27.14963.fig1
DOI:
10.3897/jor.27.14963.fig2
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2018
detail.hit.zdb_id:
2173771-X
SSG:
12
