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- Title
Rare occurrence of embryonic twins in the Hihi (Stitchbird) Notiomystis cincta: an endangered passerine of New Zealand.
- Authors
THOROGOOD, ROSE; EWEN, JOHN G.
- Abstract
The article examines the breeding success of the Hihi, a stitchbird, closely monitored endangered endemic passerine in New Zealand. The study was conducted by the New Zealand Department of Conservation and universities. It focuses on the twinning of the embryo of the Hihi bird that is said to be can occur under three circumstances. This includes the early embryonic cleavage resulting in identical monozygotic twins, two blastoderms fertilized sharing a single yolk or two blastoderms on individual yolks encased with the same shell. According to the author, the incidence of twinning in birds is rare and taxonomically diverse and is generally identified incidentally during experiments of poultry farming. It is inferred that twinning of birds is generally possible but had gone unnoticed.
- Subjects
NEW Zealand; STITCHBIRD; EMBRYONIC stem cells; BLASTODERM; BIRD breeding; AVIARIES; ANIMAL culture; ENDANGERED species; RARE birds
- Publication
Ibis, 2006, Vol 148, Issue 4, p828
- ISSN
0019-1019
- Publication type
Article
- DOI
10.1111/j.1474-919X.2006.00580.x