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mx id: 826 | OBO id: HAO:0000666 | URI: http://purl.obolibrary.org/obo/HAO_0000666
ommatidium
Defined (both definition and relationships must be met)
Definition:
One of the facets of the compound eye.
written by: Tweedie, S., M. Ashburner, K. Falls, P. Leyland, P. McQuilton, S. Marygold, G. Millburn, D. Osumi-Sutherland, A. Schroeder, R. Seal, H. Zhang, and The FlyBase Consortium. 2009. FlyBase: enhancing Drosophila Gene Ontology annotations. Nucleic Acids Research 37:D555-D559.

Relationships / properties:
The ommatidium is a compound organ.
The ommatidium is part of the eye.

Figures
Aleiodes terminalis Cresson, 1869

Label usage (sensu)
ommatidium by Tweedie, S., M. Ashburner, K. Falls, P. Leyland, P. McQuilton, S. Marygold, G. Millburn, D. Osumi-Sutherland, A. Schroeder, R. Seal, H. Zhang, and The FlyBase Consortium. 2009. FlyBase: enhancing Drosophila Gene Ontology annotations. Nucleic Acids Research 37:D555-D559.
Comments and tags
xref added over 14 years ago by Andy Deans
  Reference: None provided.
  Cross reference: FBbt:00004510

alternative definition added about 14 years ago by Istvan Miko
Single sensory cell of a compound eye (see also facet).
  Reference: Gibson , G. A. P., J. D. Read , and R. Fairchild. 1998. Chalcid wasps (Chalcidoidea): illustrated glossary of positional and morphological terms ..
  Cross reference: None provided.

comment added almost 14 years ago by Matt Yoder
Although facet is considered to be equivalent to ommatidium in the fly_anatomy.obo (HAO uses it as cross ref: One of the facets of the compound eye.) facet is considered in many other references (e.g. Gibson et al. 1998, Gullan and Cranston 2005.....) to be equivalent to the lens on the surface of an ommatidium. REVIEW!!!
  Reference: Miko, I. 2009. -2019 Curator. Hymenoptera Anatomy Ontology.
  Cross reference: None provided.

alternative definition added over 14 years ago by Andy Deans
one of the component units of the compound eye
  Reference: Snodgrass, R. E. 1935. Principles of insect morphology. McGraw-Hill Book Co., Inc., New York & London 667 pp.
  Cross reference: None provided.


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