Product Code Database
The spermatheca (pronounced : spermathecae ), also called receptaculum seminis (: receptacula seminis), is an organ of the female reproductive tract in , e.g. , ,Tales V. Pascini, and Gustavo F. Martins. 2017. "The insect spermatheca: an overview". ZOOLOGY doi.org some , Oligochaeta worms and certain other and .David M. Sever, Cynthia K. Tait, Lowell V. Diller, and Laura Burkholder. 2004. Ultrastructure of the Annual Cycle of Female Sperm Storage in Spermathecae of the Torrent Salamander Rhyacotriton variegatus (Amphibia: Rhyacotritonidae). JOURNAL OF MORPHOLOGY 261:1–17 Its purpose is to receive and store sperm from the male or, in the case of hermaphrodites, the male component of the body. Spermathecae can sometimes be the site of fertilisation when the are sufficiently developed.Jan A. Pechenick. Biology of the Invertebrates. New York: McGraw Hill, 2005
Some species of animal have multiple spermathecae. For example, certain species of earthworms have four pairs of spermathecae—one pair each in the 6th, 7th, 8th, and 9th segments. The spermathecae receive and store the spermatozoa of another earthworm during copulation.Jan A. Pechenik. Biology of the Invertebrates. New York: McGraw Hill, 2010, pg. 322 They are lined with epithelium and are variable in shape: some are thin, heavily coiled tubes, while others are vague outpocketings from the main reproductive tract. It is one of the many variations in sexual reproduction.
The nematode Caenorhabditis elegans has two spermathecae, one at the end of each gonad. The C. elegans spermatheca is made up of 24 smooth muscle-like cells that form a stretchable tubular structure. Microfilament line the spermatheca in a circumferential manner. The C. elegans spermatheca is used as a model to study mechanotransduction.
An beekeeping may examine the spermatheca of a dead queen bee to find out whether it had received sperm from a male. In many species of stingless bees, especially Melipona bicolor, the Queen bee lays her eggs during the provisioning and oviposition process and the spermatheca fertilizes the egg as it passes along the oviduct. The Haplodiploidy system of sex determination makes it possible for the queen to choose the sex of the egg.Koedam, D., et al. "The Behaviour Of Laying Workers And The Morphology And Viability Of Their Eggs In Melipona Bicolor Bicolor." Physiological Entomology 26.3 (2001): 254-259. Academic Search Premier. Web. 26 Sept. 2015.
|
|
