Spermathecae definition
The spermatheca , also called receptaculum seminis (plural: receptacula seminis), is an organ of the female reproductive tract in insects, e.g. ants, bees, some molluscs, oligochaeta worms and certain other invertebrates and vertebrates. 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 someti… WebAug 17, 2024 · Spermathecae were enmeshed in muscle fibers of the ovipositor. The majority of species examined had spermathecae with a single chamber with some cuticular invagination ( Fig. 2b–d ), forming partially separated lumina in some species.
Spermathecae definition
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WebSpermathecae two pairs in XIV and XV, pear-shaped, containing sperm, the second pair slightly larger. Septa 5/6 and 10/11 somewhat thickened, 6/7 ... to give a broader definition of Prosellodrilus and split it into two subgenera: the nominal one, and a second subgenus for which we propose the name Maghrebiella. WebNov 30, 2024 · Compared to females with two spermathecae, females with three spermathecae store a greater total number of sperm and can produce offspring a greater length of time. However, they did not produce a greater total number of offspring. Thus, additional long-term sperm storage in insects may increase female fitness through …
Webspermatheca. n a sac or cavity within the body of many female invertebrates, esp. insects, used for storing spermatozoa before fertilization takes place. (C19: see sperm1, theca) ♦ … WebMales possess a pair of large bumps or tubercles behind their head, these structures are much smaller in females. These horns are known as pronatal humps. Gromphadorhina portentosa is one of the largest species of the …
Webspermatheca. [ spur-m uh- thee-k uh ] noun, plural sper·ma·the·cae [spur-muh-thee-see]. Zoology. a small sac or cavity in female or hermaphroditic invertebrates used to store … Webspermarche pronunciation - How to properly say spermarche. Listen to the audio pronunciation in several English accents.
WebThis is the meaning of spermatheca: spermatheca (English)Origin & history From sperma-+ theca. Pronunciation (Brit. Eng.) IPA: /ˌspɜːməˈθiːkə/ Rhymes: -iːkəNoun spermatheca (pl. spermathecas or spermathecae) A small sac within the reproductive tract of some female invertebrates, such as insects, which stores sperm until it is used to fertilize the ova
Webspermatheca. (spûr′mə-thē′kə) n. pl. spermathe·cae (-sē) A receptacle in the reproductive tract of many female or hermaphrodite invertebrates and certain female vertebrates, in … instalar fnf con week 7 noviembre 2021 pcWebsper·math·e·cae This dictionary definitions page includes all the possible meanings, example usage and translations of the word spermathecae. Did you actually mean spermatic or … jewelry store that buys jewelry near meWebMay 5, 2024 · Drosophila spermathecae consist of class-III secretory units, in which each secretory cell (SC) discharges its products to the central lumen through an end-apparatus and a canal. Secretory unit formation in Drosophila spermathecae utilizes a fixed cell lineage, in which each secretory unit precursor (SUP) divides to produce one pIIb cell and ... jewelry store that offers financingWebspermatheca (plural spermathecas or spermathecae) A small sac within the reproductive tract of some female invertebrates, such as insects, which stores sperm until it is used to fertilize the ova. Derived terms . spermathecal; Translations . small sac. ... jewelry store to build creditWebMay 6, 2016 · Definition, terminology, and general structure of Scutelleridae spermatheca. The general structure of scutellerid spermatheca ... The common feature of the spermathecae belonging to this type is a relatively short intermediate part with a long flexible zone and an absent or reduced distal flange. The most diverse structure is the … instalar flutter en windowsWebMay 30, 2024 · Spermathecae are present in sixth, seventh, eighth and ninth segments of the earthworm. They store the sperms received from another earthworm during copulation. What is Spermathecal pore? Spermatheca is an accessory organ in females in some insects having an opening into the common oviduct. It stores sperms which are released by the … jewelry store toronto canadaWebSpermathecae, however, are not required to store sperm. Some female vertebrates store sperm within the confines of their reproductive tracts by co-opting pre-existing structures such as the lining of the uterus, cervix, oviducts and vagina. This ‘make-do’ approach to sperm storage has been observed primarily in mammals instalar font awesome angular