Spermathecal pores

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August undefined, 2024

WebJan 1, 2024 · Four pairs of spermathecal pores are present in earthworm through which spermatheca (receives and stores sperms during the copulation process) opens. Complete answer: -Option (A) is correct. In earthworms, spermatheca is an organ of the female reproductive tract and it is an internal sac that is pear-shaped. WebJan 1, 2024 · Four pairs of spermathecal pores are present in earthworm through which spermatheca (receives and stores sperms during the copulation process) opens. …

External Apertures of Pheretima - Microbiology Notes

WebSep 1, 2024 · Spermathecal pores one pair, ventral, in 7/8, about 0.12 body circumference apart ( Figure 4 ). Male pores paired in 10/11, between setae b and c, each on the center … WebSpermatheca is pear shaped internal sacs, which receive and store sperm during the process of copulation. There are four pairs of spermatheca present in an earthworm in … nuclear knight

Earthworm- Reproductive System, Copulation, Cocoon formation

WebThe male reproductive organ of Megascolecidae includes testes, seminal vesicles, spermathecae, prostate gland and spermathecal pores. The sperm can be found in testes … WebNov 7, 2014 · One species, P. longigula n. sp., belongs to the P. montana species group, characterized by having a pair of spermathecal pores in the intersegmental furrow of 7/8 and penial sheaths in the copulatory bursae. Two species, P. vergrandis n. sp. and P. concepcionensis n. sp., are monothecal. WebSpermathecal Pores: There are four pairs of small ventrolateral spermathecal apertures lying inter-segmentally between the grooves of the segments 5/6, 6/7, 7/8 and 8/9. 5. Nephridiopores: A large number of very minute nephridiopores are found situated throughout the body of earthworm except few anterior segments. These pores are the apertures ... nine by dream plaza

New species of Pheretima, Amynthas, Polypheretima, and …

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WebJun 6, 2013 · Amynthas daeari Blakemore sp. n. has spermathecae in 6/7/8 complying with an Amynthas tokioensis spp-group, whilst Amynthas jinburi Blakemore sp. n. has spermathecal pores in 5 & 6 strictly complying with Sims and Easton's (1972)Amynthas canaliculatus-group. WebMegascolex (Oligochaeta: Megascolecidae) are endemic species to India and Sri Lanka, however, to date their molecular taxonomy and phylogenetic relationships have not been reported. We applied the first integrative approach using morpho-anatomical nine carbons nameWebThe new species is characterized by three pairs of spermathecal pores in intersegments 6/7/8/9, spermathecal ducts with dense micronephridia, no genital markings in spermathecal and male... nine by nine partition violon

"WebJun 1, 2024 · Spermathecal pores five pairs in 4/5–8/9, 4.5 mm distance between spermathecal pores, 0.28 circumference apart; male pores superficial on oval porophores in XVIII at 8th setal lines, 0.22 circumference apart. … " - Spermathecal pores

Spermathecal pores

WebJul 7, 2024 · Spermathecae are 4 pairs in each of 6th, 7th, 8th, 9th segment situated ventro laterally. They store sperm in diverticula during copulation and the ampulla provide … WebTwo species are Amynthas, namely Am. magnaprostata sp. nov. of the Am. sieboldi group, characterised by having three pairs of spermathecal pores in 6/7–8/9 and a holandric male system, and Am. elnidoensis sp. nov. of the Am. minimus group, characterised by having a pair of spermathecal pores in 5/6.

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Webduring fixation. Male pores on XV between chaetae b and c, with large swollen porophores extending to XIV and XVI (Fig. 1A). Female pores on XIV over chaetae b. Spermathecal pores paired in 13/14 and 14/15, aligned with chaetae cd. Nephro-pores beginning in V, inconspicuous, aligned slightly dorsad to chaetae b. Chaetae WebJun 1, 2015 · Spermathecal pores: Paired on a small glandular elevation in 12 between setae a—a . Glandular swellings: One pair on 11 around setae ab connected with the spermathecal pore on both sides by slightly curved grooves. Internal characters: Muscular gizzard: Large in 6. Septa: 7/8 slightly thickened, 8/9–11/12 moderately strengthened.

http://tb.plazi.org/GgServer/html/03F94452DD20FF94FF44E9CCFAA366F3 WebSymbols: fp, female pore(s); mp, male pores; sp, spermathecal pores. from publication: New species of Amynthas, Pheretima and Pleionogaster (Clitellata: Megascolecidae) of the Mt. Kitanglad Range ...

WebIn male cockroach, genital pouch contains 1) Dorsal anus, ventral genital pore and gonapophysis 2) Dorsal anus, gonopore and gonapophysis 3) Ventral anus, dorsal spermathecal pore, gonapophysis 4) Gonopore, spermathecal, pores and collateral glands 56. The given figure is related with the head region of cockroach. WebMay 30, 2024 · 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 males …

WebEither ovo spermathecal pore in segment XIV opens into a conical sper mathecal atrium with wider ental than ectal ends (Figures 5- 6). The muscular atrium opens into a tubular, finger-like receptaculum which may be reflexed, looped or elongated.

WebJan 20, 2016 · Spermathecae are also called seminal receptacles as they store spermatozoa from another worm during copulation. Function: They store sperm in diverticula during copulation and the ampulla provide … nine canyon windWebAlso, two are Metaphire, namely Me. santalourdesensis sp. nov. of the Me. merabahensis group, characterised by having three pairs of spermathecal pores at 5/6–7/8, and Me. … nine branched menorahWebSpermathecal pores are located ventrolaterally in the intersegmental grooves of 5/6, 6/7, 7/8 and 8/9 (4 pairs). Female genital pore is on the 14th segment on the midventral line and one pair of male genital pores are present on the 18th segment on the ventrolateral side. Genital papillae are present on segments 17th and 19th. nuclear kidney function testWebMar 18, 2016 · Male pores paired within copulatory bursae opening on segment xviii; one or more pairs of spermathecal pores in intersegmental furrows between 4/5 and 8/9. Clitellum annular, covering three segments (xiv to xvi). Single midventral female pore on xiv. Genital markings usually absent. nine canyon wind projectWebOct 21, 2024 · Spermathecal pores two pairs in 7/8 and 8/9; female pore in segment 14; male pores in small transverse protuberances in segment 18, each protuberance containing apertures of 4–9 penial setae. Gizzard … nuclear kidney scanWebJul 18, 2016 · Spermathecal opening: Opening of spermathecal are called spermathecal pore. Four pairs of spermathecal pores are found ventrolaterally and intersegmentally … nuclear knowledge managementWebSpermathecal pores are used to receive sperm from male pores during copulation and are the essential organ for sexual reproduction. The positions of spermathecal pores are an important reproductive trait and were used in a phylogenetic study of Amynthas evolution (Sun et al., 2024). We recorded the positions spermathecal pores of the specimens. nine by nine game