Epididymal Influence on Acquisition of Sperm Motility in the Gekkonid Lizard<i>Hemidactylus flaviviridis</i>

Nirmal, B. K.; Rai, Umesh

doi:10.3109/01485019708987908

Cited by 10 publications

(5 citation statements)

References 5 publications

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“…1988; Morel et al . 1991, 1993, 2000; Nirmal and Rai 1997, 2000; M A Akbarsha, unpublished observation in C. versicolor ). Several other types of sperm physiology have been indicated in a few studies (Esponda and Bedford 1987; Shahul Hamid and Akbarsha 1989; Velmurugan and Akbarsha 1992; Nirmal and Rai 1997; Rai and Nirmal 2003).…”

Section: Discussionmentioning

confidence: 92%

“…1991, 1993, 2000; Nirmal and Rai 1997, 2000; M A Akbarsha, unpublished observation in C. versicolor ). Several other types of sperm physiology have been indicated in a few studies (Esponda and Bedford 1987; Shahul Hamid and Akbarsha 1989; Velmurugan and Akbarsha 1992; Nirmal and Rai 1997; Rai and Nirmal 2003). The distal region, with its larger diameter, shorter epithelium, highly muscular tunica and more spacious lumen, indicates a role in storage of sperm, as in mammals.…”

Section: Discussionmentioning

confidence: 92%

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Histological variation along and ultrastructural organization of the epithelium of the ductus epididymidis of the fan‐throated lizard Sitana ponticeriana Cuvier

2006

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 Abstract Akbarsha, M.A., Kadalmani, B. and Tamilarasan, V. 2006. Histological variation along and ultrastructural organization of the epithelium of the ductus epididymidis of the fan-throated lizard Sitana ponticeriana Cuvier. -Acta Zoologica (Stockholm) 87 : 181-196The epididymis of the fan-throated lizard Sitana ponticeriana was subjected to light and transmission electron microscopic analysis to find the histological variation along the ductus epididymidis, describe the various cell types in the epithelium and compare the resulting descriptions with what is known for other reptiles and for amniotes. The ductus epididymidis of this lizard is differentiated along its length into four histologically distinct zones, initial segment, caput, corpus and cauda. The first three zones appear to be associated with secretion and absorption/endocytosis whereas the cauda appears to be concerned with absorption/endocytosis and storage. The epithelium consists of six different cell types, principal, narrow, apical, clear, basal and intraepithelial leucocytes as in the mammals. Principal cells, basal cells and intraepithelial leucocytes are present along the entire length. Narrow cells and apical cells are confined to the initial segment whereas clear cells occur in the cauda only. The principal cells from the initial segment to the corpus produce biphasic secretion granules measuring 1-2 µ m in diameter. This paper reports on four histologically distinct zones along the length of the ductus epididymidis of the lizard S. ponticeriana and six different cell types in the lining epithelium.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 92%

Histological variation along and ultrastructural organization of the epithelium of the ductus epididymidis of the fan‐throated lizard Sitana ponticeriana Cuvier

2006

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“…The reptilian testicular spermatozoa are immotile and subsequently gain motility upon their residence in the ductus epididymis (Depeiges & Dacheux, ; Nirmal & Rai, ), similar to the mammalian spermatozoa (Cooper, ). It is possible that initial transport of the L. ocellata testicular spermatozoa to the rete testis, which lacks cilia and muscular tunics, is aided by contractile activity of myoid cells surrounding the seminiferous tubules, as suggested by previous studies (Gribbins & Rheubert, ; Kumar et al, ; Rheubert et al, ; Unsicker & Burnstock, ).…”

Section: Discussionmentioning

confidence: 99%

Microanatomy of the testes and testicular ducts of the butterfly lizard, Leiolepis ocellata Peters, 1971 (Reptilia: Squamata: Agamidae) during the active reproductive period

Pewhom

Srakaew

2018

Acta Zoologica

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The microanatomy of the testes and testicular ducts (rete testis, ductuli efferentes, ductus epididymis and ductus deferens) of Leiolepis ocellata (Agamidae) was investigated using light microscopy including histochemistry. Each testis contains seminiferous tubules and interstitial tissues. The former house spermatogenic cells (spermatogonia A & B, preleptotene, primary and secondary spermatocytes, spermatids (steps 1–8) and spermatozoa) and Sertoli cells, while the latter comprise peritubular and intersitial tissues. The rete testis is an anastomosing duct, having intratesticular and extratesticular portions. The proximal region of ductuli efferentes has wider outer ductal and luminal diameters than those of the distal region. The convoluted ductus epididymis is subdivided into four regions (initial segment, caput, corpus and cauda), based on the ductal diameter, epithelium characteristics and cell components. The ductus deferens has the greatest diameter and is divided into the ductal and ampulla ductus deferens. The ductal portion is subdivided into the proximal and distal regions, based on the epithelium types and ductal diameters. The ampulla ductus deferens is a fibromuscular tube, having numerous mucosal folds projecting into the lumen. Spermiophagy is detectable in the ductus epididymis and ductus deferens. The present results contribute to improved fundamental knowledge on the microanatomy of the reptilian reproductive system.

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“…Sperm acquire motility as they move through the epididymis of L. vivipara (Depeiges & Dacheux, 1985) or Hemidactylus flaviviridis (Nirmal & Rai, 1997), but actual motility is highly variable. Motility values are reported to be in the 70% range (percent of total sperm) in the corpus epididymis of the lizards H. flaviviridis and L. vivipara, approximately 40% in whole epididymides of the turtles T. scripta (Gartska & Gross, 1990) and S. odoratus (Gist, Turner, & Congdon, 2000), and in the 1-10% range in sperm harvested from the epididymides of C. picta or T. scripta (Gist et al, 2000).…”

Section: Epididymismentioning

confidence: 99%

Hormones and the Sex Ducts and Sex Accessory Structures of Reptiles

Gist

2011

Hormones and Reproduction of Vertebrates

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Epididymal Influence on Acquisition of Sperm Motility in the Gekkonid LizardHemidactylus flaviviridis

Cited by 10 publications

References 5 publications

Histological variation along and ultrastructural organization of the epithelium of the ductus epididymidis of the fan‐throated lizard Sitana ponticeriana Cuvier

Histological variation along and ultrastructural organization of the epithelium of the ductus epididymidis of the fan‐throated lizard Sitana ponticeriana Cuvier

Microanatomy of the testes and testicular ducts of the butterfly lizard, Leiolepis ocellata Peters, 1971 (Reptilia: Squamata: Agamidae) during the active reproductive period

Hormones and the Sex Ducts and Sex Accessory Structures of Reptiles

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