Sexual segment of the kidney of the Indian house lizard, <i>Hemidactylus flaviviridis</i> Rüppell

Sanyal, Mrinal K.; Prasad, M. R. N.

doi:10.1002/jmor.1051180405

Cited by 40 publications

(20 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this study, hypertrophy and recrudescence of RSS were in synchrony with androgen secretion and spermatogenic activity, which was similar to that reported for other species of lizards (Krohmer, 2004;Prasad and Sanyal, 1969;Sanyal and Prasad, 1966;Sever and Hopkins, 2005). This may signify that the steroids have some role in the development of RSS (Krohmer et al, 1987.…”

Section: Discussionsupporting

confidence: 87%

The reproductive cycle of the male house gecko, Hemidactylus flaviviridis, in relation to plasma steroid concentrations, progesterone receptors, and steroidogenic ultrastructural features, in Oman

Al-Amri

Mahmoud

Waring

et al. 2013

General and Comparative Endocrinology

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 87%

The reproductive cycle of the male house gecko, Hemidactylus flaviviridis, in relation to plasma steroid concentrations, progesterone receptors, and steroidogenic ultrastructural features, in Oman

Al-Amri

Mahmoud

Waring

et al. 2013

General and Comparative Endocrinology

View full text Add to dashboard Cite

“…Hypertrophy and recrudescence of the RSS are synchronous with androgen secretion and spermat- ogenic activity (e.g., Bishop, 1959;Sanyal and Prasad, 1966;Prasad and Sanyal, 1969;Weil, 1984;Krohmer, 2004). Even in snakes, which show modest or no regression of the RSS during sexual quiescence, variations in the appearance and makeup of the granules provide an identifiable and quantifiable seasonal pattern that can be correlated with the concentration of plasma androgens (Krohmer, 2004).…”

Section: Seasonal Variationmentioning

confidence: 98%

Renal sexual segment of the ground skink, Scincella laterale (Reptilia, Squamata, Scincidae)

Sever

Hopkins

2005

Journal of Morphology

View full text Add to dashboard Cite

Mature squamates possess hypertrophied regions of the distal urinary ducts, the renal sexual segment (RSS). The RSS is believed to provide seminal fluid that mixes with sperm and is released into the female cloaca during coitus. This study is the first to describe ultrastructure of the RSS in a lizard collected throughout the active season. The species examined, Scincella laterale, represents the largest family (Scincidae: 1,200 species) of lizards. Although sperm are present in the posterior ductus deferens of male S. laterale throughout the year, an annual spermatogenic cycle occurs that results in spermiation in spring, coinciding with maximum development of the RSS. Female S. laterale may possess stored sperm in vaginal crypts from March-May and large oviductal eggs April-June. Thus, the correlation between mating and RSS activity observed in other squamates is also found in S. laterale. Cytologically, the active RSS consists of columnar cells with numerous apical, electron-dense secretory vacuoles which are released by an apocrine process. The granules stain positively for proteins with bromphenol blue and react with PAS for neutral carbohydrates. After the mating season the RSS undergoes recrudescence and the electron-dense granules are replaced by a mucoid secretion that characterizes more proximal portions of the nephric tubules throughout the year. Little variation in ultrastructure of the RSS occurs between S. laterale and Cnemidophorus lemniscatus (Teiidae), the only other lizard in which seasonal variation of the RSS has been studied using similar methods. Females exhibit differentiation similar to that of males in the distal urinary tubules, but to a lesser degree. This is only the second such report for female squamates, and the differentiation of the region in females is proposed to result from adrenal androgens.

show abstract

“…Kuhnel and Krisch (1974), however, clearly describe and illustrate the apocrine mode of product release in Natrix natrix that we found in Seminatrix pygaea. Sanyal and Prasad (1966), in the Indian house lizard (Hemidactylus flaviviridis), were the first to note that release of secretory granules in the sexual segment is apocrine.…”

Section: Ultrastructurementioning

confidence: 99%

Ultrastructure of the reproductive system of the black swamp snake (seminatrix pygaea). III. Sexual segment of the male kidney

Sever

Stevens

Ryan

et al. 2002

Journal of Morphology

View full text Add to dashboard Cite

In mature male snakes and lizards, a distal portion of the nephron is hypertrophied in relation to its appearance in females and immature males. This sexual segment of the male kidney apparently provides seminal fluid that is mixed with sperm and released into the female cloaca during copulation. In this article, we provide the first study at the ultrastructural level of seasonal variation in the sexual segment of the kidney of a squamate, the natricine snake Seminatrix pygaea. Previous workers have indicated that the sexual segment is secretory only when the testes are spermatogenically active. The sexual segment of the kidney in S. pygaea does not go through an extended period of inactivity but does show a cycle of synthesis and secretion that can be related to the spermatogenic cycle and mating activity. We show that synthesis of secretory product is initiated with the onset of spermatogenic activity in the spring and culminates with completion of spermiation in the fall. Secretion of the product, however, occurs in a premating period in March when the testes are inactive. Secretion during this premating period is probably necessary to provide time for the passage of the products down the ureter in order to mix with sperm during mating later in spring.

show abstract

Sexual segment of the kidney of the Indian house lizard, Hemidactylus flaviviridis Rüppell

Cited by 40 publications

References 8 publications

The reproductive cycle of the male house gecko, Hemidactylus flaviviridis, in relation to plasma steroid concentrations, progesterone receptors, and steroidogenic ultrastructural features, in Oman

The reproductive cycle of the male house gecko, Hemidactylus flaviviridis, in relation to plasma steroid concentrations, progesterone receptors, and steroidogenic ultrastructural features, in Oman

Renal sexual segment of the ground skink, Scincella laterale (Reptilia, Squamata, Scincidae)

Ultrastructure of the reproductive system of the black swamp snake (seminatrix pygaea). III. Sexual segment of the male kidney

Contact Info

Product

Resources

About