Morphological, Histological, Histochemical and Annual Cycle of the Oviduct in Ichthyophis beddomei (Amphibia: Gymnophiona)

Masood-Parveez, U.; Nadkarni, V. B.

doi:10.2307/1564661

Cited by 12 publications

(8 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in the present report, the annual variation in terms of histological details of the oviduct and ovary was not studied because sampling did not occur throughout the full annual cycle. The histological structures of the three oviductal parts in I. supachaii are similar to those in I. beddomei (Masood‐Parveez and Nadkarni ) except that in I. supachaii , the oviductal epithelium is non‐ciliated and a small number of oviductal gland cells are present only in the middle part of the oviduct.…”

Section: Discussionmentioning

confidence: 60%

See 1 more Smart Citation

Microscopic structures of the ovary and female genital ducts of Supachai's caecilian, Ichthyophis supachaii Taylor, 1960 (Amphibia: Gymnophiona)

et al. 2015

View full text Add to dashboard Cite

Pewhom, A., Chumnanpuen, P., Muikham, I., Chatchavalvanich, K. and Srakaew, N. 2015. Microscopic structures of the ovary and female genital ducts of Supachai's caecilian, Ichthyophis supachaii Taylor, 1960 (Amphibia: Gymnophiona). -Acta Zoologica (Stockholm) 00: 000-000.The structures of the female reproductive system (ovary, oviduct and cloaca) of Ichthyophis supachaii were investigated by dissection, histology and light microscopy. Paired, elongated, sac-like ovaries are parallel to the gut and fat bodies. Follicle stages include germinal nests of oogonia and primary oocytes, early and late previtellogenic follicles, early and late vitellogenic follicles and atretic follicles. Germinal nests of oogonia comprise oogonia and prefollicular cells. Nests of primary oocytes contain clusters of synchronously developing primary oocytes enclosed by connective tissue. Primary oocytes are associated with follicular cells. Previtellogenic follicles initially form the vitelline envelope, theca cell layers and patches of ooplasmic glycoproteins. Vitellogenic follicles contain heterogeneously sized spherical yolk granules. Atresia is present in several stages of developing follicles. The oviduct is divided into the anterior, middle and posterior parts. All oviductal parts are lined by non-ciliated epithelium. A small number of mucous cells are present in the middle part. The cloaca of female I. supachaii is divided into the anterior and posterior chambers. The anterior chamber is lined by glandular stratified columnar epithelium, while the posterior chamber has stratified cuboidal epithelium with less mucus production. Our results contribute to useful information on the reproductive biology of caecilians.

show abstract

Section: Discussionmentioning

confidence: 60%

“…The oviduct of I. supachaii is a tripartite structure, consisting of the anterior, middle and posterior parts, similar to other oviparous caecilians (Masood‐Parveez and Nadkarni ; Raquet et al . ; Kuehnel and Kupfer ).…”

Section: Discussionmentioning

confidence: 74%

Microscopic structures of the ovary and female genital ducts of Supachai's caecilian, Ichthyophis supachaii Taylor, 1960 (Amphibia: Gymnophiona)

et al. 2015

View full text Add to dashboard Cite

show abstract

“…After dehydration samples were embedded in paraffin, serially sectioned (8–12 μm) and stained following standard protocols for Heidenhain’s Azan, Alcian Blue (pH 2,5) and classic PAS reaction using nuclear fast red for counterstaining [ 24 ]. We adopt the tripartite oviductal terminology of [ 25 ].…”

Section: Methodsmentioning

confidence: 99%

Sperm storage in caecilian amphibians

Kuehnel

Kupfer

2012

Front Zool

View full text Add to dashboard Cite

BackgroundFemale sperm storage has evolved independently multiple times among vertebrates to control reproduction in response to the environment. In internally fertilising amphibians, female salamanders store sperm in cloacal spermathecae, whereas among anurans sperm storage in oviducts is known only in tailed frogs. Facilitated through extensive field sampling following historical observations we tested for sperm storing structures in the female urogenital tract of fossorial, tropical caecilian amphibians.FindingsIn the oviparous Ichthyophis cf. kohtaoensis, aggregated sperm were present in a distinct region of the posterior oviduct but not in the cloaca in six out of seven vitellogenic females prior to oviposition. Spermatozoa were found most abundantly between the mucosal folds. In relation to the reproductive status decreased amounts of sperm were present in gravid females compared to pre-ovulatory females. Sperm were absent in females past oviposition.ConclusionsOur findings indicate short-term oviductal sperm storage in the oviparous Ichthyophis cf. kohtaoensis. We assume that in female caecilians exhibiting high levels of parental investment sperm storage has evolved in order to optimally coordinate reproductive events and to increase fitness.

show abstract

“…Caecilians are a much-neglected group of animals in terms of research, little has been done with regard to this species. Its structural variation of oviduct in relation to the annual cycle ( Masood-Parveez and Nadkarni, 1991 ), inter-renal gland structure and function ( Masood-Parveez et al, 1992 ), ovarian cycle ( Masood-Parveez and Nadkarni, 1993a ), ovary ( Masood-Parveez and Nadkarni, 1993b ) and pituitary gland ( Masood-Parveez et al, 1994 ) have been studied. Thus, I. beddomei became the animal of choice in this study.…”

Section: Introductionmentioning

confidence: 99%

An insight into the skin glands, dermal scales and secretions of the caecilian amphibian Ichthyophis beddomei

Arun

Sandhya

Akbarsha

et al. 2020

Saudi Journal of Biological Sciences

View full text Add to dashboard Cite

show abstract

Morphological, Histological, Histochemical and Annual Cycle of the Oviduct in Ichthyophis beddomei (Amphibia: Gymnophiona)

Cited by 12 publications

References 8 publications

Microscopic structures of the ovary and female genital ducts of Supachai's caecilian, Ichthyophis supachaii Taylor, 1960 (Amphibia: Gymnophiona)

Microscopic structures of the ovary and female genital ducts of Supachai's caecilian, Ichthyophis supachaii Taylor, 1960 (Amphibia: Gymnophiona)

Sperm storage in caecilian amphibians

An insight into the skin glands, dermal scales and secretions of the caecilian amphibian Ichthyophis beddomei

Contact Info

Product

Resources

About