NDLI: Spermatogenic cycle of the African sideneck turtle Pelusios castaneus (Schweigger, 1812) (Reptilia: Testudines)

Content Provider	Taylor & Francis Online
Author	Oke, B. O. Oyeyemi, M. O. Olukole, S. G.
Abstract	We describe the spermatogenic cycle of the African sideneck turtle (Pelusios castaneus) (Reptilia: Testudines). We further classify the pattern of spermatogenesis in the species, generating new comparative baseline data on the spermatogenic cycle of freshwater turtles in the tropics. Seventy-two adult male P. castaneus collected at different times from various river drainages in Ibadan, Nigeria, were used for the study. The average body weight of the turtles was 723 ± 23.36 g while the curved carapace and plastron lengths of the turtles were 24.4 ± 1.47 cm and 15.7 ± 1.23 cm, respectively. Histology of the testis and epididymis, gonadosomatic index, epididymal mass index, seminiferous tubule diameter and epididymal ductal diameter all suggest the postnuptial pattern of spermatogenesis. Sperm production in P. castaneus starts in May and peaks in September. It is thereafter released into the epididymis, and the degree of sperm packing of the epididymis increases from October, reaching its peak in January. Spermatozoa were found in the epididymis of the turtles all through the year. The study shows that the postnuptial pattern of turtle spermatogenesis is not unique to turtles in the temperate regions of the world and that the spermatogenic cycle of P. castaneus is similar to those of other chelonians with minor variations. This report, the first of its kind for a pelomedusid turtle, therefore serves as baseline information for the family in comparative studies of the spermatogenic cycle of turtles.
Starting Page	25
Ending Page	31
Page Count	7
File Format	PDF HTM / HTML
ISSN	11250003 17485851
DOI	10.1080/11250003.2013.875602
Journal	The European Zoological Journal
Volume Number	81
Issue Number	1
Language	English
Publisher	Taylor & Francis
Publisher Date	2014-04-17
Access Restriction	Open
Subject Keyword	Spermatogenesis Testis Epididymis Postnuptial reproduction
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Biometrical and histometrical observations on the testis and epididymis of the African sideneck turtle (Pelusios castaneus)

Cranial morphometry of the African Sideneck Turtle (Pelusios castaneus)

The vertebral formula of the African sideneck turtle (Pelusios castaneus).

Anatomy of the male reproductive organs of the African sideneck turtle (Pelusios castaneus).

Morphological Analysis of the Carapace of the African Sideneck Turtle ( Pelusios castaneus )

Gonadal and extragonadal sperm reserves in the African sideneck Turtle (Pelusios castaneus)

Morphometric studies of the craniofacial region of the African sideneck turtle (Pelusios castaneus)

ANATOMY OF THE MALE REPRODUCTIVE ORGANS OF THE AFRICAN SIDENECK TURTLE (Pelusios castaneus).

Spermiogenesis in the African sideneck turtle (Pelusios castaneus): Acrosomal vesicle formation and nuclear morphogenesis

Spermatogenic cycle of the African sideneck turtle Pelusios castaneus (Schweigger, 1812) (Reptilia: Testudines)

Similar Documents

Biometrical and histometrical observations on the testis and epididymis of the African sideneck turtle (Pelusios castaneus)

Cranial morphometry of the African Sideneck Turtle (Pelusios castaneus)

The vertebral formula of the African sideneck turtle (Pelusios castaneus).

Anatomy of the male reproductive organs of the African sideneck turtle (Pelusios castaneus).

Morphological Analysis of the Carapace of the African Sideneck Turtle ( Pelusios castaneus )

Gonadal and extragonadal sperm reserves in the African sideneck Turtle (Pelusios castaneus)

Morphometric studies of the craniofacial region of the African sideneck turtle (Pelusios castaneus)

ANATOMY OF THE MALE REPRODUCTIVE ORGANS OF THE AFRICAN SIDENECK TURTLE (Pelusios castaneus).

Spermiogenesis in the African sideneck turtle (Pelusios castaneus): Acrosomal vesicle formation and nuclear morphogenesis

Spermatogenic cycle of the African sideneck turtle Pelusios castaneus (Schweigger, 1812) (Reptilia: Testudines)