Biomaterial Database

Reproductive biology of the male sheath-tailed bat, Taphozous longimanus (Emballonuridae) from India. 1997

U P Singh

Centre of Advanced Study in Zoology, Banaras Hindu University, Varanasi, India.

The seasonal chronological events of the reproductive cycle in the male sheath-tailed bat T. longimanus and changes in structure and function of accessory sex organs were studied at Varanasi (latitude: 25 degrees N, 83 degrees E). The first peak of spermatogenesis was observed in September with the appearance of spermatozoa. The spermatogenic arrest in winter dormancy (December) was followed by a second peak of spermatogenesis in January. This period coincides with ovulation in females. The third peak of spermatogenesis started after regression in late April, and completely regressed tubules were found after May. The cycle of accessory sex gland complex generally paralleled the testicular cycle, reaching maximum hypertrophy from September to January and again in late April. Thereafter, the accessory sex glands involuated. Spermatozoa were present in the cauda epididymidis throughout the year. The reproductive cycle in family Emballonuridae varies with changes in latitude, and this was so even in members of the same species. The presence of spermatozoa in the cauda epididymidis throughout the year is an interesting feature in the reproductive cycle. Temperature and photoperiod do not play a regulatory role in reproduction in T. longimanus.

UI	MeSH Term	Description	Entries
D007194	India	A country in southern Asia, bordering the Arabian Sea and the Bay of Bengal, between Burma and Pakistan. The capitol is New Delhi.	Republic of India
D008297	Male		Males
D009929	Organ Size	The measurement of an organ in volume, mass, or heaviness.	Organ Volume,Organ Weight,Size, Organ,Weight, Organ
D011467	Prostate	A gland in males that surrounds the neck of the URINARY BLADDER and the URETHRA. It secretes a substance that liquefies coagulated semen. It is situated in the pelvic cavity behind the lower part of the PUBIC SYMPHYSIS, above the deep layer of the triangular ligament, and rests upon the RECTUM.	Prostates
D002452	Cell Count	The number of CELLS of a specific kind, usually measured per unit volume or area of sample.	Cell Density,Cell Number,Cell Counts,Cell Densities,Cell Numbers,Count, Cell,Counts, Cell,Densities, Cell,Density, Cell,Number, Cell,Numbers, Cell
D002685	Chiroptera	Order of mammals whose members are adapted for flight. It includes bats, flying foxes, and fruit bats.	Bats,Flying Foxes,Horseshoe Bats,Pteropodidae,Pteropus,Rhinolophus,Rousettus,Bat, Horseshoe,Bats, Horseshoe,Foxes, Flying,Horseshoe Bat
D002980	Climate	The longterm manifestations of WEATHER. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Climates
D004822	Epididymis	The convoluted cordlike structure attached to the posterior of the TESTIS. Epididymis consists of the head (caput), the body (corpus), and the tail (cauda). A network of ducts leaving the testis joins into a common epididymal tubule proper which provides the transport, storage, and maturation of SPERMATOZOA.
D000704	Analysis of Variance	A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.	ANOVA,Analysis, Variance,Variance Analysis,Analyses, Variance,Variance Analyses
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia