Obtaining population-level life history data such as egg and clutch size in reptiles has most often required that individuals be sacrificed. This prevents a reexamination of individuals over intra-annual and inter-annual time scales, limiting insight into the effects of varying environmental conditions on reproductive output. Here, we test the use of a laptop-sized portable ultrasound imaging s...

The spiny lizard Sceloporus grammicus (Squamata: Phrynosomatidae) is a small reptile from central México and the southern United States, occurring in a wide geographic area characterized by extensive variation in topographic and climatic regimes. Genetic variation among lineages from central México is substantial, though the extent to which this variation corresponds with life-history traits re...

background: this study was conducted to evaluate fibroblast co-culture and activin a on in vitro maturation and fertilization of mouse preantral follicles. methods: the ovaries from 12-14-day-old mice were dissected, and 120-150 μm preantral follicles were cultured individually in α-mem as based medium for 12 days. a total number of 456 follicles were cultured in four conditions: (i) base mediu...

Natural FET studies to date determine the window of receptivity for implantation be calculated as either 6 days(d) after a natural LH surge (15IU/L) or 7d hCG trigger shot is administered induce ovulation in presence dominant follicle. All show no difference pregnancy outcome with approach. Our study sets out if our novel approach cycle (NC) FETs affects outcomes single autologous euploid embry...

Ovogenesis and foliculogenesis in the mare differ from other farm animals and therefore, gamete manipulation, in vitro fertilization and embryo transfer have been very difficult. The histologic traits of ovaries from 12 mares, in estrus and diestrus were studied. Number and size of follicules and corpora lutea were recorded. The ovarian stroma was evaluated using the pricosirius technique for c...

The present short communication puts on record a case of ovarian teratoma in a water buffalo along with detailed description of its ovarian biometry, follicular fluid composition and functional assessment. The 2.0×2.3×2.9 cm teratoma was found in the right ovary of 2.4×2.6×4.2 cm size. The teratoma was firmly encapsulated with cartilaginous tissue and its cross section revealed tufts of hair ma...