...Many persons have assumed that gestation periods in snakes are the intervals between mating and parturition, and that mating and ovulation occur at approximately the same time...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...However, retention of spermatozoa and delayed fertilization indicate that copulation is not a stimulus for ovulation...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...:237), in which the ovarian follicles of post-partum females begin to enlarge in late summer and autumn, with ovulation occurring the following spring...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Mating is probably most concentrated in early spring at about the time when females ovulate, but copulation is not a stimulus for ovulation...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Disadvantages, if any, of completingspermatogenesis well in advance of ovulation seem to beat least partly counteracted by two annual mating periods or bymating throughout the season of activity...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...The ovarian cycle begins in July or August, after ovulation hasoccurred...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...In all the specimens examined, it was evident that ovulation hadoccurred or would occur in two successive seasons...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...After ovulation, the collapsed follicle assumes a cuplike shapeand becomes a glandular corpus luteum ()...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Corpora albicantia remain on the ovary until Aprilof the year following ovulation but disappear in May and are neverpresent after the new set of eggs is ovulated...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Atresiaof corpora lutea began when eggs were laid, was completed by mid-August,and was coincident with atresia of large follicles that didnot undergo ovulation...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...The ovariancycle begins in midsummer, soon after ovulation, and continuesup to the time of the next ovulation...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Follicular growth is rapidin the period from spring emergence to ovulation...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Large folliclesremaining after ovulation represent, in many instances, eggs thatwill be laid later in the same season...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Follicular atresia is nevergreat enough to account for the destruction of all large folliclesremaining after ovulation...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
ランダム例文:
Cortez trump coagulation
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