0000980704

Материал из Антэкология /// Anthecology
Перейти к: навигация, поиск
ATPR 0
AID: 0000980704
Английский
APR 1
APRm
Measurement of day-length as a basis for photoperiodism and annual periodicity in the Carabid beetle Pterostichus nigrita F.
Oecologia, . Т. 30. 4. С. 331348 (18).
Pterostichus nigrita undergoes a gonad dormancy which is overcome by the sequence of short-day/long-day in females and by short-day in males. Experiments with abnormal photoperiods showed that only photoperiods of 24 h and their multiples in whole numbers allowed the processes of gonad maturation, which are normally bound to short-day (i.e., previtellogenesis in the females, bundling of sperms to spermiozeugmata in the males). They were mostly suppressed by photoperiods which represent uneven multiples of 12 h (12, 36, 60). These results permit the conclusion that the short-day measurement is based on an oscillatory (circadian) process. Experiments with “dark breaks” in an extreme long-day (LD 20:4) resulted in two peaks of “short-day” effects. From these findings a model of short-day measurement was derived. It postulates that there are two dark sensitive phases every 24 h during which the beetles require darkness in order for the short-day processes to occur. One of these phases is set by dawn, reaching its peak 15 h thereafter. The other phase is set by dusk and reaches its maximum about 7 h afterwards. Thus, the steps of gonad development bound to short-day are induced if the night is at least about 8–9 h long. The two scotophile phases represent two systems of short-day measurement, which complement each other and strengthen their effects. Light break experiments revealed that the long-day process of ovarian development (vitellogenesis in the females) is induced if light falls into a photosensitive phase during the second half of the day with its maximum about 15 h after “light on.”
ТЕМАТИЧЕСКИЕ СПИСКИ

Error: No contents found at URL https://api.altmetric.com/v1/doi/10.1007/BF00399765.

Вебметрики
Altmetric.png
Показатель Значение Min Max Av
>%
Место из 1352
Рейтинг публикации PAMS 0 0 0.89992 80.77% 1205
Число читателей в Mendeley PAMMR 0 0 35.54 80.99% 1047
Число читателей в CiteuLike PAMCULR 0 0 0.1 96.67% 1068
Число читателей в Connotea PAMCR 0 0 0 99.7% 1273
Число читателей в Altmetric PAMR 0 0 35.64 80.99% 1047
Число цитирований в Wikipedia PAMWPC 0 0 0.1 95.04% 1296
Число цитирований в Twitter PAMTC 0 0 0.36 87.8% 699
Число цитирований в Google Plus PAMGPC 0 0 0 98.89% 611
Число цитирований в блогах PAMBC 0 0 0.06 91.35% 837
Число цитирований в Facebook PAMFBC 0 0 0.06 95.78% 669
Число цитирований в новостях PAMNC 0 0 0 98.22% 1223
Число цитирований на Peer Review Sites PAMPRSC 0 0 0 100% 439
Число цитирований на Reddit PAMRC 0 0 0 99.85% 150
Число цитирований на Research Highliht Platform PAMRHPC 0 0 0 99.19% 1062
Число цитирований на Q&A PAMQAC 0 0 0 99.93% 149


ОПЫЛИТЕЛЬНЫЕ СВЯЗИ
Связи в публикации не описаны.
ИСХОДЯЩИЕ ССЫЛКИ (0)
ВХОДЯЩИЕ ССЫЛКИ (0)