منابع مشابه
Regulation of the Breeding Season in Mammals
The nature of seasonal breeding in both domestic and wild mammals has been known for centuries but only recently have we gained some insight into the mechanisms involved. Environment, encompassing climatic, nutritional, and biotic factors, plays a major role in synchronizing reproductive rhythms. Examples of the effect of environmental factors upon reproductive activity are discussed within the...
متن کاملEvaluation of four chamomile species under late season drought stress
To examine the genetic variation for drought stress in chamomile, eight accessions belonging to four species were evaluated under both field and greenhouse conditions using normal and late season drought stress. In the field experiment drought stress were initiated with irrigation cease at the commencement of flowering time. In greenhouse experiment, irrigation carried out at flower initiation ...
متن کاملFirst record of Prosthogonimus cuneatus ( Prosthogonimidae ) from the Little Grebe , Tachybaptus ruficollis , in Korea
A trematode species belonging to the genus Prosthogonimus (family: Prosthogonimidae) was collected in August, 2004 from the bursa of Fabricius of a single Little Grebe, Tachybaptus ruficollis, caught in Chuncheon, Korea. Five specimens were collected in total and fluke morphology was examined under using a light microscope. The average parasite size was 5.6 × 3.2 mm (length × width; based on 4 ...
متن کاملEffects of food provisioning and habitat management on spatial behaviour of Little Owls during the breeding season
L.B. Jacobsen, M. Chrenková, K. Thorup, Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark. * Corresponding author’s e-mail: [email protected] M. Chrenková, Department of Zoology, Faculty of Science, University of South Bohemia, Branišovská 31, 370 05 eské Bud jovice, Czech Republic P. Sunde, Department of Bioscien...
متن کاملThe “Male Effect” Onestrous Synchronization and Reproductive Characteristics of Female Markhoz Goat during the Breeding Season
One hundred female Markhoz goats (42±5 kg) were used to investigate the ‘male effect’ on estrous synchronization and reproductive characteristics of female goat during the breeding season. This was carried out in three separate experiments. In the first experiment, forty female goats were used in 4 groups with different distance from the male goats (i.e. source of pheromone secretion); A1 (1 me...
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ژورنال
عنوان ژورنال: Japanese Journal of Ornithology
سال: 1934
ISSN: 0040-9480,1881-9702
DOI: 10.3838/jjo1915.8.38_281