نتایج جستجو برای: asian and wild species
تعداد نتایج: 16923314 فیلتر نتایج به سال:
BACKGROUND International wildlife trade is one of the leading threats to biodiversity conservation. The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) is the most important initiative to monitor and regulate the international trade of wildlife but its credibility is dependent on the quality of the trade data. We report on the performance of CITES reporti...
the populations of wild carp (cyprinus carpio carpio), as a commercially valuable species in the southeast iranian waters of the caspian sea, have been severely declined during last three decades, but there is no comprehensive research available on the biology of this species in this area. the age, growth and reproductive aspects of samples collected during 2009-2010 fishing season were measure...
Defining the vocal repertoire provides a basis for understanding the role of acoustic signals in sexual and social interactions of an animal. The Asian koel (Eudynamys scolopacea) is a migratory bird which spends its summer breeding season in the plains of Pakistan. The bird is typically wary and secretive but produces loud and distinct calls, making it easily detected when unseen. Like the oth...
BACKGROUND Rice is a major source of human food with a predominantly Asian production base. Domestication involved selection of traits that are desirable for agriculture and to human consumers. Wild relatives of crop plants are a source of useful variation which is of immense value for crop improvement. Australian wild rices have been isolated from the impacts of domestication in Asia and repre...
Leuciscus persidis as Iranian endemic fish in Kaftar lake and its headwaters (Mesopotamian subregion, Kor-Neiriz basin and Shadkam river) has been infected with a species of Dactylogyrus sphyrna. Comparison of collected parasites with Euro-Asian subregion showed that the similarity of them is more than their differences, although a little difference between them was observed. In this paper also...
in order to investigate genetic variation of traits related to seed yield, 41 genotypes from 14 wild and cultivated species were evaluated according to a randomized complete block design with three replications in isfahan university of technology research farm. the genotypes were significantly different for all of the studied traits indicating existence of considerable genetic variation in this...
The Caspian Sea and its basin (e.g. Anzali wetland) is one of the natural habitats of wild common carp Cyprinus carpio. In this study the genetic structure of this species. In the south-west of Caspian Sea (the Anzali wetland) was investigated using PCR-RFLP analysis of D-loop region. Two hundred of mature fish were collected from 5 stations (40 individuals from each station) including Siahkesh...
introduction: increasing costs of herbicide inputs in intensive crop production systems and the incidence of herbicide resistance in weeds have renewed interest in exploiting crop competitiveness to reduced herbicide use. two factors contribute to crop competitiveness against weeds: ability to withstand competition (awc), or the ability to maintain high yields in the presence of weeds, and weed...
wild plant germplasm possesses useful adaptive strategies. wild plant species, for example, are resistant to biotic and abiotic stress and can be used for reforestation, agriculture, and horticulture. we surveyed the potential of wild pear to resist flooding. we looked at survival, growth, biomass, and several physiological variables. the rootstocks of wild pear are candidates for planting in o...
Overfishing has significantly decreased global shark populations, with some species experiencing reductions of approximately 70% over the last 50 years. Singapore is a major fin transhipment hub that helps to satisfy demand for fins, which are considered status symbols and reputed have medicinal value in Asian culture. Despite recognised urgent need better protect success such efforts been limi...
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