نتایج جستجو برای: asian and wild species

تعداد نتایج: 16923314  

2011
Vincent Nijman Chris R. Shepherd

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...

Journal: :iranian journal of science and technology (sciences) 2015
a. vazirzadeh

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...

2017
Abdul Aziz Khan Irfan Zia Qureshi

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...

2014
Gopala Krishnan S. Daniel L. E. Waters Robert J. Henry

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...

B. Jalali, M. Barzegar Sh. Shamsi

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...

Journal: :علوم گیاهان زراعی ایران 0
عظیمه نجفی پور دانشجوی کارشناسی ارشد اصلاح نباتات، دانشگاه صنعتی اصفهان محمد مهدی مجیدی استادیار، دانشگاه صنعتی اصفهان، دانشکده کشاورزی، گروه زراعت و اصلاح نباتات، تخصص: ژنتیک بیومتری، تنوع ژنتیکی، نشانگرهای مولکولی

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...

F. Chakmedouz Qasemi, F. Fallahbagheri, M. Pourkazemi, s. Dorafshan, Y. Keivany,

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...

Journal: :حفاظت گیاهان 0
سعید اصلانی سعید سعیدی پور

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...

Journal: :جنگل و فرآورده های چوب 0
علی ستاریان دانشیار گروه جنگل داری، دانشگاه گنبد کاووس، گنبد کاووس، ایران قاسم علی پاراد دانشجوی دکتری جنگل داری، دانشکدة منابع طبیعی، دانشگاه تربیت مدرس، نور، ایران مهرداد زرافشار دکتری جنگل داری، دانشکدة منابع طبیعی، دانشگاه تربیت مدرس، نور، ایران مسلم اکبری نیا دانشیار گروه جنگل داری، دانشکدة منابع طبیعی، دانشگاه تربیت مدرس، نور، ایران سید فرید غفاری دهکردی کارشناس ‏ارشد جنگل داری، دانشکدة منابع طبیعی، دانشگاه تربیت مدرس، نور، ایران

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...

Journal: :Frontiers in Marine Science 2022

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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