نتایج جستجو برای: larval period long

تعداد نتایج: 1218993  

بیژن حاتمی, , حسین سیدالاسلامی, , عبدالمجید رضایی, , مرجان خلیلی ماهانی, , بهرام حیدری, ,

Elm leaf beetle were reared under controlled conditions (25± 2 oC, 70± 5%R.H. and 16L: 8D) to determine relationship between biological traits and the number of eggs per female on different hosts and to evaluate correlation between traits. U. carpinifolia, U .c. var. umbraculifera, U. glabra var. pendula and Celtis caucasica were examined as hosts. The biological traits consisted of 1st, 2nd an...

2012
Alexander T. Lowe Robin M. Ross Langdon B. Quetin Maria Vernet Christian H. Fritsen

The first winter in the life cycle of Antarctic krill Euphausia superba is a critical period in which larval survival and recruitment to the adult population are highly sensitive to environmental conditions, yet little is known about larval physiological dynamics during this period. An individual-based model was developed to investigate patterns of larval krill growth and condition factor in re...

Journal: :کشاورزی (منتشر نمی شود) 0
مسعود اربابی بخش تحقیقات جانور شناسی، موسسه تحقیقات گیاهپزشکی کشور جناردان سینگ دپارتمان حشره شناسی و جانور شناسی کشاورزی، انستیتو علوم کشاورزی، دانشگاه هندوی بنارس، هندوستان

the feeding habit and developmental stages of cunaxa setriostris (hermann) on most injurious mite, tetranychus ludeni zacher was investigated in varanasi region, uttar pradesh, india. the female of c. setirostris as a dominant species of cunaxid mite completed its life cycle on t. ludeni within 27.5 ± 13.55 days having one larval followed by three nymphal stages. whereas, the male sex of the sa...

Journal: :The Journal of Agriculture of the University of Puerto Rico 1969

Journal: :Archives of environmental contamination and toxicology 2001
C L Rowe W A Hopkins V R Coffman

We conducted a transplant study in which embryonic southern toads (Bufo terrestris) were held in a site polluted with coal ash (site AB; containing As, Cd, Cr, Cu, Se, and other elements) and a reference site (site R) through hatching and early larval development. To examine the remainder of the larval period, surviving larvae in AB were then transplanted to R and back-transplanted to AB, where...

ژورنال: علوم آب و خاک 2004
بیژن حاتمی, , ابراهیم قاری‌زاده گلسفیدی, , حسین سیدالاسلامی, ,

The coccinellid Cryptolaemus montrouzieri Muls. is an oligophagous predator that is used to control mealy bugs in the orchards and greenhouses. Citrus soft scale, Pulvinaria aurantii, as an active pest on citrus plants in North of Iran is also attacked by this predator. This research was conducted to study biological characteristics of C. montrouzieri on citrus soft scale and mealy bug, Planoco...

بیژن حاتمی, , ابراهیم قاری‌زاده گلسفیدی, , حسین سیدالاسلامی, ,

The coccinellid Cryptolaemus montrouzieri Muls. is an oligophagous predator that is used to control mealy bugs in the orchards and greenhouses. Citrus soft scale, Pulvinaria aurantii, as an active pest on citrus plants in North of Iran is also attacked by this predator. This research was conducted to study biological characteristics of C. montrouzieri on citrus soft scale and mealy bug, Planoco...

Journal: :Evolution & development 2005
Daniel R Buchholz Tyrone B Hayes

Hormonal control of post-embryonic morphogenesis is well established, but it is not clear how differences in developmental endocrinology between species may underlie animal diversity. We studied this issue by comparing metamorphic thyroid hormone (TH) physiology and gonad development across spadefoot toad species divergent in metamorphic rate. Tissue TH content, in vitro tail tip sensitivity to...

2006
José Azaña Mykola Kulishov

A simple and practical all-fiber approach for realizing ultrafast optical differentiators is proposed and numerically tested. In particular, it is demonstrated that first-order and second-order temporal differentiation of an arbitrary optical waveform can be realized by simply propagating the waveform through a suitable uniform longperiod grating photoinscribed in the core of an optical fiber (...

2009
Genda Chen Hai Xiao Ying Huang Zhi Zhou Yinan Zhang

Critical buildings such as hospitals and police stations must remain functional immediately following a major earthquake event. Due to earthquake effects, they often experience large strains, leading to progressive collapses. Therefore, monitoring and assessing the large strain condition of critical buildings is of paramount importance to post-earthquake responses and evacuations in earthquake-...

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