نتایج جستجو برای: larval quality

تعداد نتایج: 776887  

Journal: :شیلات 0
غلامرضا رفیعی استاد گروه مهندسی شیلات دانشکدة منابع طبیعی دانشگاه تهران، کرج، ایران کامران رضایی توابع فارغ التحصیل دورة دکتری رشتة مهندسی شیلات دانشکدة منابع طبیعی دانشگاه تهران، کرج، ایران مایک فرینسکو کارشناس ارشد آبزی پروری بخش توسعة علوم شیلات دانشکدة کشاورزی دانشگاه ایالتی کارولینای شمالی، امریکا هری دانیلز استاد بخش آبزی پروری آبزیان گرمابی دانشکدة زیست شناسی دانشگاه ایالتی کارولینای شمالی، امریکا محمد مهدی شعیری دانشگاه جامع علمی کاربردی سرپل زهاب، ایران

the main objective of the present study was investigation on influences of different brackish water sources on freshwater prawn larval quality and developmental indices. for this study, along a larval period, four brackish water treatments with 12 ppt salinity including diluted marine water, brackish water from marine crystalline salt, brackish water with compounds of new formula and brackish w...

Journal: :Ecology 2009
Jeffrey S Shima Stephen E Swearer

Variation in the phenotype or "quality" of dispersing individuals can shape colonization success and thus local dynamics and patterns of connectivity in a metapopulation. In marine reef systems, larval dispersal typically connects fragmented populations, and larval quality may be shaped by developmental history at the natal reef (e.g., parental effects) and/or by conditions in the pelagic envir...

  Background: Maggot therapy has recently attracted considerable attention as an emerging debridement technique for wound healing. This study aimed to review the safety, effectiveness and economic evaluations of Maggot Debridement Therapy for wound healing.   Methods: To retrieve the relevant evidences, the Cochrane Library (until September 2014) was searched by appropriate ke...

2005
Craig W. OSENBERG Jeffrey S. SHIMA

As coral reefs change in their composition, the dynamics of organisms that depend on them will likely also be affected. Traditionally, marine ecologists have recognized that settlement of fishes (and invertebrates) is tremendously variable in space and time, and changes in coral communities might therefore be expected to operate through effects on settlement. However, recent work demonstrates t...

Journal: :شیلات 0
کامران رضایی توابع1 1. استادیار گروه مهندسی شیلات دانشکدة منابع طبیعی دانشگاه تهران غلامرضا رفیعی2 2. استاد گروه مهندسی شیلات دانشکدة منابع طبیعی دانشگاه تهران

macrobrachium rosenbergii lifecycle is unique so that the adults thrive in freshwater and larval development requires brackish water environments near to estuaries as close as possible to larval body isosmotic for minimum na/k-atpase activity and maximum atp storage. osmoregulation system at early larval stages is not formed and larval osmoregulation is mainly attributed to na/k-atpase activity...

Journal: :medical journal of islamic republic of iran 0
jalal arabloo health management and economics research center, iran university of medical sciences & department of health management and economics, school of public health, tehran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) serajaddin grey deprtment of health management and economics, school of public health, tehran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) mohammadreza mobinizadeh young researchers and elites club, science and research branch, islamic azad university, tehran, iran.سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) alireza olyaeemanesh national institute for health research, tehran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) pejman hamouzadeh deprtment of health management and economics, school of public health, tehran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) kiumars khamisabadi national institute for health research, tehran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences)

background: maggot therapy has recently attracted considerable attention as an emerging debridement technique for wound healing. this study aimed to review the safety, effectiveness and economic evaluations of maggot debridement therapy for wound healing.   methods: to retrieve the relevant evidences, the cochrane library (until september 2014) was searched by appropriate keywords, using free t...

2015
Amy E. George Duane C. Chapman

With recent findings of grass carp Ctenopharyngodon idella in tributaries of the Great Lakes, information on developmental rate and larval behavior is critical to efforts to assess the potential for establishment within the tributaries of that region. In laboratory experiments, grass carp were spawned and eggs and larvae reared at two temperature treatments, one "cold" and one "warm", and track...

Journal: :Environmental entomology 2009
Laura Burkle Rebecca Irwin

The bottom-up effects of plant food quality and quantity can affect the growth, survival, and reproduction of herbivores. The larvae of solitary bee pollinators, consumers of nectar and pollen, are also herbivores. Although pollen quantity and quality are known to be important for larval growth, little is known about how nectar quality limits solitary bee performance. By adding different levels...

Journal: :اقتصاد و توسعه کشاورزی 0
بیژن نیا بیژن نیا صیداوی صیداوی غنی پور غنی پور

abstract more than %90 of natural silk in world is produced by means of mulberry silkworm (bombyx mori l.). therefore, it is important that we recognize and collect mulberry varieties which have high quantity and quality leaf performance. for this purpose, an experiment was conducted with five mulberry varieties (kenmochi, kairyonase, ichinose, shinichinose and local varieties) during two seaso...

Journal: :Biology letters 2014
Alexandra Cieslak Javier Fresneda Ignacio Ribera

In insects, whilst variations in life cycles are common, the basic patterns typical for particular groups remain generally conserved. One of the more extreme modifications is found in some subterranean beetles of the tribe Leptodirini, in which the number of larval instars is reduced from the ancestral three to two and ultimately one, which is not active and does not feed. We analysed all avail...

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