منابع مشابه
Sex determination and polyploid gigantism in the dwarf surfclam (Mulinia lateralis Say).
Mulinia lateralis, the dwarf surfclam, is a suitable model for bivalve genetics because it is hardy and has a short generation time. In this study, gynogenetic and triploid M. lateralis were successfully induced. For gynogenesis, eggs were fertilized with sperm irradiated with ultraviolet light and subsequently treated with cytochalasin B to block the release of the second polar body (PB2). Tri...
متن کامل“the effect of risk aversion on the demand for life insurance: the case of iranian life insurance market”
abstract: about 60% of total premium of insurance industry is pertained?to life policies in the world; while the life insurance total premium in iran is less than 6% of total premium in insurance industry in 2008 (sigma, no 3/2009). among the reasons that discourage the life insurance industry is the problem of adverse selection. adverse selection theory describes a situation where the inf...
15 صفحه اولHistory of Discovery How We Learned to Say NO
What seest thou else In the dark backward and abysm of time —William Shakespeare First, there was Robert Furchgott.1 He simply and brilliantly demonstrated that endothelial cells play a pivotal role in relaxations evoked by acetylcholine in isolated arteries, and do so by activating muscarinic receptors of these cells. Actually, the quest for the understanding of the mechanism(s) underlying the...
متن کاملNatural history , life history , and
We report on basic natural history, life history, and diet of Priapella chamulae (Poeciliidae) from Arroyo Tres, a small creek in Tabasco, southern México. The tertiary (adult) sex ratio was heavily female-skewed, female P. chamulae produced medium-sized offspring (~2.3 mg), one clutch at a time (i.e., showed no superfetation), and relied predominantly on yolk for embryo provisioning (Matrotrop...
متن کاملlife history of the colorado potato beetle, leptinotarsa decemlineata (say) (coleoptera: chrysomelidae), on four potato varieties in iran
abstract: colorado potato beetle (cpb), leptinotarsa decemlineata (say),is the most important insect pest of potato in iran. if local potato varieties vary in susceptibility to the pest, host plant resistance may provide management benefits to potato growers. a life table study was carried out to determine the relative suitability of four common potato varieties (agria, marfona, savalan and sat...
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ژورنال
عنوان ژورنال: Annals of the Entomological Society of America
سال: 1909
ISSN: 1938-2901,0013-8746
DOI: 10.1093/aesa/2.4.272