搜索结果: 1-15 共查到“理学 juvenile”相关记录24条 . 查询时间(0.157 秒)
Perfect timing:Making the 'switch' from juvenile to adult（图）
Perfect timing Making switch juvenile adult
2019/10/23
Very little is known about how the onset of puberty is controlled in humans, but an NSF-funded discovery of a new gene in the roundworm C. elegans could be the "missing link" that determines the juven...
Travel Distances of Juvenile Fish Key to Better Conservation
Travel Distances Juvenile Fish Key Conservation
2017/7/20
Marine reserves—sections of the ocean where fishing is prohibited—promote coral reef sustainability by preventing overfishing and increasing fish abundance and diversity. But to be effective, they nee...
Follicle cell calmodulin: transcript accumulation in vitellogenic follicles of {\it Blattella germanica\/} is regulated by juvenile hormone
Calmodulin cells calmodulin oocytes vitellogenesis early embryo
2014/12/11
Calmodulin (CaM) is a major intracellular calcium receptor. There is abundant calmodulin (CaM) in the oocytes and eggs of B. germanica during vitellogenesis and early embryogenesis. The accumulation o...
Nutrient availability affects the response of juvenile corals and the endosymbionts to ocean acidification
ocean acidification Juvenile coral
2014/10/16
The interactive effects of nutrient availability and ocean acidification on coral calcification were investigated
using post-settlement juvenile corals of Acropora digitifera cultured in nutrient-suf...
Evaluation of the Efficacy of Fermented By-product of Mushroom, Pleurotus ostreatus, as a Fish Meal Replacer in Juvenile Amur Catfish, Silurus asotus: Effects on Growth, Serological Characteristics and Immune Responses
Fermented Mushroom Fish Meal Replacer Juvenile Amur Catfish Growth Immune Response
2016/5/17
The present experiment was conducted to evaluate the efficacy of dietary fermented by-product of mushroom, Pleurotus ostreatus, (FBPM) as a fish meal (FM) replacer in juvenile Amur catfish, Silurus as...
Effect of High Dietary Carbohydrate on the Growth Performance and Physiological Responses of Juvenile Wuchang Bream, Megalobrama amblycephala
High Dietary Carbohydrate Growth Performance
2016/5/12
Fish were fed to apparent satiation three times daily in an aquarium with automatic temperature control and circulated water. Growth performance, plasma biochemical parameters, hepatic morphology and ...
Effects of Dietary Protein and Lipid Levels on Growth and Body Composition of Juvenile Far Eastern Catfish Silurus asotus
Dietary Protein and Lipid Far Eastern Catfish Growth Body Composition
2016/5/9
A 3×2 factorial experiment was conducted to determine the effects of dietary protein and lipid levels on the growth and body composition of juvenile far eastern catfish. Six diets were formulated to c...
Sr, Nd and O isotopic characters of quartz syenite in the Weiya magmatic complex from eastern Tianshan in NW China: Melting of the thickened juvenile lower crust
quartz syenite intra-continental subduction Weiya Central Tianshan Northwestern China
2017/8/9
New Sr-Nd-O isotopic data are reported for the early Triassic (early Indosinian) Weiya quartz syenite from eastern Central Tianshan, northwestern China, with the aim of documenting its possible source...
The effect of lordosis severity on juvenile sea bass (Dicentrarchus labrax L., 1758) swimming performance
Lordosis severity swimming performance Ucrit sea bass
2010/3/25
The relationship between the lordosis severity and swimming performance in sea bass juveniles was investigated. In total, 149 experimental animals 110-130 days old that ranged from 1.44 to 3.44 g (mea...
Variability in stream discharge and temperature：a preliminary assessment of the implications for juvenile and spawning Atlantic salmon
Critical Displacement Velocity Atlantic salmon
2009/5/18
This study focuses on understanding the temporal variability in hydrological and thermal conditions in a small mountain stream and its potential implication for two life stages of Atlantic salmon (Sal...
Death by dissolution: Sediment saturation state as a mortality factor for juvenile bivalves
Sediment saturation state juvenile bivalves
2014/4/18
We show that death by dissolution is an important size-dependent mortality factor for juvenile bivalves.
Utilizing a new experimental design, we were able to replicate saturation states in sediments ...
Incorporating episodicity into estimates of Critical Loads for juvenile salmonids in Scottish streams
Critical Load Critical acid neutralising capacity brown trout episodes streams
2009/3/5
Critical Load (CL) methodology is currently used throughout Europe to assess the risks of ecological damage due to sulphur and nitrogen emissions. Critical acid neutralising capacity (ANCCRIT) is used...
A Preliminary Study on Effects of Different Dietary Selenium (Se) Levels on Growth Performance and Toxicity in Juvenile Black Seabream, Acathopagrus schlegeli (Bleeker)
Selenium Requirement Growth Performance Toxicity Histopatholgy Black Seabream
2016/4/28
This preliminary feeding trial was conducted to study the effects of different dietary selenium (Se) levels on growth performance and toxicity in juvenile black seabream, Acanthopagrus schlegeli (Blee...
The influence of climate variation on eastern oyster (Crassostrea virginica) juvenile abundance in Chesapeake Bay
climate variation eastern oyster juvenile abundance Chesapeake Bay
2014/4/22
There has been a significant downward trend in the annual abundance (= spatfall) of 0-age eastern oysters (Crassostrea virginica) measured in the autumn since 1940 in the Maryland portion of Chesapeak...
Consequences of fish predation, migration, and juvenile ontogeny on zooplankton spring dynamics
Consequences of fish predation migration juvenile ontogeny zooplankton spring dynamics
2014/4/23
In order to disentangle if and when resource supply and adult and young-of-the-year (0+) fish predation affect zooplankton dynamics during spring, we monitored zooplankton during three consecutive yea...