However, a broad variation in the amount of resource allocation to reproductive structures was found at the fruiting stage in female individuals, which was attributed to differences in the setting rate of mature fruits. 展开 关键词: Arisaema Sexual dimorphism Size‐sex relationship ...
string的实现在各库中可能有所不同，但是在同一库中相同一点是，无论你的string里放多长的字符串，它的sizeof()都是固定的，字符串所占的空间是从堆中动态分配的，与sizeof()无关。sizeof得不到string的长度，要得到string的长度，例如：string str("123");int size = str.size(); // size ...
We estimated selection on adult body size for two generations in two populations of Aquarius remigis, as part of a long-term study of the adaptive significance of sexual size dimorphism (SSD). Net adult fitness was estimated from the following components: prereproductive survival, daily reproductive...
String Representation By default aByteSizeobject uses the decimal value for string representation. All string operations are localized to use the number decimal separator of the culture set inThread.CurrentThread.CurrentCulture. ToString ByteSizecomes with a handyToStringmethod that uses the largest metri...
A significant relationship between sex ratio and litter size at birth was observed in the young of caged singly from 8 weeks of age and during their first pregnancy; a male was present only at or around . Small litters (1-2 young) had significantly more males than did large litters (4-...
Body length explained 76% of the variation in zygote production of females. However, male body length was only weakly correlated with mating success in two of three seasons, and with zygote production in one of three seasons. Male arm length was predicted to correlate with male mating success ...
Data from the First and Second Malaysian Family Life Surveys in 1976 and 1988, respectively, are analyzed to examine long-term trends in breastfeeding in P... Da Vanzo, Julie,J Sine,C Peterson,... - 《Soc Biol》 被引量: 24发表: 1994年 Proximate Determinants of Fertility in Peninsular ...
Background: Men who have sex with men (MSM) are one of the groups most at risk for HIV infection in Japan. However, size estimates of MSM populations have not been conducted with sufficient frequency and rigor because of the difficulty, high cost and stigma associated with reaching such popu...
INSIZE/英示数显孔径千分尺3127-63C三爪内径千分尺 测量范围50-63mm,标配内附有φ62mm环规一件,用于校准千分尺,每次使用前都需一次校验,配有千分尺延长杆一个,用具测量特殊工件,三点内径千分尺用于测量通孔盲孔内径尺寸,根据测量结果方便判断产品是否合格。 3127系列三爪内径千分尺规格参数: 型号 测量范围 类型 精度 ...
Sexual maturity of female green mud crab (Scylla paramamosain) under different grow out protocol was assessed by evaluating the composition of different gonad development stages in respect to age and size. Female crabs attained sexual maturity following five gonad development stages of proliferation, pre...