Morphology and histology of the Anatolian bobcat (Lynx lynx) hard palate     

Hasan Hüseyin Ar&#x;  Sema Uslu 《Anatomia, histologia, embryologia》2019,48(4):290-295

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Leaf structure and function of sweet cherry tree (Prunus avium L.) cultivars with open and dense canopies     

Berta Gonalves  Carlos M. Correia  Ana Paula Silva  Eunice A. Bacelar  Alberto Santos  Jos M. Moutinho-Pereira 《Scientia Horticulturae》2008,116(4):381-387

Variations in morpho-anatomy, chemical composition, gas exchange and stem water potential (Ψ_stem) were studied in leaves of Prunus avium L. cultivars with different growth habit: Burlat and Summit (upright, dense canopies), and Van (spreading, open canopy). Light transmittance was highest in Van canopies. Therefore, Van allowed an easier penetration of the visible radiation through the canopy, which improves photosynthetic rates, especially at harvest. Conversely, no differences in Ψ_stem were found among cultivars. Van showed the highest leaf mass per unit area and variations in this parameter were mainly associated with alterations in leaf thickness than in leaf density. Leaves of Summit and Van were thicker than those of Burlat, mainly due to increased palisade and spongy parenchyma thickness. However, Burlat leaves had the highest palisade/spongy ratio. Total chlorophyll concentration per area and the chlorophyll a/b ratio were always higher in Van leaves than in the other two cultivars. In contrast, Van leaves had the lowest concentrations of soluble carbohydrates and starch. In dense canopies of Summit and Burlat, light reduction caused a notable increase in the relative concentration of total phenols. The above results provide useful information about the biological behaviour of sweet cherry cultivars with open and dense canopies in order to help the agronomical decisions regarding the local environmental conditions and the consumers’ preference. In particular, it is important to manipulate factors such as orchard exposure, row orientation, plant spacing, training system and pruning, which are able to reduce shading in the canopy.  相似文献   

Ultrasonographic anatomy of reproductive female leopard geckos (Eublepharis macularius)          下载免费PDF全文

Claire Vergneau‐Grosset  Isabelle Masseau 《Veterinary radiology & ultrasound》2018,59(3):333-344

Captive leopard geckos (Eublepharis macularius) often present to the exotic clinic for gastrointestinal impactions, follicular stasis, or dystocia. To our knowledge, normal ultrasonographic anatomy of these lizards has not been described. The objectives of this prospective, anatomic, analytical study were to develop ultrasound techniques for this species and to describe the normal sonographic anatomy of the head, coelomic cavity, and tail. Eleven, healthy, female leopard geckos were included. A linear array 13–18 MHz transducer was used. Geckos were sedated and restrained in dorsal recumbency for coelomic structure examination and in ventral recumbency for head and tail examinations. Sagittal and transverse images were acquired and authors recorded qualitative and quantitative ultrasonographic characteristics of anatomic structures. The ventral surface of the lungs, liver, gallbladder, caudal vena cava, portal vein, ventral abdominal vein, aorta, ovarian follicles, fat bodies, tail, and brain were visualized in 10 of 11 individuals. In one individual, molt precluded ultrasonographic examination. The heart, kidneys, urinary bladder, spleen, and pancreas were not visualized. The digestive tract was observed in 10 individuals but was too small to be measured. Findings from the current study could be used as a reference for future studies of leopard geckos.  相似文献   

半干旱黄土区沙棘的水分生理生态与形态解剖学特性研究   总被引：6，自引：0，他引：6  

李代琼 《水土保持研究》1998,5(1):97-102,125

1986～1997年在半干旱黄土区的陕西吴旗、安塞县和宁夏固原县,对沙棘进行了蒸腾、净初级生产量、土壤水分等生理生态和形态解剖学特性研究。试验结果表明:沙棘每生产lg地上干物质,总耗水量为711～829g,其中蒸腾耗水量为551～654g,该地区荒山植被生产lg地上干物质蒸腾耗水量为343～709g,总耗水量却达2540～4501g。水分利用效率为1.21～1.53g/（m²·mm）,是荒山植被的3.1～6.4倍。沙棘水分利用效率较高,水分生产潜力较大。观察沙棘叶、根具有耐大气干旱、耐高温和水湿的形态解剖学特性,说明沙棘有较强的生态适应性。因而在半干旱黄土区的荒山、荒沟,营造沙棘林,能有效利用水土资源,这是快速治理荒山,提高土地生产力的有效途径之一。  相似文献   

MAGNETIC RESONANCE IMAGING OF THE NORMAL FELINE ABDOMEN: AN ANATOMIC REFERENCE     

Valerie F.  Samii  DVM  David S.  Biller  DVM  Philip D.  Koblik  DVM  MS 《Veterinary radiology & ultrasound》1999,40(5):486-490

Magnetic resonance images of two adult domestic short-haired cats were obtained with a whole body scanner. Images of the abdomen were compared with cross-sectional anatomy cadaver specimens from the same two cats. Anatomic structures were first identified on the cadaver specimens with the aid of anatomy texts and references and were then identified and labeled on the magnetic resonance images. Results from this project provide an atlas of normal cross-sectional MRI anatomy of the feline abdomen.  相似文献   

普通刺猬的解剖学研究(二) 骨骼     

邓雯  庞有志  宗留香  肖青苗  崔保健 《河南科技大学学报(农学版)》1999,(3)

对28只（♀16,♂12）成年普通利猬（Erinaceuseuropaeus）的骨骼标本进行了解剖学研究,结果表明,普通刺猬全身骨骼有316～317枚,其中头骨48枚,脊椎骨43～44杖,椎式为C7T15L6S3Cy12～13,肋骨15对,胸骨5枚,前肢骨每侧47杖,后肢骨每侧48枚。普通刺猬骨骼存在有性别差异并表现出与刺猬生活习性相适应的一些特征。  相似文献   

甘蓝型油菜显性细胞核雄性不育系宜3A花药发育的解剖学研究   总被引：9，自引：2，他引：7  

杨光圣  瞿波  傅廷栋 《华中农业大学学报》1999,18(5):7

对甘蓝型油菜显性细胞核雄性不育系宜３Ａ 花药发育过程中的显微结构和超微结构的观察结果表明, 宜３Ａ 雄性败育发生于花粉母细胞阶段, 其主要特点是花粉母细胞不进行减数分裂, 不能形成二分体或四分体; 花粉母细胞原生质体浓缩并逐步收缩, 最后解体; 在相当于正常油菜的单核小孢子阶段, 花粉母细胞壁上形成“类花粉壁”; 同时, 其绒毡层细胞质浓缩, 并逐步解体。  相似文献   

黄条魳(Seriola aureovittata)形态度量与内部结构特征          下载免费PDF全文

李荣  徐永江  柳学周  史宝 《渔业科学进展》2017,38(1):142-149

为了全面认识黄条(Seriola aureovittata)生物学特性,利用传统测量方式、框架测度法、几何形态测量法和解剖学方法,观察和测度了其外部形态特征、可量与可数性状及内部结构特征,并模拟构建了黄条形态性状度量框架图.观察了黄条不同部位鳞片和耳石形态特征,比较了各形态度量性状的比值关系,发现全长与体长比值、下颌长与上颌长比值、尾柄长与尾柄高比值变异较小,表明这些性状关联密切.利用统计分析方法建立了黄条全长(TL)与体重(BW)之间的关系模型:BW=2.1652TL2-140.35TL+2479.9 (R2=0.9812),体高(BH)与体重间的关系模型:BW=0.7575BH30059(R2=0.9816).研究分析表明,在黄条的12个可量形态性状中,除眼径外的其他11个形态性状间均存在显著相关关系.通径分析进一步揭示了体高和体长性状是影响体重的2个关键因素,其对体重的决定程度分别达41.34％和13.11％,它们对体重的共同决定程度达42.88％.本研究观察描述了黄条内部结构特征,其比肠长为0.62-0.69,脊椎骨数量为23-25,总出肉率可达75％.本研究结果可为黄条种质判别、系统分类及人工繁育与养殖技术开发提供形态认知依据.  相似文献   

课程思政融入《动物解剖与组织胚胎学》教学实践中的探索     

马淑慧  李留安  丁向彬  诸葛增玉  徐刚 《畜牧兽医杂志》2023,(2):139-142

课程思政是高校落实立德树人教育根本任务的有效途径。《动物解剖与组织胚胎学》是高等院校动物医学等相关学科领域的专业基础课之一。本文通过剖析《动物解剖与组织胚胎学》课程中的思政元素案例,以期为专业教育与思政教育的有效结合提供新思路,推动新农科背景下专业课程思政的建设。  相似文献   

“学为中心”视域下动物解剖学教学方法的反思     

陈敏  刘容序  何敏  焦凤超  刘涛 《畜牧兽医杂志》2024,43(3):143-145

由于信息技术的快速发展和动物医学专业需求的变化,动物解剖学教学在内容和方法方面发生了重大变化。动物医学专业教育已从被动和以教师为中心向积极、以临床为基础和以学生为中心转变。本文在“学为中心”背景下分析各种教学模式在动物解剖学教学中的作用和有效性。  相似文献