相关实验视频
Updated: Jul 10, 2026

06:13
Solid Plate-based Dietary Restriction in Caenorhabditis elegans
Published on: May 28, 2011
概括
惰 (Cryptoses choloepi) 幼虫在三指惰 (Bradypus infuscatus) 的便中发展. 成人蝶出现并飞去寻找惰动物,完成与惰动物行为相关的独特生命周期.
科学领域:
- *生态学和动物行为
- * 昆虫-节肢动物生命周期
- * 热带生态系统中的共生关系
背景情况:
- * 惰 (Cryptoses choloepi) 的生命周期与三指 (Bradypus infuscatus) 的生命周期密切相关.
- *惰居住在宿主惰的毛皮上,但它们的繁殖周期与惰的罕见排便事件有关.
- * 了解这种关系是理解热带雨林内特殊生态的关键.
研究的目的:
- *为了阐明惰的繁殖策略和生命周期,Cryptoses choloepi.
- *详细介绍成年雌性与惰便有关的特定行为.
- * 描述森林树冠内新出现的的分散机制.
主要方法:
- *对惰在它们的自然息地中的行为进行观察研究.
- * 记录了三指的排便模式和相关的活动.
- *从堆中追踪的出现和分散.
主要成果:
- * 惰幼虫只居住在布拉迪普斯 (Bradypus infuscatus) 的便中.
- * 成熟的雌性蝶与子一起下降,在子每周排便时,在便中放置蛋.
- *新出现的蝶从便中导航,找到并返回森林树冠中的惰动物.
结论:
- * 惰的虫表现出高度专业化的生命周期,这取决于三指的独特行为.
- * 排卵发生在便中,成年利用的排便时间表进行繁殖.
- * 蝶在出现后找到惰的能力突出了其生存和宿主协会的非凡适应性.
相关概念视频
Dietary Connections
In biological systems, most metabolic pathways are interconnected. The cellular respiration processes that convert glucose to ATP—such as glycolysis, pyruvate oxidation, and the citric acid cycle—tie into those that break down other organic compounds. As a result, various foods—from apples to cheese to guacamole—end up as ATP. In addition to carbohydrates, food also contains proteins and lipids—such as cholesterol and fats. All of these organic compounds are used as energy sources to produce...
Life Histories
Constrained by limited energy and resources, organisms must compromise between offspring quantity and parental investment. This trade-off is represented by two primary reproductive strategies; K-strategists produce few offspring but provide substantial parental support, whereas r-strategists produce much progeny that receives little care. These strategies are related to an organism’s survival likelihood across its lifespan, which is represented by a survivorship curve. Three general types of...
Taste Buds and Receptors
Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
iChip
The cultivation of environmental microorganisms has long been hindered by the inability to replicate complex native conditions in vitro. The isolation chip (iChip) addresses this limitation by facilitating the growth of previously uncultivable microorganisms through in situ incubation. Designed for high-throughput microbial cultivation, the iChip comprises hundreds of microchambers, each capable of housing a single microbial cell. These microchambers are loaded with a mixture of molten agar and...
Cholera
Cholera is an acute gastrointestinal disease caused by the Gram-negative bacterium Vibrio cholerae. It is transmitted primarily via the fecal-oral route through the ingestion of contaminated water or food.Vibrio cholerae is a motile, Gram-negative bacterium of the family Vibrionaceae, primarily associated with waterborne outbreaks in areas with inadequate sanitation. Although over 200 serogroups of V. cholerae exist, only O1 and O139 are responsible for epidemic cholera. The O1 serogroup,...
Cholecystitis
Cholecystitis is inflammation of the gallbladder, most commonly caused by obstruction of the cystic duct. This blockage prevents bile from draining, leading to gallbladder distension, inflammation, and potentially serious complications. This condition may present acutely or chronically and can happen with or without gallstones.EtiologyAbout 95% of cholecystitis cases are calculous, caused by gallstones blocking the cystic duct, leading to bile accumulation and inflammation of the gallbladder...

