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单词 Lek paradox
释义

Lek paradox

中文百科

求偶场 Lek mating

(重定向自Lek paradox)
根据艾草榛鸡而构筑的求偶场模型。每头雄鸟按其地位高低而占据有关位置,由位处首位的alpha-male、到beta-male及gamma-male等,优势个体可吸引八头或以上的雌性与其交配[1]。除此之外,每个个体会守卫约几米的空间(以虚线表示),地位愈高的个体所占有的空间愈大。[2]一般求偶场内有25至30个个体。
三只大尾拟八哥可能正在进行求偶的呜叫
Lek arena de cortejo, en el caso del urogallo de las artemisas Centrocercus urophasianus. Cada macho , bien sea macho-alfa (el de mayor rango), o macho-beta, gamma, etc., defiende un territorio con un tamaño medio de unos pocos metros, y en los que los machos dominantes pueden atraer hasta 8 o más hembras.[1]  Se muestra en el dibujo cada individuo con sus variaciones en su   espacio individual (Proxémica) (representado por las burbujas), apreciándose que los de mayor rango disponen de mayores
Greater sage-grouse at lek, with multiple males displaying for the less conspicuous females

求偶场(英文:lek),也有译作竞偶场,指一个物种的两个或多个雄性聚集于此,透过不同类型的炫耀表演或演示,以达致求偶交配这一目的的场所。当描述这种行为时也有译作群集展示。按照惯例,求偶场在繁殖季节或以前就会建好,同一群雄性会到达这经年不变的场所,并占据特定的位置。牠们为了好好防卫所拥有的场所,有时更会与邻居大打出手。不同物种会以不同的表演作为炫耀手段,如夸张的求偶舞蹈、羽毛展示、歌唱及呜叫较量等。

Lek一字来自瑞典语,意指一些使人愉快而规矩不多的活动或游戏。1871年首次用于动物行为学,指某些物种参与的求偶表演,可能来自瑞典语中leka,意指表演。严格的阶级制度使位处首位的雄性得以占据最有利的中心位置,其他雄性则根据名望以辐射形式按次排列。雌性为了交配而来,但牠们未必会细心选择──通常牠们只会迳自走到占据中心点的雄性所在地。

英语百科

Lek mating 求偶场

(重定向自Lek paradox)
Greater sage-grouse at lek, with multiple males displaying for the less conspicuous females
Lek mating arena, modeled on the sage grouse, in which each male, alpha-male (highest ranking), beta-male, gamma-male, etc., guards a territory of a few meters in size on average, and in which the dominant males may each attract up to eight or more females.[3] In addition, each individual is shown with variations in personal space (bubbles), whereby higher-ranking individuals have larger personal space bubbles.[4] Common bird leks typically have 25–30 individuals. A strict hierarchy accords the most desirable top-ranking males the most prestigious central territory, with ungraded and lesser aspirants ranged outside. Females come to these arenas to choose mates when the males' hierarchy has become established, and preferentially mate with the dominants in the centre.
A posing capercaillie
A group of three male great-tailed grackles that may or may not attract the attention of a receptive female

A lek is an aggregation of males that gather to engage in competitive displays that may entice visiting females who are surveying prospective partners for copulation. Leks are commonly formed before or during the breeding season. A lekking species is defined by the following characteristics: male displays, strong female mate choice, and the conferring of male indirect benefits. Although lekking is most prevalent among avian species, lekking behavior is found in insects, amphibians, and mammals as well.

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更新时间:2025/6/23 14:43:14