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在鹅喉羚(一种善于隐藏的有蹄类动物)中,反捕食策略在很大程度上由母羚控制。

Antipredator tactics are largely maternally controlled in goitered gazelle, a hider ungulate.

作者信息

Blank David

机构信息

Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, the Chinese Academy of Sciences, Urumqi, China; Research Center for Ecology and Environment of Central Asia, Bishkek, Kyrgyzstan.

出版信息

Behav Processes. 2017 Mar;136:28-35. doi: 10.1016/j.beproc.2017.01.004. Epub 2017 Jan 11.

Abstract

Predation is usually the primary cause of infant death among ungulate species, with the annual variation in the survival of neonates over their first summer a major factor in the population dynamics of many ungulates. Consequently, the maternal rearing strategy of a species is crucial for its reproductive success. Since the roles mothers and fawns play in the implementation of antipredator strategies in hider species have been poorly understood until now, this paper considers this behavior in the goitered gazelle, which is a typical hider species. I found that within the first month after birth goitered gazelle mothers largely controlled the behavior of their fawns both during the active period (determining the timing of separation and reunion with fawns, movement direction and speed, and bed site location) and the hiding period (keeping the hiding fawns under continuous watch from a distance, especially right after birth). With age the fawns' mobility increased and cases of independent behavior of fawns apart from their mothers were found more often, though females continued to control their fawns' behaviors. The main elements of the goitered gazelles' maternal care strategy - generally related to protecting fawns from potential predator attack - are very similar to other hider species in both bovids and cervids, which demonstrates a standard set of maternal care behaviors, irrespective of predator type or its behavioral peculiarities. Such maternal behaviors, however, likely only decrease the predation losses to a certain extent.

摘要

捕食通常是有蹄类物种幼崽死亡的主要原因,新生幼崽在第一个夏天的年存活率变化是许多有蹄类动物种群动态的一个主要因素。因此,一个物种的母育策略对其繁殖成功至关重要。由于到目前为止,人们对母鹿在隐藏型物种反捕食策略实施中所起的作用了解甚少,本文以鹅喉羚这一典型的隐藏型物种为例,对这种行为进行了研究。我发现,在出生后的第一个月内,鹅喉羚母亲在活动期(决定与幼崽分离和团聚的时间、移动方向和速度以及卧息地点)和隐藏期(从远处持续监视隐藏的幼崽,尤其是在幼崽刚出生后)都在很大程度上控制着幼崽的行为。随着幼崽年龄的增长,其活动能力增强,与母亲分开独自行动的情况也更常见,不过雌性仍继续控制着幼崽的行为。鹅喉羚母育策略的主要要素——通常与保护幼崽免受潜在捕食者攻击有关——与牛科和鹿科的其他隐藏型物种非常相似,这表明无论捕食者类型或其行为特点如何,都存在一套标准的母育行为。然而,这种母性行为可能只会在一定程度上降低捕食造成的损失。

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