Sex Role Differentiation in Brood Defense by a Nicaraguan Cichlid Fish, Amphilophus xiloanensis
Sex Role Differentiation in Brood Defense by a Nicaraguan Cichlid Fish, Amphilophus xiloanensis
复制标题
尼加拉瓜丽鱼科鱼（Amphilophus xiloanensis）在巢防御中的性别角色分化
DOI：
10.18475/cjos.v44i1.a3
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发表时间：
2008
期刊：
影响因子：
2.5
通讯作者：
B. Murry
中科院分区：
文献类型：
--
作者：
K. R. Mckaye;B. Murry
抽象的。在尼加拉瓜的希洛湖中观察到亲本慈鲷 Amphilophus Xiloaensis 的育雏防御行为。该研究在相隔 22 年的两个研究时期进行，即 1972-73 年和 1995 年。在育雏防御过程中观察到雄性和雌性之间的角色分化。雄性保卫领地免受成年同种动物的侵害，而雌性则保卫巢穴免受掠食者的侵害。这些观察结果在相隔 22 年的两个不同研究时期和湖内两个不同位置上是一致的。随着幼崽的成熟，攻击率增加，这与实验室对该物种的发现相矛盾。这些发现强化了巢防御行为作为区分兄弟物种的可能诊断工具的用途。育雏照顾和角色分化的模式在许多代中保持稳定，并且应该是区分兄弟物种的有用特征。
Abstract. Brood defense behaviour of parental Midas cichlids, Amphilophus xiloaensis, was observed in Lake Xiloá, Nicaragua. The research was conducted during two study periods separated by 22 years, 1972–73 and 1995. Role-differentiation was observed between the male and female during brood defense. The male defended the territory from adult conspecifics, while the female defended the brood from predators. These observations were consistent in two different study periods 22 years apart and at two different locations within the lake. Attack rates increased as the brood matured, contradicting laboratory findings on this species. These findings reinforced the use of brood defense behavior as a possible diagnostic tool to differentiate sibling species. The pattern of brood care and role differentiation remained stable over many generations, and should be a useful character for distinguishing sibling species.