Mating systems of two midwater-spawning cichlids,Cyprichromis microlepidotus andParacyprichromis brieni, in Lake Tanganyika
Mating systems of two midwater-spawning cichlids,Cyprichromis microlepidotus andParacyprichromis brieni, in Lake Tanganyika
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坦噶尼喀湖两种中水产卵丽鱼科鱼（Cyprichromis microlepidotus 和 Paracyprichromis brieni）的交配系统
DOI：
10.1007/bf02347596
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发表时间：
1996
影响因子：
1.2
通讯作者：
H. Ochi
中科院分区：
文献类型：
--
作者：
H. Ochi
对坦噶尼喀湖2种母口育稚鱼——小鳞鲤和短副鲤的繁殖习性进行了调查。虽然在雄性交配领地的基质上产卵在母口育鱼中很普遍，但c。microlepidotusandP。布里尼在水柱中被典当了。马拉克。小鳞蜥在开阔水域建立交配领地，雄鳞蜥在开阔水域建立交配领地。brieniid在靠近垂直岩石表面的固定产卵点附近这样做。在这两个物种中，雌性都会访问雄性的交配区域，在产卵和收集卵后很快离开。偷偷摸摸，只有在p。这可能是由于这个物种中运动鞋的避难所的存在。FemaleC。小鳞翅目在一个雄性领地内产下约9个卵。相比之下，女性。布里尼把一窝大约11个蛋分给几个雄性。在最后的卵子释放后，雌鹰。小鳞蜥会反复靠近它们的配偶，用嘴靠近后者的腹部（用鼻子蹭），但雌蜥不会。布里恩常常不碰就走了。雄性可能会在用鼻接触的过程中排出精子，使雌性嘴里的卵子受精。然而,maleP。当雌鱼没有用鼻子蹭的时候，它们也会在产卵的雌鱼附近排出精子。这种行为似乎是雄性对雌性配偶不忠的一种反制措施，因为雄性只有在雌性摩擦时才能排出精子，从而无法确保卵子的父权。
The breeding habits of 2 maternal mouthbrooding cichlids,Cyprichromis microlepidotusandParacyprichromis brieni, were investigated in Lake Tanganyika. Although spawning on the substrate in the male's mating territory is prevalent in maternal mouthbrooders, bothC. microlepidotusandP. brienispawned in the water column. MaleC. microlepidotusestablished their mating territories in the open water column, while maleP. brienidid so around fixed spawning sites near a vertical rock surface. In both species, females visited male mating territories, departing soon after spawning and collecting the eggs. Sneaking, which was observed only inP. brieni, may be attributed to the presence of refuges for sneakers in this species. FemaleC. microlepidotusdeposited their entire clutch of about 9 eggs in one male territory. In contrast, femaleP. brienidivided their clutch of about 11 eggs among several males. After the final egg-release, femaleC. microlepidotusrepeatedly approached their mate, with the mouth near the abdomen of the latter (nuzzling), but femaleP. brienioften departed without nuzzling. Males may eject sperm during nuzzling to fertilize eggs inside the female's mouth. However, maleP. brieniis also known to eject sperm near spawning females when the females are not nuzzling. Such behavior seems to be a male countermeasure against female mate infidelity, because males could not ensure paternity of eggs by ejecting sperm only during female nuzzling.