Male mate choice in the gynogenetic–sexual complex of crucian carp, Carassius auratus
Male mate choice in the gynogenetic–sexual complex of crucian carp, Carassius auratus
复制标题
鲫鱼雌核发育-性复合体中雄性配偶的选择
DOI：
10.1007/s102110100045
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发表时间：
2002
期刊：
影响因子：
1.1
通讯作者：
K. Iguchi
中科院分区：
文献类型：
--
作者：
H. Hakoyama;K. Iguchi
摘要。无性繁殖的全雌日本鲫鱼Carassius auratus langsdorfii（鲤形目），依靠性“宿主”C. auratus亚种的雄性精子进行雌性繁殖。从理论上讲，如果其他条件相同，雄性对同种雌性的频率依赖的交配偏好可以导致无性和有性鱼类共存。我们的具体问题是，雄性是否更喜欢同性别的雌性而不是无性的雌性，以及个体是否表现出可能导致频率依赖的交配偏好的统治等级。在一个个体选择实验中，一个水箱被分成三个隔间，中间的一个隔间装一只雄性，外面的两个隔间装一只有性生殖的雌性和一只无性生殖的雌性。auratusbrgeri的雄性表现出对排卵的同卵雌性的明显偏好，而不是对排卵的无性雌性。相比之下，在群体交配实验中，一个实验池中有两只雄性、一只有性生殖的雌性和一只无性生殖的雌性，雄性同时与无性生殖和有性生殖的雌性追逐和交配。在群体交配中，雄性的择偶偏好较弱，这在自然种群中是典型的。在群体交配实验中，雌雄鲫之间没有表现出明显的竞争行为。这与其他雌性发育复合体不同，雄性的优势等级表现出强烈的频率依赖交配偏好（例如，Poeciliopsis）。我们得出结论，雄性配偶偏好不太可能是维持日本鲫鱼无性-有性复合体共存的强烈频率依赖力。
Abstract. The asexual all-female Japanese crucian carp, Carassius auratus langsdorfii (Teleostei: Cypriniformes), reproduces gynogenetically, relying on the sperm of males of the sexual "host," C. auratus subspp. Theoretically, frequency-dependent mating preference of males to conspecific females can lead to the coexistence of asexual and sexual fish, if all else is equal. Our specific questions are whether males prefer conspecific females over asexual females and whether individuals show dominance hierarchies that potentially cause frequency-dependent mating preference. In an individual choice experiment, a tank was partitioned into three compartments with the middle one for a single male and the two outer ones for a sexual and an asexual female. The males of C. auratusbürgeri demonstrated a significant preference for ovulated conspecific females over ovulated asexual females. In contrast, in a group mating experiment, a single experimental tank included two males, a sexual female, and an asexual female together, and males chased and mated with both asexual and sexual females equally. Male mate preference was weak in group mating, which is typical in natural populations. Males and females of crucian carp showed no apparent agonistic behavior to each other in the group mating experiment. This is different from other gynogenetic complexes with the dominance hierarchy of males showing strong frequency-dependent mating preference (e.g., Poeciliopsis). We conclude that male mate preference is unlikely to be a strong frequency-dependent force maintaining the coexistence of asexual–sexual complexes of Japanese crucian carp.
与异种雌性交配对雄性帆鳍锦鲤有利。
DOI：
10.1126/science.8278809
发表时间：
1994
期刊：
Science (New York, N.Y.)
影响因子：
--
作者：
Schlupp,I;Marler,C;Ryan,MJ
通讯作者：
Ryan,MJ