Inbreeding in three-spined sticklebacks (Gasterosteus aculeatus L.): effects on testis and sperm traits
Inbreeding in three-spined sticklebacks (Gasterosteus aculeatus L.): effects on testis and sperm traits
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三刺刺鱼（Gasterosteus aculeatus L）的近交：对睾丸和精子性状的影响
DOI：
10.1111/j.1095-8312.2012.01950.x
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发表时间：
2012
影响因子：
1.9
通讯作者：
Bakker
中科院分区：
文献类型：
--
作者：
Mehlis;Frommen;Bakker
亲属之间的交配往往导致近亲繁殖的衰退，并被认为有强烈的影响，如生育力和性腺/配子质量的健身性状。然而，有关这一主题的数据是矛盾的，特别是在鱼类稀缺。三棘鱼（Gasterosteus aculeatusL.）在受精和孵化成功率、存活率、身体对称性和行为特征方面表现出近交衰退。到目前为止，任何知识的影响近亲繁殖的男性的性腺和配子是缺乏在这个物种。在本研究中，睾丸和精子性状进行了定量的远交和近交系男性。总体而言，这些特征一般不会受到近亲繁殖的损害，这一结果并没有改变第二/第三代的兄弟姐妹交配。然而，睾丸亮度，一个潜在的氧化应激指标，与精子数量呈负相关。此外，具有较高身体状况的近交系雄性具有显着更明亮的睾丸，而他们的精子数量与精子质量显着负相关（如通过头部体积估计）。这种权衡并没有出现在远交的男性。近亲繁殖对睾丸和精子性状的影响相对较小，这可能是由于达到生殖阶段的近亲繁殖个体数量较少。
Mating between relatives often results in inbreeding depression, and is assumed to have a strong effect on fitness traits such as fertility and gonad/gamete quality. However, data concerning this topic are contradictory and particularly scarce in fishes. Three-spined sticklebacks (Gasterosteus aculeatusL.) show inbreeding depression in fertilization and hatching success, survival rates, body symmetry and behavioural traits. To date, any knowledge of the impact of inbreeding on males' gonads and gametes is lacking in this species. In the present study, testis and sperm traits were quantified in outbred and inbred males. Overall, these traits were not generally impaired by inbreeding, and this result was not changed by a second/third generation of brother–sister matings. However, testes brightness, a potential measure of oxidative stress, was negatively correlated with sperm number. Additionally, inbred males with higher body condition had significantly brighter testes, whereas their sperm number was significantly negatively correlated with sperm quality (as estimated by head volume). Such a trade-off did not appear in outbred males. The comparatively small impact of inbreeding on testis and sperm traits might be explained by the low number of inbred individuals that reached the reproductive phase.
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影响因子：
9.2
作者：
Gage, MJG;Surridge, AK;Hewitt, GM
通讯作者：
Hewitt, GM
DOI：
10.2307/2529571
发表时间：
1992-04
期刊：
--
影响因子：
--
作者：
W. Becker
通讯作者：
W. Becker
黑色素的光保护——黑人和白种人皮肤的比较。
DOI：
--
发表时间：
1979
期刊：
Journal of American Academy of Dermatology
影响因子：
--
作者：
K. Kaidbey;P. Agin;R. Sayre;A. Kligman
通讯作者：
A. Kligman
雄性孔雀鱼性色的波动不对称、斑点不对称和近交衰退
影响因子：
3.8
作者：
L. Sheridan;A. Pomiankowski
通讯作者：
A. Pomiankowski
近亲繁殖影响了计算机动画刺鱼中雌性对对称性的偏好
影响因子：
2.6
作者：
D. Mazzi;R. Künzler;C. Largiadèr;T. Bakker
通讯作者：
T. Bakker