| 崔奕,姚达章,林小涛,刘明中,王正鲲,许忠能.2016.广东从化地区不同生境食蚊鱼种群的繁殖生物学特征.动物学杂志,51(1):57-65. |
| 广东从化地区不同生境食蚊鱼种群的繁殖生物学特征 |
| Reproductive Biology of Mosquito Fish (Gambusia affinis) in different Habitats in Conghua, Guangdong |
| 投稿时间：2015-01-05 修订日期：2016-01-06 |
| DOI：DOI: 10.13859/j.cjz.201601007 |
| 中文关键词: 食蚊鱼 栖息生境 繁殖力 卵巢发育 形体指标 |
| 英文关键词:Gambusia affinss habitats fecundity ovarian development physical indicators |
| 基金项目:国家自然科学基金(30970555)资助。 |
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| 中文摘要: |
| 本文从繁殖群体的形体特征、卵巢发育与繁殖力等方面对广东从化地区溪流、池塘、农田3个不同生境的食蚊鱼种群展开比较研究。结果发现无论流动水体还是静水水体,食蚊鱼繁殖期均为3月至12月,食蚊鱼繁殖群体中雌鱼占的比例明显高于雄鱼。池塘生境的雌鱼周年平均体长、体质量显著大于农田生境,但在繁殖期,除卵径较大外,其性腺指数、怀卵/仔量、体质量相对繁殖力等明显低于农田。溪流生境中,雌鱼在繁殖期的性腺指数与体质量相对繁殖力位于前2者之间,但更接近于池塘生境,其怀卵量较少,卵径较大。研究结果表明,不同群体食蚊鱼繁殖特性存在一定差异,与其栖息环境的稳定性和饵料供应条件有关。 |
| 英文摘要: |
| This research assessed morphology, ovarian development, fecundity, etc. of the breeding population of mosquito fish, Gambusia affinis, found in streams, ponds, and farmlands of Conghua City, Guangdong. It was found that in no matter the water flow or the static water bodies, mosquito fish breeding season were from March to December, and there were more females than males. Female fish in ponds had significantly larger one-year means of body length and body mass than those in farmlands, but in the breeding season,their gonad indexes, brood amounts, body mass relative fecundity were significantly lower than those of farmlands, except for the larger egg sizes. Females in streams in the breeding season had the gonad indexes and body mass relative fecundity between those of ponds and farmlandsbut closer to those of the ponds, they conceived less but larger eggs.The results showed that there were different reproductive characteristics in different groups of G. affinss, and they were related to the environmental stability and food supply conditions. |
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