西大西洋蓝鳍金枪鱼的性成熟
Sexual maturity in western Atlantic bluefin tuna.
作者信息
Heinisch Gilad, Rosenfeld Hanna, Knapp Jessica M, Gordin Hillel, Lutcavage Molly E
机构信息
1] Large Pelagics Research Center, University of Massachusetts Amherst, Gloucester, Massachusetts 01930, USA [2] University of New Hampshire, Durham, New Hampshire 03824, USA.
Israeli Oceanographic and Limnological Research, National Center for Mariculture, Eilat, 88112, Israel.
出版信息
Sci Rep. 2014 Nov 28;4:7205. doi: 10.1038/srep07205.
We introduce a novel endocrine approach for assessing the unresolved matter of the timing of sexual maturation in western Atlantic bluefin tuna (ABFT), a highly migratory population whose status remains uncertain. Ratios of follicle stimulating hormone to luteinizing hormone, a sexual maturity indicator, in all ABFT ≥ 134 cm curved fork length (CFL) were <0.4, similar to Mediterranean spawners, indicating that western ABFT mature at considerably smaller sizes and at a much younger age than currently assumed (≥ 185 cm CFL).
我们引入了一种全新的内分泌学方法，用于评估西大西洋蓝鳍金枪鱼（ABFT）性成熟时间这一尚未解决的问题。ABFT是一个高度洄游的种群，其种群状况仍不确定。在所有叉长曲线（CFL）≥134厘米的ABFT中，促卵泡激素与促黄体生成素的比率（一种性成熟指标）均<0.4，这与地中海产卵鱼相似，表明西大西洋蓝鳍金枪鱼成熟时的体型比目前所认为的（CFL≥185厘米）要小得多，且年龄也小得多。
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