Especially, the role of the lagena in birds'nervous systemn is of much interest.The macula lagena in birds is located at the apical end of the cochlea and contains many tiny otoliths.

瓶狀囊進化地位的特殊性引起了研究者們極大的關注日日摸日日碰日日添夜夜爽，而對于它在鳥類神經系統(tǒng)中究竟起怎樣的作用更是人們所關心的問題久久综合迷奸。

It remains disputable that birds can obtain geomagnetic information for homing because otoliths in the lagena are rich in elements Fe and Zn.

有人認為瓶狀囊的耳石中Fe美女宗合网、Zn等元素含量較高亚洲综合无码一区二区毛片，使得鳥類能夠感受地球磁場而具有導航能力，但這個假說目前還存在爭議欧美性爱熟女视频。

The macula lagena is innervated and has neural projections to the brainstem, but its physiological function is still unclear. It remains disputable that it is because otoliths in the lagena are rich in elements Fe and Zn that birds can obtain geomagnetic information for homing.

有人認為瓶狀囊的耳石中Fe噜噜噜色、Zn等元素含量較高，使得鳥類能夠感受地球磁場而具有導航能力中文字幕在线看，但對于這個假說目前還存在爭議91黄在线观看国产。

From otoliths, the spawning times of these three species are all estimated to occur much later in the year than when small leptocephali are found at sea, indicating that ages appear to be underestimated.

從耳石來看，這三種鰻的產卵時間按照耳石推斷出來都比實際發(fā)現柳葉鰻的時間要晚一些玖玖在线播放网站。

After acclimating 1 day, the leptocephali were immersed in a tetracycline solution to mark the otoliths with a fluorescent band as the onset of the experiment (Day 1) and then reared in the treatments spiked with different concentrations (2×一级毛片a人爱免费视频性色、4×、8×) of Sr and Ba.

個別添加 SrCl2 ˙ 6H2O和Ba(NO3)2 兩種藥品www.youjizz.com自拍，將飼育水依2×视色电影、4×、8×的比例調配成含控制組的四個濃度加兩重復添加實驗国产又刺激又黄又爽又湿，飼育螢光標示后的柳葉魚欧美一级做一级a做片性视。

In addition, as the grey mullet juvenile dispersed from the high saline offshore to the low saline estuarine nursery ground, a corresponding SGZ was deposited and a decreasing Sr/Ca ratios were detected in otoliths of the fish.

與人工孵化的烏魚苗之發(fā)育階段比對結果色欲色香天天天综合视频在线观看，耳石中的TC可以對應到烏魚仔魚期至稚魚期的轉變時期99久久99久久久99精品齐，而耳石中的SGZ則是烏魚稚魚期自高鹽度之外海進入低鹽度之河口域地區(qū)所形成的記號。

Sectioned otoliths displayed clear increments that were used to estimate fish ages.

清晰的耳石截面用來評估魚的年齡。

In the first test, the water had more than six times the usual amount of carbon dioxide, and the little fish grew otoliths 15% to 17% larger than normal.

在第一次試驗的時候欧美日韩经典自拍视频在线，水中的二氧化碳濃度是普通海水的六倍多黄色视频A级精品一区二区，而這種小魚的耳石比正常情況增大了15%至17%。

Otoliths are made of calcium carbonate and their size and shape is highly variable among species.

內耳由碳酸鈣構成黄色网站视频观看久操网，有很大的差別欧美另类第一区。

They wondered if it also would reduce the size of the otoliths.

科學家們想知道，這種酸性是否也可以縮減耳石的大小中文字幕欧美综合第一页。