in

Dolphins pre-plan their grocery shopping

Dolphins pre-plan their grocery shopping

These coolest of sea creatures know what they’re doing.

Humans figure out what they’re going to eat before they actually acquire said food. (Unless you’re the kind of person who returns from the supermarket with a bunch of flashy, unrelated items that looked intriguing but you have no idea what to do with. I’m looking at you, papayas.) But what about other animals?

Scientists have never known whether dolphins plan their hunting treks ahead of time. It’s tough to track a dolphin underwater; you can’t exactly ask it to put on a data logger. Dolphins are great swimmers; you wouldn’t be able to touch one with a ten-foot pole if it wasn’t in the mood.

So, what’s a curious scientist to do? Use a five-meter-long pole, obviously.

That’s what a group of researchers did when they conducted a study to figure out just how much planning went into dolphin hunts.

“It is really difficult to approach them and attach something to their backs; you need to be very patient!” said Patricia Arranz, a researcher from the University of St. Andrews who used a five-meter-long pole to attach a data logger to a dolphin.

Because the pole had put them in a techy mood, the scientists also operated underwater robots remotely to track nearby squids, or as dolphins call them, lunch.

“In one of the experiments, we were extremely lucky as the group that the tagged animal was in stayed in the same area, allowing us to track the dolphin every time it was at the surface and observe the prey with the echosounder right where and when the dolphin was foraging,” continued Arranz.

The scientists found that the dolphins were definitely planning their hunt ahead of time. They decided where to look for squid based on where they’d found squid in the past. They even planned multiple stops out along the lines of “Hey guys, let’s hit these nearby squids first, and then go for the big haul deep underwater.”

Just one more reason to think dolphins know what they’re doing. And, if “The Simpsons” are right, that they may eventually conquer the planet.

Let’s block ads! (Why?)

Go to Source

48 Comments

Leave a Reply
  1. CO2激光(CO2 laser / 二氧化碳激光)的波長是10600nm,照射到皮膚上會被皮膚的水份吸收,瞬間將皮膚有問題的組織氣化。CO2激光可以用來消除各種皮膚問題包括疣、癦、痣、脂溢性角化、粉刺和汗管瘤等。當治療後,您的皮膚需要5至10天時間復原。期間保持傷口清潔便可。優點:CO2激光所切割的深度比刮除術較深,亦較精準。可以處理較深層的皮膚問題,例如去除癦、油脂粒、肉粒、疣、珍珠疣、角質增生等。其復原亦較快,減少留下疤痕的機會。它最大的優點在於,能夠進一步減少激光治療過程當中的熱損傷反應,提升了激光治療的安全性,治療過程中幾乎沒有疼痛感

  2. Dysport是A型肉毒桿菌素,為英國一所受嚴格監管的藥廠內透過高科技純化程序提煉的蛋白質。 Dysport更獲美國食品及藥物管理局FDA核准用於美容用途,肯定其效果及安全性。其能有效阻隔神經訊息傳達,令肌肉不受神經控制,減退因肌肉而過度收縮引致的面部動態性皺紋及放鬆過度活躍的肌肉,以達到瘦面、瘦小腿效果;亦能抑制汗腺掛汗的神經系統,有效減少汗水分泌,達到止汗​​及減少異味。Dysport 瘦面 溶脂 Dysport注射到咬肌內,抑制神經肌接頭處乙酰膽鹼遞質的傳遞,使咬肌張力變小而達到瘦臉效果。

  3. 用CO2激光完美的波長與熱作用比例,強大的熱作用可以使陰道粘膜中的膠原纖維、彈性纖維、網狀纖維及有機基質大量增生重塑;CO2的微脈管作用原理使陰道血管重建,血流量增加,細胞功能活躍,進而使陰道緊緻,分泌作用增強、敏感度提高,使陰道恢復年輕、健康狀態。

  4. 當蛋白線埋入皮膚後,皮下組織會將蛋白線視為異物,啟動異物反應,因此刺激膠原蛋白生長,且可促進新陳代謝,更新老化肌膚,所以客戶在術後也會發覺膚質變得較透亮白皙。膠原蛋白提拉線像一個“磁力線”一樣,將埋入處附近的肌肉和脂肪固定在原處,不會往下墜,其後會吸引皮下組織往蛋白線集中部位移動,就會逐漸產生提拉的緊實效果。也被用於填充美容的微整形,蛋白線材就好比蓋房子的鋼骨支架,先埋入皮膚當作基底結構,然後再注入好比水泥的玻尿酸或自體脂肪,因為有吸附力不易擴散,就可穩定固定住填充物,讓立體支撐力效果更好。

  5. 我們採用國際及美國食品及藥物管理局FDA認可的CO2 激光儀 LUTRONICS® SPECTRA SPR, 具安全性, 準確度高 . 二氧化碳激光可安全地去除皮膚上的癦痣、肉粒、疣、老人斑等問題。此激光的幼細光束可準確及直接地將要去除的組織氧化,過程快捷,傷口細小及乾淨,對周圍的皮膚傷害減至最少。一般1-2次就可永久去除。

  6. 激光是單一波段的光能 , 在同一時間發射 , 光線能量較為集中 , 能深入皮膚打擊患處之異常色素或血管 , 溫和地刺激皮膚內的骨膠原更生, 新生的骨膠原令您的膚質光澤柔嫩 , 煥然一新 , 抗老效果顯著。有效治療色斑(雀斑 , 太陽斑 , 咖啡斑 , 太田痣 , 紋身) , 血管問題 (葡萄色斑 , 微絲血管擴張) , 膚色不均 , 皮膚鬆弛 , 毛孔粗大 治療後皮膚會出現短暫的紅腫 , 要注意防曬及遵照醫生指示護理皮膚

Leave a Reply

Your email address will not be published. Required fields are marked *

Loading…

Comments

comments

What do you think?

0 points
Upvote Downvote

Total votes: 0

Upvotes: 0

Upvotes percentage: 0.000000%

Downvotes: 0

Downvotes percentage: 0.000000%

More trees in Sri Lanka will help the beleaguered macaques

Chopped Salad with Shrimp, Blue Cheese and Bacon