養殖三文魚轉食素

挪威的一些三文魚養殖場改以植物為主的魚糧,推動可持續水產養殖。植物魚糧主要由大豆、玉米及小麥,再加入黑水虻幼蟲以補充蛋白質、脂肪及鈣。三文魚原是肉食性魚類;這種植物魚糧可降低三文魚養殖的環境足跡,並減低將寄生蟲或疾病傳播給其他野生動物的風險。

Some salmon farms in Norway are switching to a mainly plant-based diets for a more sustainable aquaculture. The new pellets are mainly made with soy, corn and wheat, as well as black soldier fly larvae for protein, fat and calcium. Salmons are naturally carnivorous fish; this new diet can lower the environmental footprint for salmon farming and lower risk of transmitting parasite or disease to other wildlife.

https://phys.org/news/2024-02-norway-salmon-farms-veggie-menu.html

建公路恐威脅古老柏樹

智利政府計劃建造一條穿過國家公園的高速公路,該國家公園是其中一種最古老的樹種——智利柏(Fitzroya cupressoides)的主要分佈地。科學家擔心除了威脅到智利柏,這條道路亦會影響到達爾文狐(Lycalopex Fluvipes)等其他瀕危物種,並導致更多非法採伐及入侵物種增加的機會。

Chilean government is planning to build a highway across a national park, which is home to one of the longest-living trees species, the alerce (Fitzroya cupressoides). Scientists worry the road will damage home of the alerce, as well as other endangered species like the Darwin’s fox (Lycalopex fluvipes), and allow more illegal logging and increase invasive species.

https://news.mongabay.com/2024/02/a-highway-project-in-chile-threatens-one-of-the-worlds-longest-living-tree-species/

受保護海馬被誤捕及販賣

研究人員估計,每年有 230 萬隻巴塔哥尼亞海馬 (Hippocampus patagonicus) 於巴西南部海岸被意外捕獲。漁民會將這些受保護的海馬於黑市出售作民間療法或護身符之用。研究人員表示,由於打擊非法貿易太困難,重點解決底拖網捕撈的情況可能可減少誤捕問題。

Researchers estimated 2.3 million Patagonian seahorse (Hippocampus patagonicus) were caught accidentally in Brazil’s southern coast each year. fishers then sell these protected seahorses in black market for folk remedies or talismans. Researchers said as it’s too hard to crack the illegal trade, focusing on fixing the situation of bottom trawling may reduce the by-catching problem.

https://www.popsci.com/environment/seahorse-black-market/

靠情歌尋更多長臂猿群體

在緬甸,科學家靠高黎貢長臂猿的情歌發現44個新的群體!高黎貢長臂猿於 2017 年在中國首次被描述。由於長臂猿不會游泳,科學家推測牠們的族群可能在兩條河流之間延伸。長臂猿有每天早上在森林樹冠上與伴侶互相唱情歌的習慣,科學家因此能靠記錄牠們的歌聲尋獲牠們的群體。

In Myanmar, scientists identified 44 new groups of Skywalker gibbons (Hoolock tianxing) by listening to their love songs! Skywalker gibbons were first described in 2017 in China. Because the gibbons cannot swim, scientists theorized their population may extend between two rivers. And with the help of gibbon couples’ habit of singing love songs to each other every morning on the forest canopies, scientists were about to make this new discovery.

https://link.springer.com/article/10.1007/s10764-024-00418-6

蜜蜂從熊蜂身上偷取花粉

研究發現蜜蜂會在熊蜂身上偷花粉。 熊蜂有毛茸茸的身體,常會黏到花粉。研究人員對一個地區的蜜蜂進行了三年的觀察,發現該區蜜蜂採集了 31 種花粉,其中只有3種親自採摘,其餘的都是從熊蜂的背上偷取。

A study discovered honeybees are stealing pollen from bumblebees. Bumblebees have hairy bodies and pollen got stuck on them. researchers observed the bees in a certain location for three years and found that honeybees only collect pollen from 3 of the 31 flowers themselves, and stole the rest off bumblebees’ backs.

https://www.sciencenews.org/article/honeybees-italy-steal-pollen-bumblebees

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