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悲伤的海龟搁浅是保护成功的标志!

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Peter Richardson博士

彼得·理查森博士,海洋恢复的负责人

2021年12月21日

It's hard not to feel sad at the sight of a young and emaciated tropical turtle washing up on a freezing British beach – cold-stunned, 昏睡和长, 远离家乡. But these increasingly frequent UK sightings could actually be a sign of their recovery.

最近海龟目击

几周前, the papers reported on Tally – a juvenile Kemp’s ridley turtle that washed up barely alive on Talacre Beach in Clwyd, 风暴亚温之后的北威尔士. The turtle was reported to British Marine Life Divers Rescue (BDMLR) and promptly taken to Anglesey Sea Zoo for rehabilitation.

Another young Kemp’s ridley was reported to the Marine Conservation Society 野生动物看到的页面 第二天从哈里斯岛出发. Sadly that one wasn’t so lucky and was dead when discovered by beach walkers.

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坎普的雷利龟被冲上了哈里斯岛

来源:露丝·A·汉密尔顿

英国水域的海龟

这些搁浅并不罕见. 坎普的雷利 are in fact the third most commonly reported sea turtle in our seas, with 69 sightings reported in UK and Irish waters between 1748 and 2020. 他们远远落后 红海龟 (264)和 大海龟 (2108年),这种情况更为常见.

Other sea turtle species recorded in UK and Irish waters include the 绿海龟 (15)记录,一个 玳瑁 1983年在爱尔兰,还有一个 榄蠵龟 2016年在安格尔西岛搁浅的海龟. Named Menai, that turtle was also taken to Anglesey Sea Zoo for rehabilitation.

The only sea turtle species not recorded here is the flatback turtle, 但它们只出现在澳大利亚周围的海域, so it would be nothing short of a miracle if a flatback turned up in Blighty!

报告发现海龟

报告现在

需要bet356电竞平台的冬季游客

Leatherbacks regularly migrate to UK waters and time their arrival so they can gorge on our abundant summer jellyfish blooms – happy, 健康的, live and very fat adult 大海龟 are spotted swimming in our seas every summer.

All the other sea turtle species are referred to as hard-shelled sea turtles because they have tortoise-like shells, 与灵活, 棱皮龟坚韧的外壳.

棱皮龟可以在温度低至5摄氏度的水域觅食, but the hard-shelled turtles prefer warmer waters – they aren’t supposed to be here. 误入不利的北大西洋洋流的, 它们被无情地拖入bet356电竞平台寒冷的海洋. 它们在低于15摄氏度的温度下停止进食, and become comatose after prolonged exposure to temperatures lower than 10 degrees Celsius.

冬天,在英国水域几乎总是能发现这些坚硬的贝壳. They are usually small juveniles less able to swim against currents, 几天没吃东西,总是很瘦弱.

Leatherbacks regularly migrate to UK waters and time their arrival so they can gorge on our abundant summer jellyfish blooms – happy, 健康的, live and very fat adult 大海龟 are spotted swimming in our seas every summer.

彼得·理查森博士,海洋恢复的负责人

bet356电竞平台还看到更大的红海龟前肢缺失, cleanly cut and almost certainly the result of an interaction with fishing gear on the high seas.

一个愤怒的, 被缠住的红海龟咬得很有力, and it’s easier for fishermen to remove a snapping loggerhead from their gear with a swift machete hack than to risk fingers trying to carefully disentangle it. These tragically compromised turtles also struggle to swim against the North Atlantic Drift.

恢复链海龟

In the 20 years I have been working on turtles in the UK I have seen a few of these small stranded turtles and they can be a sorry sight – although with the right expert care and treatment they can be revived.

我记得2007年参观过海洋生物中心. There had been a few winter turtle strandings and the staff were caring for a loggerhead and a Kemp’s ridley.

看到这些胖乎乎的孩子真是太棒了, well-fed youngsters swimming around their warm pools in preparation for airlift to the Canary Islands where the successfully rehabilitated turtles are eventually released back into warmer seas.

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修复坎普雷利龟,海洋生物中心

信贷:彼得·理查森

复苏的迹象

事实上,bet356电竞平台不应该对这些搁浅事件感到太难过. 埃克塞特大学(Botterel et al. 2020) confirmed that incidences of hard-shelled turtle strandings in UK and Irish waters have increased since the 1980s.

对于坎普的雷德利来说,这是好消息的反映. Kemp's ridleys nest only on a couple of beaches in the Gulf of Mexico. 到目前为止,最大的繁殖地在墨西哥(新牧场), Michoacán) and a very much smaller one has been established in Texas (Padre Island).

After devastating declines since the late 1940s due to poaching on the nesting beaches and bycatch in shrimp trawls, 在20世纪80年代,坎普的雷利龟濒临灭绝. The number of nests reached a record low of 702 in 1985, representing fewer than 250 nesting females.

从那时起, the governments of Mexico and USA have invested in strict protection on the nesting beaches and introduced mandatory turtle-excluder devices on shrimp trawl nets – massively reducing bycatch in the Gulf of Mexico.

这导致了坎普的ridley的恢复, with 2020 estimates suggesting there are now about 7000 to 9000 nesting females in the population. 一个惊人的结果, but still a species in need of conservation support – the numbers are still relatively low and they remain the world’s rarest species of sea turtle.

But this rebounding population is the reason why we are likely to see more juvenile Kemps ridley stranding on UK shores these days. More and more hatchlings are being produced at the nesting beaches and so more juveniles now show up on our shores. These sad strandings are a sign of a fantastic conservation success.

More and more hatchlings are being produced at the nesting beaches and so more juveniles now show up on our shores. These sad strandings are a sign of a fantastic conservation success.

彼得·理查森博士,海洋恢复的负责人

如果你发现一只乌龟该怎么办

With all this stormy weather we expect to see more juvenile turtles stranding on our shores over the winter. 如果你在沙滩上发现一只海龟,你可以帮忙. 不把它放回海里. 如果可能的话, get it away from the surf in a sheltered place and report it to the relevant number using the UK Turtle Code.

无论它是死是活,专家都会来收集, because even dead specimens can provide valuable scientific information from the postmortems carried out under the 英国鲸类搁浅调查计划 (它也调查海龟!).

也请报告你的龟在 野生动物出没 bet356电竞平台网站的网页.

Let’s hope that Tally the Talacre Kemp’s ridley – and any other turtles rescued from our beaches this winter – respond well to a bit of UK hospitality and eventually make it back to warmer seas.

发现一只海龟或水母? bet356电竞平台想知道!

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