Mass mutuwar dabbobi shine daya daga cikin abubuwan da suka fi ban mamaki. Me ya sa dubban dubban tsuntsaye suke jefawa a bakin teku, kuma tumaki suna kiwo tare da dukan garke zuwa abyss daga dutse?
A cikin tarinmu akwai shahararrun shahararren masanan dabbobi da ke cikin sassa daban-daban na duniya.
Mutuwar 'ya'yan hijira a Uganda
A shekara ta 2004, kimanin mutane 300 sun mutu a wani filin shakatawa a Uganda. Dalilin mutuwar dabbobi na mutuwar dabbobi shi ne kamuwa da cuta da anthrax. Rashin kwayoyin cututtukan kwayoyin cutar sun kaddamar da kandami, daga inda hippopotamus sha ruwa.
Mutuwar Pelicans a Peru
A shekarar 2012, a bakin tekun Peru, dauke da kimanin jikin mutum 1200 na tsuntsaye masu mutuwa. Jama'a sun cike da matsananciyar tsoro, yawon bude ido ya tashi daga cikin yankin. A sakamakon haka, an rubuta mutuwar mai ban mamaki har zuwa rashin abinci na abinci na tsuntsaye - anchovies, wanda sakamakon sakamakon gurbataccen ruwa na ruwa ya zurfafa.
Riddle of Blackbirds
Daya daga cikin lokuta mafi ban mamaki da mutuwar dabbobi ya faru a 2011 a Arkansas. Matattu baƙar fata sun fara fada a cikin daruruwan. Bayan kwana biyu, wannan halin ya sake maimaita a Louisiana. Da farko, masana kimiyya sunyi tunanin cewa tsuntsaye sun yi kamuwa da irin mummunan cututtuka, amma nazarin ya nuna cewa babu kwayoyin cututtuka a cikin jikinsu. Amma a jikin gawawwakin mutuwar akwai raunin da yawa. Tun da lokuta sun faru ne a ranar bukukuwan Sabuwar Shekara, aka nuna cewa dalilin mutuwar mutuwar shine wasan wuta. Suna iya tsoratar da kullun daga gidajen su kuma ba su tsoro. Watakila, tsoro da rashin tsoro a cikin duhu, tsuntsaye sun fara tashi akan gine-gine da bishiyoyi, sakamakon haka suka sami raunuka mai tsanani kuma suka mutu.
Dolphins-suicides
A watan Fabrairun 2017, fiye da 400 dabbar da aka yi a tsere zuwa bakin teku na New Zealand. A sakamakon wannan yunkuri na kansa, kimanin mutane 300 aka kashe, sauran sunyi nasarar cire su daga shallows da ceto.
Wannan ba shine batun farko ba. Daga lokaci zuwa lokaci a sassa daban-daban na rikodin masallatai na duniya da tsuntsaye da whales. Me ya sa dabbobi suke yin wannan, ya kasance ba a sani ba.
Mutuwar mummunar mutuwar farin geese a Montana
A shekarar 2016, dubban fararen geese sun mutu a cikin kogin Lake Berkeley-Pit, dake Montana. A garken tsuntsaye suka tashi a cikin tafkin kuma suka yanke shawara su jira jiragen ruwan sama mai zuwa a samansa. Wannan yanke shawara ya zama mummunan rauni. Kogin ya ƙunshi babban adadi mai guba mai guba, ciki har da jan karfe, arsenic, magnesium, zinc, da sauransu. Shan shan ruwa mai guba daga kandami, kusan dukkanin geese ya mutu, kawai kimanin tsuntsaye 50 ne daga 10,000 suka tsira.
A mutuwar reindeer a Norway
A shekara ta 2016, an kashe 'yar macijin 323 a cikin sansanin kasar Norwegian na Hardangervidda. Masu bincike sun yi imanin cewa dalilin mutuwar duk dabbobi shi ne aikin walƙiya.
Rashin mutuwar ruwa a Chile
A watan Maris na 2013, an rufe bakin teku na Coronel Chilean da dubban gawawwaki da ƙuƙuwa. Don dalilai marar dalili, mazauna mazaunan teku suna tsalle a bakin teku, suna zana sandar bakin teku a ja. Binciken da ya faru ba ya kai ga wani abu ba, kuma har yanzu an rufe shi da wani ɓoye na ɓoye.
Babban mummunar mutuwar kwari a Jamus
Wani abu mai ban mamaki shine ya faru a shekara ta 2006 a daya daga cikin tafkuna a yankin Hamburg. Kwanan da ke zaune a cikin tafkin ba zato ba tsammani sun fara mutuwa, yayin da mutuwarsu ta kasance kamar labaran daga fina-finai mafi ban tsoro. Da farko tsuntsaye suna sannu a hankali, kuma bayan da ƙarar su ya karu da sau 3-4, sai kwatsam suka fashe da fashe, suka watsar da su a kusa. Saboda haka, kimanin 'yan amphibians 1000 sun mutu. Wani mummunan mutuwar kwaro ne mai muhawara, amma masana kimiyya ba su iya gano ainihin dalilai ba.
Mass kashe kansa na tumaki a Turkey
A shekara ta 2005 kusan tumaki 1,500 sun gudu daga wani dutse a Turkiyya. A sakamakon wannan yunkuri na kisan kai, an kashe mutane 450 zuwa mutuwa, kuma sauran suka tsira saboda lalata gawawwakin gawawwakin mutuwar.
Dubban mutuwar kifi a Texas
A watan Yuni 2017, an gano dubban kifi da suka mutu a bakin tekun Gulf of Matagorda a Jihar Texas. Yankunan bakin teku a kilomita 1.5 sun kasance tare da gawawwaki na mendadenas, da jiragen ruwa da kwari. Dalilin asarar kifaye ya zama maras tabbas, amma wasu masana kimiyya sun gaskata cewa ciwon daji zai iya zubar da guba wanda ya ɓoye wasu algae yayin flowering.