Kehidupan HijauGreenLivingMangrove Brigade:Getting Down and Dirty WithMud LobstersMoh points out that the mud lobsters he brought were both female.Bp Moh menunjukkan bahwa kedua udang laut lumpur yang dibawa adalah betina.he humble-lookingcreature commonlyTknown as mud lobsterwas the subject of thepenultimate class of theMangrove Brigade on July 29,2009 that was held at theMangrove Research Centre inC<strong>are</strong>y Island. Humble as itmay seem, the crustaceanmanaged to poke thecuriosity of each member ofthe Brigade who was eagerto learn more about themangrove ecosystem’snative.Although all Brigademembers reside on theisland, some had never seenthe crustacean before. It hasa bit of resemblance to thelobster but it definitely doesnot offer the same taste as <strong>are</strong>gular lobster. The mudlobsters <strong>are</strong> found rathereasily in mangrove forests inMalaysia, though they <strong>are</strong>more likely to be treated aspests rather than a source offood.On hand to teach thestudents on thecharacteristics, the habitsand habitat of this creaturewas Mr. Moh, a PhD studentfrom Universiti Malaya, whois currently writing his thesison mud lobsters.His enthusiasm towards thesubject had seeminglybrushed on the Brigademembers who were evidentlycurious to know about thecontents of the two plasticcontainers that he brought into the classroom. The plasticcontainers that Moh broughtespecially for the viewing ofthe children actuallycontained mud lobsterswhich had already beencleaned.The children were told thatwhile mud lobsters <strong>are</strong> animportant part of themangrove ecosystem, theywere also regarded as pestsdue to their burrowing habit.The tunnels that theyburrowed in the bundsaround C<strong>are</strong>y Island hadknown to have cost thecompany a whopping amountof between RM1 and 1.5million in maintenance cost.Universiti Malaya which iscollaborating with R&DCentre in the C<strong>are</strong>y IslandBiodiversity Project came upwith a proposed solution touse biological measures tocontrol the damaging effectsof the mud lobsters’ activitiesto the bunds by plantingvertiver and cynodon grass.After a rather lengthy lectureabout the maincharacteristics, habitat andtaxonomy of the creature,the Brigade members wereall smiles when Moh askedthe class to gather round toview and also to hold the twolive specimens he brought inthe plastic containers.Having heard the lengthybriefing and seen thespecimens, the children werelater taken to the mangrove<strong>are</strong>a where traps had earlierbeen placed to catch mudlobster. The idea was to showthem what mud lobsters looklike in the wild and they werenot disappointed when fourmud lobsters were caughtfrom a dozen or so traps setby Moh and his team.Moh showing off a freshly caught mud lobster to the excited children.Bapak Moh memperlihatkan udang laut lumpur yang baru ditangkap kepada anak-anakyang terlihat sangat gembira.40.Seedlink July - October, 2009
Up Close & Personal With the Mud Lobster. Their burrows <strong>are</strong> U-shaped and can be up to 2m deep even below thewaterline. During the day, mud lobsters plug up their entrance withmud. In the evening, these <strong>are</strong> opened and the mud lobsters mayemerge. Mud lobsters prefer to dig in intertidal and subtidal regions. Mud lobsters <strong>are</strong> believed to eat tinyorganic titbits in mud. To get enoughnutrition, they have to process hugeamounts of mud and sand. Processedmud is piled around their burrows as theyeat-and-dig through the mud. Theirmounds can reach 3m high.. Size: up to 30cm, Indo-WestPacific, common but r<strong>are</strong>ly seen.. These modest, shy creatures<strong>are</strong> responsible for the strangevolcano-shaped mounds. Mud lobsters feed on organicmatter in the mud, and for thisreason, they <strong>are</strong> not popular asfood although they <strong>are</strong> eaten.source: www.naturia.comwww.mangrove.nus.edu.com. The huge mounds (which may be up to 3 m in height) <strong>are</strong> also key habitats formany animals (e.g., the ant Odontomachus malignus, the Tree-climbing crabEpisesarma singaporense, the Mangrove mud shrimp Wolffogebia phuketensis, thespider Idioctis littoralis, the file snake Acrochordus granulatus).Brigade TanamanBakau: MengenalUdang Laut LumpurMahluk dengan wajah sederhanatersebut biasanya disebutsebagai udang laut lumpurmerupakan tema mata pelajarandalam kelas yang terakhir bagiBrigade Tanaman Bakau pada tanggal29 Juli 2009. Pelajaran mengenaimahluk tersebut dilaksanakan diPusat Penelitian Bakau di Pulau C<strong>are</strong>y.Tampak sederhana, namun jeniskerang-kerangan tersebut dapatmendorong keingintahuan setiapanggota Brigade yang terlihat sangattertarik untuk mempelajari lebih jauhmengenai ekosistim tanaman bakauyang asli.Walaupun semua anggota Brigadetinggal di pulau tersebut, namun adabeberapa yang belum pernah melihatkerang seumur hidupnya. Terdapatsedikit persamaan antara udang lautbiasa dengan udang laut lumpur,namun keduanya tidak mempunyairasa yang sama. Udang laut lumpurmudah ditemukan di hutan bakau diMalaysia, namun mereka lebihdianggap sebagai hama daripadasumber makanan.Bapak Moh, seorang pelajar PhDdari Universiti Malaya, yang saat inisedang menulis tesis tentang udangLaut Lumpur secara langsungmengajar para pelajar mengenaisifat-sifat, kebiasaan-kebiasaaandan habitat dari mahluk tersebut.Ketertarikan Bapak Moh terhadapmahluk tersebut menyebabkankeingintahuan para anggota Brigadetentang isi dari dua wadah plastikyang dibawa oleh Bp. Moh ke dalamkelas. Wadah plastik yang dibawaoleh Bapak Moh tersebut yangdikhususkan untuk dilihat olehanak-anak sebenarnya berisi udanglaut lumpur yang telah dibersihkan.Anak-anak diberikan penjelasanbahwa udang laut lumpurmerupakan bagian penting dariekosistim tanaman bakau, namunudang laut tersebut juga dianggapsebagai hama k<strong>are</strong>na kebiasaannyamenggali lubang. Lorong-lorongyang digali pada gundukan tersebutmenimbulkan pengeluaran biayaperusahaan yang sangat besar yaituRM 1 juta sampai dengan RM 1,5juta untuk biaya pemeliharaan.Universiti Malaya bekerjasamadengan Pusat Penelitian danPengembangan pada ProyekBiodiversiti Pulau C<strong>are</strong>y telahmengajukan usulan mengenaipenyelesaian masalah tersebutdengan menggunakan langkahlangkahbiologis yang tujuannyauntuk membatasi dampakkerusakan akibat kegiatanpenggalian oleh udang laut lumpurtersebut pada gundukan-gundukandengan cara menanam rumputvertiver dan cynodon.Setelah penjelasan yang agakpanjang mengenai sifat-sifat ,habitat dan taxonomi mahluktersebut, para anggota Brigadesemua tersenyum ketika Bapak Mohmeminta para pelajar untukberkumpul untuk melihat dan jugamemegang dua contoh udang lautlumpur hidup yang dibawa didalamwadah plastik.Setelah mendengarkan penjelasanyang cukup panjang dan melihatcontoh mahluk tersebut anak-anakdibawa ke kawasan hutan bakaudimana perangkap telah dipasanguntuk menangkap udang lautlumpur yang tujuannya adalahuntuk memperlihatkan kepadamereka bagaimana bentuk udanglaut lumpur di tempatnya. Paraanggota Brigade juga tidak merasakecewa apabila hanya empat udanglaut lumpur yang terperangkap daridua belas perangkap yang telahdipasang oleh Bapak Moh besertatimnya.ROLE IN THE HABITATAn Important Part of the Mangrove EcosystemMud lobster digging helps the mangrove community by recycling material from deep in the mud, loosening the mud and allowing air and oxygenated water to penetrate the otherwiseoxygen-poor soil. This facilitates the growth of mangrove seedlings. Experiments show that seedlings of the Nipah Palm (Nypa fruiticans), Bruguiera and Ceriops grow more quickly onmud lobster-processed soil. Other plants found commonly growing on the mounds include Sea Holly (Acanthus spp.) and Blind Your Eye (Exoecaria algallocha).source: www.naturia.com41.Seedlink July - October, 2009