?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=AKTIVITAS+EKSTRAK++ETANOL+RUMPUT++LAUT++Gracilaria+sp.+SEBAGAI+BIOLARVASIDA+TERHADAP+LARVA+NYAMUK+DEMAM+BERDARAH+DENGUE+(Aedes+aegypti)++&rft.creator=SYIFA+FARIHAH++%2C+NUFUS&rft.subject=570+Biologi&rft.description=Rumput++laut++memiliki++manfaat++ekologis++dalam++lingkungan++serta++dapat++berperan+sebagai++biolarvasida++untuk++pengendalian++larva++nyamuk++Aedes++aegypti++penyebab+penyakit++demam++berdarah++dengue++(DBD)%2C++mengingat++terjadinya++peningkatan++kasus+DBD++di++Lampung++selama++tahun.++Biolarvasida++yang++terbuat++dari++bahan++alami++lebih+aman+digunakan++dan++ramah+lingkungan.+Salah+satu+rumput+laut+yang+dapat+dijadikan+sebagai+bahan+komponen+pembuatan+biolarvasida+adalah+rumput+laut++Gracilaria+sp.+Penelitian+ini+bertujuan+untuk+membuktikan+kandungan+senyawa+aktif+yang+terkandung+dalam+rumput+laut+Gracilaria+sp.%2C+mengeksplorasi+aktivitas++ekstrak+etanol+rumput+laut+Gracilaria++sp.++terhadap++larva++nyamuk++Aedes++aegypti++dan++mengetahui++nilai++Lethal+Concentration++(LC50)++dan++Lethal++Time++(LT50)++rumput++laut++Gracilaria++sp.++sebagai+biolarvasida.+Penelitian+ini+menggunakan+Rancangan+Acak+Lengkap+(RAL)+dengan++5+perlakuan+dan+4+kali+ulangan.+Tiap+unit+ulangan+terdiri+dari+20+ekor+larva+Aedes+aegypti+kemudian+diberikan+ekstrak+etanol+rumput+laut+Gracilaria+sp.+dengan+konsentrasi++4%2C+4.5%25%2C++5%25%2C++5.5%25++dan++6%25.++Kontrol++positif++dengan++Abate++dan++kontrol+negatif+dengan+air++sumur.++Pengamatan++dilakukan++selama++6%2C++12%2C++24%2C++48%2C++hingga++72++jam++dengan+menghitung++jumlah+kematian+larva.+Data++jumlah+kematian+larva++yang+telah+diperoleh+tiap+konsentrasi+dianalisis+menggunakan+analisa++probit++Lethal+Concentration++(LC50)+dan+Lethal+Time++(LT50)+untuk+mengetahui+konsentrasi+efektif++ekstrak++etanol+rumput+laut+Gracilaria+sp.+dalam+membunuh+50%25+larva+nyamuk++Aedes+aegypti.+Kesimpulan+dari++penelitian++ini%2C++ekstrak++etanol++Gracilaria++sp.++memiliki++senyawa++aktif++seperti+flavonoid%2C++terpenoid%2C++saponin%2C++tanin++dan++steroid++sehingga++berpotensi++sebagai+biolarvasida+karena+bersifat+toksik+dapat+membunuh+larva.+Konsentrasi+efektif+sebagai+nilai+Lethal+Concentration+(LC50)+dan++Lethal+Time+(LT50)+yang+dapat+membunuh+50%25+larva++Aedes++aegypti++pada++penelitian++ini++adalah++3.44%25++dan++waktu++efektif++yang+dibutuhkan+untuk+membunuh+50%25+larva+adalah+8+jam.+%0D%0AKata+Kunci%3A+Aedes+aegypt%2C++Biolarvasida%2C+DBD%2C+Gracilaria+sp.+%0D%0A%0D%0A%0D%0A+Seaweed+has+ecological+benefits+in+the+environment+and+can+act+as+a+biolarvicide+to+control+Aedes+aegypti+mosquito+larvae+that+cause+dengue+fever+(DBD)%2C+considering+the+increase++in++DBD++cases++in++Lampung++during++2024.++Biolarvicide++made++from++natural+ingredients+is+safer+to+use+and+environmentally+friendly.+One+of+the+seaweeds+that+can+be+used+as+a+component+of+biolarvicide+is+Gracilaria+sp.+seaweed.+This+study+aims+to+prove+the+content+of+active+compounds+contained+in+Gracilaria+sp.+seaweed%2C+explore+the+activity+of+ethanol+extract+of+Gracilaria+sp.+seaweed+on+Aedes+aegypti+mosquito+larvae+and+determine+the+Lethal+Concentration+(LC50)+and+Lethal+Time+(LT50)+values+of+Gracilaria+sp.+seaweed+as+a+biolarvicide.+This+study+used+a+Completely+Randomized+Design+(CRD)+with+5+treatments+and+4+replications.+Each+replication+unit+consisted+of+20++Aedes++aegypti++larvae++then++given++ethanol++extract++of++Gracilaria++sp.++seaweed.++with+concentrations+of+4%2C+4.5%25%2C+5%25%2C+5.5%25+and+6%25.+Positive+control+with+Abate+and+negative+control++with++well++water.++Observations++were++made++for++6%2C++12%2C++24%2C++48%2C++to++72++hours++by+calculating+the+number+of+larval+deaths.+Data+on+the+number+of+larval+deaths+obtained+for++each++concentration++were++analyzed++using++probit++analysis++Lethal++Concentration+(LC50)++and++Lethal++Time++(LT50)++to++determine++the++effective++concentration++of++ethanol+extract++of++Gracilaria++sp.++seaweed++in++killing++50%25++of++Aedes++aegypti++mosquito++larvae.+The++LC50++value++in++this++study++was++3.44%25++and++the++LT50++value++was++8++hours.++The+conclusion+of+this+study%2C+the+ethanol+extract+of+Gracilaria+sp.+has+active+compounds+such+as+flavonoids%2C+terpenoids%2C+saponins%2C+tannins+and+steroids+so+that+it+has+the+potential+as+a+biolarvicide+because+it+is+toxic+and+can+kill+larvae.+The+effective+concentration+that+can+kill+50%25+of+Aedes+aegypti+larvae+in+this+study+was+3.44%25+and+the+effective+time+needed+to+kill+50%25+of+larvae+was+8+hours.+%0D%0AKata+Kunci%3A+Aedes+aegypt%2C++Biolarvicide%2C+DBD%2C+Gracilaria+sp.+&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM&rft.date=2025-03-20&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F86086%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F86086%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2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