?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=UJI+EFEKTIVITAS+EKSTRAK+METANOL+RUMPUT+LAUT+(Gracilaria+sp.)+SEBAGAI+OVISIDA+NYAMUK+Aedes+aegypti+VEKTOR+DEMAM+BERDARAH+DENGUE+(DBD)+&rft.creator=DEVANKA+SALSABILA+%2C+SAVIRA+&rft.subject=570+Biologi&rft.description=+Demam++Berdarah++Dengue++(DBD)++disebabkan++oleh++virus++dengue++yang++ditularkan+melalui++gigitan++nyamuk++Ae.++aegypti++betina%2C++terus++meningkat++di++Indonesia.+Pengendalian++nyamuk++Ae.++aegypti++stadium++telur++menggunakan++ovisida++dapat+dilakukan+sebagai+alternatif+pengendalian+yang+lebih+optimal+karena+stadium+telur+sangat+rentan+terhadap+insektisida.+Tanaman+dengan+metabolit+sekunder+yang+dapat+merusak++telur++dapat++digunakan++sebagai++kandidat++ovisida++nyamuk++Ae.++aegypti.+Penelitian+ini+bertujuan+untuk+mengetahui+senyawa+aktif+yang+terdapat+pada+ekstrak+metanol++rumput++laut++(Gracilaria++sp.)++dan++menguji++efektivitasnya++sebagai++ovisida+nyamuk+Ae.+aegypti%2C+serta+mengetahui+nilai+Lethal+Consentration+(LC50).+Penelitian+ini+menggunakan+Rancangan+Acak+Lengkap+(RAL)+dengan+konsentrasi+1%25%2C+1%2C2%25%2C+1%2C4%25%2C++1%2C6%25%2C++kontrol++positif++(1%25++azadirachtin)%2C++dan++kontrol++negatif++(air++keran)+dengan+empat+kali+pengulangan+menggunakan+25+butir+telur+nyamuk++Ae.+aegypti.+Pengamatan+dilakukan+setiap+enam+jam+sekali+selama+72+jam+dengan+menghitung+jumlah+telur+nyamuk+Ae.+aegypti+yang+tidak+menetas.+Data+berupa+jumlah+telur+yang+tidak++menetas++pada++tiap++konsentrasi++dianalisis++dengan++one-way++ANOVA%2C++bila+terdapat++perbedaan++jumlah++telur++yang++tidak++menetas++antar++perlakuan++dilanjutkan+dengan+uji+Tukey+pada+taraf+signifikansi+sebesar+0%2C05.+Untuk+menentukan+nilai+LC50+dilakukan++uji++probit.++Hasil++uji++fitokimia++menunjukkan++bahwa++ekstrak++metanol+rumput++laut++(Gracilaria++sp.)++mengandung++senyawa++alkaloid%2C++flavonoid%2C++fenol%2C+steroid%2C++saponin%2C++dan++tanin.++Hasil++penelitian++ini++menunjukkan++adanya++perbedaan+jumlah++telur++yang++tidak++menetas++antar++perlakuan++(p%3D0%2C000).++Dapat++disimpulkan+bahwa+ekstrak+metanol+rumput+laut+(Gracilaria+sp.)+efektif+sebagai+ovisida+nyamuk+Ae.+aegypti+vektor+DBD+dengan+nilai+LC50+sebesar+1%2C69%25.%0D%0AKata+Kunci%3A+Demam+Berdarah+Dengue+(DBD)%2C++Ae.+aegypti%2C+Ovisida%2C+Gracilaria+sp.%2C+Ekstrak+Metanol+%0D%0A%0D%0ADengue+Hemorrhagic+Fever+(DHF)%2C+caused+by+the+dengue+virus+which+is+transmitted+through+the+bite+of+female+Ae.+aegypti+mosquitoes%2C+continues+to+increase+in+Indonesia.+Control+of+mosquitoes+Ae.+aegypti+egg+stage+using+ovicide+can+be+used++as++a++more+optimal+control+alternative+because+the+egg+stage+is+very+susceptible+to+insecticides.+Plants++containing++secondary++metabolites++that++can++damage++eggs++can++be++used++as+ovicide+candidates++for+the++Ae.+aegypti++mosquito.+This+research+aims+to+determine+the+active+compounds+contained+in+the+methanol+extract+of+seaweed+(Gracilaria+sp.)+and++test++its++effectiveness++as++an++ovicide++for++the++Ae.++aegypti++mosquito%2C++as++well++as+determine++the++Lethal++Concentration++(LC50)++value.++This++study++used++a++Completely+Randomized+Design+(CRD)+with+concentrations+of+1%25%2C+1.2%25%2C+1.4%25%2C+1.6%25%2C+positive+control++(1%25++azadirachtin)%2C++and++negative++control++(tap++water)++with++four++repetitions+using+25+Ae.+aegypti+mosquito+eggs.+Observations+were+made+every+six+hours+for+72+hours+by+counting+the+number+of+Ae.+aegypti+mosquito+eggs+that+did+not+hatch.+Data+in++the++form++of++the++number++of++eggs++that++did++not++hatch++at++each++concentration++were+analyzed+using+one-way+ANOVA%2C+if+there+was+a+difference+in+the+number+of+eggs+that++did++not++hatch++between++treatments%2C++it++was++continued++with++the++Tukey++test++at++a+significance+level+of+0.05.+To+determine+the+LC50++value%2C+a+probit+test+is+carried+out.+Phytochemical+test+results+show+that+the+methanol+extract+of+seaweed++(Gracilaria+sp.)++contains++alkaloids%2C++flavonoids%2C++phenols%2C++steroids%2C++saponins++and++tannins.++The+results+of+this+study+showed+a+difference+in+the+number+of+unhatched+eggs+between+treatments++(p+%3D+0.000).++It++can++be+concluded++that+the++methanol++extract++of+seaweed+(Gracilaria++sp.)++is++effective++as++an++ovicide++for++Ae.++aegypti++mosquitoes%2C++a++dengue+vector%2C+with+an+LC50++value+of+1.69%25.+%0D%0AKey+words%3A+Dengue+Hemorrhagic+Fever+(DHF)%2C+Ae.+aegypti%2C+ovicide%2C+Gracilaria+sp.%2C+Methanol+Extract+&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM&rft.date=2025-03-19&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F86083%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F86083%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F86083%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++DEVANKA+SALSABILA+%2C+SAVIRA+++(2025)+UJI+EFEKTIVITAS+EKSTRAK+METANOL+RUMPUT+LAUT+(Gracilaria+sp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