
PARAMETER KEHIDUPAN DAN DEMOGRAFI KEPIK, Diconocoris hewetti (Dist.) (HEMIPTERA: TINGIDAE) PADA DUA VARIETAS LADA
Author(s) -
I WAYAN LABA,
Aunu Rauf,
Utomo Kartosuwondo,
M. SOEHARDJAN M. SOEHARDJAN
Publication year - 2020
Publication title -
jurnal penelitian tanaman industri (industrial crops research journal)/jurnal penelitian tanaman industri
Language(s) - English
Resource type - Journals
eISSN - 2528-6870
pISSN - 0853-8212
DOI - 10.21082/jlittri.v12n3.2006.121-127
Subject(s) - physics , theology , philosophy
ABSTRAK Kepik renda lada (KRL), Diconocoris hewetti (Dist.) (Hemiptera: Tingidae) adalah salah satu hama pada pertanaman lada di Indonesia. Penelitian bertujuan untuk membandingkan berbagai parameter kehidupan dan demografi KRL pada dua varietas lada. Pengaruh varietas lada terhadap parameter kehidupan dan demografi KRL diteliti di rumah kasa dan pertanaman lada di Pulau Bangka, sejak Oktober 2003 hingga Februari 2004. Penelitian mencakup pengaruh varietas Chunuk dan LDL terhadap masa perkembangan telur dan nimfa, lama hidup imago jantan dan betina, serta keperidian. Selain itu juga diteliti pengaruh fase bunga, pucuk daun, dan buah muda terhadap lama hidup imago. Pengaruh varietas terhadap berbagai parameter demografi KRL dipelajari dengan memelihara kepik dari sejak telur hingga imago yang muncul meletakkan telur kembali. Hasil penelitian menunjukkan bahwa perbedaan varietas mempengaruhi berbagai parameter kehidupan KRL. Lama perkembangan nimfa 17,3 dan 13,0 hari, lama hidup imago jantan 10,2 dan 18,8 hari, lama hidup imago betina 13,6 dan 16,9 hari, keperidian 13,9 dan 24,5 butir, berturut-turut pada varietas Chunuk dan LDL. Imago KRL hidup lebih lama pada bunga fase-3 dibandingkan pada bunga fase-1 atau-2. Laju pertambahan intrinsik (r) 0,0741 dan 0,0827; laju reproduksi bersih (Ro) 6,98 dan 8,52, masa generasi (T) 26,21 dan 25,91; laju pertambahan terbatas (λ) 1,0769 dan 1,0862 berturut-turut pada varietas Chunuk dan LDL. Secara keseluruhan, varietas LDL lebih mendukung kehidupan dan perkembangan populasi D. hewetti. Jika tidak tersedia bunga lada KRL mampu bertahan hidup dengan mengisap pucuk daun dan buah muda. Lama hidup imago 12,1 hari dan 23,5 hari pada buah muda. Implikasi dari hasil penelitian ini adalah informasi dasar dalam penelitian untuk pengendalian KRL. Kata kunci: Lada, Piper nigrum L., hama, kepik renda lada, Diconocoris hewetti, parameter kehidupan, demografi, Propinsi Bangka Belitung ABSTRACT Life parameters and demographic of bug peper lace Diconocoris hewetti (Dist.) (Hemiptera: Tingidae) on two pepper varieties Pepper lace bug (PLB), Diconocoris hewetti (Dist.) (Hemiptera: Tingidae), is one of the insect pests attacking pepper in Indonesia. Research was conducted with the objective to compare various life history and demographic parameters of PLB on two pepper varieties. The effect of two pepper varieties on various life parameters and demographic of PLB was conducted in green house and farmer field on Bangka Island, since October 2003 to February 2004. The experiment covered the effect of LDL and Chunuk varieties on eggs and nymphal development, male and female adults longivity and fecundity. Besides the effect of development stage on inflorescence, shoots and young berries to adults longivity were observed. The effect of varieties to demographic parameters of PLB was studied by rearing the bugs since egg to adult laid eggs. The result revealed that difference variety was influenced life history and demographic parameters of PLB. Nymphal development time of PLB were 17.3 and 13.0 days, male adult longivity 10.2 and 18.8 days, female adult longivity 13.6 and 16.9 days, fecundity 13.9 and 24.5 eggs per female, respectively on Chunuk and LDL. The life history of PLB adult was longer on stage-3 inflorescences than stage-1 or stage-2. The intrinsic rates of increase (r) were 0.0741 and 0.0827, net reproductive rate (Ro) 6.98 and 8.52, mean generation time (T) 26.21 and 25.91 days, finite rate of increase (λ) 1.0769 and 1.0862 on Chunuk and LDL respectively.Generally, variety LDL was much better food source for the development of D. hewetti. If there were no inflorescences available, the PLB was able to survive by feeding on shoots or young berries. Adult longivity was 12.1 days on shoots and 23.5 days on young berries. The implication of this research is as the basic information in the next research for PLB control. Key words : Pepper, Piper nigrum L., pest, lace bug, Diconocoris hewetti, life parameters, demographic, Bangka Belitung Province