Biologi dan Perilaku Kawin Sycanus annulicornis Dohrn. (Hemiptera: Reduvidae) yang diberi Pakan Larva Tenebrio molitor L. (Coleoptera: Tenebrionidae)
Abstract: Sycanus annulicornis
Dohrn. is an important predatory insect in controlling plant pests especially
in soybean and rice plants. These predatory insects have a wide range of prey,
especially of the order Lepidoptera. This study aimed to evaluate the growth
and development of S. annulicoris fed on Tenebrio molitor L. larvae, as well as
to study the mating behaviour. Growth and development of S. annulicornis reared
in the laboratory were evaluated by observing the egg incubation period,
fecundity, fertility, development stage and number of nymphs, nymphal
mortality, sex ratio, longevity of adult insects, and the life cycles. The results
showed that the egg incubation period of S. annulicornis was 15–19 days.
Females laid eggs 6–9 days as much as
1–4 days after copulation egg groups containing an average of 81 ± 40 eggs for
each group of eggs. The average time of the development of 1st, 2nd, 3rd, 4th,
and 5th instar, respectively, were 16.6 ± 1.5; 15.1 ± 2.5; 12.0 ± 2.9; 12.4 ±
2.3; and 19.8 ± 2.1 days, with the sex ratio of male : female was 3 : 4. The
nymphal mortality only was observed on 1st and 2nd instar with the precentage,
respectively, were 35.2 ± 6.5% and 1.2 ± 1.6%. The mean longevity for female
and male adults was 48 ± 6 and 39 ± 5 days, respectively. The life cycle of S.
annulicornis for male and female were 141 ± 7 and 127 ± 8 days, respectively.
Mating behaviours observed on these species comprised arousal and approach (5.2
± 3.4 min), riding over (5.8 ± 2.7 sec), copulation (14.8 ± 3.2 min), and
post-copulation (149.6 ± 188.3 min). Post-copulatory cannibalism was not
observed in this species.
Penulis: Abdul Sahid, Wahyu
Daradjat Natawigena, Hersanti, Sudarjat, Entun Santosa
Kode Jurnal: jpbiologidd160247
