Research Article

The life table of the lucerne beetle, Gonioctena fornicata (Brüggem) (=Phytodecta fornicatus Brüggem) (Coleoptera, Chrysomelidae) on alfalfa under laboratory conditions

Volume: 38 Number: 1 February 1, 2014
  • Davut Efe
  • Mehmet Salih Özgökçe
EN TR

The life table of the lucerne beetle, Gonioctena fornicata (Brüggem) (=Phytodecta fornicatus Brüggem) (Coleoptera, Chrysomelidae) on alfalfa under laboratory conditions

Abstract

In this study, the life table of Gonioctena fornicata (Brügg.) was constructed at 25±1 ºC constant temperature, 60±5% relative humidity and 16:8 light:dark period in a climate cabinet. Life table parameters were calculated using the Euler-Lotka iteration method and their values were: Intrinsic rate of increase (rm), 0.015; Net reproductive rate (Ro), 180.25 females/female; Mean generation time (To), 353.03 days; Gross reproductive rate (GRR), 287.93 females/female; Doubling time, (T2) 47.11 days and Finite rate of increase (λ), 1.02 females/female. The fecundity rate was fitted in the Enkegaard equation and parameters were calculated as a = 0.886±0.055 ; b = 0.052±0.002. Mean development times for both sexes were: egg, 5.07, 2.85 days; larvae1, 2.83, 2.72 days; larvae2, 2.10, 2.36 days; larvae3, 2.15, 2.29 days; larvae4, 4.46, 4.29 days; pupae, 7.92, 7.69 days; total development time, 24.40, 24.32 days for females and males, respectively. Additionally, preoviposition, oviposition, postoviposition and generation times were 305.53, 32.73, 30.07 and 331.60 days, respectively. Life span of females was 366.07 days and it was 371.7 days for males. The best survivership curve was fitted to the Weibull distribution; its shape was defined as a Type I survivorship pattern and the calculated parameters were: b = 382.14±0.429 and c = 11.34±0.231

Keywords

References

  1. Apostolov, I., 1988. Spatial distribution of the lucerne leaf- betle (Phytodectafornicata Brüggm.) and the lucerne weevil (Phytonomus variabilis Hrbst.) and schemes for determining their density. Rasteniev dni Nauki, 25 (4), 93-101.
  2. Aslan, İ., B. Gruev, & H. Özbek, 2003. A preliminary review of the subfamiliy Chrysomelinae (Coleoptera, Chrysomelidae) of Turkey. Linzer Biol. Beitr.35(1), 581-605. 10

Details

Primary Language

English

Subjects

-

Journal Section

Research Article

Authors

Davut Efe This is me

Mehmet Salih Özgökçe This is me

Publication Date

February 1, 2014

Submission Date

January 26, 2015

Acceptance Date

-

Published in Issue

Year 2014 Volume: 38 Number: 1

APA
Efe, D., & Özgökçe, M. S. (2014). The life table of the lucerne beetle, Gonioctena fornicata (Brüggem) (=Phytodecta fornicatus Brüggem) (Coleoptera, Chrysomelidae) on alfalfa under laboratory conditions. Turkish Journal of Entomology, 38(1), 3-10. https://doi.org/10.16970/ted.74888

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