Pre-courtship behavior and the effect of age on its duration in Diatraea magnifactella (Lepidoptera: Crambidae)
Keywords:
stem borer, Saccharum officinarum, chemical interaction, sex gland, pheromoneAbstract
To understand the chemical interaction of Diatraea magnifactella Dyar (Lepidoptera: Crambidae) with its conspecifics, the aim of the present paper was to describe and determine the effect of age on the duration of pre-courtship behavior in the female of D. magnifactella. To do so, we established a colony of D. magnifactella in the laboratory and placed 60 newly emerged females individually in 15 15 cm (height × width) acrylic cases. Then, we observed the behavior and effect of age on the duration of pre-courtship in the females for 11 d. The pre-courtship behavior of D. magnifactella was described based on the pre-courtship behavior of Diatraea considerata Heinrich, whereas the relationship between the duration of the pre-courtship behavior and the age of the female was determined through a non-linear regression analysis. The pre-courtship behavior of D. magnifactella females began with the separation of the wings from the body and the rhythmic movement of the antennae. After this, the female rotated its body on the surface where it was located, flexed its body, and exposed its sex gland. Pre-courtship started 6 h after the onset of darkness. It lasted longest on days 3 to 6 after it began. The duration decreased from day 5 until it ended on day 10. This pattern indicated that the age of the female plays a negative role in the duration of the pre-courtship activity in D. magnifactella.
Resumen
Con la finalidad entender la interacción química de Diatraea magnifactella Dyar (Lepidoptera: Crambidae) con sus congéneres, el presente trabajo tuvo como objetivo describir y determinar el efecto de la edad en la duración del precortejo de la hembra de D. magnifactella. Para ello, en el laboratorio se estableció una cría de D. magnifactella. Enseguida, 60 hembras de cero días de edad fueron confinadas de manera individual en cajas de acrílico de 15 cm x 15 cm (altura y anchura). Posteriormente, la conducta y el efecto de la edad en la duración del precortejo de las hembras fue observada por 11 días. La conducta de precortejo de D. magnifactella fue descrita con base en el precortejo de D. cosiderata Heinrich. Mientras que, la relación entre la duración de la conducta de precortejo y la edad de la hembra fue determinada a través de un análisis de regresión no lineal. La conducta de precortejo de las hembras de D. magnifactella inicio con la separación de las alas del cuerpo y el movimiento rítmico de las antenas. Enseguida, la hembra giró el cuerpo sobre la superficie donde se encontraba situada, flexionó el abdomen y expuso la glándula sexual. El precortejo ocurrió seis horas después de comenzar la fase oscura. Este tuvo una mayor duración tres días después del inicio. Posteriormente, la duración comenzó a disminuir hasta finalizar en el día 10. Lo anterior indicó que la edad de la hembra participa de manera negativa en la duración de la actividad de precortejo de D. magnifactella.
Downloads
Additional Files
- Routes and probabilities of the transition between successful sequences of pre courtship in the D. magnifactella (p<0.05, n=60). The values indicate the probability of the occurrence of the next act.
- Position of the female at the beginning of pre-courtship (a). Flexing of the abdomen and exposure of the sex gland of D. magnifactella (b).
- Analysis of the effect of age on the duration of pre-courtship in D. magnifactella females.
Published
Issue
Section
License
Copyright for any article published in Florida Entomologist is held by the author(s) of the article. Florida Entomologist is an open access journal. Florida Entomologist follows terms of the Creative Commons, Attribution Non-Commercial License (cc by-nc). By submitting and publishing articles in Florida Entomologist, authors grant the FOJ and Florida Entomologist's host institutions permission to make the article available through Internet posting and electronic dissemination, and to otherwise archive the information contained both electronically and in a hard printed version. When used, information and images obtained from articles must be referenced and cited appropriately. Articles may be reproduced for personal, educational, or archival purposes, or any non-commercial use. Permission should be sought from the author(s) for multiple, non-commercial reproduction. Written permission from the author(s) is required for any commercial reproduction.