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Pheromone emission patterns and courtship sequences across distinct populations within Anastrepha fraterculus (Diptera-Tephritidae) cryptic species complex

Published online by Cambridge University Press:  29 November 2018

A.K.P. Roriz*
Affiliation:
Universidade Federal da Bahia, Instituto de Biologia, Barão do Jeremoabo s/n, Campus Universitário de Ondina, 40170-290, Salvador, BA, Brazil
H.F. Japyassú
Affiliation:
Universidade Federal da Bahia, Instituto de Biologia, Barão do Jeremoabo s/n, Campus Universitário de Ondina, 40170-290, Salvador, BA, Brazil National Institute of Science and Technology on Interdisciplinary and Transdisciplinary Studies in Ecology and Evolution, R. Barão do Jeremoabo s/n, Campus Universitário de Ondina, 40170-290, Salvador, BA, Brazil
C. Cáceres
Affiliation:
Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, POBox 100, Seibersdorf, Austria
M. Teresa Vera
Affiliation:
Cátedra Terapéutica Vegetal, Departamento de Sanidad Vegetal, Facultad de Agronomía y Zootecnia, UNT, Avenida Kirchner 1900 – (4000) San Miguel de Tucumán, Tucumán, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
I.S. Joachim-Bravo
Affiliation:
Universidade Federal da Bahia, Instituto de Biologia, Barão do Jeremoabo s/n, Campus Universitário de Ondina, 40170-290, Salvador, BA, Brazil
*
*Author for correspondence Phone: +55 71 32836545 Fax: +55 71 32836511 E-mail: kellyroriz@gmail.com

Abstract

Sexual behavioural isolation can result from sexual selection and represents a relevant factor associated with the speciation process. We analysed the pheromone emission pattern and the courtship of males of five different populations of the Anastrepha fraterculus cryptic complex: Brazil (Vacaria, Tucumán and Piracicaba), Colombia and Peru. The time of pheromone emission was recorded in each population every 30 min during the day. The behavioural sequences of courting were video recorded and analysed using EthoSeq software. Males from different populations have showed different period of pheromone emission – Vacaria, Piracicaba and Tucumán executed calling only during the morning, Colombia only in the afternoon and Peru during both periods. The general frequencies of the courtship units of the males were distinct among the populations. Three groups were formed in the classification from the function of 14 behavioural routines: Vacaria, Piracicaba and Tucumán formed a single group (Brazil-1), while Colombia and Peru formed two distinct groups. In the probabilistic trees generated, the behavioural units that most contributed to the occurrence of copulation were distinct among the three groups formed: Brazil-1 (Contact, Alignment and Arrowhead-1); Colombia (Flying, Mobile, Contact and Alignment); Peru (Flying, Arrowhead-1 and Calling). Our results indicated differences in sexual behaviour that may explain the behavioural isolation found between the distinct groups in addition with the temporal isolation found between the Brazil-1 and Colombia populations. The evolutionary implications for the A. fraterculus cryptic species complex are discussed.

Information

Type
Research Papers
Copyright
Copyright © Cambridge University Press 2018 

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