Master students

- Baldellou, Maria-Isabel. Project: Consequences of chemical allatectomy indiced by precocenes in Oxycarenus lavaterae (F.). Supervisor: Xavier Belles. Finished in 1983.
- Piulachs, Maria-Dolors. Project: Studies on the sterilizing activity of precocenes in Blattella germanica. Supervisor: Xavier Belles. Finished in 1984.
- Fabrias, Marta. Project: Activity of precocene derivatives with antagonistic action on juvenile hormone in Spodoptera littoralis. Supervisor: Xavier Belles. Finished in 1987.
- Benito, Blanca. Project: Morphological and functional studies on the ovary of Blattella germanica (L.) (Dictyoptera, Blattellidae). Supervisor: Xavier Belles. Finished in 1988.
- Pascual, Nuria. Project: Activity of azadirachtin and other antagonists of molting hormones in Tenebrio molitor L. (Col. Tenebrionidae) and Spodoptera littoralis Boisduval (Lep. Noctuidae). Supervisor: Xavier Belles. Finished in 1989.
- Pastor, Maria-Dolors. Biogenic amines and reproduction in the dictiopteran Blattella germanica (L.). Supervisor: Xavier Belles. Finished in 1989.
- García-Alonso, Monica. Project: Comparative study of the reproductive capabilities of Blatta orientalis L. and Blattella germanica (L.). Supervisor: Xavier Belles. Finished in 1992.
- Romañá, Isabel. Project: Origin and circulating levels of ecdysteroids in the female of Blattella germanica (L.) (Dictyoptera, Blattellidae) during the first reproductive cycle. Supervisor: Xavier Belles. Finished in 1993.
- Vilaplana, Lluisa. Project: Development and endocrinology of the conglobate gland in Blattella germanica (L.) (Dictyoptera, Blattellidae). Supervisor: Xavier Belles. Finished in 1995.
- Feliubadalo, Esther. Project: Study of the spermatophore of Blattella germanica (L.) (Dictyoptera, Blattellidae). Supervisor: Xavier Belles. Finished in 1995.
- Osorio, Sergio. Project: Relatinships between nutrition and reproduction in Blattella germanica (L.) (Dictyoptera, Blattellidae). Supervisor: Xavier Belles. Finished in 1996.
- Perendreu, Eva. Project: Modulation of the olfactive perception in Blattella germanica (L.) (Dictyoptera, Blattellidae). Supervisor: Xavier Belles. Finished in 1997.
- Alba Herraiz Yebes. UPF Master. 2009-2010. Supervisor: Xavier Belles. Finished in 2010.
- Jelle Caers. UPF Master. 2009-2010. Supervisor: Xavier Belles. Finished in 2010.
- Alejandro Alfaro. UPF Master. 2010-2011. Supervisor: Xavier Belles. Finished in 2011.
- Ylla, Guillem. Master Universitat de Vic. 2013-2014. Project : Study of tergal glands morphogenesis through an integrative analysis of genomic data. Finished in 2014.
- Alvarez, Niuska. Master Universitat Autonoma de Barcelona. 2020-2021. Project: The role of the gene apterous in wing development of Blattella germanica. Finished in 2021

PhD students

- Piulachs, Maria-Dolors. Thesis: Biological activity of juvenile hormone antagonist compounds in Blattella germanica. Supervisor: Xavier Belles. University of Barcelona. Finished in 1987.
- Maestro, Jose-Luis. Thesis: Mechanisms regulating juvenile hormone production in Blattella germanica (L.) (Dictyoptera, Blattellidae). Supervisors: Xavier Belles and Maria-Dolors Piulachs. University of Barcelona. Finished in 1994.
- Pascual, Nuria. Thesis: Ecdysteroid hormones and reproduction in Blattella germanica. Supervisor: Xavier Belles. University of Barcelona. Finished in 1995.
- Izquierdo, Isaac. Thesis: Strategies of adaptation to cave environment in the species of the genus Loboptera Brunner W. (Blattaria, Blattellidae) in Canary Islands. Supervisors: Pere Oromi and Xavier Belles. Universidad de La Laguna. Finished in 1997.
- Vilaplana, Lluisa. Thesis: Allatostatins and reproducction in Blattella germanica (L.) (Dictyoptera, Blattellidae). Supervisors: Xavier Belles and Maria-Dolors Piulachs. University of Barcelona. Finished in 1998.
- Comas, Daniel. Thesis: Regulation of the expresión of the vitellogenin gene in Blattella germanica (L.) (Dictyoptera, Blattellidae). University of Barcelona. Supervisor: Xavier Belles. Finished in 2000.
- Zapata, Rafael. Thesis: HMGCoA reductase and reproduction in Blattella germanica (L.) (Dictyoptera, Blattellidae). Supervisor: Xavier Belles. University of Barcelona. Finished in 2002.
- Aguilar, Ruth. Thesis: Peptides regulating food intake in Blattella germanica (L.) (Dictyoptera, Blattellidae). Supervisors: Xavier Belles and Jose-Luis Maestro. University of Barcelona. Finished in 2003.
- Cruz, Josefa. Thesis: Nuclear receptors involved in the endocrine regulation in Blattella germanica (L.) (Dictyoptera, Blattellidae). Charaterization of the genes BgEcR-A, BgHR3 y BgFTZ-F1. Supervisors: Xavier Belles and David Martin. University of Barcelona. Finished in 2006.
- Mañé-Padros, Daniel. Thesis: Molecular mechanisms of ecdysteroid action in the hemimetabolan insect Blattella germanica (L.) (Dictyoptera, Blattellidae). Charateritzation of the nuclar receptors BgE75 and BgHR4. Supervisors: David Martin and Xavier Belles. University of Barcelona. Finished in 2007.
- Ciudad, Laura. Thesis: Mechanisms regulating the ovarian maduration in Blattella germanica (L.) (Dictyoptera, Blattellidae). Supervisors: Maria-Dolors Piulachs and Xavier Belles. University of Barcelona. Finished in December 2008, presented in January 2009.
- Irles, Paula. Thesis: Molecular basis of the oogenesis in the cockroach Blattella germanica (L.) (Dictyoptera, Blattellidae). Supervisor: Maria-Dolors Piulachs. University of Barcelona. Finished and presented in February 2010.
- Borràs, Ferran. Thesis: Caracterització dels factors de transcripció E74 i Seven Up en el desenvolupament de l insecte Blattella germanica (L.) (Dictyoptera, Blattellidae). Supervisors: Xavier Belles and David Martin. University of Barcelona. Finished in 2011.
- Huang, Jia-Hsin. Thesis: Functional roles of hypertrehalosemic hormone related to reproduction and antioxidative stress responses in the German cockroach Blattella germanica (L.). Supervisor: How-Jing Lee. National Taiwan University. 1 year stage in Belles lab. In Barcelona.
- Rubio, Mercedes. Thesis: microRNAs and metamorphosis in the hemimetabolous insect Blattella germanica (L.) (Dictyoptera, Blattellidae). Universitat Pompeu Fabra. Supervisor: Xavier Belles. Finished and presented in 2012.
- Herraiz, Alba. Thesis: Molecular analysis of ovarian resorption induced by hydric stress in Blattella germanica. Universitat Pompeu Fabra. Supervisors: Xavier Belles and Maria-Dolors Piulachs. Finished and presented in 2013.
- Lozano, Jesus. Thesis: Mecanisme d acció de l Hormona Juvenil en la metamorfosi dels insectes. Supervisor: Xavier Belles. University of Barcelona. Finished and presented in 2014.
- Nahdi, Mahboubeh. Thesis: Molecular signalling in vitellogenesis in Blattella germanica. Supervisors: Ali Bandani and Xavier Belles. University of Tehran. Finished and presented in 2016.
- Ylla, Guillem. Thesis: Comparative transcriptomics of hemimetabolan and holometabolan metamorphosis. Supervisor: Xavier Belles. Universitat Pompeu Fabra. Finished and presented in 2017.
- Fernandez, Ana. Thesis: Factors associated to juvenile hormone signalling during embryonic and postembryonic development in the cockroach Blattella germanica. Supervisor: Xavier Belles. Universitat Pompeu Fabra. Finished and presented in 2017.
- Kamsoi, Orathai. Thesis: Factors regulating metamorphosis in hemimetabolan insects. Supervisor: Xavier Belles. Universitat Pompeu Fabra. Finished and presented in 2020.
- Ventos Alfonso, Alba. Thesis: Factors determining the adult body plan in the hemimetabolan embryogenesis. Supervisor: Xavier Belles. Universitat Pompeu Fabra. Finished and presented in 2021

Post-docs