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      A tale of two leeches: Toward the understanding of the evolution and development of behavioral neural circuits.

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          Abstract

          In the animal kingdom, behavioral traits encompass a broad spectrum of biological phenotypes that have critical roles in adaptive evolution, but an EvoDevo approach has not been broadly used to study behavior evolution. Here, we propose that, by integrating two leech model systems, each of which has already attained some success in its respective field, it is possible to take on behavioral traits with an EvoDevo approach. We first identify the developmental changes that may theoretically lead to behavioral evolution and explain why an EvoDevo study of behavior is challenging. Next, we discuss the pros and cons of the two leech model species, Hirudo, a classic model for invertebrate neurobiology, and Helobdella, an emerging model for clitellate developmental biology, as models for behavioral EvoDevo research. Given the limitations of each leech system, neither is particularly strong for behavioral EvoDevo. However, the two leech systems are complementary in their technical accessibilities, and they do exhibit some behavioral similarities and differences. By studying them in parallel and together with additional leech species such as Haementeria, it is possible to explore the different levels of behavioral development and evolution.

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          Author and article information

          Journal
          Evol Dev
          Evolution & development
          Wiley
          1525-142X
          1520-541X
          Nov 2020
          : 22
          : 6
          Affiliations
          [1 ] Department of Life Science, National Taiwan University, Taipei, Taiwan.
          [2 ] Instituto de Fisiología Celular - Neurociencias, Universidad Nacional Autónoma de México, México City, México.
          [3 ] Department of Molecular and Cell Biology, University of California, Berkeley, California, USA.
          [4 ] Departamento de Fisiología Biología Molecular y Celular, Universidad de Buenos Aires, and IFIBYNE UBA-CONICET, Buenos Aires, Argentina.
          [5 ] Department of Neuroscience, Westminster College, Salt Lake City, Utah, USA.
          Article
          10.1111/ede.12358
          33226195
          4d01a695-ac38-4279-802a-1b291a1b62c1
          History

          evolution,behavior,Hirudo,Helobdella,neural development,leech
          evolution, behavior, Hirudo, Helobdella, neural development, leech

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