Is Potimirim potimirim (Crustacea, Decapoda, Atyidae) a protandric hermaphrodite species? Behavioral and morphological aspects of the reproductive system

Autor(es)

Machado, Marina ^[1] ; Salti, Fernanda Cristina ^[2] ; Bertini, Giovana ^[3] ; Zara, Fernando Jose ^[2] ; Negreiros-Fransozo, Maria Lucia ^[1]

Afiliação do(s) autor(es)

^[1] Univ State Sao Paulo UNESP, Inst Biosci, Zool Sect, Grp Studies Crustacean Biol Ecol & Culture NEBECC, Campus Botucatu, BR-18618970 Botucatu, SP - Brazil

^[2] Univ State Sao Paulo UNESP, Sch Agr & Veterinarian Sci, Dept Appl Biol, Invertebrate Morphol Lab LMI, Campus Jaboticabal, BR-14884900 Jaboticabal, SP - Brazil

^[3] Univ State Sao Paulo UNESP, Lab Biol & Culture Crustaceans LABCRUST, Campus Registro, BR-11900000 Registro, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ARTHROPOD STRUCTURE & DEVELOPMENT; v. 63, JUL 2021.
• Citações Web of Science: 0

Resumo

We evaluated the mating behavior of Potimirim potimirim in the laboratory based on the assumption that this caridean might be hermaphroditic. We also performed histology and scanning electron microscopy analyses of the reproductive system of females, males, and differentiated individuals. The mating experiments produced three behavioral stages, namely, interaction, lateral positioning, and copulation (which did not necessarily occur in this sequence). The hypothesis of a random pure searching mating was corroborated by the lack of male courtship, postcopulatory guarding, and the high aggregation of individuals. Three macroscopic ovarian stages were recorded in adult females: rudimentary, developing and mature. Secondary vitellogenesis begins at the developing stage, producing mature yolk. The male reproductive system is formed by testes and the vasa deferentia (VD), that is divided into three regions: proximal, middle, and distal. The proximal VD has a typhlosole that produces a thin layer of type II secretion around the central spermatozoa mass immersed in a type I secretion. External and adherent type III secretion is produced from the MVD to DVD, and both compound the primordial spermatophore. Potimirim potimirim has a gonochoric reproductive system and mating behavior and its sexual system does not fit into any of the previously described protandric systems. (c) 2021 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 18/13685-5 - Análise integrativa da fauna brasileira de crustáceos decápodes: taxonomia, sistemática filogenética, espermiotaxonomia, morfologia do desenvolvimento pós-embrionário, ecologia e conservação
• Beneficiário: Fernando Luis Medina Mantelatto
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático