Histological Investigation of the Female Gonads of Chiropsalmus quadrumanus (Cubozoa: Cnidaria) Suggests Iteroparous Reproduction

Autor(es)

Garcia-Rodriguez, Jimena ; Ames, Cheryl Lewis ; Jaimes-Becerra, Adrian ; Tiseo, Gisele Rodrigues ; Morandini, Andre Carrara ; Cunha, Amanda Ferreira ; Marques, Antonio Carlos

• Tipo de documento: Artigo Científico
• Fonte: DIVERSITY-BASEL; v. 15, n. 7, p. 15-pg., 2023-07-01.

Resumo

The box jellyfish Chiropsalmus quadrumanus (Chirodropida: Cubozoa: Cnidaria) is common in warm waters. Although it is assumed that external fertilization is a characteristic of Chirodropida, the life history of C. quadrumanus is not yet known since its reproductive behavior has never been described, nor has the polyp has been found in nature. As a result, in the absence of documentation of reproductive behavior, we sought to test the hypothesis of external fertilization through a histological analysis of the female gonads. Herein, we analyze ten females collected in Sao Paulo and Rio de Janeiro (Brazil) and describe the gonadal organization and pattern of oocyte development. The discovery of four distinct stages of oocyte differentiation augments the scant existing reports of the structural and functional maturation of sex cells in Cubozoa species. Furthermore, the gonads of mature females comprise both mature (average diameter of 122 & mu;m) and immature oocytes, suggesting that C. quadrumanus is iteroparous and exhibits multiple reproductive cycles during its life. Medusa bell size was not found to correlate with maturity state as even small females possessed a high percentage of oocytes in late vitellogenesis, suggesting that sexual maturation occurs rapidly in C. quadrumanus females. (AU)

• Processo FAPESP: 17/12970-5 - A reprodução sexuada em espécies de águas-vivas (Scyphozoa, Cnidaria) do litoral sudeste brasileiro
• Beneficiário: Gisele Rodrigues Tiseo
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 21/09739-5 - Oogênese em espécies de Cubozoa: a morfologia das gônadas femininas é diferente entre espécies com fertilização interna e externa?
• Beneficiário: Jimena Garcia Rodriguez
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 19/01370-2 - Análise comparada das estruturas gonadais de Cubozoa no contexto da evolução de Medusozoa (Cnidaria)
• Beneficiário: Jimena Garcia Rodriguez
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 11/50242-5 - Dimensões da vida marinha: padrões e processos de diversificação em cnidários planctônicos e bentônicos
• Beneficiário: Antonio Carlos Marques
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático