Skip to main content
Log in

How can environmental variables affect the sexual reproduction of a tropical symbiotic sponge?

  • Original Paper
  • Published:
Marine Biodiversity Aims and scope Submit manuscript

Abstract

In the tropics, the marine sponge Dysidea janiae lives in obligatory symbiosis with the red macroalga Jania adhaerens. However, how this symbiosis is achieved, and how it influences the reproduction of the sponge is still unknown. We analysed the influence of environmental variables on the gametogenesis and embryogenesis of the sponge. We also investigated the histology of the reproductive propagules of the sponge over 3 years, aiming to understand how this symbiosis is established. Dysidea janiae is viviparous and gonochoristic, with a continuous but small reproductive effort. The reproductive dynamics of gametes and embryos were explained by different sets of environmental variables. Although the temperature was not directly related to the reproduction of the sponge in general, there was an increase in the density of spermatic cysts during the year when the El Niño occurred. The day length was related to the embryo dynamics, which were interpreted as an indirect effect of the increase in photosynthetic rates of the symbiont on the energetic budget of the sponge. As no algal propagules were found associated with the eggs or larvae of the sponge, the acquisition of the algae by the sponge is probably a ‘trial-and-error’ relationship after larval release. We propose that the symbiosis increases the fitness of the adult sponge, forcing the larvae to seek new macroalgae to settle on and start a new symbiosis all over again.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7

Similar content being viewed by others

References

Download references

Acknowledgements

We are grateful to Danyele Santos, Franciele Oliveira, Gustavo Kasper, Jéssica da Hora, Ubaldo Porto and Vivian Vasconcellos, all students of our lab (LEBR-UFBA) that helped in collecting the sponges during this study. We thank Guilherme Lessa for providing data on seawater temperature, José Marcos Nunes for the discussion about algal biology and development and Daniel Gonçalves-Souza for helping with the use of the statistics software. We also thank two anonymous reviewers that provided constructive comments on the manuscript. All biological material was collected in accordance to the Brazilian Environmental law, under the licence SISBIO/ICMBio/MMA n° 37036-2. Our lab is part of the National Institute of Science and Technology in Interdisciplinary and Transdisciplinary Studies in Ecology and Evolution (INCT IN-TREE).

Funding

This study was funded by the Brazilian National Council of Technological and Scientific Development (CNPq: 477227/2013-9), Fundação de Amparo à Pesquisa do Estado da Bahia (FAPESB: JCB0014/2016) and PROPCI/PRODOC-UFBA. BC received fellowships of the Programa de Bolsas de Iniciação Científica (PIBIC) of UFBA.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Emilio Lanna.

Ethics declarations

Conflict of interest

Authors declare that they have no conflict of interest.

Ethical approval

All applicable international, national, and/or institutional guidelines for the care and use of animals were followed by the authors.

Sampling and field studies

All necessary permits for sampling and observational field studies have been obtained by the authors from the competent authorities and are mentioned in the acknowledgements.

Data availability

All data generated or analysed during this study are included in this published article and its supplementary information file.

Author contribution

BC and EL participated in all steps of the research.

Additional information

Communicated by M. Klautau

Publisher’s note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary information

ESM 1

(XLSX 43.2 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Cajado, B., Lanna, E. How can environmental variables affect the sexual reproduction of a tropical symbiotic sponge?. Mar. Biodivers. 51, 23 (2021). https://doi.org/10.1007/s12526-021-01167-y

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s12526-021-01167-y

Keywords

Navigation