On some cryptic sponges associated with Lessonia trabeculata holdfasts in the South-eastern Pacific

ABSTRACT

The warm temperate South-east Pacific coast hosts extensive kelp forests that provide protected habitats to benthic organisms such as sponges. To soundly understand the interactions between kelps and sponges, a prior taxonomic identification of the associated species is necessary. This study aimed to report cryptic sponges found associated with the inner walls of the holdfast of the kelp Lessonia trabeculata, opportunistically collected in the upwelling area of San Juan de Marcona (15°S, Peru). Three sponges were identified including one Calcarea, Clathrina antofagastensis, and two Demospongiae, Johannesia reticulosa and Haliclona (Halichoclona) paracas. None of them was previously known to occur associated with kelps. These findings highlight the importance of exploring these less-studied (biogenic) substrates to uncover hidden marine biodiversity and the need for observational or experimental studies addressing the interactions developed between kelps and their epiphytozoans.

KEYWORDS:

• Clathrina
• Epiphytozoans
• Haliclona
• Johannesia
• Peru
• Porifera

Acknowledgements

We are thankful to Edgar Lopez and Fernando Caldas for aiding in the laboratory procedures. Thanks are due to D.K.A. Barnes and R. Downey for their comments on the first draft of the manuscript, as well as to the two anonymous referees for providing their valuable feedback.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Universidad Científica de Sur under Grant ‘Evaluación de la diversidad de Demospongiae (Phylum Porifera) de las costas central y sur del Perú (Fondo Semilla 2019, N°015-2019-PRO99)’ and ‘Inmovilización de carbono azul por bosques de macroalgas en el litoral centro-sur del Perú (Fondo Semilla 2018)’.