Behavior and development of larvae in the sponge Haliclona amboinensis. Issue 3 (8th August 2020)

• Record Type: Journal Article
• Authors: Nada, Michael Angelou L.; Baquiran, Jake Ivan P.; Cabaitan, Patrick C.; Conaco, Cecilia
• Is Part Of: Invertebrate biology. Volume 139:Issue 3(2020:Sep.)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-08-08
• Subjects: brooder -- demosponge -- metamorphosis -- Porifera -- temperature; Invertebrates -- Periodicals; 592.05
• DOI: 10.1111/ivb.12296
• Languages: English
• ISSNs: 1077-8306

Abstract

Abstract: Sponges play important roles in marine ecosystems by contributing to habitat complexity and benthopelagic coupling of nutrients. Yet, the reproduction and settlement behaviors of diverse sponge species are not well understood. Here, we examined the brooding demosponge Haliclona amboinensis, which is common on shallow reefs in Bolinao, northwestern Philippines. Gravid sponges were found between the months of May and August, coinciding with warmer sea surface temperature. Sponges released parenchymella larvae from brood chambers in the mid‐morning, suggesting that light and temperature may serve as cues to initiate hatching. Larvae immediately swam toward the surface upon emergence and migrated to the bottom of the tanks 1–2 hr after release. The presence of light and crustose coralline algae induced high larval settlement. Metamorphosis proceeded rapidly in vitro, with larval cells spreading laterally on the substrate. The osculum was first visible at 3 days after settlement. The short pelagic duration of larvae in H. amboinensis promotes local recruitment and may be important for the maintenance of sponge populations in the face of disturbances.