Video-monitored predation by Caribbean reef fishes on an array of mangrove and reef sponges

  title={Video-monitored predation by Caribbean reef fishes on an array of mangrove and reef sponges},
  author={Matthew J. Dunlap and Joseph R. Pawlik},
  journal={Marine Biology},
Although predation by fishes is thought to structure benthic invertebrate communities on coral reefs, evidence to support this claim has been difficult to obtain. We deployed an array of eight sponge species on Conch Reef (16 m depth) off Key Largo, Florida, USA, and used a remote video-camera to record fish activity near the array continuously during five daylight periods (6 h for 1 d, at least 11.5 h for 4 d) and one night period (11 h). Of the eight sponge species, four were from adjacent… 

Effects of fish predation and seaweed competition on the survival and growth of corals

Although seaweed cover and biomass were both significantly greater in the full-cage treatment, coral growth did not differ significantly between cage treatments even though corals placed with pre-planted seaweeds grew significantly less than coralsplaced on initially clean substrate.

Observer presence may alter the behaviour of reef fishes associated with coral colonies

It is demonstrated that both techniques are similarly effective for recording fish abundance and species richness associated with fire-corals, however, differences were observed in the ability of each method to detect the behaviour of coral-associated fishes.

Sponge Communities on Caribbean Coral Reefs Are Structured by Factors That Are Top-Down, Not Bottom-Up

The structure of sponge communities on Caribbean coral reefs is primarily top-down, and removal of sponge predators by overfishing will shift communities toward faster-growing, undefended species that better compete for space with threatened reef-building corals.

Historical change in a Caribbean reef sponge community and long-term loss of sponge predators

Sponges are an ecologically important component of modern Caribbean coral reefs. However, little is known about the structure of sponge communities prior to the large-scale degradation of Caribbean

Interactions among Florida sponges. I. Reef habitats

Assessment of interspecific interactions among sponges in coral reef habitats in Key Largo, Florida, USA revealed the ability to overgrow or resist overgrowth varied among species, and statistical analyses of the frequencies of each interaction category revealed that the ability of a species to over grow or resistOvergrowth varied amongst species.

Spongivory by Fishes on Southwestern Atlantic Coral Reefs: No Evidence of Top-Down Control on Sponge Assemblages

The effects of spongivorous fishes on sponges cover and competitive interactions with hermatypic corals is weaker in Southwestern Atlantic than previously reported in Caribbean coral reefs, and local human impacts can influence the observed patterns.

Benthic community succession on artificial and natural coral reefs in the northern Gulf of Aqaba, Red Sea

Comparison of spatial and temporal patterns of colonization and succession of the benthic assemblage on settlement collectors in a 13-mo mensurative and manipulative experiment suggests artificial reefs have the potential to enhance cover and biomass of certain reef-associated assemblages, particularly those occupying sheltered microhabitats.

Sponge diversity in Eastern Tropical Pacific coral reefs: an interoceanic comparison

Perturbation, at local and large scale, rather than biological factors, seems to explain the low prevalence and characteristics of sponge assemblages in ETP reefs, which are very frequently located in shallow water where excessive turbulence, abrasion and high levels of damaging light occur.

Abiotic factors control sponge ecology in Florida mangroves

It is concluded that some mangrove sites that support sponge growth do so because the species found there can endure the abiotic conditions of mangroves habitats, and not because of competitive dominance over species otherwise found on the reef.



Defenses of Caribbean sponges against predatory reef fish. I. Chemical deterrency

There was no relationship between sponge color and deterrency, suggesting that sponges are not aposematic and that color variation is the result of other factors, and the invalidity of previous assessments of chemical defense based on toxicity was confirmed.

Foraging by the stoplight parrotfish Sparisoma viride. I.: Food selection in different, socially determined habitats

It is argued that the access to superior food resources on the deeper reef makes territorial defence feasible for S. viride males, and the increased availability of high-yield food and substrate types coincides with the occurrence of haremic territorial behaviour in S. infections.


Daily amounts of assimilated nutrients and energy are similar for both parrotfish species, resulting from higher feeding rates and higher assimilation efficiency in S. vetula and S. viride.

Sponges in coral reefs

Sponges are sessile aquatic metazoans, bounded by pinacoderm and containing choanocyte chambers. Choanocytes generate a waterflow from small ostia, through an incurrent and excurrenl aquiferous

Sponge-feeding fishes of the West Indies

No strong evidence is provided by data that fish predation is a significant factor in limiting sponge distribution in the West Indian region.

Foraging by the stoplight parrotfish Sparisoma viride. 11.: Intake and assimilation of food, protein and energy

In spite of lower daily foraging effort, territorial fish, living in deeper parts of the reef, ingest and assimilate higher amounts of AFDW, protein and energy per day than non-territorial fish foraging on the shallow reef.

Spongivory in Hawksbill Turtles: A Diet of Glass

The hawksbill(Eretmochelys imbricata), an endangered marine turtle associated with coral reefs throughout the tropics, feeds almost exclusively on sponges in the Caribbean, and possibly throughout

Chemical defense mechanisms on the Great Barrier Reef, Australia.

  • G. Bakus
  • Environmental Science, Biology
  • 1981
Seventy-three percent of all exposed common coral reef invertebrates, from four phyla (42 species) tested, are toxic to fish. This represents the first evidence of the high incidence to toxicity in