Vertical and horizontal distribution patterns of the giant sea anemone Heteractis crispa with symbiotic anemonefish on a fringing coral reef

Hattori, Akihisa

doi:10.1007/s10164-005-0160-8

Cited by 16 publications

(16 citation statements)

References 18 publications

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“…A similar phenomenon is observed in another giant sea anemone Heteractis crispa, which inhabits shallow reef edges in a fringing coral reef (Hattori 2006): individuals are more abundant in shallow reefs (<0.5 m deep), where few large individuals are found, and larger individuals are found in deeper habitats (<4 m deep) of the reef edges, where few small individuals are found. Hattori (2006) suggests that anemones in the deep habitats, which are suitable for their growth, suffer from high predation pressures when juveniles, while those in the shallow habitats, which provide with refuges consisting of corals, suffer from higher levels of physiological stress such as higher water temperature. For S. gigantea, in this study, individuals on the patch reefs inhabited slightly deeper than those on the shallow sandy bottoms nearby the dense seagrass beds.…”

Section: Discussionsupporting

confidence: 75%

“…There was no S. gigantea without anemonefish. The area covered by the tentacles of each actinia was regarded as an oval and was measured and calculated (long axial length · short axial length · p/4) (Hattori 2002(Hattori , 2005(Hattori , 2006. All S. gigantea were individually recognized by their locations on the map and body sizes.…”

Section: Methodsmentioning

confidence: 99%

“…However, the cost in energy of maintaining the body increases in proportion to the body volume (Sebens 1982). Therefore, we can assume that S. gigantea having larger crown surface areas will be found more frequently in a habitat type with more prey and lower levels of physiological stress (Hattori 2006).…”

Section: Introductionmentioning

confidence: 99%

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Incorporating fine‐scale seascape composition in an assessment of habitat quality for the giant sea anemone Stichodactyla gigantea in a coral reef shore zone

Hattori

Kobayashi²

2008

Ecological Research

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Habitat loss due to land reclamation often occurs in sandy coral reef shore zones. The giant sea anemone Stichodactyla gigantea, which harbors the false clown anemonefish Amphiprion ocellaris, both of which are potentially flagship species, inhabit these places. To assess habitat quality for S. gigantea, we examined correlative associations between the number and the body size of S. gigantea and the amount of habitat types in fine-scale seascape composition quantified from an enlarged section of a high-resolution (1/2,500) color aerial photograph of the shallow shore zone of Shiraho Reef, Ishigaki Island, Japan. This study confirmed that anemones were most abundant at the edges of dense seagrass beds characterized by shallow sandy bottoms, rock beds, and sparse seagrass beds, while they were less abundant in coral patch reefs. However, anemones inhabiting coral patch reefs were significantly larger and their rate of disappearance over 3 years was lower than those inhabiting other habitats. This suggests that coral patch reefs may be more suitable habitats supporting larger animals and greater persistence of S. gigantea. The visual census techniques applied here, combined with aerial photography and image-analysis software, may be useful as a simple analytical tool for local assessment of suitable habitats for relatively small-bodied marine fauna in shallow-water seascapes.

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Section: Discussionsupporting

confidence: 75%

Section: Methodsmentioning

confidence: 99%

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Incorporating fine‐scale seascape composition in an assessment of habitat quality for the giant sea anemone Stichodactyla gigantea in a coral reef shore zone

Hattori

Kobayashi²

2008

Ecological Research

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“…Consequently, host abundance may have depended upon the product of TA and TP. A host anemone species (Heteractis crispa) is known to be more abundant in the shallow edges of reefs than in the shallowest parts in a fringing reef of Sesoko Island, Okinawa, because physiological stress (extreme temperature, aerial exposure and wave action) is less severe and hard and soft corals are more abundant at the reef edges, which provide the host with refuge and shelters (Hattori 2006).…”

Section: Discussionmentioning

confidence: 99%

Configuration of small patch reefs and population abundance of a resident reef fish in a complex coral reef landscape

Hattori

Kobayashi²

2006

Ecological Research

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Habitat use by the resident coral reef anemonefish, Amphiprion frenatus, was examined in the complex coral reef landscape of Shiraho Reef, Ishigaki Island, Okinawa, Japan, using an enlarged color aerial photograph processed using image analysis software as an accurate field map. The anemonefish inhabit assemblages of the host sea anemone, Entacmaea quadricolor (clonal type), which inhabit various patch reefs in the back reef moat. We located all patch reefs inhabited by the host in the map based on snorkel observations: 297 anemonefish were found in 93 host assemblages in the study site of 2.9 ha. These patch reefs could be recognized by the reef colors, including the shadows (blackish color) in the photograph. Using image analysis software, the colors of the patch reefs were chosen and pixels with the same color values were regarded as potential habitat patches for the fish (PHPs). PHPs were 3D patch reefs (>0.5 m in height). Total areas (TA) and total perimeters (TP) of PHPs were measured in nine quadrats in the digitized aerial photograph. Host abundance and anemonefish abundance in a quadrat showed stronger correlations with the product of TA and TP of PHPs than TA alone. A site with numerous large 3D patch reefs ( ‡0.75 m 2 in situ) can be a better habitat for the fish than other sites consisting of several huge 3D patch reefs of the same total area. The methodology applied here may be useful for assessing the quality of habitats for small resident animals in shallow subtidal reefs.

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“…In Heteractis crispa, Hattori (JE 2006) [12] found that the sizes of anemones were positively correlated with their water depth in Japan. However, in the present investigation, the size of the three most common host anemones showed a very weak correlation with the water depth.…”

Section: Discussionmentioning

confidence: 98%

Ecological Studies on Two Amphiprion Species in Maldivian Coral Reefs

Patzner¹

2008

TOFISHSJ

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Abstract:Amphiprion clarkii and A. nigripes were found in coral reefs of three different atolls in the Maldives. A. clarkii was associated with five species of host anemones, but A. nigripes was only found in Heteractis magnifica. In few cases, both anemonefishes have utilized the same individual of H. magnifica. There was no significant correlation between the size of the anemones and the number of the inside living Amphiprion.

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Vertical and horizontal distribution patterns of the giant sea anemone Heteractis crispa with symbiotic anemonefish on a fringing coral reef

Cited by 16 publications

References 18 publications

Incorporating fine‐scale seascape composition in an assessment of habitat quality for the giant sea anemone Stichodactyla gigantea in a coral reef shore zone

Incorporating fine‐scale seascape composition in an assessment of habitat quality for the giant sea anemone Stichodactyla gigantea in a coral reef shore zone

Configuration of small patch reefs and population abundance of a resident reef fish in a complex coral reef landscape

Ecological Studies on Two Amphiprion Species in Maldivian Coral Reefs

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