Heterogeneous and compensatory growth in Melithaea flabellifera (Octocorallia: Melithaeidae) in Japan

Matsumoto, Asako K.

doi:10.1007/s10750-004-2673-5

Cited by 11 publications

(20 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A difference in water temperature of ca. 1°C can be a trigger to accelerate gonad development in the early stages of reproduction, and it can cause a difference of 2 wk to 1 mo in the date when planulae shedding occurs (Matsumoto 1997(Matsumoto , 2004. Salinity was stable in all dives in the present and previous study (Miyake et al 2004).…”

Section: Coral Zonationsupporting

confidence: 50%

“…All data were calculated from the BS diameters 0.8, 1.2, and 1.6 cm, respectively. NA: not available Velimirov 1995, Andrews et al 2002, Lasker et al 2003, Matsumoto 2004). The number of branch tips in each colony was used for the parameter of fan shape and growth.…”

Section: Methodsmentioning

confidence: 99%

“…The genus Primnoa has dichotomous branch shapes. It has already been confirmed that the number of branches is an effective index for a dichotomous branching fan (Matsumoto 2004 ) of the singlestalk morphotype colonies were calculated from the length of the colony multiplied by the area of the crosssection (cm 2 ), which was calculated from the branch diameter (cm) measured from specimens in Table 2. The volumes (cm 3 ) of the large morphotype colonies and colonies with other shapes were calculated from the area of the colony multiplied by the branch diameter (thickness of colony).…”

Section: Methodsmentioning

confidence: 99%

“…5). Their vertical zonation is thought to be influenced by water temperature because the reproduction of octocorals is affected by water temperature (Vighi 1970, Grigg 1977, Weinberg & Weinberg 1979, Matsumoto 1997, 2004, though they have strong tolerance of a wide range of water temperatures. A difference in water temperature of ca.…”

Section: Coral Zonationmentioning

confidence: 99%

See 3 more Smart Citations

Estimation of in situ distribution of carbonate produced from cold-water octocorals on a Japanese seamount in the NW Pacific

Matsumoto¹

2010

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

The importance of the deep, cold-water hexacorals as cold-water bioherms and their contribution to marine carbonate production has been demonstrated elsewhere. However, no research has been carried out to examine the contribution of carbonate production by deep, coldwater octocorals (CWOC), even though this group comprises a major component of cold-water coral fauna in the NW Pacific. To assess the contribution of CWOC carbonate production on the Shiribeshi Seamount (43°34-36' N, 139°31-35' E), Sea of Japan, remotely operated vehicle (ROV) dive video archives and deposited specimens of Primnoa pacifica (Octocorallia, Primnoidae) were analysed. To estimate the carbonate weight per colony, the diameter of cross-sections of branches or stems and the carbonate weight per volume of specimens were measured. Colony volumes were then calculated from the video footage. The amount of carbonate standing stock (CSS) was calculated at each dive line by analysing the distribution of CWOC and specimen data. The average (± SD) weight percentage of sclerites per colony of P. pacifica was 37.93 ± 7.45%, with the range 25.47 to 49.19%. It was estimated that the total amount of CSS of coral would be over 0.65 t at all dive lines (22 753 m 2 ) at the seamount. Maximum CSS was 70.64 g m -2 and maximum carbonate production was up to 3.61 ± 0.06 g m -2 yr -1. In comparison with the other CSS in non-tropical areas, our results show that CWOC may potentially contribute to carbonate production in cold-water environments.KEY WORDS: Carbonate production · Sea of Japan · Deep-water gorgonian corals · Non-tropical · Deep sea · Deep-sea coral Resale or republication not permitted without written consent of the publisher

show abstract

Section: Coral Zonationsupporting

confidence: 50%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Coral Zonationmentioning

confidence: 99%

See 2 more Smart Citations

Estimation of in situ distribution of carbonate produced from cold-water octocorals on a Japanese seamount in the NW Pacific

Matsumoto¹

2010

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

show abstract

“…Underwater photography has been used successfully for gorgonian species growing in a 2D plane (e.g. Matsumoto 2003). However, E. verrucosa colonies can exhibit a 3D morphology giving the colony a bushy form.…”

Section: Introductionmentioning

confidence: 99%

Development of a new standardised method for sustainable monitoring of the vulnerable pink sea fan Eunicella verrucosa

et al. 2012

View full text Add to dashboard Cite

The aim of this survey was to test a standardised method to follow the demographic evolution of a dense aggregative 'forest' population of the temperate gorgonian Eunicella verrucosa (Octocorallia, Gorgoniidae) using in situ photographic recordings. Distribution, density, growth and demographic evolution of the colonies was compared along two parallel transects. Computer treatment allowed the estimation of the total branch fan surface area, and the individual growth of tagged colonies was determined by measuring the increase in this surface area, using consecutive photographs taken at two-year intervals. To integrate the potential bias of branch overlapping, we proposed a correction factor between the in situ photographic surface area and the surface area of the gorgonian calculated from ex situ photographic surface area with all branches deployed. The surface-frequency distribution of colonies was converted to estimated-age-frequency distribution using an estimated growth curve based on the net growth rate. The technique used revealed significant differences in population structure and the dynamics of gorgonian colonies, as the two transects appeared to be influenced by different environmental conditions. The recruitment also seemed to vary according to year and transect, resulting in different densities. Our work showed clear results in characterising the variations of gorgonian demographic evolution at a small spatial scale; thus, it is assumed that this method could be a sustainable tool for coastal environmental managers.

show abstract

Role of food source and predator avoidance in habitat specialization by an octocoral-associated amphipod

Kumagai

2008

Oecologia

View full text Add to dashboard Cite

Small marine invertebrates often use sessile organisms as microhabitats, which can provide food sources and/or serve as refuges from predators. Because of the availability of external food items such as epibionts and detritus in the marine environment, these invertebrates may not depend on the sessile organisms as sole food sources. In this study, I hypothesized that habitat specialization by a marine invertebrate is determined by factors other than food. Results of Weld surveys oV the coast of the Izu Peninsula, on the eastern coast of Japan, showed that, with few exceptions, the distribution of the amphipod Incisocalliope symbioticus was restricted to the octocoral Melithaea Xabellifera. When presented with several habitat options, I. symbioticus selected M. Xabellifera most frequently, although some individuals chose the octocoral Acabaria japonica. The selection was proximately determined by water-borne cues from M. Xabellifera that appear to be unrelated to the octocoral as a food source, since the amphipod preferred detritus to the octocoral. As a chemical refuge, M. Xabellifera had an allelopathic eVect that deterred Wsh predation on the exposed epifauna. With regard to octocoral habitat in the study area, I. symbioticus may be restricted to M. Xabellifera because this was the only abundant octocoral consistently occurring in shallow water (·10 m), where predation is intensive. The relationship between I. symbioticus and M. Xabellifera was commensal and was ultimately driven by the value of M. Xabellifera as a chemical refuge from predation, rather than its food value. This study supports the idea that protection from predators, rather than food utilization, can promote ecological specialization.

show abstract

Heterogeneous and compensatory growth in Melithaea flabellifera (Octocorallia: Melithaeidae) in Japan

Cited by 11 publications

References 31 publications

Estimation of in situ distribution of carbonate produced from cold-water octocorals on a Japanese seamount in the NW Pacific

Estimation of in situ distribution of carbonate produced from cold-water octocorals on a Japanese seamount in the NW Pacific

Development of a new standardised method for sustainable monitoring of the vulnerable pink sea fan Eunicella verrucosa

Role of food source and predator avoidance in habitat specialization by an octocoral-associated amphipod

Contact Info

Product

Resources

About