Strongylocentrotus intermedius

Agatsuma, Yukio

doi:10.1016/b978-0-12-819570-3.00033-0

Cited by 11 publications

(14 citation statements)

References 73 publications

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“…Data on the geographical distributions of S. intermedius and M. nudus (Agatsuma, 2013a(Agatsuma, , 2013bBazhin, 1998;Kafanov & Pavlyuchkov, 2001) and the sea otter (Kenyon, 1969) give evidence that the ranges of these species may have partially overlapped in the past, but at present, the overlapping of this predator-prey habitat seems more likely for temperate-boreal species, S. intermedius, which inhabits the Asian Pacific coastal waters from the Kamchatka Peninsula southward to the Korean Peninsula and from the Russian coast eastward to the Japanese Islands. The sea urchin M. nudus is a subtropical species, and coastal waters of the Sea of Japan near Russia (Primorye Region) and Japan (northern Hokkaido) represent the northern part of its range, whereas for the sea otter, the northern Hokkaido represented the southern boundary of its range in the northwestern Pacific until the 18th century, before fur hunting began (Wilson et al, 1991).…”

Section: Manuscript To Be Reviewedmentioning

confidence: 99%

“…The present study was undertaken to identify the temporal and spatial parameters of the complete alarm reactions in two species of sea urchins, Strongylocentrotus intermedius (A. Agassiz, 1864) and Mesocentrotus nudus (A. Agassiz, 1864) (= Strongylocentrotus nudus) under conditions of food abundance using continuous time-lapse video recording (during 1.5-2 mo) of animal behavior in the field. These echinoids are abundant in coastal environments of the northwestern Pacific; however, their ranges overlap only partially, in the southern part of the Sea of Japan washing the coasts of Korea, Japan and the Primorye region of Russia, where the lower and upper geographical boundaries of S. intermedius and M. nudus occur, respectively (see for review Agatsuma, 2013aAgatsuma, , 2013bKafanov & Pavlyuchkov, 2001). In the Sea of Japan, these sea urchins are common species in benthic communities inhabiting hard substrates at a depth of up to 25 m (Kafanov & Pavlyuchkov, 2001).…”

Section: Introductionmentioning

confidence: 99%

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Peer Review #1 of "Long-term study of behaviors of two cohabiting sea urchin species, Mesocentrotus nudus and Strongylocentrotus intermedius, under conditions of high food quantity and predation risk in situ (v0.1)"

2019

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Background. In the predator-sea urchin-macrophyte trophic cascade, the ecological effect of sea urchins as grazers depends both on their density and the changes in foraging activity, which are influenced by various disturbing factors. However, the complete duration of the alarm reactions of echinoids has not been studied until now. Here, we tested a hypothesis that two cohabiting sea urchins, Mesocentrotus nudus and Strongylocentrotus intermedius, which differ morphologically, might display different behavioral responses to high hydrodynamic activity and predation. Methods. We used continuous time-lapse video recording to clarify behavioral patterns of M. nudus and S. intermedius in presence of a large quantity of food (the kelp Saccharina japonica) but under different weather conditions and different types of predation threat: (1) calm weather conditions, (2) stormy weather conditions, (3) predation risk associated with the presence of several sea star species, and (4) predation risk associated with an alarm stimulus (crushed conspecifics or heterospecifics). Three separate video recording experiments (134 days in total) were conducted under field conditions. Video recording analysis was performed to determine the number of specimens of each sea urchin species in the cameras' field of view, size of sea urchins' groups, movement patterns and the duration of the alarm responses of both sea urchin species. Results. We showed that in the presence of kelp, M. nudus and S. intermedius exhibited both similar and different behavioral responses to hydrodynamics and predation threat. Under calm weather, movement patterns of both echinoids were similar but M. nudus exhibited the higher locomotion speed and distance travelled. Furthermore, S. intermedius but not M. nudus tended to group near the food substrate. The stormy weather caused a sharp decrease in movement activity followed by escape response in both echinoids. Six starfish species failed to predate on healthy sea urchins of either species, and only a few attacks on ailing

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Section: Manuscript To Be Reviewedmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Peer Review #1 of "Long-term study of behaviors of two cohabiting sea urchin species, Mesocentrotus nudus and Strongylocentrotus intermedius, under conditions of high food quantity and predation risk in situ (v0.1)"

2019

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“…Shelters are a representative habitat condition in marine benthic ecosystems. Marine invertebrates escape from predation and water turbulence by inhabiting crevices, cracks, burrows and spaces under rocks and boulders (Agatsuma, 2013;Tamaki, Muraoka & Inoue, 2018). Consequently, shelters are important for the fitness benefits of marine invertebrates in benthic ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Fitness benefits and costs of shelters to the sea urchin Glyptocidaris crenularis

Chi

Sun

et al. 2020

PeerJ

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Understanding the ecological role of shelters is greatly hampered by the scarcity of long-term laboratory experiments on the trade-off between fitness benefits and costs. This lack probably leads to an underestimation of the negative and/or positive effects on behaviors and growth of marine invertebrates in benthic ecosystems. Although our previous study revealed a significant effect on fitness-related traits of Glyptocidaris crenularis after 31 months, the present study extended it and investigated fitness benefits and/or costs of long-term sheltering on sea urchins to over 7 years. The present long-term study suggests that the previously reported reduction in feeding rate probably resulted from a reduction in reflexive feeding motions (Aristotle’s lantern reflex) rather than changes in foraging behavior. Actively seeking sheltering behavior was negatively impacted in individuals with continuous access to shelters. However, covering and righting behaviors did not differ in sheltered sea urchins, indicating that these behaviors are maintained to escape from adverse environments regardless of shelter. Body size of sea urchins in the group with shelters was significantly lower than those without shelters after 7 years. Weights of gonads and gut were not significantly different after 7 years despite previous observations of differences after ~2.5 years. The present study provides valuable information on the trade-off between fitness benefits and costs to sea urchins residing in shelters. However, the present study is only a laboratory investigation for one urchin species (G. crenularis) which does not consider the complexity of natural environments. Field studies should be carried out with G. crenularis and other sea urchin species, before a more universal conclusion can be drawn.

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“…The sea urchin Strongylocentrotus intermedius is a seafood delicacy with high commercial value in the world 1 , 2 . Interest in S. intermedius aquaculture has grown rapidly in the last decade 3 , 4 . The annual production of sea urchins, for example, was over 8,844 tons in China in 2018 5 .…”

Section: Introductionmentioning

confidence: 99%

“…The brown alga Saccharina japonica is commonly used as food for S . intermedius aquaculture in Japan 3 and northern China 6 . However, fresh S .…”

Section: Introductionmentioning

confidence: 99%

Effects of the brown algae Sargassum horneri and Saccharina japonica on survival, growth and resistance of small sea urchins Strongylocentrotus intermedius

Yang

Ding

et al. 2020

Sci Rep

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Mass mortality of the long line culture of the sea urchin Strongylocentrotus intermedius in summer, which is greatly associated with their disease, energy storage and resistant abilities, is the most serious problem for the development of the aquaculture. Here, a feeding experiment was conducted for ~ 9 weeks to investigate the survival, growth and gonadal development of small S . intermedius (~ 3 cm) fed either brown algae Sargassum horneri or Saccharina japonica . Subsequently, we assessed their resistant abilities via observing the behaviors of righting, tube feet extension and Aristotle's lantern reflex at both moderately elevated and acutely changed water temperatures. Sea urchins fed S . horneri showed significantly fewer diseased individuals and slower gonadal development than those fed S . japonica . Consistently, significantly greater Aristotle's lantern reflex occurred in sea urchins fed S . horneri at moderately elevated temperatures. These findings suggest that S . horneri has direct application potential as food for the long line culture of S . intermedius in summer because of the advantage in health, energy storage (avoid the energy loss caused by gonadal development at small body sizes) and resistance abilities. In comparison, sea urchins fed S . japonica outperformed those fed S . horneri for all experimental behaviors under the acutely changed water temperatures. These findings clearly suggest that S . intermedius fed S . japonica is more suitable for the areas with cold water mass in summer, because it can effectively avoid or reduce the negative impacts of acute changes of water temperature on sea urchins. The present study provides valuable information into the management of the long line culture of S . intermedius in summer.

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Strongylocentrotus intermedius

Cited by 11 publications

References 73 publications

Peer Review #1 of "Long-term study of behaviors of two cohabiting sea urchin species, Mesocentrotus nudus and Strongylocentrotus intermedius, under conditions of high food quantity and predation risk in situ (v0.1)"

Peer Review #1 of "Long-term study of behaviors of two cohabiting sea urchin species, Mesocentrotus nudus and Strongylocentrotus intermedius, under conditions of high food quantity and predation risk in situ (v0.1)"

Fitness benefits and costs of shelters to the sea urchin Glyptocidaris crenularis

Effects of the brown algae Sargassum horneri and Saccharina japonica on survival, growth and resistance of small sea urchins Strongylocentrotus intermedius

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