Microhabitat association in white-streaked grouper Epinephelus ongus: importance of Acropora spp.

Nanami, Atsushi; Sato, Taku; Takebe, Takayuki; Teruya, Kazuhisa; Soyano, Kiyoshi

doi:10.1007/s00227-013-2205-9

Cited by 22 publications

(22 citation statements)

References 32 publications

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“…External tags may catch or snag onto structurally complex habitats. The habitat use pattern of White-streaked Groupers may contribute to their relatively low external tag retention rates because this species mainly inhabits structurally complex habitats (Nanami et al 2013). In addition, this species forms fish-spawning aggregations at particular spawning grounds (Ohta and Ebisawa 2015), located an estimated 2.2-8.8 km from their normal habitats (Nanami et al 2015).…”

Section: External Tagsmentioning

confidence: 99%

“…The objective of this study was to determine the retention rates under natural conditions of three types of external tags (Atkins, dart, and opercular tags) implanted into adult individuals of the White-streaked Grouper Epinephelus ongus, which inhabits structurally complex habitats provided by bottlebrush and branching corals in tropical and subtropical areas (Nanami et al 2013). In the first part of the study, the overall retention rate of PIP PIT tags by White-streaked Groupers was tested in tanks.…”

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confidence: 99%

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Retention Rates of Plastic‐Infusion‐Process Passive Integrated Transponder Tags and External Tags in the White‐streaked Grouper Epinephelus ongus

Sato

Nanami

Takebe

et al. 2016

N American J Fish Manag

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Fish are often externally tagged to determine the abundance, exploitation rates, and other key aspects of their ecology. Tag retention rates, however, may vary by tag type. The main objective of this study was to determine the retention rates of three external tags (Atkins, dart, and opercular tags) implanted onto White‐streaked Groupers Epinephelus ongus in their natural habitat. White‐streaked Groupers were tagged with different external tags, along with a plastic‐infusion‐process PIT (PIP PIT) tag, and retention rates were evaluated in experimental tanks for 54 weeks and in their natural habitat for 374 d. None of the fish kept in experimental tanks shed their abdominally implanted PIP PIT tags over 54 weeks. The mean retention rates of the external Atkins, dart, and opercular tags were considerably lower under natural conditions (16.7 ± 2.8%, 37.5 ± 3.3%, and 28.6 ± 3.4%, respectively) than in the laboratory (80%, 70%, and 70%, respectively). Loss of tags under natural conditions may have resulted from snagging on complex structures in their habitats and on interspecies interactions. Received February 23, 2015; accepted October 27, 2015

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Section: External Tagsmentioning

confidence: 99%

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confidence: 99%

Retention Rates of Plastic‐Infusion‐Process Passive Integrated Transponder Tags and External Tags in the White‐streaked Grouper Epinephelus ongus

Sato

Nanami

Takebe

et al. 2016

N American J Fish Manag

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“…As serranid species, including E. ongus , were rarely caught by plankton nets or light traps around the Yaeyama islands (Nanami et al ., 2013 a ), hatchery‐reared fish were utilized for the experiments. Fertilized eggs of E .…”

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confidence: 97%

“…As serranid species, including E. ongus, were rarely caught by plankton nets or light traps around the Yaeyama islands (Nanami et al, 2013a), hatchery-reared fish were utilized for the experiments. Fertilized eggs of E. ongus were obtained from natural spawning wild broodstock kept in captivity at the Yaeyama Laboratory, Research Center for Subtropical Fisheries, Seikai National Fisheries Research Institute, Fisheries Research Agency, Okinawa, Japan.…”

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confidence: 99%

“…Epinephelus ongus has a bipartite life cycle (pelagic eggs and larvae with benthic juveniles and adults), which is similar to other groupers and most reef fishes (Simpson et al, 2013). Although ecological information such as age and growth (Craig, 2007), microhabitat association (Nanami et al, 2013a) and reproductive ecology (Ohta & Ebisawa, 2009;Nanami et al, 2013bNanami et al, , 2014 of juveniles and adults have been accumulated, no study had been conducted on the larval ecology of this species. This study revealed that E. ongus larvae have an ability to control hydrodynamic drag by changing the posture of their elongated spines, which would then likely affect dispersal trajectory.…”

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The effect of spine postures on the hydrodynamic drag in Epinephelus ongus larvae

Kawabata

Nishihara

Yamaguchi

et al. 2014

Journal of Fish Biology

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Laboratory behavioural observation and computational fluid dynamics (CFD) analysis were conducted to examine whether the movement of the elongated dorsal and pelvic spines changed the hydrodynamic drag in white-streaked grouper Epinephelus ongus larvae. The behavioural observation in the tank revealed that the larvae extended the dorsal and pelvic spines during passive transport and retracted during swimming; the angles of the dorsal and pelvic spines in relation to the anteroposterior axis were larger during the passive transport (mean ± S.D. = 28.84 ± 14.27 and 20.35 ± 15.05°) than those during the swimming (mean ± S.D. = 2.59 ± 5.55 and 0.32 ± 6.49°). The CFD analysis indicated that the relative hydrodynamic drag acting on the larvae was approximately 1.25 times higher when the spines were extended (passive transport) than when the spines were retracted (swimming), suggesting that the E. ongus larvae have an ability to adjust their hydrodynamic drag depending on the behavioural context.

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Managing Socio-ecological Production Landscapes and Seascapes for Sustainable Communities in Asia

Saito¹,

Subramanian²,

Hashimoto³

et al. 2020

Science for Sustainable Societies

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Microhabitat association in white-streaked grouper Epinephelus ongus: importance of Acropora spp.

Cited by 22 publications

References 32 publications

Retention Rates of Plastic‐Infusion‐Process Passive Integrated Transponder Tags and External Tags in the White‐streaked Grouper Epinephelus ongus

Retention Rates of Plastic‐Infusion‐Process Passive Integrated Transponder Tags and External Tags in the White‐streaked Grouper Epinephelus ongus

The effect of spine postures on the hydrodynamic drag in Epinephelus ongus larvae

Managing Socio-ecological Production Landscapes and Seascapes for Sustainable Communities in Asia

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