Occurrence and distribution during the post-settlement stage of two Choerodon species in shallow waters around Ishigaki Island, southern Japan

Yamada, Hideaki; Nanami, Atsushi; Ohta, Itaru; Fukuoka, Kouki; Sato, Taku; Kobayashi, Masato; Hirai, Nishio; Chimura, Masayuki; Akita, Yuichi; Kawabata, Youhei

doi:10.1007/s12562-012-0506-4

Cited by 10 publications

(3 citation statements)

References 26 publications

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“…We found that recruits of all three lethrinid species were found exclusively in macroalgae‐dominated habitats, which identifies this as a key nursery for these fish. These findings are consistent with previous studies that show lethrinid recruits detect and preferentially settle into macrophytes (Arvedlund and Takemura ), and that seaweeds are nursery habitat for a number of tropical and temperate reef fish species in locations around the world (Wilson et al ; Yamada et al ; Chaves et al ; Hoey et al ; Fulton et al ). In shallow tropical waters seagrasses are often recognized as nursery habitat for many tropical fish, including lethrinids (Dorenbosch et al ; Lugendo et al ; Nakamura and Tsuchiya ), even though fleshy fucoids, particularly seaweeds of the genus Sargassum , are often prominent macrophyte habitats in coastal ecosystems (Bruno et al ).…”

Section: Discussionsupporting

confidence: 92%

“…Arguably, the conservation value of these habitats is now well recognized among scientists, managers, and the general public (Alongi ; Orth et al ; Waycott et al ). However, increasing evidence is emerging that canopy‐forming seaweed habitats also provide nurseries for juvenile fishes (Wilson et al ; Yamada et al ; Hoey et al ; Evans et al ; Bertocci et al ; Fulton et al ), such that their value to marine conservation and fisheries management is rapidly becoming apparent.…”

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confidence: 99%

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Climatic conditions and nursery habitat quality provide indicators of reef fish recruitment strength

Wilson

Depczynski

Holmes

et al. 2017

Limnology & Oceanography

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Identifying and protecting nursery habitats for species is a key conservation strategy for the long-term sustainability of populations. In tropical ecosystems, macroalgal habitats have recently been identified as nurseries for fish of commercial and conservation significance. Here, we explore how local-scale variations in seaweed habitat quality interact with large-scale climatic conditions (Southern Oscillation Index, SOI) to influence the recruitment of three tropical fish species (Lethrinus spp.), often targeted by fishers. New fish recruits and juveniles of all species were almost exclusively found in macroalgal nursery habitats, while adults of two of these species were predominantly found on adjacent coral reefs. Annual supply rates of new recruits were found to be strongly correlated to variations in the SOI, with La Nina conditions associated with higher recruitment. However, local rates of recruitment were generally poor predictors of older juvenile abundance. Instead, local juvenile abundance was more closely related to structural characteristics of macroalgae nursery habitat quality (density, canopy height, canopy cover) and/or predator biomass, at the time of survey, with species-specific habitat associations apparent. Given the dynamic nature of fish recruitment supply to the SOI, coupled with the effects of climatic and oceanic processes on the structure of macroalgal patches, these results suggest protection of macroalgal nursery habitats that maintain high canopy density, height and cover is critical to supporting the conservation of fish populations.

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Section: Discussionsupporting

confidence: 92%

mentioning

confidence: 99%

Climatic conditions and nursery habitat quality provide indicators of reef fish recruitment strength

Wilson

Depczynski

Holmes

et al. 2017

Limnology & Oceanography

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“…Such avoidance has previously been attributed to physical movement of algal habitats in association with wave action, low availability of suitable fine-scale microshelter, higher predation risk in dense macroalgal areas and/or undesirable chemical cues from seaweed-dominated reefs (Hoey and Bellwood 2011;Lecchini et al 2013;Dixson et al 2014). Conversely, a small proportion of tropical fish recruits have been found to positively associate with the structural complexity and potential food sources provided by macroalgal patches in tropical regions (Lecchini et al 2007;Wilson et al 2010;Evans et al 2014;Yamada et al 2012;Hoey et al 2013). Tropical fishes may also respond to macroalgae differently on temperate than tropical reefs.…”

Section: Communicated By Biology Editor Dr Andrew Hoeymentioning

confidence: 99%

Temperate macroalgae impacts tropical fish recruitment at forefronts of range expansion

2017

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. Abstract Warming waters and changing ocean currents are increasing the supply of tropical fish larvae to temperature regions where they are exposed to novel habitats, namely temperate macroalgae and barren reefs. Here, we use underwater surveys on the temperate reefs of southeastern (SE) Australia and western Japan (*33.5°N and S, respectively) to investigate how temperate macroalgal and non-macroalgal habitats influence recruitment success of a range of tropical fishes. We show that temperate macroalgae strongly affected recruitment of many tropical fish species in both regions and across three recruitment seasons in SE Australia. Densities and richness of recruiting tropical fishes, primarily planktivores and herbivores, were over seven times greater in non-macroalgal than macroalgal reef habitat. Species and trophic diversity (Kdominance) were also greater in non-macroalgal habitat.Temperate macroalgal cover was a stronger predictor of tropical fish assemblages than temperate fish assemblages, reef rugosities or wave exposure. Tropical fish richness, diversity and density were greater on barren reef than on reef dominated by turfing algae. One common species, the neon damselfish (Pomacentrus coelestis), chose nonmacroalgal habitat over temperate macroalgae for settlement in an aquarium experiment. This study highlights that temperate macroalgae may partly account for spatial variation in recruitment success of many tropical fishes into higher latitudes. Hence, habitat composition of temperate reefs may need to be considered to accurately predict the geographic responses of many tropical fishes to climate change.

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Importance of macroalgal fields as coral reef fish nursery habitat in north-west Australia

et al. 2013

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Occurrence and distribution during the post-settlement stage of two Choerodon species in shallow waters around Ishigaki Island, southern Japan

Cited by 10 publications

References 26 publications

Climatic conditions and nursery habitat quality provide indicators of reef fish recruitment strength

Climatic conditions and nursery habitat quality provide indicators of reef fish recruitment strength

Temperate macroalgae impacts tropical fish recruitment at forefronts of range expansion

Importance of macroalgal fields as coral reef fish nursery habitat in north-west Australia

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