Rocky reef incursions: challenges faced by reef fishes in a Brazilian Hope Spot region

Machado, Augusto A.; Masi, Bruno P.; Aguiar, Aline A.; Ozorio, Maria E.C.; Salles, Caio N.; Hostim-Silva, Maurício; Bertoncini, Áthila A.

doi:10.1016/j.marpolbul.2023.115240

Marine Pollution Bulletin

2023

DOI: 10.1016/j.marpolbul.2023.115240

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Rocky reef incursions: challenges faced by reef fishes in a Brazilian Hope Spot region

Augusto A. Machado,

Bruno P. Masi,

Aline A. Aguiar

et al.

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2024

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Cited by 3 publications

References 72 publications

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No-take zone in check: An ecological assessment of the management role in reef fish conservation in a Brazilian Hope Spot region

Machado,

Aguiar,

Abieri

et al. 2024

Ocean & Coastal Management

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No-take zone in check: An ecological assessment of the management role in reef fish conservation in a Brazilian Hope Spot region

Machado,

Aguiar,

Abieri

et al. 2024

Ocean & Coastal Management

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Trophic Structure and Isotopic Niche of Invaded Benthic Communities on Tropical Rocky Shores

Pires-Teixeira,

Neres-Lima,

Barbosa

et al. 2024

Biology

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When a species is introduced in a new location, it is common for it to establish itself when it finds favorable conditions in the receptor community with regard to interspecific interactions with native species. The azooxanthellate corals Tubastraea coccinea and Tubastraea tagusensis are invasive species introduced in the Caribbean Sea, the Gulf of Mexico, and the Brazilian Southwest Atlantic. They are successful competitors for space, have multiple reproductive modes, and have high larval dispersion and recruitment, but studies on food and trophic relationships of the genus Tubastraea are still scarce. In the present study, we used isotopic values of δ13C and δ15N to investigate trophic relationships in rocky shore communities invaded by T. tagusensis and T. coccinea corals under different oceanographic and anthropogenic contexts. Using metrics derived from the isotopic values, we show that invaded communities have a lower degree of trophic diversity, with species characterized by similar trophic ecologies while abiotic factors seem to contribute to the biotic resistance of communities exposed to invasion events. Tubastraea spp. occupy a niche space similar to that occupied by the native community of suspension feeders, sharing resources already consumed by the receptor community, which makes invading corals successful competitors for food.

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Updated range distribution of the non-native Asian green mussel Perna viridis (Linnaeus, 1758) at Guanabara Bay, Rio de Janeiro, Brazil

de Messano,

Gonçalves,

Kassuga

et al. 2024

PeerJ

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Guanabara Bay, located at Rio de Janeiro, Brazil, is a highly urbanized and polluted estuary that houses different port areas, shipyards, and marinas of intense maritime traffic. This infrastructure is widely associated with the introduction and spread of non-native sessile species. A rapid assessment of non-native benthic sessile species conducted in the bay in late 2022 across 19 sites identified a total of 83 taxa, both native and non-native, classified into the following main groups: one Cyanophyta, 13 Macroalgae, 14 Porifera, 11 Cnidaria, six Bryozoa, five Annelida, 10 Mollusca, six Crustacea, 10 Echinodermata, and seven Ascidiacea. Our findings revealed the proliferation of the Asian green mussel (Perna viridis Linnaeus, 1758), a species noted for its exceptional ability to achieve extremely high biomass levels globally. In Brazil, the bivalve was first reported less than 6 years ago in 2018 at Guanabara Bay, on a mariculture farm at Arraial do Cabo (200 km away) in 2023 and more recently in the south (Paranaguá Bay), besides two coastal islands outside Guanabara Bay on natural rocky shores. The present survey recorded P. viridis at 17 sites, including natural substrata, co-occurring with native species. No Tubastraea spp. were observed in Guanabara Bay. Controlling and mitigating the consequences of bioinvasion events can be challenging, but biosafety protocols should be adopted in the near feature to minimize the risks and impacts caused by species dispersal.

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Rocky reef incursions: challenges faced by reef fishes in a Brazilian Hope Spot region

Cited by 3 publications

References 72 publications

No-take zone in check: An ecological assessment of the management role in reef fish conservation in a Brazilian Hope Spot region

No-take zone in check: An ecological assessment of the management role in reef fish conservation in a Brazilian Hope Spot region

Trophic Structure and Isotopic Niche of Invaded Benthic Communities on Tropical Rocky Shores

Updated range distribution of the non-native Asian green mussel Perna viridis (Linnaeus, 1758) at Guanabara Bay, Rio de Janeiro, Brazil

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