Reef microhabitats mediate fish feeding intensity and agonistic interactions at Príncipe Island Biosphere Reserve, Tropical Eastern Atlantic

Canterle, Angela M.; Nunes, Lucas T.; Fontoura, Luisa; Maia, Hugulay Albuquerque; Floeter, Sergio R.

doi:10.1111/maec.12609

Cited by 12 publications

(7 citation statements)

References 58 publications

(84 reference statements)

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“…For example, on Príncipe Island, Cowburn (2018) mapped four subtidal habitats and four coastal habitats along the island. In addition, a recent study investigated the role of four different reef microhabitats in shaping biological interactions of fishes (Canterle et al 2020). Regarding São Tomé Island, the scenario is very similar to that of Príncipe.…”

Section: Marine and Freshwater Ecosystemsmentioning

confidence: 99%

The Fishes of the Gulf of Guinea Oceanic Islands

Costa

Maia

Almeida

2022

Biodiversity of the Gulf of Guinea Oceanic Islands

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This chapter reviews the current knowledge of the marine (including deep-sea species) and freshwater fishes of the Gulf of Guinea oceanic islands. Some biogeographic and conservation considerations are also presented. A total of 1045 species are likely present in the region, including 107 Elasmobranchii (37 confirmed, 65 potential, and 5 erroneous), one confirmed Holocephali, and 937 Actinopteri species (515 confirmed, 385 potential, 32 erroneous, and 5 questionable). Most of the coastal species are shared with the surrounding African continental shelf, while several species are amphi-Atlantic (present in both sides of the Atlantic Ocean), and some species have sister-species in the western Atlantic. A total of 15 species are endemic to the region, and 2 are introduced. Further studies are still needed to better understand the ichthyofauna of the Gulf of Guinea oceanic islands and help policymakers better define conservation and protection plans.

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Section: Marine and Freshwater Ecosystemsmentioning

confidence: 99%

The Fishes of the Gulf of Guinea Oceanic Islands

Costa

Maia

Almeida

2022

Biodiversity of the Gulf of Guinea Oceanic Islands

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“…This showed that non-native species can disrupt this important component of ecosystem functioning, especially large mammals, which are seldom native on oceanic islands. Other quantitative studies at the community level have assessed how reef microhabitats mediate fish agonistic interactions (Canterle et al 2020), and how land use and host species influence richness, prevalence, and co-infection patterns of haemosporidian bird parasites (Reis et al 2021). A quantitative, species-specific study used stable isotopes to reveal that juvenile São Tomé Green Turtles adapt their diet preferences to the available food sources and, in contrast with expectations, are not strict herbivores (Hancock et al 2018).…”

Section: Species Interactionsmentioning

confidence: 99%

Species Ecology in the Gulf of Guinea Oceanic Islands: Distribution, Habitat Preferences, Assemblages, and Interactions

Soares

Hancock

Palmeirim

et al. 2022

Biodiversity of the Gulf of Guinea Oceanic Islands

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The oceanic islands of the Gulf of Guinea (Príncipe, São Tomé, and Annobón) are an exceptional centre of endemism for flora and fauna. Remarkable progress has been made in biological research during the last few decades: from species being described and reported for the first time, to general patterns of species-habitat associations found across terrestrial, coastal, and marine taxa. Despite this increase in knowledge, key aspects of Gulf of Guinea species ecology remain poorly understood. This chapter reviews existing knowledge on the biodiversity of the islands, focusing on species distributions, population abundance estimates, traits, habitat associations and interactions. To promote these islands as ecological models, and to ensure the future of their endemic-rich biodiversity, it is essential to overcome current knowledge gaps and reduce existing taxonomic, spatial, and temporal biases in the information available. Therefore, future studies should favour systematic island-wide surveys and prioritize understudied areas and taxonomic groups. Moreover, long-term monitoring studies are urgently needed to assess biodiversity trends and to advise conservation actions. The future of ecological research and conservation of the unique biodiversity of these islands must increasingly rely on the development of local biodiversity-focused scientific expertise, through outreach, capacity building, and advanced training, paired with international collaborations and the development of local organizations.

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“…Although there is evidence of reef fish interacting with patch selection at the reefscape level, their roving foraging is more site-attached and constrained by diel movements from central refuges in comparison to migratory terrestrial herbivores (Nash et al 2015, Davis et al 2017b. Furthermore, reef herbivory patterns are often confined to small areas and sometimes microhabitats, even for more largebodied parrotfishes (Fox and Bellwood 2013, Brandl et al 2015, Carlson et al 2017, Davis et al 2017b, Canterle et al 2020, Puk et al 2020. For these reasons, our observation methods are proportional with previously observed spatiotemporal scales of reef fish herbivory, but, as most things in ecology, observed short-term foraging patterns here are dependent on both spatial and temporal scale.…”

Section: Generality Of Foraging Metricsmentioning

confidence: 99%

Species differences drive spatial scaling of foraging patterns in herbivorous reef fishes

Chow

Wassénius

Dornelas

et al. 2021

Oikos

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Herbivory is a core ecosystem function that is delivered heterogeneously across space. Disentangling the drivers of foraging patterns is key to understanding the functional impact of herbivores. Because intrinsic drivers of foraging like metabolism, nutritional requirements and movement costs scale allometrically, foraging movement patterns in terrestrial herbivores have been shown to also scale positively with body size. However, spatial patterns of herbivory can also be explained by orthogonal factors such as trophic position, competition and functional groupings. Here, we investigate body size and species traits as drivers of the spatial scaling of foraging patterns in herbivorous coral reef fishes. We quantified foraging patterns of 119 individuals from nine common herbivorous species using focal individual surveys. Body size, species identity, feeding substrata, social grouping and functional group were tested as predictors of three foraging metrics: foraging area, inter-foray distance and tortuosity. Our resulting model revealed that species identity overshadowed body size as a predictor in models for all foraging metrics. While foraging area was explained best by species only, the resulting tortuosity and mean inter-foray distance models included a small effect of body size that explained within-species variation. We do not find strong support for size-scaling of foraging patterns in our study species. These findings indicate that foraging allometry based on Optimal foraging theory cannot be generally applied to reef fish assemblages due to a diversity of foraging strategies, such as spatial partitioning and territoriality. Our work reveals the importance of behavioural ecology and taxonomic diversity in understanding herbivory, especially given the functional differences across species. With coral reefs under threat across the world, this is an important step to disentangling the spatial delivery of a core ecosystem function.

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Reef microhabitats mediate fish feeding intensity and agonistic interactions at Príncipe Island Biosphere Reserve, Tropical Eastern Atlantic

Cited by 12 publications

References 58 publications

The Fishes of the Gulf of Guinea Oceanic Islands

The Fishes of the Gulf of Guinea Oceanic Islands

Species Ecology in the Gulf of Guinea Oceanic Islands: Distribution, Habitat Preferences, Assemblages, and Interactions

Species differences drive spatial scaling of foraging patterns in herbivorous reef fishes

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