The mechanisms of intertidal fish coexistence: a model

Barrett, Chris J; Johnson, Magnus L.; Hull, Susan L.

doi:10.7287/peerj.preprints.660v1

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…Larger body‐sized intertidal fish could also compete for rock pools and exclude smaller fish from the best pools that offer greater opportunities for shelter and feeding (Macieira & Joyeux, 2011; Mahon & Mahon, 1994). Inter‐ and intraspecific relationships can act independently or synergistically, promoting a greater reduction in the abundance of smaller specimens when competition may be high, and a smaller reduction when competition is reduced (Barrett et al, 2014) which could also explain why there were larger individuals of L. pholis on the protected shores. Specimens on protected shores of NES were larger and may have competitively excluded smaller specimens.…”

Section: Discussionmentioning

confidence: 99%

Lipophrys pholis is larger, grows faster and is in better condition in protected than in unprotected rocky shores

Compaire,

Visintini,

Soriguer

et al. 2024

Aquatic Conservation

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Intertidal fish are a key component of littoral food webs, contributing to the diets of birds and commercial fish species. Ascertaining their growth and condition can therefore help understand the health status of local communities. Lipophrys pholis is a fish of the rocky intertidal with a wide distribution throughout the North‐eastern Atlantic (NE Atlantic) that has been recommended for use as an indicator in the environmental biomonitoring of marine ecosystems. However, it is unclear yet if this species is sensitive to the reserve effect. In this study, the size, growth and body condition of specimens caught at protected and unprotected rocky shores of two contrasting marine provinces of the NE Atlantic were analysed to address whether L. pholis is sensitive to the reserve effect. L. pholis were larger, grew faster in weight and were in better condition in the protected shores of both provinces. A faster growth rate was observed in the populations of the warmer province. Inshore waters of unprotected sites in the Northern European Seas sampled in this study have recently been incorporated into a protected area. Thus, these results can help assess the success of the marine conservation programme and the time L. pholis needs to improve its population's health at these shores. Regulating access to shores to avoid trampling and harvesting is a protection measure that can help enhance the health and conservation of L. pholis populations.

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Section: Discussionmentioning

confidence: 99%

Lipophrys pholis is larger, grows faster and is in better condition in protected than in unprotected rocky shores

Compaire,

Visintini,

Soriguer

et al. 2024

Aquatic Conservation

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“…octopuses M. defilippi and O. vulgaris,Bennice et al (2021) identified habitat portioning, temporal partitioning, and diet partitioning and the mechanisms for resource portioning. Related to intertidal fish, however,Barrett et al (2014) identified seven mechanisms for the interspecific coexistence: (1) when fish diversity is low, (2) when co-occurrence is minimal, (3) when habitat use is different between species, (4) when shelter/protection are in high abundance, (5) when resources are such that co-occurring fishes prey upon food items other than fish, (6) when resources are varied enough that competition for prey items is reduced, and (7) when there is a difference intargeted prey items. Applying these mechanisms to the current work, it could be considered that coexistence is maintained and promoted as octopus diversity is low (two resident species) and that co-occurrence is minimal (and is reducing).…”

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confidence: 99%

Happy families? Insight into the coexistence between the curled octopus (Eledone cirrhosa) and common octopus (Octopus vulgaris) in waters around the UK

Barrett,

Brazier

2024

Marine Ecology

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This case study investigated the co‐occurrence of the curled octopus (Eledone cirrhosa) and common octopus (Octopus vulgaris), in waters around the United Kingdom. The findings suggest that coexistence may be maintained because of the lack of competition for E. cirrhosa against the seemingly declining O. vulgaris populations, and that habitat and temporal partitioning are the likely mechanisms. It is contemplated whether species misidentification may an important factor in masking the accuracy of population dynamics of co‐occurring octopus species, and, as such, potential uncertainty in octopus coexistence and any future fishery management decisions. It is confidently suggested that, currently, only two octopus species are resident to UK waters. Now, further studies should include diet partitioning to determine whether diet partitioning is a mechanism for E. cirrhosa and O. vulgaris coexistence, and monitoring may make us understand their population dynamics.

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The mechanisms of intertidal fish coexistence: a model

Cited by 2 publications

References 7 publications

Lipophrys pholis is larger, grows faster and is in better condition in protected than in unprotected rocky shores

Lipophrys pholis is larger, grows faster and is in better condition in protected than in unprotected rocky shores

Happy families? Insight into the coexistence between the curled octopus (Eledone cirrhosa) and common octopus (Octopus vulgaris) in waters around the UK

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