A review on macrobenthic trophic relationships along subtropical sandy shores in southernmost Brazil

Pinotti, Raphael Mathias; Minasi, Diogo Marroni; Colling, Leonir André; Bemvenuti, Carlos Emílio

doi:10.1590/1676-06032014006914

Cited by 18 publications

(16 citation statements)

References 59 publications

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“…Better documentation of ghost crab behavior and accessibility to resources, including the consumer’s ability to forage in strong wave surge, fine or densely-packed sediments and macrophyte wrack is desirable; such information will improve our working model and help evaluate the assumption that ghost crabs have access to all food resources on every beach. Additionally, investigations of ghost crab feeding in response to the presence of their own native (herons, gulls, raccoons) and introduced predators (foxes, feral cats, dogs) as well as competitors (plovers, sandpipers, and turnstones) may be informative [ 11 , 31 , 43 , 85 , 86 , 90 ] and may help explain the strong patterns of highest ghost crab density being recorded on beaches of intermediate width reported here. However, despite these limitations, our study provides new details on diets and trophic position given our use of longer-term, integrated measures of ghost crab diets (stable isotopes) and a dynamic food web approach.…”

Section: Discussionmentioning

confidence: 87%

“…In contrast, ghost crabs may avoid ingesting stomach contents of the comparatively larger mole crabs as they can select muscle tissue [ 37 ] which may be difficult when consuming either the smaller amphipods or coquinas. In addition, ghost crabs may supplement diets by microphagous depositing feeding when beaches become wider and less physically dynamic [ 49 , 85 ]. Higher values of TP (> 3) of ghost crabs from some beaches may indicate the use of carrion of secondary and tertiary consumers or eggs (e.g.…”

Section: Discussionmentioning

confidence: 99%

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Predator Diet and Trophic Position Modified with Altered Habitat Morphology

et al. 2016

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Empirical patterns that emerge from an examination of food webs over gradients of environmental variation can help to predict the implications of anthropogenic disturbance on ecosystems. This “dynamic food web approach” is rarely applied at the coastal margin where aquatic and terrestrial systems are coupled and human development activities are often concentrated. We propose a simple model of ghost crab (Ocypode quadrata) feeding that predicts changing dominant prey (Emerita talpoida, Talorchestia sp., Donax variablis) along a gradient of beach morphology and test this model using a suite of 16 beaches along the Florida, USA coast. Assessment of beaches included quantification of morphological features (width, sediments, slope), macrophyte wrack, macro-invertebrate prey and active ghost crab burrows. Stable isotope analysis of carbon (13C/12C) and nitrogen (15N/14N) and the SIAR mixing model were used to determine dietary composition of ghost crabs at each beach. The variation in habitat conditions displayed with increasing beach width was accompanied by quantifiable shifts in ghost crab diet and trophic position. Patterns of ghost crab diet were consistent with differences recorded across the beach width gradient with respect to the availability of preferred micro-habitats of principal macro-invertebrate prey. Values obtained for trophic position also suggests that the generalist ghost crab assembles and augments its diet in fundamentally different ways as habitat morphology varies across a highly dynamic ecosystem. Our results offer support for a functional response in the trophic architecture of a common food web compartment (ghost crabs, macro-invertebrate prey) across well-known beach morphologies. More importantly, our “dynamic food web approach” serves as a basis for evaluating how globally wide-spread sandy beach ecosystems should respond to a variety of anthropogenic impacts including beach grooming, beach re-nourishment, introduction of non-native or feral predators and human traffic on beaches.

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Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Predator Diet and Trophic Position Modified with Altered Habitat Morphology

et al. 2016

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“…A ocorrência de insetos no nível superior de praias arenosas pode estar diretamente associada ao depósito de detritos, de origem natural ou antrópica. Essas acumulações densas de depósitos orgânicos representam uma importante fonte de alimento não só para insetos, mas também para alguns crustáceos detritívoros (GANDARA -MARTINS et al, 2010;ODEBRECHT et al, 2014;PINOTTI et al, 2014). Na praia estudada o nível médio superior está localizado a pequena distância da vegetação de porte herbáceo-arbustivo.…”

Section: Resultsunclassified

“…É também comum a presença de necrófagos como o crustáceo isópodo Excirolana braziliensis. Além disso, devido a densas acumulações de diatomáceas e detritos orgânicos, formando manchas escuras no nível superior da praia, podem ser encontrados coleópteros terrestres (ODEBRECHT et al 2014;PINOTTI et al 2014).…”

Section: Introductionunclassified

Distribuição Espacial Da Macrofauna Bêntica Da Praia Da Avenida – Ilhéus-Ba, Brasil

Santos¹,

Couto²

2015

Enciclopédia Biosfera

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RESUMO As flutuações diárias da maré podem ser determinantes na distribuição espacial da macrofauna bêntica de praias arenosas devido ao tempo de exposição ao ar, às altas temperaturas, à dessecação, à irradiação solar e à salinidade. Neste estudo foi analisada a distribuição espacial da macrofauna bêntica da Praia da Avenida (Ilhéus, Bahia). Foram demarcados três transectos, com distância de 10 m entre cada um, estendendo-se desde o limite da vegetação (supralitoral) até a linha d'água (limite superior da zona de lavado-infralitoral). Cada transecto comportou 12 estações de coleta, totalizando 120 m de comprimento. Foram coletados 205 indivíduos distribuídos em 18 taxa. Larvas de Staphylinidae representaram o táxon mais abundante (113 indivíduos), seguido pelo crustáceo isópoda Excirolana braziliensis (58). O nível médio superior (MS) apresentou 184 organismos, sendo o nível com maior número de taxa e de indivíduos, devido à maior participação de larvas de Staphylinidae (113). No nível médio intermediário (NI) foram registrados 13 indivíduos distribuídos em sete taxa, sendo mais abundante o poliqueta Hemipodia californiensis (5). O nível médio inferior (MI) exibiu a menor abundância, com apenas oito organismos, cada um deles representado por uma espécie distinta. Diferente do esperado não foi possível determinar um claro padrão de zonação vertical da macrofauna bêntica ((Global R) = 0,02; p = 0,144). PALAVRAS-CHAVE: entremarés, estrutura da comunidade, praias arenosas, zonação SPATIAL DISTRIBUTION MACROFAUNA BENTHIC AVENUE BEACH-ILHÉUS-BAHIA, BRAZIL ABSTRACT The daily tidal fluctuations can be decisive in the spatial distribution of the benthic macrofauna of sandy beaches due to air exposure time, high temperatures, desiccation, sunlight e salinity. In the present study we analyzed the spatial distribution of benthic macrofauna in Avenida Beach (Ilhéus, northeast Brazil). Were marked three transects, with a distance of 10 m between each, extending from the vegetation limit (upper shore) to the waterline (upper limit of the washing areasubtidal), totaling 120 m long and 12 sampling stations in each transect. Were

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“…This was because this survey used a database that relies on users to upload reports of species interactions (Poelen et al 2014), and is thus subject to the users knowledge since, if only users with knowledge of or access to information on certain taxonomic groups or geographic regions have contributed to the database, there will be gaps in the information therein. For example, no records of bivalve consumption or consumption of the same bivalves as any crab taxon were found for several gastropod groups (see Materials and methods), but given the wide diversity of crabs, gastropods, and bivalves in the world and the fact that some members of these groups are known to consume bivalves and/or compete with crabs for other types of shared food (e.g., Powers & Kittinger 2002, Chiu et al 2011, Pinotti et al 2014, Davenport et al 2015, such gaps more likely reflect the limitations of the database than the actual absence of trophic overlap (and potential K-S interactions) between these gastropods and crabs. Therefore, while the species groups identified herein are systems in which crab-gastropod K-S interactions likely occur, other crab and shell-boring gastropod taxa that feed on the same bivalves beyond those identified in this survey should be investigated for the occurrence of these interactions as well.…”

Section: Discussionmentioning

confidence: 99%

Potential kleptoparasitism-scavenging interactions between crabs and shell-boring gastropods feeding on bivalve prey: a global survey

Quinn

2020

Plankton Benthos Res

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Shell-boring gastropod molluscs and crabs are important predators of many bivalve molluscs, and impact bivalve populations and food webs. When gastropods and crabs target the same bivalve prey, complex interactions between them arise that mediate their impacts. Kleptoparasitism and scavenging (K-S) interactions result when one predator, usually the gastropod, loses or abandons its prey, which is then stolen or scavenged by the other. Such interactions have thus far only been reported among nine crab-gastropod species groups when they fed on shared bivalve prey, but potentially occur among many others. This study used the Global Biotic Interactions (GloBI) database to search for records of shell-boring gastropods and crabs preying on the same bivalve to identify tritrophic bivalve-crab-gastropod systems in which K-S interactions may occur. In total, 871 such systems were found, which included 58 bivalve species that were each eaten by 1-8 species of shell-boring gastropods and 1-19 species of crabs. In the vast majority of these systems (>99%), no previous report of K-S interactions has been published, although in 334 cases the gastropod and crab have been reported to undergo competitive or predator-prey interactions, which may indicate that K-S and other complex interactions occur among them. The tritrophic systems identified in the present survey should be investigated in future studies to determine whether the identified crab and gastropod taxa do in fact undergo K-S interactions. Doing so will enable the development of a theoretical framework for assessing the occurrence, evolution, utilization, and impacts of these interactions in natural systems.

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A review on macrobenthic trophic relationships along subtropical sandy shores in southernmost Brazil

Cited by 18 publications

References 59 publications

Predator Diet and Trophic Position Modified with Altered Habitat Morphology

Predator Diet and Trophic Position Modified with Altered Habitat Morphology

Distribuição Espacial Da Macrofauna Bêntica Da Praia Da Avenida – Ilhéus-Ba, Brasil

Potential kleptoparasitism-scavenging interactions between crabs and shell-boring gastropods feeding on bivalve prey: a global survey

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