Stomach fullness modulates prey size choice in the frillfin goby, Bathygobius soporator

Tomida, Leonardo; Lee, James T.; Barreto, Rodrigo Egydio

doi:10.1016/j.zool.2012.04.004

Cited by 6 publications

(4 citation statements)

References 38 publications

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“…However, prey populations are not homogeneous, and certain intrinsic characteristics, such as size or sex, may result in different levels of vulnerability to predation (Bildstein et al 1989;Tomida et al 2012). The above characteristics could also affect the response of prey to predator signals.…”

Section: Introductionmentioning

confidence: 99%

“…However, in some other species, bird predation proved to be more efficient on males, since they were easier to target than females, due to their size and color (Koga et al 2001). Size affects predation risk as well, since large, adult crabs have larger and more powerful claws and stronger carapaces than juvenile, smaller specimens, which are easier to manipulate and crush (Tomida et al 2012). As a result, in some species the risk of predation by birds influences the spatial distribution and behavioral strategies of juveniles and adults fiddler crabs (Ens et al 1993).…”

Section: Introductionmentioning

confidence: 99%

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Can fiddler crabs detect underwater predators? A laboratory test withLeptuca thayeri

Grande

Cannicci

Costa

2018

Ethology Ecology & Evolution

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Fiddler crabs are intertidal organisms well known to be highly adapted to low tide activity, thus a number of researches have studied their physiological, behavioral and sensory adaptations to such a tidal phase. However, recent evidences showed that some fiddler crabs are the main food item of fish, suggesting that they could also be active underwater. Based on these preliminary observations, we designed laboratory trials aimed to investigate the ability to detect underwater predators in Leptuca thayeri, across sexes and life stages. We tested a combination of chemical and visual cues, using the predator fish Sphoeroides greeleyi, and, as a control, the non-predator fish Mugil curema. Leptuca thayeri detected the presence of chemical cues coming from the predator fish, although significant differences between adults and juveniles were observed. Adults of L. thayeri remained within their burrows and avoided predator exposition, while juveniles were bold and even increased their activity on the sediment surface. We suggest that juvenile crabs' boldness could be explained by a predator inspection behavior, which allows them to gather information about the possible risk of different predatory species, while experienced adults reduce predation risk recognizing the predator itself.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Can fiddler crabs detect underwater predators? A laboratory test withLeptuca thayeri

Grande

Cannicci

Costa

2018

Ethology Ecology & Evolution

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show abstract

“…Based on this, the present study evaluates the effects of these direct and indirect chemical cues in ventilation rate of frillfin goby (Bathygobius soporator -locally known as amborê). The frillfin goby is an avid predator of rocky shores and estuaries that consume small fish and crustaceans [26,37]. However, these fish are also predated by larger voracious predators, such as catfish [9].…”

Section: Introductionmentioning

confidence: 99%

Ventilation responses to predator odors and conspecific chemical alarm cues in the frillfin goby

Pereira

Leutz

Valença-Silva

et al. 2017

Physiology & Behavior

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The chemical detection of predation risk is direct when based on predator odors, or indirect when an injured conspecific or heterospecific signal it. Physiological adjustments may be necessary in parallel to defensive reactions to cope with an imminent risk. Here, we tested the effects of predator odors and conspecific chemical alarm cues in ventilation response (VR) of frillfin goby, Bathygobius soporator, because this response increases oxygen uptake for supporting behavioral tasks. No VR change was detected in response to odors of predators (catfish) that fed on conspecific, heterospecific fish (tilapia), or were deprived of food and to non-predator (tilapia) that fed chow (non-specific odor control) and odor eluent. The goby's VR, however, increased in response to conspecific alarm cues, but not to heterospecific cues or eluent. Clearly, the VR response in fish depends on the nature of the chemical cue. It is in line with 'threat-sensitive hypothesis' as a chemical cue from an injured prey might mean a foraging predator, whilst the mere presence of a predator odor might not. In addition, because VR can increase, decrease or remains unchanged in response to predation risk in other fish species (including other gobies), we reinforces the species-specific chracteristic of VR responses in fish, regarding the results obtained here for frillfin gobies.

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“…During this period, fishes were fed shrimp. Before starting the experiment, fishes were kept 72 hours without food to enhance the motivation for foraging (Tomida et al 2012).…”

Section: Predation Experimentsmentioning

confidence: 99%

Association of amphipods with seaweeds

Machado¹

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Aos colegas da pós pela convivência e momentos de aprendizado, o que sem dúvida tornou o doutorado uma jornada mais agradável. Ao LABECOM por me acolher durante parte do doutorado e possibilitar novas experiências e aprendizados. Ao Prof. Erik E. Sotka e aos amigos Katie, Austin, Stacy e Ben por me acolherem em Charleston durante o intercâmbio do doutorado e por todo apoio ao trabalho desenvolvido durante esse período. Aos queridos amigos Leandro, Andressa, Karina e Amanda pela amizade que, mesmo a distância nos últimos anos, me faz lembrar onde estão as coisas boas do mundo. Aos meus míopes prediletos Elena e Cyro por estarem por perto, ainda que nem sempre fisicamente, e por compartilharmos tantos momentos de aprendizado e parceria desde a graduação. Aos queridos amigos da Unicamp: Nili, Aline (Cuca), Bruno, Silvana, Hélio, Sueli, Mari (Most) e Pedro (Chip) pela amizade, aprendizado e apoio ao longo da vida na pós-graduação. Aos queridos Marília e Edson pela amizade e por contribuírem com a minha formação enquanto profissional por meio de conversas e, principalmente, pelo exemplo. À querida Ana Paula por seu incentivo e auxílio incondicionais ao meu trabalho, e por todos os momentos de aprendizado e descontração que tornaram essa jornada muito mais leve. Aos Professores Thomas Michael Lewinsohn e Antonia Cecília Z. Amaral por cederem a infraestrutura de seus laboratórios para execução de etapas deste trabalho. Aos Professores que participaram das etapas de avaliação dessa tese (pré-banca e banca) por suas sugestões:

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Stomach fullness modulates prey size choice in the frillfin goby, Bathygobius soporator

Cited by 6 publications

References 38 publications

Can fiddler crabs detect underwater predators? A laboratory test withLeptuca thayeri

Can fiddler crabs detect underwater predators? A laboratory test withLeptuca thayeri

Ventilation responses to predator odors and conspecific chemical alarm cues in the frillfin goby

Association of amphipods with seaweeds

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