The foraging ecology of two pairs of congeneric demersal fish species: importance of morphological characteristics in prey selection

Labropoulou, Μ.; Eleftheriou, A.

doi:10.1111/j.1095-8649.1997.tb01361.x

Cited by 197 publications

(84 citation statements)

References 46 publications

(61 reference statements)

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“…This behavior was effective in stopping the pursuit of S. cabrilla, and was similar to the responses observed toward black seabass in the present study. Both serranid species closely associate and hunt for prey in demersal and benthic habitats (Labropoulou and Eleftheriou, 1997;Steimle et al, 1999;Gibran, 2007). In a laboratory experiment conducted by Langridge et al (2007), S. officinalis also responded to S. cabrilla with deimatic displays followed by flight.…”

Section: The Influence Of Predator Traits and Behaviorsmentioning

confidence: 99%

Defensive Responses of Cuttlefish to Different Teleost Predators

Staudinger

Buresch

Mäthger

et al. 2013

The Biological Bulletin

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Abstract. We evaluated cuttlefish (Sepia officinalis) responses to three teleost predators: bluefish (Pomatomus saltatrix), summer flounder (Paralichthys dentatus), and black seabass (Centropristis striata). We hypothesized that the distinct body shapes, swimming behaviors, and predation tactics exhibited by the three fishes would elicit markedly different antipredator responses by cuttlefish. Over the course of 25 predator-prey behavioral trials, 3 primary and 15 secondary defense behaviors of cuttlefish were shown to predators. In contrast, secondary defenses were not shown during control trials in which predators were absent. With seabass-a benthic, sit-and-pursue predator-cuttlefish used flight and spent more time swimming in the water column than with other predators. With bluefish-an active, pelagic searching predator-cuttlefish remained closely associated with the substrate and relied more on cryptic behaviors. Startle (deimatic) displays were the most frequent secondary defense shown to seabass and bluefish, particularly the Dark eye ring and Deimatic spot displays. We were unable to evaluate secondary defenses by cuttlefish to flounder-a lie-and-wait predator-because flounder did not pursue cuttlefish or make attacks. Nonetheless, cuttlefish used primary defense during flounder trials, alternating between cryptic still and moving behaviors. Overall, our results suggest that cuttlefish may vary their behavior in the presence of different teleost predators: cryptic behaviors may be more important in the presence of active searching predators (e.g., bluefish), while conspicuous movements such as swimming in the water column and startle displays may be more prevalent with relatively sedentary, bottomassociated predators (e.g., seabass).

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Section: The Influence Of Predator Traits and Behaviorsmentioning

confidence: 99%

Defensive Responses of Cuttlefish to Different Teleost Predators

Staudinger

Buresch

Mäthger

et al. 2013

The Biological Bulletin

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“…On the other hand, the use of volume instead of numerical abundance tends to increase the importance of the larger prey encountered in the diet (LABROPOULOU & ELEFTHERIOU 1997). In this sense, according to KREBS (1989), there is no consensus on which measurement is better for diet analyses.…”

mentioning

confidence: 99%

Feeding strategy of Menticirrhus americanus and Menticirrhus littoralis (Perciformes: Sciaenidae) juveniles in a sandy beach surf zone of southern Brazil

Rodrigues¹,

Vieira²

2010

Zoologia (Curitiba, Impr.)

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The diet and foraging strategy of juvenile Menticirrhus americanus (Linnaeus, 1758) and Menticirrhus littoralis (Holbrook, 1847) were studied, testing the existence of trophic overlap between these species and within different seasons (spring and summer). Individuals were sampled using a beach seine in the surf zone near Rio Grande, state of Rio Grande do Sul, Brazil. Based on Morisita's Simplified Overlap Index and Bootstrapping technique, trophic overlap between species was considered high during the spring (Cik = 0.97 ± 0.07) and low during the summer (Cik = 0.37 ± 0.14). Juveniles shared the same food resources during the spring (FO of amphipods > 0.75), with the M. americanus diet presenting lower prey diversity (N = 7) when compared to M. littoralis (N = 13). In the summer, M. americanus presented a more varied diet (N = 13) than during the spring, suggesting a non-specialized opportunistic diet, whereas M. littoralis continued to show a diversified diet (N = 14). During the summer, M. americanus presented a generalist-opportunist feeding strategy, whereas juvenile M. littoralis tended to be more specialist

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“…Diet similarity between species was calculated by the Morisita similarity index modified by Horn (1966). The values of this ratio vary from 0 to 1, and values above 0.6 are considered indicators of high overlap (Labropoulou and Eleftheriou, 1997).…”

Section: Methodsmentioning

confidence: 99%

Feeding habits of the congeneric species Stellifer rastrifer and Stellifer brasiliensis (Acanthopterygii: Sciaenidae) co-occurring in the coast of the state of Santa Catarina, Brazil

et al. 2015

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The objective of the present study was to investigate the feeding habits allowing the occurrence of the congeneric species Stellifer rastrifer and Stellifer brasiensis, collected on a seasonal basis, in the operating area of the artisanal seabob-shrimp trawl fishery in Porto Belo, an important fishing area on the southern Brazilian coast. Fish were collected seasonally from November 2009 to August 2010, in isobaths of 10, 20 and 30m. Of the 450 stomachs analyzed, 194 belongd to Stellifer rastrifer and 242 to Stellifer brasiliensis. From the totality of analyzed stomachs 33.49% were empty and 66.52% had some content. Crustacea were the predominant food category in the diet of S. rastrifer and S. brasiliensis, and the shrimp Acetes americanus was the most frequent crustacean in stomachs of both studied species. The overlapping in the diet of the species was high, however when analyzing the overlap in each season it was found that it occurred only during spring and winter. Although the most important items in the diet of these species are the same, the intake of each alternates in time, suggesting a difference in predation pressure, which leads to less direct competition in a given time.Keywords: competition, fish diet, feeding overlap, shrimp fisheries, Stellifer. A sobreposição na dieta foi alta, porém a cada estação do ano, verificou-se que a sobreposição ocorreu apenas durante a primavera e o inverno. Embora os itens mais importantes na dieta destas espécies sejam os mesmos, o consumo de cada um é alternado no tempo, o que sugere uma diferença na pressão de predação, levando a uma menor competição direta em um determinado momento. Hábitos alimentares das espécies congêneresPalavras-chave: competição, dieta, sobreposição alimentar, pesca camaroeira, Stellifer.

show abstract

The foraging ecology of two pairs of congeneric demersal fish species: importance of morphological characteristics in prey selection

Cited by 197 publications

References 46 publications

Defensive Responses of Cuttlefish to Different Teleost Predators

Defensive Responses of Cuttlefish to Different Teleost Predators

Feeding strategy of Menticirrhus americanus and Menticirrhus littoralis (Perciformes: Sciaenidae) juveniles in a sandy beach surf zone of southern Brazil

Feeding habits of the congeneric species Stellifer rastrifer and Stellifer brasiliensis (Acanthopterygii: Sciaenidae) co-occurring in the coast of the state of Santa Catarina, Brazil

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