Food resource use in a tropical eastern Pacific tidepool fish assemblage

Castellanos‐Galindo, Gustavo A.; Giraldo, Alan

doi:10.1007/s00227-007-0874-y

Cited by 25 publications

(38 citation statements)

References 61 publications

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“…Although literature data suggest that R. rutilus may utilize a wide variety of resources depending on environmental circumstances (Persson, 1983; Bergman & Greenberg, 1994; Specziár et al ., 1997; Vinni et al ., 2000), no such diverse diet ontogeny as observed in the present study has been documented earlier. Previous studies on trophic guild structure of fish assemblages which also considered ontogenetic diet changes generally distinguished only two to four subjectively set size classes per species (Muñoz & Ojeda, 1998; Garrison & Link, 2000; Inoue et al ., 2005; Castellanos‐Galindo & Giraldo, 2008). These studies mainly dealt with marine fish assemblages and, similar to the present observations, found that particular species participated in one to three trophic guilds during the life span.…”

Section: Discussionmentioning

confidence: 99%

Feeding guilds and food resource partitioning in a lake fish assemblage: an ontogenetic approach

Specziár

Rezsu

2009

Journal of Fish Biology

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Ontogenetic diet patterns and trophic guild structure of a 15 species temperate lake fish assemblage were analysed over wide size intervals (up to seven orders of magnitude in body mass), representing practically the whole life span in most species. A two-step objective clustering technique supplemented with other multivariate statistical tools proved that size-related diet changes clearly played an important role in structuring trophic organization of fishes inhabiting Lake Balaton. As many as 13 out of the 15 fish species showed marked size-related dietary changes with two to four ontogenetic feeding stages. At the assemblage level, 11 trophic guilds were separated. Guild membership was size-dependent in 11 fish species that participated in two to four trophic guilds during their life span. The most complex trophic ontogeny was observed in roach Rutilus rutilus and asp Aspius aspius with four guild memberships. This study showed that trophic status of fishes may be very size-sensitive and thus a universal classification of fish species to general trophic guilds, such as 'planktivore', 'benthivore', 'piscivore' or 'herbivore', should be applied very carefully even in environmental monitoring and fisheries management applications, unless it is supported by relevant results of life span diet analyses.

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Section: Discussionmentioning

confidence: 99%

Feeding guilds and food resource partitioning in a lake fish assemblage: an ontogenetic approach

Specziár

Rezsu

2009

Journal of Fish Biology

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“…Italicised entries indicate a significant difference between the diets of P. longispinis between depths a denotes a prey category that made the greatest contribution to the diet of medium-sized P. longispinis in the depth strata listed at the top of the column teristics of predators (Bolnick et al 2002;Pusineri et al 2008) as well as prey behaviour, (Bolnick et al 2002;Castellanos-Galindo and Giraldo 2008), abundance (Zekeria et al 2002;Collins et al 2007;Castellanos-Galindo and Giraldo 2008), and the influence of habitat on each of these factors (Bethea et al 2007;Collins et al 2007;Weitkamp and Sturdevant 2008) are additional mechanisms by which food resources can be partitioned between species. As prey resources were only partially partitioned between the Platycephalid species presented here, the interaction of all the above factors are likely to play an important role in the way in which these species partition food resources and successfully co-exist.…”

Section: Teleosts Polychaetesmentioning

confidence: 99%

“…The way in which fish assemblages partition food resources is considered evidence of evolution driven by past competitive pressures (Wimberger 1994;Castellanos-Galindo and Giraldo 2008). As such, studying how food is partitioned between species may provide an insight into the functional role of different species within an ecosystem (Hajisamae et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Dietary niche differentiation of five sympatric species of Platycephalidae

et al. 2010

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The dietary composition and partitioning of food resources between five sympatric species of Platycephalidae inhabiting the coastal waters of New South Wales, Australia was investigated. Samples were collected monthly between March and November 2007 onboard commercial ocean prawn trawlers based in the ports of Yamba and Newcastle. Monthly percentage weight contribution of 12 prey categories was analysed to determine if diet was influenced by the variables: species, location, depth, size and maturity. Of the 959 stomachs from the five species examined, 28-54% contained prey. All Platycephalid species primarily consumed teleosts, however the diversity of prey and the proportion each prey type contributed to the overall diet varied substantially between species. Platycephalus caeruleopunctatus, P. longispinis, P. richardsoni and Ambiserrula jugosa were generalist carnivores and consumed prey from a wide variety of phyla including teleosts, crustaceans, polychaetes, molluscs and echinoderms. In contrast, Ratabulus diversidens were primarily piscivorous.Partitioning of prey resources between species was more evident in waters at Yamba than at Newcastle. Differences in diet between locations were considered a result of differential prey exploitation rather than shifts in the suite of prey consumed. Dietary composition was observed to be influenced by size, maturity status and depth however these differences were not observed for all species.

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“…Castellanos‐Galindo and Giraldo () studied the diet of juveniles in transient fish species in Colombia, namely Abudefduf concolor (Gill, 1862), Abudefduf troschelii (Gill, 1862), Halichoeres aestuaricola (Bussing, 1972), Chaenomugil proboscideus (Günther, 1861) and Echidna nocturna (Cope, 1872). In the Castellanos‐Galindo and Giraldo () study, A. concolor and A. troschelii were considered herbivorous and specialist feeder species, feeding mainly on macroalgae and diatoms; H. aestuaricola was considered a carnivorous species, feeding on bivalves, copepods and amphipods; C. proboscideus was considered an herbivorous and a macroalgae specialist feeder species; and E. nocturna was considered an exclusively carnivorous species, feeding on shrimps, brachyurans and stomatopods.…”

Section: Introductionmentioning

confidence: 99%

Diet of marine fish larvae and juveniles that use rocky intertidal pools at the Portuguese coast

2014

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Summary The use of tidal pools during early ontogeny is likely to enhance growth, condition and survival chances of the transient marine fish larvae and juveniles that use them. However, the diet of such individuals within tidal pools is poorly known; this knowledge is important to understand why such high numbers of individuals use these environments in spring and summer on the Portuguese coast. Transient marine fishes were sampled monthly over a two‐year period in four tidal pools of a rocky reef on the west Portuguese coast. The diet composition in the tidal pools of the most abundant marine fish larvae/juveniles, Diplodus sargus and Atherina spp., were investigated. Stomach and gut contents of 483 individuals (354 D. sargus ranging in total length from 9 to 87 mm and 134 Atherina spp. ranging in total length from 10 to 31 mm) were analyzed and dietary indices estimated for the different developmental stages. The diet of D. sargus composed mainly harpacticoid copepods, chironomid larvae, ostracods, chironomid adults and amphipods; whereas the diet of Atherina spp. was mainly harpacticoid copepods, ostracods and gastropods. Along the ontogenetic development, the proportions and diversity of food items in the D. sargus diet varied. Importance of the harpacticoid copepods decreased with increasing fish size, while that of amphipods and isopods increased. Larvae and juvenile D. sargus and Atherina spp. found in rocky reef tidal pools are opportunistic consumers of a wide range of prey and thus take advantage of the high prey availability in these habitats.

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Food resource use in a tropical eastern Pacific tidepool fish assemblage

Cited by 25 publications

References 61 publications

Feeding guilds and food resource partitioning in a lake fish assemblage: an ontogenetic approach

Feeding guilds and food resource partitioning in a lake fish assemblage: an ontogenetic approach

Dietary niche differentiation of five sympatric species of Platycephalidae

Diet of marine fish larvae and juveniles that use rocky intertidal pools at the Portuguese coast

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