Food resource partitioning and trophic morphology of <i>Brevoortia gunteri</i> and <i>B. patronus</i>

Castillo-Rivera, Manuel; Kobelkowsky, Abraham; Zamayoa, V.

doi:10.1111/j.1095-8649.1996.tb01781.x

Cited by 21 publications

(20 citation statements)

References 21 publications

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“…Fish abundance peaked during these two periods coinciding with peaks in primary production in Pueblo Viejo Lagoon in March–May and July–September (De la Lanza & Cantú 1986; Contreras 1995). Thus, during March–May when phytoplankton and zooplankton peaked, filtering phytoplanktivores ( C. edentulus and B. gunteri : Castillo–Rivera et al. 1996; Castillo–Rivera & Kobelkowsky 2000) and zooplanktivores ( Anchoa spp.)…”

Section: Discussionmentioning

confidence: 99%

Diel and seasonal variability in the fish community structure of a mud-bottom estuarine habitat in the Gulf of Mexico

et al. 2010

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We hypothesized that temporal variation in fish species composition and community structure in a low complexity habitat in the Pueblo Viejo Lagoon, Mexico, is influenced by diel light/dark cycles and tidal stage, and by seasonal changes in salinity and temperature. We collected a total of 17,661 individuals during 2‐h interval sampling over six bi‐monthly 24‐h sampling cycles representing 53 species, of which 11 (∼20%) were previously unknown in the system. Diel variation indicated that significantly higher numbers of individuals and species were caught at night, whereas diversity and evenness were higher during the day. Species richness was significantly higher in July and January, whereas diversity and evenness peaked around May; both were correlated with temperature. Diel variation in species composition was influenced primarily by the light/dark cycle. Cluster analyses of each diel cycle separated fish assemblages from midday samples from those of nocturnal samples, separated by an extended wide transition period as fish moved at dawn and during the late afternoon/dusk. Significant shifts (as determined by MANOVA) in assemblage structure occurred between months. Canonical correspondence analysis showed that temperature and day/night effects were the most important environmental variables structuring the fish community. This constrained ordination also defined species with specific habitat preferences as follows: (i) diurnal, warm temperature species (mainly planktivores) (Brevoortia gunteri, Cetengraulis edentulus, Diapterus auratus, and Membras martinica); (ii) nocturnal, warm temperature species (mainly predators) (Citharichthys spilopterus, Cathorops melanopus, and Bairdiella spp.); and (iii) low temperature, diurnal species (Brevoortia patronus and Mugil curema) or those with twilight and nocturnal distributions (Anchoa mitchilli, the most numerically abundant species). Our results indicate that diel and seasonal changes in fish community structure were mainly related to day/night cycles and temperature regimes.

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Section: Discussionmentioning

confidence: 99%

Diel and seasonal variability in the fish community structure of a mud-bottom estuarine habitat in the Gulf of Mexico

et al. 2010

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“…Winemiller & Taylor 1987). For example, intestine lengths and gill raker morphology are known to be discriminant features among herbivorous, carnivorous and omnivorous fishes (Gatz 1981, Bowen 1983, Castillo-Rivera et al 1996. Apart from these classical examples, however, evidence of a clear relationship between ecomorphological characteristics and fish diets has been mixed, and even when statistically significant, is often rather weak and of questionable biological importance (Ibanez et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Predicting trophic guild and diet overlap from functional traits: statistics, opportunities and limitations for marine ecology

Albouy¹,

Guilhaumon²,

Villéger³

et al. 2011

Mar. Ecol. Prog. Ser.

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Fish diets provide information that can be used to explore and model complex ecosystems, and infer resource partitioning among species. The exhaustive sampling of prey items captured by each species remains, however, a demanding task. Therefore, predicting diets from other variables, such as functional traits, may be a valuable method. Here, we attempted to predict trophic guild and diet overlap for 35 fish species using 13 ecomorphological traits related to feeding ecology. We compared linear discriminant analysis and random forest (RF) classifiers in their ability to predict trophic guild. We used generalized dissimilarity modelling to predict diet overlap from functional distances between species pairs. All models were evaluated using the same cross-validation procedure. We found that fish trophic guilds were accurately predicted by an RF classifier, even with a limited number of traits, when no more than 7 guilds were defined. Prediction was no longer accurate when finer trophic guilds were created (8 or more guilds), whatever the combination of traits. Furthermore, predicting the degree of diet dissimilarity between species pairs, based on their ecomorphological traits dissimilarities, was profoundly unreliable (at least 76% of unexplained variation). These results suggest that we can predict fish trophic guilds accurately from ecomorphological traits, but not diet overlap and resource partitioning because of inherent versatility in fish diets. More generally, our statistical framework may be applied to any kind of marine organism for which feeding strategies need to be determined from traits. KEY WORDS: Generalized dissimilarity modeling · Mediterranean · Fish · Non-linear model · Random forest · VersatilityResale or republication not permitted without written consent of the publisher Mar Ecol Prog Ser 436: 17-28, 2011 ing biotic indicators relevant to human impacts (SosaLopez et al. 2005). In addition, overlap in diet composition and resource partitioning between species is a key element of interspecific competition that can determine stable coexistence (Sala & Ballesteros 1997, Colloca et al. 2010. Determining the level of diet overlap among species is, therefore, also a major tool in predicting extirpations of species as a result of competitive interactions with invasive species (Karlson et al. 2007, Glen & Dickman 2008, Arismendi et al. 2009, Gregory & Macdonald 2009, Zeug et al. 2009).In practice, identifying the diet composition of species is a very time-consuming and demanding task with many potential biases. Indeed, a complete knowledge of prey items targeted by omnivorous species is unrealistic in prey-rich communities (Araújo et al. 2008). Diet composition is often assessed using stomach contents, which are influenced by many temporal (Lehikoinen 2005, Horppila 2009) and spatial factors (e.g. opportunistic behaviors; Link & Garrison 2002). Hence stomach content analysis is a time-consuming method that can only provide a fragmentary image of a species' diet.An alternative approach to ...

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“…One approach to determine the potential for similarity or dissimilarity of the diet is morphological analysis of the organs used for feeding, and there have been many studies that use morphological data for the purpose of explaining the differences in the diets among species of fishes (Stoner & Livingston, 1984; Karpouzi & Stergiou, 2003; Pouilly et al ., 2003). In particular, gill raker morphology is known to play an important role in the feeding behaviour of planktivorous fishes (Gerking, 1994), and therefore it has often been adopted for the purpose of explaining the differences in the diets of planktivorous fishes (MacNeil & Brandt, 1990; Castillo‐Rivera et al ., 1996).…”

Section: Introductionmentioning

confidence: 99%

Feeding habits and gill raker morphology of three planktivorous pelagic fish species off the coast of northern and western Kyushu in summer

Tanaka

Aoki

Ohshimo

2006

Journal of Fish Biology

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Feeding habits and gill raker morphology were examined for the three major planktivorous pelagic fishes, Japanese anchovy Engraulis japonicus, Pacific round herring Etrumeus teres and Japanese jack mackerel Trachurus japonicus, off the northern and western coasts of Kyushu, in the north-eastern part of the East China Sea in the summer months of 2001. Using fishes in the same size range (80-140 mm, standard length), the stomach contents of the three fish species were compared. The diet of the Japanese anchovy mainly consisted of Oncaeidae copepods, while the diets of the Pacific round herring and Japanese jack mackerel were dominated by calanoid copepods at all stations. Comparisons between prey size in the stomach, zooplankton size in the water and gill raker morphology suggested that the stomach contents of the three species were characterized mainly by the difference in the feeding behaviour between Japanese anchovy (filter-feeding) and the other two species (particulate-feeding), rather than by the difference in the morphology of feeding apparatus only. It was concluded that behavioural adaptations in the feeding of these pelagic fishes brought about trophic partitioning to some degree in this pelagic ecosystem in summer. Although the diets of these three species overlapped to some extent, there was still little likelihood of competition between the Japanese anchovy and the other two species. The potential for competition between the Pacific round herring and the Japanese jack mackerel is discussed.

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Food resource partitioning and trophic morphology of Brevoortia gunteri and B. patronus

Cited by 21 publications

References 21 publications

Diel and seasonal variability in the fish community structure of a mud-bottom estuarine habitat in the Gulf of Mexico

Diel and seasonal variability in the fish community structure of a mud-bottom estuarine habitat in the Gulf of Mexico

Predicting trophic guild and diet overlap from functional traits: statistics, opportunities and limitations for marine ecology

Feeding habits and gill raker morphology of three planktivorous pelagic fish species off the coast of northern and western Kyushu in summer

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