Foraging activity and behaviour of two goatfish species (Perciformes: Mullidae) at Fernando de Noronha Archipelago, tropical West Atlantic

Krajewski, João Paulo; Bonaldo, Roberta M.; Sazima, Cristina; Sazima, Iván

doi:10.1007/s10641-006-9046-z

Cited by 33 publications

(27 citation statements)

References 14 publications

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“…Fulton and Bellwood 2002b;Berumen et al 2005;Bonaldo et al 2005;Krajewski et al 2006), these species would be expected to be more abundant in sites with higher cover of their preferred foraging substrata. However, our overall results are not clear enough to evaluate whether fish abundance is correlated to foraging substratum availability at FN.…”

Section: Relationships Of Fish Density and Biomass And Environmental mentioning

confidence: 99%

Reef fish community structure of the Fernando de Noronha Archipelago (Equatorial Western Atlantic): the influence of exposure and benthic composition

Krajewski

Floeter

2011

Environ Biol Fish

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We studied the reef fish assemblage of eight reefs within the oceanic archipelago of Fernando de Noronha, off northeastern Brazil. In a total of 91 belt transects (20×2 m) we recorded 60 species from 28 families. The 25 most abundant species accounted for about 98% of all fish recorded in this study and most of these species are widely distributed in the Western Atlantic. The majority of fish counted were planktivores (37.0%), followed by mobile invertebrate feeders (28.5%), territorial herbivores (11.3%), roving herbivores (10.5%), omnivores (7.1%), macrocarnivores (6.5%) and sessile invertebrate feeders (0.03%). In terms of biomass, roving herbivores were the most representative (41.8%), followed by mobile invertebrate feeders (19.9%), macrocarnivores (14.3%), omnivores (14.0%), piscivores (8.3%), planktivores (1.4%), territorial herbivores (0.3%), and sessile invertebrate feeders (0.03%). Overall, density and biomass of fishes were positively correlated with coral cover and depth, and negatively correlated with wave exposure. These relationships are probably a response to the habitat complexity provided by the higher coral cover in deeper reefs (>10 m) of the archipelago or to the lower water turbulence below 10 m deep. Carnivores and mobile invertebrate feeders were mainly influenced by depth and non-consolidated substratum, planktivores and omnivores by wave exposure and herbivores by algal cover. Although our results suggest that habitat characteristics may play a role in determining the distribution of some fish species, we also found several habitat generalists, suggesting that the community is dominated by versatile species.

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Section: Relationships Of Fish Density and Biomass And Environmental mentioning

confidence: 99%

Reef fish community structure of the Fernando de Noronha Archipelago (Equatorial Western Atlantic): the influence of exposure and benthic composition

Krajewski

Floeter

2011

Environ Biol Fish

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“…However, feeding behavioral switches within the same growth stage appear uncommon in reef fish species during their early stages, as observed in the current study. Krajewski et al (2006) reported that different foraging activities and behavior between species can minimize potential resource overlaps, thus minimizing competition. They also found that co-occurring species of mullid fishes, Mulloidichthys martinicus and Pseudupeneus maculatus differ by their foraging modes and their distribution in the water column.…”

Section: Diel Switches In Feeding Tacticsmentioning

confidence: 99%

Feeding behavior of leaf-like juveniles of the round batfish Platax orbicularis (Ephippidae) on reefs of Kuchierabu-jima Island, southern Japan

Barros

Sakai

Hashimoto

et al. 2007

J Ethol

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Feeding behavior of juvenile batfish Platax orbicularis, which presents a mimic state resembling a fallen leaf drifting on the water surface, were surveyed on reefs off Kuchierabu-jima Island, southern Japan. The fish consistently showed drifting swimming patterns on the surface during daylight hours, and fed in a picking-feeding manner on algae covering floating materials or substrates near the water surface. The fish drastically switched to planktivory during the night as they actively hunted free zooplanktonic particles through combined ram and suction feeding manners. Stomach content analysis supported that the fish adopted different feeding tactics, targeting different food items between the two diel periods. Even without an abrupt change of habitat use, due to its mimic state, juveniles of P. orbicularis explore different preys according to their daily activities.

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“…Partitioning of food resources is thought to occur when species that overlap in their distribution show differential predation to minimize competition for food (Krajewski et al 2006). The sympatric gurnard species in the present study displayed a low competition potential in terms of their food resources.…”

Section: Resource Partitioning Among the Three Gurnard Speciesmentioning

confidence: 99%

Diets and Resource Partitioning among Three Sympatric Gurnards in Northeastern Tasmanian Waters, Australia

et al. 2017

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Dietary niches can support the coexistence of closely related sympatric species in marine systems, which can lead to the presence of greater abundances of those species that can potentially support their fisheries or greater abundances for other fish species that prey upon those species. Dietary relationships for three species of gurnard (Family Triglidae) that occur together in the benthic coastal environment of northeastern Tasmania, Australia (Red Gurnard Chelidonichthys kumu, Grooved Gurnard Lepidotrigla modesta, and Roundsnout Gurnard Lepidotrigla mulhalli), were examined for the presence of such dietary niches. The species are either fishery-important (Red Gurnard) or provide prey (Grooved Gurnard and Roundsnout Gurnard) for fishery-important species (e.g., Platycephalidae and Zeidae). Based on stomach content analyses, all three gurnards were shown to be bottomfeeding carnivores that consumed mainly benthic crustaceans, particularly decapods and amphipods, with teleosts also being important in the diets of only the larger Red Gurnard. Nonmetric multidimensional scaling ordination and multivariate analyses based on volumetric contributions of different prey taxa to the stomach contents revealed significant differences in dietary composition among all three species, implying a partitioning of food resources. Size-related and temporal changes in dietary composition were each significant among the three gurnards, but there were no interactions between body size and time. Principal components analysis of head and mouth morphology demonstrated that mouth protrusiveness was the dominant morphological difference among species, which may in part account for the niche partitioning observed from the stomach content analysis. Given the important role of gurnards in benthic food webs, these relationships will improve the specification of ecosystembased fisheries models and their ability to predict the effects of environmental and anthropogenic perturbations.

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Foraging activity and behaviour of two goatfish species (Perciformes: Mullidae) at Fernando de Noronha Archipelago, tropical West Atlantic

Cited by 33 publications

References 14 publications

Reef fish community structure of the Fernando de Noronha Archipelago (Equatorial Western Atlantic): the influence of exposure and benthic composition

Reef fish community structure of the Fernando de Noronha Archipelago (Equatorial Western Atlantic): the influence of exposure and benthic composition

Feeding behavior of leaf-like juveniles of the round batfish Platax orbicularis (Ephippidae) on reefs of Kuchierabu-jima Island, southern Japan

Diets and Resource Partitioning among Three Sympatric Gurnards in Northeastern Tasmanian Waters, Australia

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