Food resource utilization of the skates Rioraja agassizii (Müller & Henle, 1841) and Psammobatis extenta (Garman, 1913) on the continental shelf off Ubatuba, South-eastern Brazil

The feeding habits of Rioraja agassizii (syn. Raja agassizii) and Psammobatis extenta (syn. Psammobatis glansdissimilis) of the South-eastern Brazilian coast were studied by means of stomach content analysis. The samples were obtained on eight seasonal oceanographic cruises, carried out between October 1985 and July 1987. The importance of each food item was evaluated on the basis of the Index of Relative Importance and the feeding similarity by Percentage of Similarity. The results indicated that both species are benthic feeders, preying mainly on Crustacea, especially Amphipoda, Caridea and Brachyura. Teleostei were also important for R. agassizii. Seasonal variation of the diet seems to be associated with the availability of the prey, whose distribution and abundance are related to the dynamics of the water masses of the region. Juveniles and adults of P. extenta exploited the same resources while juveniles and adults of R. agassizii presented low diet similarity during most of the year. Caridea were an important food for all length classes of R. agassizii, while Amphipoda were for smaller specimens, and Teleostei for larger ones. The feeding overlap between the two species was higher during autumn 1986, winter 1986 and winter 1987.

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Observations on the diet and feeding habits of the epaulette shark, Hemiscyllium ocellatum (Bonnaterre), on Heron Island Reef, Great Barrier Reef, Australia

Marine and Freshwater Research ◽

10.1071/mf97026 ◽

1998 ◽

Vol 49 (7) ◽

pp. 753 ◽

Cited By ~ 28

Author(s):

M. R. Heupel ◽

M. B. Bennett

Keyword(s):

Content Analysis ◽

Reef Flat ◽

Prey Capture ◽

Feeding Habits ◽

Stomach Content Analysis ◽

Relative Importance ◽

Barrier Reef ◽

Epaulette Shark ◽

Index Of Relative Importance ◽

Prey Items

The diet and feeding habits of the epaulette shark, Hemiscyllium ocellatum, were investigated through stomach content analysis. Five groups of prey items were found. The index of relative importance showed worms and crabs to be of greatest value at 51.3% and 40.1% respectively. The three minor prey groups were shrimps (7.7%), small fishes (0.7%) and amphipods (0.3%). Epaulette sharks tend to be crepuscular, although feeding bouts may occur at any time. They appear to be opportunistic predators, using olfaction and electroreception in prey capture. This species appears to be an important benthic predator in the reef flat environment on Heron Island Reef.

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Life history traits of the sand stargazerDactyloscopus tridigitatus(Teleostei: Blennioidei) from south-eastern Brazilian coast

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315411001998 ◽

2011 ◽

Vol 93 (2) ◽

pp. 397-403 ◽

Cited By ~ 2

Author(s):

Rogério Luiz Teixeira ◽

Eduardo Hoffman de Barros ◽

Rodrigo Barbosa Ferreira ◽

Rafael Magno Costa Melo ◽

Luiz Fernando Salvador-Jr

Keyword(s):

Paternal Care ◽

Feeding Habits ◽

Reproductive Period ◽

Brazilian Coast ◽

Strongly Correlated ◽

South Eastern ◽

Total Length ◽

Eastern Brazil ◽

Female Total ◽

One Year

Individuals of the sand stargazerDactyloscopus tridigitatuswere collected monthly over a period of one year in an urban-sandy beach in south-eastern Brazil. We sampled 57 males, 64 females, and 6 juveniles, indicating a sex-ratio of approximately 1:1. Total length and weight did not differ significantly between sexes, showing no sexual dimorphism in size. The growth ofD. tridigitatuswas highly positive allometric and the correlation coefficient was significant for both sexes. Males were observed carrying two egg clumps under each enlarged pectoral fin during most of the year. In contrast, females showed a more restricted reproductive period, concentrated during the austral rainy season. The number of eggs in each clump carried by males did not differ significantly from the number of vitellogenic oocytes of mature females. The number of eggs carried by males was weakly correlated to male total length; however, female fecundity was strongly correlated to female total length.Dactyloscopus tridigitatusconsumed a high variety of prey items, including crustaceans, annelids, molluscs, teleosts, insects and eggs. Isopods were the most important component of the diet followed by polychaetes and amphipods. We concluded that promiscuous breeding, paternal care behaviour and invertivorous feeding habits seem to be important traits for the species' success in the studied habitat.

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Feeding habits of wahoo (Acanthocybium solandri) in the eastern Pacific Ocean

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315416000850 ◽

2016 ◽

Vol 97 (7) ◽

pp. 1505-1510 ◽

Cited By ~ 2

Author(s):

Molker Mendoza-ávila ◽

Gabriela Zavala-Zambrano ◽

Felipe Galván-Magaña ◽

Peggy Loor-Andrade

Keyword(s):

Niche Breadth ◽

Feeding Habits ◽

Stomach Content Analysis ◽

Generalist Predator ◽

Relative Importance ◽

Eastern Pacific Ocean ◽

Dosidicus Gigas ◽

The Pacific ◽

Specific Index ◽

Index Of Relative Importance

Stomach content analysis was used to assess the feeding habits of Acanthocybium solandri based on samples obtained on purse seine fishing trips off the Pacific coasts of Central and South America. A total of 226 samples were obtained; 160 stomachs contained food and 33 prey taxa were identified. Based on the Prey Specific Index of Relative Importance (%PSIRI), cephalopods and fishes were the main prey groups (50.4 and 49.5% PSIRI). Dosidicus gigas (23.4% PSIRI), Stenoteuthis oualaniensis (9.9% PSIRI) and Argonauta spp. (9.4% PSIRI) were the most representative prey. Acanthocybium solandri is a generalist predator based on the results of the Amundsen analysis and niche breadth (Ba = 1).

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Stomach contents of the marine tucuxi dolphin (Sotalia guianensis) from Rio de Janeiro, south-eastern Brazil

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315407053647 ◽

2007 ◽

Vol 87 (1) ◽

pp. 253-254 ◽

Cited By ~ 29

Author(s):

Ana Paula Madeira Di Beneditto ◽

Salvatore Siciliano

Keyword(s):

Rio De Janeiro ◽

Feeding Habits ◽

Stomach Contents ◽

Additional Information ◽

Sotalia Guianensis ◽

South Eastern ◽

Eastern Brazil ◽

Trichiurus Lepturus ◽

Cynoscion Guatucupa ◽

Janeiro State

Along the central coast of Rio de Janeiro State (22°25′S–23°00′S), south-eastern Brazil, the marine tucuxi dolphin (Sotalia guianensis) feeds on neritic prey that are distributed through the water column and are abundant all year round. The most frequently found species were the teleost fish Trichiurus lepturus, Cynoscion guatucupa, Isopisthus parvipinnis and Porichthys porossisimus. Fish species were more important than cephalopod species in the diet of the marine tucuxi. Back calculations of prey sizes indicated that they feed mainly on young specimens. The present study provided additional information on the feeding habits of the marine tucuxi dolphin.

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Age and growth of the snowy grouper, Epinephelus niveatus, off the Brazilian coast

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315411000142 ◽

2011 ◽

Vol 92 (3) ◽

pp. 633-641 ◽

Cited By ~ 5

Author(s):

Paulo A.S. Costa ◽

Adriana C. Braga ◽

Juan P. Rubinich ◽

Antônio Olinto Ávila-da-Silva ◽

Cassiano M. Neto

Keyword(s):

Life Span ◽

Positive Relationship ◽

Growth Parameters ◽

Age And Growth ◽

Brazilian Coast ◽

Von Bertalanffy ◽

South Eastern ◽

Otolith Analysis ◽

Eastern Brazil ◽

Marginal Increment

The age and growth of the snowy grouper, Epinephelus niveatus, from central and south-eastern Brazil were studied by otolith analysis from a sample of 341 specimens, ranging from 325 to 1216 mm in total length (TL) caught with bottom longlines between 1996 and 1998. Otolith length grew proportionally with the increasing TL of the fish. Marginal increment analysis indicated that a single opaque band forms each year during autumn–winter. The maximum estimated age was 54 years, which significantly extends the previously estimated life-span of 21–29 years for this species. The von Bertalanffy growth parameters for both sexes were estimated as L∞ = 1098.4 mm TL, K = 0.062 year −1 and t0 = –2.68. The study revealed differences in mean length-at-age and size at recruitment, as well as in growth parameters between the central and the south-eastern Brazilian coast, which can be attributed mainly to different fishing pressures. The snowy grouper was found at depths of 82–492 m, and showed a positive relationship between age and depth, suggesting differential movements of older fish to deeper waters.

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Feeding habits of Aspitrigla cuculus (L., 1758) (red gurnard), Lepidotrigla cavillone (Lac., 1802) (large scale gurnard) and Trigloporus lastoviza (Brunn., 1768) (rock gurnard) around Cyclades and Dodecanese Islands (E. Mediterranean)

Mediterranean Marine Science ◽

10.12681/mms.280 ◽

2000 ◽

Vol 1 (1) ◽

pp. 91 ◽

Cited By ~ 11

Author(s):

A. TERRATS ◽

G. PETRAKIS ◽

C. PAPACONSTANTINOU

Keyword(s):

Large Scale ◽

Eastern Mediterranean ◽

Feeding Habits ◽

Stomach Contents ◽

Frequency Of Occurrence ◽

Relative Importance ◽

Bottom Trawling ◽

Percentage Frequency ◽

Index Of Relative Importance

The feeding habits of the three most abundant gurnard species, red gurnard (Aspitrigla cuculus), large scale gurnard (Lepidotrigla cavillone) and rock gurnard (Trigloporus lastoviza) in the eastern Mediterranean (Dodecanese and Cyclades, Greece) are examined. The stomach contents of the gurnard specimens collected in April and September 1996 by bottom trawling were analyzed. The % frequency of occurrence, % number and % weight of prey types in the stomach contents were evaluated. By weight, Mysidacea and Decapoda dominated in the diet of the three species in both seasons, however the Index of Relative Importance, as well as the percentage frequency of occurrence varied. Rock gurnard presented the most diverse diet whereas the diet of large scale and red gurnard were more specialized. High overlap in terms of number was found between rock and large scale gurnard in May. Rock gurnard had the most divers diet in both seasons.

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Aspectos da alimentação natural de Larimus breviceps Cuvier, 1830, proveniente do litoral norte da Paraíba, Brasil

Revista Principia - Divulgação Científica e Tecnológica do IFPB ◽

10.18265/1517-0306a2020v1n52p185-193 ◽

2020 ◽

Vol 1 (52) ◽

pp. 185

Author(s):

Andreza Da Silva Nascimento ◽

Jonas De Assis Almeida Ramos

Keyword(s):

Feeding Habits ◽

Food Composition ◽

Marine Debris ◽

Northern Coast ◽

Relative Importance ◽

Synthetic Material ◽

Fish Feeding ◽

Food Items ◽

Index Of Relative Importance ◽

Social Importance

<p>The knowledge of natural fish feeding is important to understand the species feeding habits and how they interact with the environment. In addition to that, this kind of research can provide relevant data to improve the capture of these animals, considering their economy and social importance. This study aimed to analyze the food composition of Larimus breviceps specimens from the northern coast of Cabedelo city, evaluating the importance of each food item for their diet. The specimens came from the local artisanal fisheries. In laboratory, the individuals were identified, measured and dissected to remove the stomachs content and then examined. Three different analyzes were performed, percentage by frequency of occurrence, by number and by weight, then the index of relative importance (IRI%) was computed. In total, 30 stomachs were analyzed, 15 distinct food items were identified, the most representative prey were fish fragments, Copepoda, Gammaridae, Decapoda (shrimp), algal fragments and synthetic material. Given the results, the diet of this species becomes more diversified as young individuals reach the adults size, and ingest marine debris which indicates an anthropogenic impact.</p>

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Feeding habits of the franciscana dolphin (Pontoporia blainvillei) in south-eastern Brazil

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315420000120 ◽

2020 ◽

Vol 100 (2) ◽

pp. 301-313

Author(s):

Laura Busin Campos ◽

Xênia Moreira Lopes ◽

Ednilson da Silva ◽

Marcos César de Oliveira Santos

Keyword(s):

Feeding Habits ◽

Stomach Contents ◽

Small Fish ◽

South Eastern ◽

Important Prey ◽

Fishing Vessels ◽

Eastern Brazil ◽

Significant Difference ◽

Pontoporia Blainvillei ◽

Franciscana Dolphin

AbstractThis study evaluated the feeding habits of the franciscana dolphin (Pontoporia blainvillei) in south-eastern Brazil. Stomach contents were collected from a total of 145 dead specimens found incidentally caught by fishing vessels or stranded between 2005 and 2015. Fish otoliths, cephalopod beaks and whole non-digested prey were used for prey species identification. A total of 9337 prey items were identified, including 26 species of teleost fishes and three species of cephalopods. The most important prey families were Sciaenidae among fish and Loliginidae among cephalopods. Franciscana dolphins tended to feed on small fish (mean = 5.25 cm) and cephalopods (mean = 8.57 cm). The index of relative importance (IRI) showed that Pellona harroweri and Doryteuthis plei were the most important prey for both males and females. The PERMANOVA test confirmed that there is no significant difference between the feeding habits of different sexes, but detected a significant difference among seasons. Overall, our results show that franciscana dolphins are predominantly ichthyophagous and non-selective in relation to the type of prey, feeding on pelagic, demersal and pelagic-demersal prey.

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Evidence of terrestrial feeding in the arboreal lizard Enyalius bilineatus (Sauria, Polychrotidae) of south-eastern Brazil

Revista Brasileira de Biologia ◽

10.1590/s0034-71082001000100012 ◽

2001 ◽

Vol 61 (1) ◽

pp. 91-94 ◽

Cited By ~ 10

Author(s):

C. ZAMPROGNO ◽

M. das G. F. ZAMPROGNO ◽

R. L. TEIXEIRA

Keyword(s):

Strong Evidence ◽

Food Item ◽

Prey Type ◽

Foraging Strategy ◽

Gut Contents ◽

Important Food ◽

Food Items ◽

South Eastern ◽

Eastern Brazil ◽

Important Food Item

The diet of the arboreal lizard E. bilineatus was assessed based on analysis of gut contents of specimens collected in the remnants of the Atlantic rainforest in Espírito Santo State, south-eastern Brazil. Stomachs of the lizards examined (SVL = 57.0-85.0 mm) contained nine arthropod orders. E. bilineatus utilizes a broad range of arthopodan prey type and sizes, and can be considered an arthropod generalist, which uses a sit-and-wait foraging strategy. Orthoptera represented the most important food item, followed by Dictyoptera and Hymenoptera. Hemiptera, Homoptera, Lepidoptera (larvae), Coleoptera, Araneae, and Diplopoda constituted the remainder of food items. The presence of Diplopoda, which are not generally found on tree trunks, provides particularly strong evidence the E. bilineatus forages in leaf litter on the ground.

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