Food habits of the brown ray<i>Raja miraletus</i>(Chondrichthyes: Rajidae) from the Gulf of Gabès (Tunisia)

Kadri, Hasna; Marouani, Sondes; Bradaï, Mohamed Nejmeddine; Bouaïn, Abderrahmen

doi:10.1080/17451000.2013.797583

Cited by 9 publications

(6 citation statements)

References 30 publications

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“…Dasyatis pastinaca and smaller skates, like R. polystigma and R. miraletus, showed the highest levels of Crustacea in their diets. All these species had a preference for endobenthic prey, which contrasts with observations from previous studies (Smale and Cowley 1992;Ismen 2003;Yeldan et al 2009;Saglam et al 2010;Šantić et al 2011;Valls et al 2011;Kadri et al 2014b;Barría et al 2015;Saadaoui et al 2015). To our knowledge, the importance of Mysida (Gastrosaccus spp.…”

Section: General Diet Descriptioncontrasting

confidence: 83%

Resource partitioning among sympatric elasmobranchs in the central-western Mediterranean continental shelf

et al. 2019

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Section: General Diet Descriptioncontrasting

confidence: 83%

Resource partitioning among sympatric elasmobranchs in the central-western Mediterranean continental shelf

et al. 2019

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“…Differences in diet composition of several predators may reflect the geographical peculiarities in fauna composition (Kadri et al, 2014 ) Molluscs were also generally absent in the diets of other skate species and when present contributed little to diet composition (Ebert & Bizzarro, 2007). Therefore it is likely that molluscs were incidentally ingested.…”

Section: Discussionmentioning

confidence: 97%

“…Differences in diet composition of several predators may reflect the geographical peculiarities in fauna composition (Kadri et al ., 2014 )…”

Section: Discussionmentioning

confidence: 99%

Diet and feeding strategy of thornback ray,Raja clavata(Chondrichthyes: Rajidae) from the Gulf of Gabes (Tunisia—Central Mediterranean Sea)

et al. 2014

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Food and feeding strategy of the thornback ray, Raja clavata, were studied from stomach contents analysis of specimens caught monthly in the Gulf of Gabes. The data were analysed according to sex, size and season. At total of 1280 stomachs was examined, from specimens ranging from 14 to 110 cm total length (T L ), of which 1076 (83.98%) contained food. Thornback ray feed mainly on teleosts, crustaceans and cephalopods, whereas gastropods and polychaetes are occasionally consumed. Significant differences were found between the diets of males and females; however, ontogenetic changes were also detected, with crustaceans constituting the greatest proportion of the diet of smaller rays. Both teleosts and cephalopods increased in importance with growth of the skates. Prey diversity increased with size; large and mobile prey species were more commonly found in the diet of larger skates. Diet composition showed seasonal variations. Quantitative analyses and graphical methods indicate that the thornback ray is a generalist feeder.

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“…Considering the foods consumed by R. miraletus according to size groups, Šantić et al (2013) stated that specimens smaller than 25.0 cm mostly feed on amphipoda and mysidacea, while specimens larger than 25.0 cm feed on decapoda, teleost and cephalopoda in the Adriatic Sea. Kadri et al (2014c) determined that R. miraletus specimens smaller than 38 cm fed on mysidacea and amphipoda, while specimens larger than 38 cm fed on decapoda, cephalopoda and isopoda, mostly teleost in the Gulf of Gabes. In this study, when we look at the food groups consumed by R. miraletus specimens according to size groups, it was observed that crustaceans were consumed in every size group, and food groups diversified (crustaceans, brachyura, teleost, isopoda, cephalopoda, stomatopoda, nematoda) with an increase in length (>40cm).…”

Section: Discussionmentioning

confidence: 99%

Feeding habits of two skate species, Raja miraletus Linnaeus, 1758 and Dipturus oxyrinchus (Linnaeus, 1758) (Chondrichthyes, Rajidae), around the Gökçeada Island (Northern Aegean Sea)

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2023

EgeJFAS

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This study investigated the feeding habits of Raja miraletus Linnaeus, 1758 and Dipturus oxyrinchus (Linnaeus, 1758). For the purpose of this study, the specimens were obtained monthly from the commercial trawlers operating around the Gökçeada Island in the Northern Aegean Sea between February 2019 and February 2020. A total of 29 (24 female and 5 male) brown rays (Raja miraletus) and 36 (20 female and 16 male) longnosed skates (Dipturus oxyrinchus) were captured. The total lengths of the R. miraletus specimens ranged between 24.0 cm and 53.9 cm, while the D. oxyrinchus specimens measured between 17.1 cm and 85.0 cm. Total length-weight relationships of R. miraletus and D. oxyrinchus specimens, respectively; W=0.0002TL3.92 (R2=0.97) and W=0.0007TL3.43 (R2=0.97) were calculated. The analysis of the stomach content of the specimens showed that crustacea were the primary and the most important prey group for R. miraletus (IRI% = 67.09), followed by teleosts (IRI% = 1.00) and cephalopods (IRI% = 0.45). The D. oxyrinchus specimens were determined to primarily feed on crustacea (IRI% = 74.3), followed by teleosts (IRI% = 6.50) and nematoda (IRI% = 0.40).

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Food habits of the brown rayRaja miraletus(Chondrichthyes: Rajidae) from the Gulf of Gabès (Tunisia)

Cited by 9 publications

References 30 publications

Resource partitioning among sympatric elasmobranchs in the central-western Mediterranean continental shelf

Resource partitioning among sympatric elasmobranchs in the central-western Mediterranean continental shelf

Diet and feeding strategy of thornback ray,Raja clavata(Chondrichthyes: Rajidae) from the Gulf of Gabes (Tunisia—Central Mediterranean Sea)

Feeding habits of two skate species, Raja miraletus Linnaeus, 1758 and Dipturus oxyrinchus (Linnaeus, 1758) (Chondrichthyes, Rajidae), around the Gökçeada Island (Northern Aegean Sea)

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