identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
592F87F1FA42FFF9297BF91DFEC9FE1F.text	592F87F1FA42FFF9297BF91DFEC9FE1F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Psammobatis extenta	<div><p>Psammobatis extenta .</p><p>The stomach contents of 83 individuals were analyzed; only one lacked contents and was omitted from the analyses. The specimens measured between 9.5 cm and 16.3 cm disc width. Of the 82 stomachs analyzed, 40 were from females (9.5-16.3 cm DW) and 42 from males (11.1-15.8 cm DW); 8 were from juveniles (9.5- 12.4 cm) and 74 from adults (13.0- 16.3 cm). The adult male with the smallest DW measured 13.0 cm, and the smallest adult females measured 13.4 cm.</p><p>The cumulative prey curve (Fig. 2b) stabilized with about 50 stomachs analyzed, which indicates that the number of stomachs examined was adequate for a dietary study of this species in the sampled area. The items found were Crustaceans, Teleosts, Polychaetes and Nematodes (Tab. 3). Crustaceans were the most important, mainly because of the importance of the caridean shrimp Leptochela sp., which showed the highest value of %IAi, followed by unidentified Shrimp.</p><p>The evaluation of the feeding strategy and niche width (Fig. 3) indicated that unidentified Shrimp was the dominant item in the diet, with the presence of diverse rare items such as Stomatopoda, unidentified Nematodes, and Amphipoda, among others (Fig. 3c). With respect to the groups (Fig. 3d), Crustaceans were dominant, Teleosts were important in the diet of only some individuals, and Polychaetes and Nematodes were rare. The species showed a carcino-benthophagous diet. The index of niche width was 0.15, indicating that P. extenta has a narrow niche, with high importance of a single item and low importance of the others, in agreement with the result obtained using the method of Costello (1990).</p><p>The SIMPER analyses showed a similarity of 43.82% between the sexes, and Leptochela sp. contributed 31.35% of this similarity. Crustaceans showed high importance for both sexes, followed by Teleosts. Shrimp was the most important item; for females, Leptochela sp. was the main item, and for males, unidentified Shrimp was the most important (Tab. 3).</p></div>	https://treatment.plazi.org/id/592F87F1FA42FFF9297BF91DFEC9FE1F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Viana, Alessandra F.;Valentin, Jean L.;Vianna, Marcelo	Viana, Alessandra F., Valentin, Jean L., Vianna, Marcelo (2017): Feeding ecology of elasmobranch species in southeastern Brazil. Neotropical Ichthyology 15 (2): e 160176, DOI: 10.1590/1982-0224-20160176, URL: http://dx.doi.org/10.1590/1982-0224-20160176
592F87F1FA42FFFD297BFC3DFBCFF9F1.text	592F87F1FA42FFFD297BFC3DFBCFF9F1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Psammobatis rutrum Jordan 1891	<div><p>Psammobatis rutrum .</p><p>Only nine stomachs were analyzed, all of them with contents. The individuals measured between 13.5 and 16.0 cm disc width; all were adults, including four females (15.2-16.0 cm) and five males (13.5-14.0 cm).</p><p>The cumulative prey curve (Fig. 2a) rose steadily with no tendency to stabilize, indicating that analyzing a larger number of stomachs would be necessary for a more complete dietary study for this species in the region. Three groups of food items were found: Crustaceans, Teleosts and Polychaetes (Tab. 2). Crustaceans were the most important component of the diet, and Teleosts and Polychaetes were also important.</p><p>Evaluation of the feeding strategy and niche width (Fig. 3) did not indicate the presence of a single dominant item in the diet, but of items that were important for some individuals (Fig. 3a). With respect to the groups (Fig. 3b), Crustaceans were dominant, Teleosts were important for some individuals, and Polychaetes were rare. The diet of P. rutrum appeared to be basically carcino-benthophagous. The value of the trophic-niche width was 0.08, indicating a very narrow niche with a high importance of a few items and no single item dominating.</p></div>	https://treatment.plazi.org/id/592F87F1FA42FFFD297BFC3DFBCFF9F1	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Viana, Alessandra F.;Valentin, Jean L.;Vianna, Marcelo	Viana, Alessandra F., Valentin, Jean L., Vianna, Marcelo (2017): Feeding ecology of elasmobranch species in southeastern Brazil. Neotropical Ichthyology 15 (2): e 160176, DOI: 10.1590/1982-0224-20160176, URL: http://dx.doi.org/10.1590/1982-0224-20160176
592F87F1FA47FFF82ACEFCE3FBB7FD5F.text	592F87F1FA47FFF82ACEFCE3FBB7FD5F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Rhizoprionodon lalandi (Valenciennes 1839)	<div><p>Rhizoprionodon lalandi .</p><p>Of the 43 stomachs analyzed, 5 were omitted because of lack of contents. These sharks measured between 49.4 and 74.0 cm TL. Of the 37 remaining stomachs, 16 were from females (52.0-74.0 cm TL) and 21 from males (49.4-67.2 cm TL); with 14 from juveniles (49.4-57.7 cm TL) and 23 from adults (54.0-74.0 cm TL). The smallest adult male measured 54.0 cm TL, and the smallest adult female 57.0 cm.</p><p>The cumulative prey curve (Fig. 2d) rose continuously, indicating the need to sample more stomachs for a more complete study of feeding in the region. The food items were Teleosts, Elasmobranchs and Cephalopods (Tab. 5). In the total sample, Teleosts were the most important, with 99.9% IAi; Teleost fragments showed the highest FO and IAi; and Dactylopterus volitans was very important. Elasmobranchs and Cephalopods were represented by an elasmobranch egg and the beak of a squid ( Doryteuthis plei).</p><p>The trophic niche width was 0.01, i.e. very narrow, with high importance of a few food items, in agreement with the method of Costello (1990) (Figs. 3 g-h). A single item, Teleost fragments, dominated and the other items were rare, indicating an ichthyophagous species. The food of males and females (Tab. 5) showed about 90.4% similarity in the SIMPER analysis. For both males and females, Teleosts were dominant, with a high %IAi, and fish fragments showed the highest importance. Elasmobranchs and Cephalopods were found only in females and with low importance. The food of juveniles and adults (Tab. 5) showed about 91.70% similarity in the SIMPER analysis. In this case, Teleosts dominated in the prey of both juveniles and adults, and Teleost fragments were the most important item.</p></div>	https://treatment.plazi.org/id/592F87F1FA47FFF82ACEFCE3FBB7FD5F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Viana, Alessandra F.;Valentin, Jean L.;Vianna, Marcelo	Viana, Alessandra F., Valentin, Jean L., Vianna, Marcelo (2017): Feeding ecology of elasmobranch species in southeastern Brazil. Neotropical Ichthyology 15 (2): e 160176, DOI: 10.1590/1982-0224-20160176, URL: http://dx.doi.org/10.1590/1982-0224-20160176
592F87F1FA46FFF82AC7FE22FD6BFCDF.text	592F87F1FA46FFF82AC7FE22FD6BFCDF.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Rioraja agassizii (Muller & Henle 1841)	<div><p>Rioraja agassizii .</p><p>The stomach contents of 112 individuals were analyzed, of which eight were empty and were omitted from the analysis. The specimens analyzed measured between 14.8 and 43.3 cm disc width. Of the total of 104 stomachs, 55 were from females (15.1-43.3 cm DW) and 49 from males (14.8-31.6 cm DW); with 22 from juveniles (14.8-35.5 cm DW) and 82 from adults (25.1-43.3 cm DW). The adult male with the smallest DW measured 25.1 cm, and the smallest adult female measured 33.4 cm.</p><p>The cumulative prey curve (Fig. 2c) tended to stabilize with about 95 stomachs analyzed, indicating that the number of stomachs was sufficient to study the species’ diet in the sampling area. The food items were Crustaceans, Teleosts and Nematodes (Tab. 4). Crustaceans were the most important group with respect to %FO, %W and %IAi, followed by Teleosts. Of these items, Teleost fragments were most important, together with Portunidae .</p><p>The evaluation of the feeding strategy and niche amplitude (Fig. 3) indicated that Teleost fragments were the dominant item, and unidentified Shrimp was also important (Fig. 3e). Of the groups (Fig. 3f), Crustaceans and Teleosts were dominant, and Nematodes were rare. The species’ diet was basically carcino/ichthyo-benthophagous. The value for niche width was 0.03, i.e. very narrow, with a few important items in the diet.</p><p>The SIMPER analysis showed a similarity of 52.4% between males and females, Teleost fragments contributed 57.6% of this similarity. Crustaceans showed the highest values of %IAi for both sexes (Tab. 4), but were more important for males. In males, Teleost fragments were an important item, followed by Penaeoidea (Dendrobranchiata) and Leptochela sp. For females, Teleost fragments were most important, followed by Portunidae and P. spinicarpus .</p><p>In the ontogenetic analysis, the similarity in SIMPER was 46% and Teleost fragments contributed 55%. For juveniles (Tab. 4), unidentified shrimp were quite important. For the adults, Brachyura, Portunidae and P. spinicarpus had higher importance. Teleosts were more important for adults than for juveniles, and Nematodes were more important for juveniles.</p></div>	https://treatment.plazi.org/id/592F87F1FA46FFF82AC7FE22FD6BFCDF	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Viana, Alessandra F.;Valentin, Jean L.;Vianna, Marcelo	Viana, Alessandra F., Valentin, Jean L., Vianna, Marcelo (2017): Feeding ecology of elasmobranch species in southeastern Brazil. Neotropical Ichthyology 15 (2): e 160176, DOI: 10.1590/1982-0224-20160176, URL: http://dx.doi.org/10.1590/1982-0224-20160176
