Notes On The Feeding Habits of the skate Rioraja agassizi (Chondrichthyes, Rajidae) off southeastern Brazil

Bibliographic Details
Main Author: Pasquino, Aline F. [UNESP]
Publication Date: 2011
Other Authors: Vaske-Júnior, Teodoro [UNESP], Gadig, Otto B.F. [UNESP], Barreiros, João P.
Format: Article
Language: eng
Source: Repositório Institucional da UNESP
Download full: http://hdl.handle.net/11449/226586
Summary: Feeding habits of the skate Rioraja agassizi were analyzed in southeastern Brazil from samples obtained along Sao Paulo coast. A total of 258 specimens were examined, ranging between 96 and 532 mm total length. About 57.85% were females and 42.15% were males, resulting in a 1:1.37 sex-ratio to females. From 223 stomachs collected (94 males and 129 females) empty stomachs represented only 1.4%. Nine prey categories were identified: Polychaeta, Copepoda, Cumacea, Isopoda, Gammaridea, Dendrobranchiata, Brachyura, Teleostei, and one non-animal category (nonidentifiable items). Crustaceans were the most important item, indicating that the species has a carcinophagic preference. The presence of fish was just verified in juveniles and some adult individuals, with predominance in summer. Sex, maturity stage and seasonality did not influence the feeding habits of the species.
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spelling Notes On The Feeding Habits of the skate Rioraja agassizi (Chondrichthyes, Rajidae) off southeastern BrazilElasmobranchRajidaeRioraja agassiziSW atlanticTrophic ecologyFeeding habits of the skate Rioraja agassizi were analyzed in southeastern Brazil from samples obtained along Sao Paulo coast. A total of 258 specimens were examined, ranging between 96 and 532 mm total length. About 57.85% were females and 42.15% were males, resulting in a 1:1.37 sex-ratio to females. From 223 stomachs collected (94 males and 129 females) empty stomachs represented only 1.4%. Nine prey categories were identified: Polychaeta, Copepoda, Cumacea, Isopoda, Gammaridea, Dendrobranchiata, Brachyura, Teleostei, and one non-animal category (nonidentifiable items). Crustaceans were the most important item, indicating that the species has a carcinophagic preference. The presence of fish was just verified in juveniles and some adult individuals, with predominance in summer. Sex, maturity stage and seasonality did not influence the feeding habits of the species.UNESP Campus Experimental do Litoral Paulista Praça Infante Dom Henrique, s/n, 11330-900, Sao Vicente, Sao PauloDpt. Ciências Agrárias and Imar Açores Azorean Biodiversity Group, CITA-A Universidade dos Açores, 9701-851 Angra do HeroísmoUNESP Campus Experimental do Litoral Paulista Praça Infante Dom Henrique, s/n, 11330-900, Sao Vicente, Sao PauloUniversidade Estadual Paulista (UNESP)Universidade dos AçoresPasquino, Aline F. [UNESP]Vaske-Júnior, Teodoro [UNESP]Gadig, Otto B.F. [UNESP]Barreiros, João P.2022-04-29T01:26:56Z2022-04-29T01:26:56Z2011-11-07info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article105-109Cybium, v. 35, n. 2, p. 105-109, 2011.0399-0974http://hdl.handle.net/11449/2265862-s2.0-80155165159Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCybiuminfo:eu-repo/semantics/openAccess2022-04-29T01:26:56Zoai:repositorio.unesp.br:11449/226586Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T01:26:56Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Notes On The Feeding Habits of the skate Rioraja agassizi (Chondrichthyes, Rajidae) off southeastern Brazil
title Notes On The Feeding Habits of the skate Rioraja agassizi (Chondrichthyes, Rajidae) off southeastern Brazil
spellingShingle Notes On The Feeding Habits of the skate Rioraja agassizi (Chondrichthyes, Rajidae) off southeastern Brazil
Pasquino, Aline F. [UNESP]
Elasmobranch
Rajidae
Rioraja agassizi
SW atlantic
Trophic ecology
title_short Notes On The Feeding Habits of the skate Rioraja agassizi (Chondrichthyes, Rajidae) off southeastern Brazil
title_full Notes On The Feeding Habits of the skate Rioraja agassizi (Chondrichthyes, Rajidae) off southeastern Brazil
title_fullStr Notes On The Feeding Habits of the skate Rioraja agassizi (Chondrichthyes, Rajidae) off southeastern Brazil
title_full_unstemmed Notes On The Feeding Habits of the skate Rioraja agassizi (Chondrichthyes, Rajidae) off southeastern Brazil
title_sort Notes On The Feeding Habits of the skate Rioraja agassizi (Chondrichthyes, Rajidae) off southeastern Brazil
author Pasquino, Aline F. [UNESP]
author_facet Pasquino, Aline F. [UNESP]
Vaske-Júnior, Teodoro [UNESP]
Gadig, Otto B.F. [UNESP]
Barreiros, João P.
author_role author
author2 Vaske-Júnior, Teodoro [UNESP]
Gadig, Otto B.F. [UNESP]
Barreiros, João P.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Universidade dos Açores
dc.contributor.author.fl_str_mv Pasquino, Aline F. [UNESP]
Vaske-Júnior, Teodoro [UNESP]
Gadig, Otto B.F. [UNESP]
Barreiros, João P.
dc.subject.por.fl_str_mv Elasmobranch
Rajidae
Rioraja agassizi
SW atlantic
Trophic ecology
topic Elasmobranch
Rajidae
Rioraja agassizi
SW atlantic
Trophic ecology
description Feeding habits of the skate Rioraja agassizi were analyzed in southeastern Brazil from samples obtained along Sao Paulo coast. A total of 258 specimens were examined, ranging between 96 and 532 mm total length. About 57.85% were females and 42.15% were males, resulting in a 1:1.37 sex-ratio to females. From 223 stomachs collected (94 males and 129 females) empty stomachs represented only 1.4%. Nine prey categories were identified: Polychaeta, Copepoda, Cumacea, Isopoda, Gammaridea, Dendrobranchiata, Brachyura, Teleostei, and one non-animal category (nonidentifiable items). Crustaceans were the most important item, indicating that the species has a carcinophagic preference. The presence of fish was just verified in juveniles and some adult individuals, with predominance in summer. Sex, maturity stage and seasonality did not influence the feeding habits of the species.
publishDate 2011
dc.date.none.fl_str_mv 2011-11-07
2022-04-29T01:26:56Z
2022-04-29T01:26:56Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Cybium, v. 35, n. 2, p. 105-109, 2011.
0399-0974
http://hdl.handle.net/11449/226586
2-s2.0-80155165159
identifier_str_mv Cybium, v. 35, n. 2, p. 105-109, 2011.
0399-0974
2-s2.0-80155165159
url http://hdl.handle.net/11449/226586
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Cybium
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 105-109
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1797789448908308480

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