Feeding of two amphibian species (Anura: Hylidae) during the low temperatures season and its relationship with energy storage in Santa Fe, Argentina
In environments with thermal and pluvial seasonality such as those of the Middle Paraná River floodplain (Province of Santa Fe, Argentina), most amphibian species reproduce during the warm season and drastically diminish their activity during winter. Even though, a few species remain active during t...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | Costa Rica |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Idioma: | español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/11231 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/11231 |
| Access Level: | acceso abierto |
| Palabra clave: | hypsiboas pulchellus dendropsophus nanus diet fat bodies cold season energy source dieta cuerpos grasos estación de bajas temperaturas fuente de energía |
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Feeding of two amphibian species (Anura: Hylidae) during the low temperatures season and its relationship with energy storage in Santa Fe, Argentina Alimentación de dos especies de anfibios (Anura: Hylidae) en la estación de bajas temperaturas y su relación con la acumulación de energía en Santa Fe, Argentina |
| title |
Feeding of two amphibian species (Anura: Hylidae) during the low temperatures season and its relationship with energy storage in Santa Fe, Argentina |
| spellingShingle |
Feeding of two amphibian species (Anura: Hylidae) during the low temperatures season and its relationship with energy storage in Santa Fe, Argentina Antoniazzi, Carolina Elizabet hypsiboas pulchellus dendropsophus nanus diet fat bodies cold season energy source hypsiboas pulchellus dendropsophus nanus dieta cuerpos grasos estación de bajas temperaturas fuente de energía |
| title_short |
Feeding of two amphibian species (Anura: Hylidae) during the low temperatures season and its relationship with energy storage in Santa Fe, Argentina |
| title_full |
Feeding of two amphibian species (Anura: Hylidae) during the low temperatures season and its relationship with energy storage in Santa Fe, Argentina |
| title_fullStr |
Feeding of two amphibian species (Anura: Hylidae) during the low temperatures season and its relationship with energy storage in Santa Fe, Argentina |
| title_full_unstemmed |
Feeding of two amphibian species (Anura: Hylidae) during the low temperatures season and its relationship with energy storage in Santa Fe, Argentina |
| title_sort |
Feeding of two amphibian species (Anura: Hylidae) during the low temperatures season and its relationship with energy storage in Santa Fe, Argentina |
| dc.creator.none.fl_str_mv |
Antoniazzi, Carolina Elizabet López, Javier Alejandro Duré, Marta Falico, Diego Alejandro |
| author |
Antoniazzi, Carolina Elizabet |
| author_facet |
Antoniazzi, Carolina Elizabet López, Javier Alejandro Duré, Marta Falico, Diego Alejandro |
| author_role |
author |
| author2 |
López, Javier Alejandro Duré, Marta Falico, Diego Alejandro |
| author2_role |
author author author |
| dc.subject.none.fl_str_mv |
hypsiboas pulchellus dendropsophus nanus diet fat bodies cold season energy source hypsiboas pulchellus dendropsophus nanus dieta cuerpos grasos estación de bajas temperaturas fuente de energía |
| topic |
hypsiboas pulchellus dendropsophus nanus diet fat bodies cold season energy source hypsiboas pulchellus dendropsophus nanus dieta cuerpos grasos estación de bajas temperaturas fuente de energía |
| description |
In environments with thermal and pluvial seasonality such as those of the Middle Paraná River floodplain (Province of Santa Fe, Argentina), most amphibian species reproduce during the warm season and drastically diminish their activity during winter. Even though, a few species remain active during the cold season, such as Hypsiboas pulchellus that has its reproductive peak during the autumn-winter period (and the consequent energy demand). The objective of this study was to analyze and compare the feeding and development of fat bodies during the low temperature season for H. pulchellus and Dendropsophus nanus. We analyzed entire gastrointestinal tract contents of both species (H. pulchellus=110 specimens; D. nanus=114 specimens) and applied an index (IRI%) that combines prey abundance, volume and frequency to describe frogs diets; we used fat bodies weights as indicators of stored energy reserves. We compared diet between species with a niche overlap index (Ojk: 0-1) and used null models to ascribe statistical significance to evaluate overlap; and we analyzed variation in empty guts proportions through months and between species. Also, using ANCOVAs we explored differences in fat bodies, number and volume of prey consumed along months, between species and sexes. The most important preys in H. pulchellus diet during the cold season were Araneae (IRI%=34.96), Chironomidae (IRI%=33.08), Tipulidae (IRI%=11.44) and Gryllidae (IRI%=7.31); while for D. nanus, Chironomidae (IRI%=48.14), Tipulidae (IRI%=18.41), Psychodidae (IRI%=7.44) and Araneae (IRI%=7.34). Diet overlap between species was elevated (Ojk=0.78) and higher than expected by chance (mean simulated indices: Ojk=0.04; p[observed≥expected]<0.01; p[observed≤expected]=1). In H. pulchellus there was a monthly variation in number of prey per gut, while in D. nanus there was a difference in fat bodies development between sexes. Fat bodies development, number of prey per gut and preys volume also varied between species. Despite diet similarity between H. pulchellus and D. nanus, each species showed a different strategy to accumulate energy and support their activity during the cold season. The low rate of gastrointestinal emptiness in H. pulchellus (<10% in any analyzed month) together with the poor development of their fat bodies, allows us to point out that, to sustain the breeding elevated energy demands, this species continues with a high feeding rate even at the low temperatures of cold season. On the other hand, the rate of gastrointestinal emptiness of D. nanus was higher than that of H. pulchellus (May=17.24%, July=22.22% and August=35.71%), while their fat bodies were well developed. Thus, D. nanus would depend more on their stored reserves to sustain the energy demands of being active during the low temperatures season and hence would reach the reproductive season in spring-summer in good body condition. |
| publishDate |
2013 |
| dc.date.none.fl_str_mv |
2013-06-01 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion artículo original http://purl.org/coar/resource_type/c_2df8fbb1 info:eu-repo/semantics/article |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/11231 10.15517/rbt.v61i2.11231 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/11231 |
| identifier_str_mv |
10.15517/rbt.v61i2.11231 |
| dc.language.none.fl_str_mv |
spa |
| language |
spa |
| dc.relation.none.fl_str_mv |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/11231/10596 |
| dc.rights.none.fl_str_mv |
Derechos de autor 2013 Revista de Biología Tropical acceso abierto http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
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Derechos de autor 2013 Revista de Biología Tropical acceso abierto http://purl.org/coar/access_right/c_abf2 |
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openAccess |
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application/pdf |
| dc.publisher.none.fl_str_mv |
Universidad de Costa Rica |
| publisher.none.fl_str_mv |
Universidad de Costa Rica |
| dc.source.none.fl_str_mv |
Revista de Biología Tropical; Vol. 61 No. 2 (2013): Volume 61 – Regular number 2 – June 2013; 875–886 Revista de Biología Tropical; Vol. 61 Núm. 2 (2013): Volumen 61 – Número regular 2 – Junio 2013; 875–886 Revista Biología Tropical; Vol. 61 N.º 2 (2013): Volumen 61 – Número regular 2 – Junio 2013; 875–886 2215-2075 0034-7744 10.15517/rbt.v61i2 reponame:Portal de Revistas UCR instname:Universidad de Costa Rica instacron:UCR |
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Universidad de Costa Rica |
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UCR |
| institution |
UCR |
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Portal de Revistas UCR |
| collection |
Portal de Revistas UCR |
| repository.name.fl_str_mv |
Portal de Revistas UCR - Universidad de Costa Rica |
| repository.mail.fl_str_mv |
jorge.polanco@ucr.ac.cr |
| _version_ |
1849325357262438400 |
| spelling |
Feeding of two amphibian species (Anura: Hylidae) during the low temperatures season and its relationship with energy storage in Santa Fe, ArgentinaAlimentación de dos especies de anfibios (Anura: Hylidae) en la estación de bajas temperaturas y su relación con la acumulación de energía en Santa Fe, ArgentinaAntoniazzi, Carolina ElizabetLópez, Javier AlejandroDuré, MartaFalico, Diego Alejandrohypsiboas pulchellusdendropsophus nanusdietfat bodiescold seasonenergy sourcehypsiboas pulchellusdendropsophus nanusdietacuerpos grasosestación de bajas temperaturasfuente de energíaIn environments with thermal and pluvial seasonality such as those of the Middle Paraná River floodplain (Province of Santa Fe, Argentina), most amphibian species reproduce during the warm season and drastically diminish their activity during winter. Even though, a few species remain active during the cold season, such as Hypsiboas pulchellus that has its reproductive peak during the autumn-winter period (and the consequent energy demand). The objective of this study was to analyze and compare the feeding and development of fat bodies during the low temperature season for H. pulchellus and Dendropsophus nanus. We analyzed entire gastrointestinal tract contents of both species (H. pulchellus=110 specimens; D. nanus=114 specimens) and applied an index (IRI%) that combines prey abundance, volume and frequency to describe frogs diets; we used fat bodies weights as indicators of stored energy reserves. We compared diet between species with a niche overlap index (Ojk: 0-1) and used null models to ascribe statistical significance to evaluate overlap; and we analyzed variation in empty guts proportions through months and between species. Also, using ANCOVAs we explored differences in fat bodies, number and volume of prey consumed along months, between species and sexes. The most important preys in H. pulchellus diet during the cold season were Araneae (IRI%=34.96), Chironomidae (IRI%=33.08), Tipulidae (IRI%=11.44) and Gryllidae (IRI%=7.31); while for D. nanus, Chironomidae (IRI%=48.14), Tipulidae (IRI%=18.41), Psychodidae (IRI%=7.44) and Araneae (IRI%=7.34). Diet overlap between species was elevated (Ojk=0.78) and higher than expected by chance (mean simulated indices: Ojk=0.04; p[observed≥expected]<0.01; p[observed≤expected]=1). In H. pulchellus there was a monthly variation in number of prey per gut, while in D. nanus there was a difference in fat bodies development between sexes. Fat bodies development, number of prey per gut and preys volume also varied between species. Despite diet similarity between H. pulchellus and D. nanus, each species showed a different strategy to accumulate energy and support their activity during the cold season. The low rate of gastrointestinal emptiness in H. pulchellus (<10% in any analyzed month) together with the poor development of their fat bodies, allows us to point out that, to sustain the breeding elevated energy demands, this species continues with a high feeding rate even at the low temperatures of cold season. On the other hand, the rate of gastrointestinal emptiness of D. nanus was higher than that of H. pulchellus (May=17.24%, July=22.22% and August=35.71%), while their fat bodies were well developed. Thus, D. nanus would depend more on their stored reserves to sustain the energy demands of being active during the low temperatures season and hence would reach the reproductive season in spring-summer in good body condition.Existe escasa información sobre la alimentación de las especies de anfibios activas durante la estación fría o las estrategias de utilización de reservas lipídicas como fuente de energía durante el periodo de bajas temperaturas. Por lo tanto, se analizaron las estrategias de obtención y acumulación energética durante la estación de bajas temperaturas en un anfibio que se reproduce principalmente en otoño-invierno, Hypsiboas pulchellus (Hp), y uno que lo hace en primavera-verano, Dendropsophus nanus (Dn). Para ello se analizó la alimentación de ambas especies y se utilizó el peso de los cuerpos grasos (CG) como indicador del desarrollo de las reservas energéticas. Si bien se encontró una elevada similitud en la dieta entre las especies, esto no implicó la ausencia de diferencias en las estrategias de obtención energética entre ellas. El bajo índice de vacuidad gastrointestinal de Hp, acompañado de CG poco desarrollados, permite señalar que, para sostener la elevada demanda energética de la actividad reproductiva concentrada en el otoño-invierno, esta especie continúa alimentándose aún en temperaturas bajas. Por otro lado, el índice de vacuidad de Dn fue mayor al de Hp, mientras que sus CG se encontraron bien desarrollados, por lo que esta especie utilizaría en mayor medida sus reservas lipídicas como fuente de energía para transitar el período de bajas temperaturas y llegar en buenas condiciones a la temporada reproductiva en la próxima primavera-verano.Universidad de Costa Rica2013-06-01info:eu-repo/semantics/publishedVersionartículo originalhttp://purl.org/coar/resource_type/c_2df8fbb1info:eu-repo/semantics/articleapplication/pdfhttps://revistas.ucr.ac.cr/index.php/rbt/article/view/1123110.15517/rbt.v61i2.11231Revista de Biología Tropical; Vol. 61 No. 2 (2013): Volume 61 – Regular number 2 – June 2013; 875–886Revista de Biología Tropical; Vol. 61 Núm. 2 (2013): Volumen 61 – Número regular 2 – Junio 2013; 875–886Revista Biología Tropical; Vol. 61 N.º 2 (2013): Volumen 61 – Número regular 2 – Junio 2013; 875–8862215-20750034-774410.15517/rbt.v61i2reponame:Portal de Revistas UCRinstname:Universidad de Costa Ricainstacron:UCRspahttps://revistas.ucr.ac.cr/index.php/rbt/article/view/11231/10596Derechos de autor 2013 Revista de Biología Tropicalacceso abiertohttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccess2022-10-17T17:03:01Zoai:portal.ucr.ac.cr:article/11231Portal de revistashttps://revistas.ucr.ac.cr/Universidadhttp://www.ucr.ac.crhttps://revistas.ucr.ac.cr/index.php/index/oaijorge.polanco@ucr.ac.crCosta RicaNo aplicaNo aplicaNo aplicaopendoar:2025-08-13T10:15:26.678Portal de Revistas UCR - Universidad de Costa Ricafalse |
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15,812429 |