Cuidado parental na popula??o de Sotalia guianensis (CETACEA, DELPHINIDAE) da Ba?a da Ilha Grande, RJ, Brasil

Detalhes bibliográficos
Autor(a) principal: Oliveira, Rodrigo Hip?lito Tardin
Data de Publicação: 2011
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRRJ
Texto Completo: https://tede.ufrrj.br/jspui/handle/jspui/3745
Resumo: Parental care is any form of parental behavior that seems to increase offspring fitness (CLUTTON-BROCK, 1991). Such works are rare in cetaceans and until the present, this is the first to analyze the intensity of parental care in the Guiana dolphin (Sotalia guianensis). The investigation was conducted using two measures: longitudinal care and transversal care. Parental care occurred when the mother located herself longitudinally ahead of its offspring (longitudinal position 1) and when was between the boat and the offspring (transversal position 1). The absence of parental care occurred when the offspring located itself ahead of the mother (longitudinal position 2) and when it was between the boat and the mother (transversal position 2). For each of these measures it was investigated the influence of 4 variables: age class (calves and juveniles), behavior (travelling and feeding), group size and seasonality. 28 boat trips were conducted equally through all seasons, totalizing 42.1 observation hours. It were observed 1,343 groups, in which 1,268 (94.4%) had offspring as their members. Mood?s median test showed statistical difference between the time offspring received longitudinal (?? = 77.98; d.f.. = 1; p = 0.0001) and transversal care (?? = 158.42; g.l. = 1; p = 0.0001). Median time in which mothers located themselves in position 1 was of 40 seconds (longitudinally) and 42 seconds (transversally), while for position 2 was of 30 seconds longitudinally and 26 transversally. When compared with the group size, median group size for longitudinal position 1 was of 18 individuals, while for position 2 it was 15. Mood?s median test showed statistical significance (?? = 15.86; g.l. = 3; p = 0.001). The same test also showed significance for transversal care (?? = 57.44; g.l = 3; p = 0.0001). Median for position 1 was of 18 and for position 2 was 12. Parental care intensity was significant for behavior (Longitudinal: N = 2,655; H3 = 188.1; P = 0.0001; Transversal: N = 2,633; H3 = 245.1; P = 0.0001), age class (Longitudinal: N = 2,656; H3 = 92.1; P= 0.0001; Transversal: N = 2,656; H3 = 156.9; P = 0.0001). Results indicate that parental care is intensely performed both longitudinally and transversally. Data showed that in larger group sizes, care is more intense, possibly as a way of maximizing hydrodynamic gains and to minimize risks. Parental care was more intense during travelling, since feeding dynamics is more random. Moreover, calves received a higher intensity of care than juveniles, suggesting a possible parentoffspring conflict.
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spelling Sim?o, Sheila Marino695.108.147-68http://lattes.cnpq.br/1704946542749907Lodi, Liliane FerreiraEsb?rard, Carlos Eduardo Lustosa108.545.857-10http://lattes.cnpq.br/3231576901208672Oliveira, Rodrigo Hip?lito Tardin2020-07-23T15:11:21Z2011-03-03OLIVEIRA, Rodrigo Hip?lito Tardin. Cuidado parental na popula??o de Sotalia guianensis (CETACEA, DELPHINIDAE) da Ba?a da Ilha Grande, RJ, Brasil. 2011. 43 f. Disserta??o (Mestrado em Biologia Animal) - Instituto de Ci?ncias Biol?gicas e da Sa?de, Universidade Federal Rural do Rio de Janeiro, Serop?dica, 2011.https://tede.ufrrj.br/jspui/handle/jspui/3745Parental care is any form of parental behavior that seems to increase offspring fitness (CLUTTON-BROCK, 1991). Such works are rare in cetaceans and until the present, this is the first to analyze the intensity of parental care in the Guiana dolphin (Sotalia guianensis). The investigation was conducted using two measures: longitudinal care and transversal care. Parental care occurred when the mother located herself longitudinally ahead of its offspring (longitudinal position 1) and when was between the boat and the offspring (transversal position 1). The absence of parental care occurred when the offspring located itself ahead of the mother (longitudinal position 2) and when it was between the boat and the mother (transversal position 2). For each of these measures it was investigated the influence of 4 variables: age class (calves and juveniles), behavior (travelling and feeding), group size and seasonality. 28 boat trips were conducted equally through all seasons, totalizing 42.1 observation hours. It were observed 1,343 groups, in which 1,268 (94.4%) had offspring as their members. Mood?s median test showed statistical difference between the time offspring received longitudinal (?? = 77.98; d.f.. = 1; p = 0.0001) and transversal care (?? = 158.42; g.l. = 1; p = 0.0001). Median time in which mothers located themselves in position 1 was of 40 seconds (longitudinally) and 42 seconds (transversally), while for position 2 was of 30 seconds longitudinally and 26 transversally. When compared with the group size, median group size for longitudinal position 1 was of 18 individuals, while for position 2 it was 15. Mood?s median test showed statistical significance (?? = 15.86; g.l. = 3; p = 0.001). The same test also showed significance for transversal care (?? = 57.44; g.l = 3; p = 0.0001). Median for position 1 was of 18 and for position 2 was 12. Parental care intensity was significant for behavior (Longitudinal: N = 2,655; H3 = 188.1; P = 0.0001; Transversal: N = 2,633; H3 = 245.1; P = 0.0001), age class (Longitudinal: N = 2,656; H3 = 92.1; P= 0.0001; Transversal: N = 2,656; H3 = 156.9; P = 0.0001). Results indicate that parental care is intensely performed both longitudinally and transversally. Data showed that in larger group sizes, care is more intense, possibly as a way of maximizing hydrodynamic gains and to minimize risks. Parental care was more intense during travelling, since feeding dynamics is more random. Moreover, calves received a higher intensity of care than juveniles, suggesting a possible parentoffspring conflict.Cuidado parental ? qualquer forma de comportamento parental que parece aumentar a aptid?o de sua prole (CLUTTON-BROCK, 1991). Tais trabalhos em cet?ceos s?o raros e at? o presente momento, este ? o primeiro que analisa o grau de cuidado parental do boto-cinza (Sotalia guianensis) na Ba?a da Ilha Grande, RJ. As an?lises foram realizadas a partir de duas medidas: cuidado longitudinal e cuidado transversal. Havia cuidado parental quando a m?e se colocava longitudinalmente ? frente da prole (posi??o longitudinal 1) e quando a m?e se colocava entre a embarca??o e a prole (posi??o transversal 1). N?o havia cuidado quando a prole se localizava longitudinalmente ? frente da m?e (posi??o longitudinal 2) e quando a prole se localizava entre a embarca??o e a m?e (posi??o transversal 2). Para cada uma das medidas foi investigada a influ?ncia de 4 vari?veis: classe et?ria (filhotes e juvenis), comportamento (deslocamento e pesca), tamanho do grupo e sazonalidade. 28 sa?das de barco foram realizadas igualmente por todas as esta??es de ano, totalizando 42,1 horas de observa??o. Foram observados 1.343 grupos, nos quais 1.268 (94,4%) continham filhotes. O teste da mediana de Mood demonstrou diferen?a estatisticamente significativa entre o tempo que a prole recebia cuidado longitudinal (?? = 77,98; g.l. = 1; p = 0,0001) e transversal (?? = 158,42; g.l. = 1; p = 0,0001). A mediana do tempo em que as m?es se localizavam na posi??o 1 foi de 40 segundos (longitudinalmente) e 42 segundos (transversalmente), enquanto a mediana do tempo em que a prole se localizou ? frente das m?es longitudinalmente foi de 30 segundos e transversalmente de 26 segundos. Quando comparado com o tamanho do grupo, a mediana dos tamanhos de grupos encontrada para a posi??o longitudinal 1 foi de 18 animais, enquanto que para a posi??o 2 foi de 15 animais. O teste da mediana de Mood demonstrou diferen?as estatisticamente significativas (?? = 15,86; g.l. = 3; p = 0,001). O mesmo teste demonstrou diferen?as para o cuidado parental transversal (?? = 57,44; g.l. = 3; p = 0,0001). A mediana para a posi??o 1 foi de 18 indiv?duos e para a 2 de 12. A intensidade do cuidado parental foi significativa em rela??o ao comportamento (Longitudinal: N = 2.655; H3 = 188,1; P = 0,0001; Transversal: N = 2.633; H3 = 245,1; P = 0,0001), com a classe et?ria (Longitudinal: N = 2.656; H3 = 92,1; P = 0,0001; Transversal: N = 2.656; H3 = 156,9; P = 0,0001). Os resultados indicam que o cuidado parental tanto longitudinal quanto transversal ? intensamente realizado. Os dados demonstraram que em grupos maiores o cuidado ? mais intenso, possivelmente como uma forma de maximizar os ganhos hidrodin?micos ao filhote e minimizar os riscos. O cuidado parental foi mais intenso durante o deslocamento, j? que a din?mica da alimenta??o ? mais aleat?ria. Os filhotes receberam mais cuidado parental do que juvenis, indicando um poss?vel conflito entre pais e a prole.Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2020-07-23T15:11:21Z No. of bitstreams: 1 2011 - Rodrigo Hipolito Tardin Oliveira.pdf: 754160 bytes, checksum: 8b9c82bd9141322bc5de6239beca208b (MD5)Made available in DSpace on 2020-07-23T15:11:21Z (GMT). No. of bitstreams: 1 2011 - Rodrigo Hipolito Tardin Oliveira.pdf: 754160 bytes, checksum: 8b9c82bd9141322bc5de6239beca208b (MD5) Previous issue date: 2011-03-03Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil.application/pdfhttps://tede.ufrrj.br/retrieve/61279/2011%20-%20Rodrigo%20Hipolito%20Tardin%20Oliveira.pdf.jpgporUniversidade Federal Rural do Rio de JaneiroPrograma de P?s-Gradua??o em Biologia AnimalUFRRJBrasilInstituto de Ci?ncias Biol?gicas e da Sa?deALTMANN, J. Observational study of behavior: sampling methods. Behavior, v. 49, n.3-4, p.227-267, 1974. ALTMANN, J.; SAMUELS, A. 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dc.title.por.fl_str_mv Cuidado parental na popula??o de Sotalia guianensis (CETACEA, DELPHINIDAE) da Ba?a da Ilha Grande, RJ, Brasil
dc.title.alternative.eng.fl_str_mv Parental care in Sotalia guianensis (CETACEA, DEPLHINIDAE) population in Ilha Grande bay, RJ, Brazil
title Cuidado parental na popula??o de Sotalia guianensis (CETACEA, DELPHINIDAE) da Ba?a da Ilha Grande, RJ, Brasil
spellingShingle Cuidado parental na popula??o de Sotalia guianensis (CETACEA, DELPHINIDAE) da Ba?a da Ilha Grande, RJ, Brasil
Oliveira, Rodrigo Hip?lito Tardin
Sotalia guianensis
Cuidado parental
Ba?a da Ilha Grande
sotalia guianensis
Parental care
Ilha Grande bay
Zoologia
title_short Cuidado parental na popula??o de Sotalia guianensis (CETACEA, DELPHINIDAE) da Ba?a da Ilha Grande, RJ, Brasil
title_full Cuidado parental na popula??o de Sotalia guianensis (CETACEA, DELPHINIDAE) da Ba?a da Ilha Grande, RJ, Brasil
title_fullStr Cuidado parental na popula??o de Sotalia guianensis (CETACEA, DELPHINIDAE) da Ba?a da Ilha Grande, RJ, Brasil
title_full_unstemmed Cuidado parental na popula??o de Sotalia guianensis (CETACEA, DELPHINIDAE) da Ba?a da Ilha Grande, RJ, Brasil
title_sort Cuidado parental na popula??o de Sotalia guianensis (CETACEA, DELPHINIDAE) da Ba?a da Ilha Grande, RJ, Brasil
author Oliveira, Rodrigo Hip?lito Tardin
author_facet Oliveira, Rodrigo Hip?lito Tardin
author_role author
dc.contributor.advisor1.fl_str_mv Sim?o, Sheila Marino
dc.contributor.advisor1ID.fl_str_mv 695.108.147-68
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/1704946542749907
dc.contributor.referee1.fl_str_mv Lodi, Liliane Ferreira
dc.contributor.referee2.fl_str_mv Esb?rard, Carlos Eduardo Lustosa
dc.contributor.authorID.fl_str_mv 108.545.857-10
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/3231576901208672
dc.contributor.author.fl_str_mv Oliveira, Rodrigo Hip?lito Tardin
contributor_str_mv Sim?o, Sheila Marino
Lodi, Liliane Ferreira
Esb?rard, Carlos Eduardo Lustosa
dc.subject.por.fl_str_mv Sotalia guianensis
Cuidado parental
Ba?a da Ilha Grande
topic Sotalia guianensis
Cuidado parental
Ba?a da Ilha Grande
sotalia guianensis
Parental care
Ilha Grande bay
Zoologia
dc.subject.eng.fl_str_mv sotalia guianensis
Parental care
Ilha Grande bay
dc.subject.cnpq.fl_str_mv Zoologia
description Parental care is any form of parental behavior that seems to increase offspring fitness (CLUTTON-BROCK, 1991). Such works are rare in cetaceans and until the present, this is the first to analyze the intensity of parental care in the Guiana dolphin (Sotalia guianensis). The investigation was conducted using two measures: longitudinal care and transversal care. Parental care occurred when the mother located herself longitudinally ahead of its offspring (longitudinal position 1) and when was between the boat and the offspring (transversal position 1). The absence of parental care occurred when the offspring located itself ahead of the mother (longitudinal position 2) and when it was between the boat and the mother (transversal position 2). For each of these measures it was investigated the influence of 4 variables: age class (calves and juveniles), behavior (travelling and feeding), group size and seasonality. 28 boat trips were conducted equally through all seasons, totalizing 42.1 observation hours. It were observed 1,343 groups, in which 1,268 (94.4%) had offspring as their members. Mood?s median test showed statistical difference between the time offspring received longitudinal (?? = 77.98; d.f.. = 1; p = 0.0001) and transversal care (?? = 158.42; g.l. = 1; p = 0.0001). Median time in which mothers located themselves in position 1 was of 40 seconds (longitudinally) and 42 seconds (transversally), while for position 2 was of 30 seconds longitudinally and 26 transversally. When compared with the group size, median group size for longitudinal position 1 was of 18 individuals, while for position 2 it was 15. Mood?s median test showed statistical significance (?? = 15.86; g.l. = 3; p = 0.001). The same test also showed significance for transversal care (?? = 57.44; g.l = 3; p = 0.0001). Median for position 1 was of 18 and for position 2 was 12. Parental care intensity was significant for behavior (Longitudinal: N = 2,655; H3 = 188.1; P = 0.0001; Transversal: N = 2,633; H3 = 245.1; P = 0.0001), age class (Longitudinal: N = 2,656; H3 = 92.1; P= 0.0001; Transversal: N = 2,656; H3 = 156.9; P = 0.0001). Results indicate that parental care is intensely performed both longitudinally and transversally. Data showed that in larger group sizes, care is more intense, possibly as a way of maximizing hydrodynamic gains and to minimize risks. Parental care was more intense during travelling, since feeding dynamics is more random. Moreover, calves received a higher intensity of care than juveniles, suggesting a possible parentoffspring conflict.
publishDate 2011
dc.date.issued.fl_str_mv 2011-03-03
dc.date.accessioned.fl_str_mv 2020-07-23T15:11:21Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.citation.fl_str_mv OLIVEIRA, Rodrigo Hip?lito Tardin. Cuidado parental na popula??o de Sotalia guianensis (CETACEA, DELPHINIDAE) da Ba?a da Ilha Grande, RJ, Brasil. 2011. 43 f. Disserta??o (Mestrado em Biologia Animal) - Instituto de Ci?ncias Biol?gicas e da Sa?de, Universidade Federal Rural do Rio de Janeiro, Serop?dica, 2011.
dc.identifier.uri.fl_str_mv https://tede.ufrrj.br/jspui/handle/jspui/3745
identifier_str_mv OLIVEIRA, Rodrigo Hip?lito Tardin. Cuidado parental na popula??o de Sotalia guianensis (CETACEA, DELPHINIDAE) da Ba?a da Ilha Grande, RJ, Brasil. 2011. 43 f. Disserta??o (Mestrado em Biologia Animal) - Instituto de Ci?ncias Biol?gicas e da Sa?de, Universidade Federal Rural do Rio de Janeiro, Serop?dica, 2011.
url https://tede.ufrrj.br/jspui/handle/jspui/3745
dc.language.iso.fl_str_mv por
language por
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