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Parental care behavior in the Guiana dolphin, Sotalia guianensis (Cetacea: Delphinidae), in Ilha Grande Bay, southeastern Brazil Rev. Bras. Zool.
Tardin,Rodrigo H. O.; Espécie,Mariana A.; Lodi,Liliane; Simão,Sheila M..
Parental care is any form of parental behavior that increases offspring fitness. To the authors' knowledge, this study is the first to analyze the intensity of parental care in the Guiana dolphin, Sotalia guianensis (van Bénéden, 1864). The objectives of this study are as follows: 1) to quantify the degree of parental care in S. guianensis in Ilha Grande Bay, Rio de Janeiro; 2) to investigate the influence of behavioral state and group size on the degree of parental care; and 3) to evaluate the differences between the intensity of parental care provided to calves and juveniles. Our results indicate that the intensity of parental care is high in S. guianensis and that care is more intense in larger groups. It is possible that these differences serve to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adult-offspring relationship; Parent-offspring conflict.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000100002
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Bryde's whale (Cetartiodactyla: Balaenopteridae) occurrence and movements in coastal areas of southeastern Brazil Rev. Bras. Zool.
Lodi,Liliane; Tardin,Rodrigo H.; Hetzel,Bia; Maciel,Israel S.; Figueiredo,Luciana D.; Simão,Sheila M..
Bryde's whales, Balaenoptera edeni Anderson, 1879, were observed on 17 occasions (N = 21 surveys) in the coastal waters off Rio de Janeiro in southeastern Brazil during austral summer through autumn 2014. Five whales were individually identified using photo-identification techniques. The mean interval between resightings for all individuals was 12.8 days, with a minimum of one day and a maximum of 48 days. The comparison between the catalogs of Bryde's whales off Rio de Janeiro and the Cabo Frio region revealed matches for three individuals. The resightings show movements of up to 149.6 km along the coastal waters off the state of Rio de Janeiro. Most of the observations consisted of solitary individuals (82.3% of sightings). Feeding was the predominant...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Balaenoptera edeni; Displacements; Individual identification; Surface activities.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000200171
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Movements of the bottlenose Dolphin (Tursiops truncatus) in the Rio de Janeiro State, Southeastern Brazil Biota Neotropica
Lodi,Liliane; Wedekin,Leonardo Liberali; Rossi-Santos,Marcos Roberto; Marcondes,Milton César.
Aiming to verify the movements of the bottlenose dolphin (Tursiops truncatus) at Rio de Janeiro State coast, southeastern Brazil, we performed a photoidentification comparison between the catalogued individuals of the Cagarras Archipelago (23° 02' S and 43° 12' W) in 2004 and 2006 (n = 26) and the images obtained (n = 179) during the Southeastern Cetaceans Expedition, conducted during months of June and November of 2005. Eight individuals (three females and five dolphins of unknown gender) identified in the Cagarras Archipelago were resighted in the Grande Island (23° 21'S and 44° 15' W), about 100 km southwestwards from Cagarras Archipelago. The observed movements include distances commonly recorded for the species elsewhere and are probably related to...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Tursiops truncatus; Resigthings; Rio de Janeiro state; Southeastern Brazil.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000400020
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