Humpback Whale
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Stranded humpback whale (Megaptera novaeangliae) (Cetacea: Balaenopteridae) in Paraná River Delta, Buenos Aires Province, Argentina. Comments on the occurrence of marine mammals in the La Plata River Basin
Abstract The humpback whale (Megaptera novaeangliae) is distributed among most oceans and seas of the globe (except Mediterranean Sea). These whales migrate from feeding regions in the Antarctic waters to breeding areas in tropical and subtropical seas. Here we report the stranding of a female young humpback whale, which was founded dead in the vicinity of t
Pap. Avulsos Zool.. Publicado em: 19/03/2018
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2. Effective population size and the genetic consequences of commercial whaling on the humpback whales (Megaptera novaeangliae) from Southwestern Atlantic Ocean
Abstract Genotypes of 10 microsatellite loci of 420 humpback whales from the Southwestern Atlantic Ocean population were used to estimate for the first time its contemporary effective (Ne) and census (Nc) population sizes and to test the genetic effect of commercial whaling. The results are in agreement with our previous studies that found high genetic diver
Genet. Mol. Biol.. Publicado em: 2018
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3. Humpback whale Megaptera novaeangliae (Cetartiodactyla: Balaenopteridae) group sizes in line transect ship surveys: An evaluation of observer errors
ABSTRACT Accurate estimates of group sizes through line transect sampling methods are important to correctly ascertain the abundance of animals that occur in groups. Since the average observed group size is a component of the distance sampling formula, bias in these data leads to biased abundance estimates. This study aimed to evaluate the potential errors i
Zoologia (Curitiba). Publicado em: 06/05/2016
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4. What do humpback whales Megaptera novaeangliae (Cetartiodactyla: Balaenopteridae) pairs do after tagging?
The social structure of humpback whales in their tropical wintering grounds is very fluid. To date, no information has been published for cases in which two whales were both satellite-tagged while in association. Here, we report the movements of four humpback whale pairs tagged together off the coast of Brazil. Fieldwork and satellite tagging of humpback wha
Zoologia (Curitiba). Publicado em: 2014-04
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5. Behavioral responses of humpback whales, Megaptera novaeangliae (Cetacea: Balaenopteridae), to satellite transmitter deployment procedures
Tagging whales with implantable satellite transmitters creates the possibility of disturbing the animals. Between 2003 and 2005, behavioral observations of humpback whales during tag deployment operations were conducted off the coast of Brazil from the flying bridge of a speedboat. The speed achieved by each whale during pursuit was registered by GPS receive
Zoologia (Curitiba). Publicado em: 2010-02
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6. First record of a humpback whale, Megaptera novaeangliae (Borowski, 1781), stranding in Pará State, Northern coast of Brazil
Brazilian Journal of Biology. Publicado em: 2009-11
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7. The sero-prevalence of Toxoplasma gondii in British marine mammals
Serum samples from 101 stranded or bycatch cetaceans from British waters were screened for Toxoplasma gondii-specific antibodies using the Sabin Feldman Dye Test. Relatively high seropositivity was recorded in short-beaked Delphinus delphis and this study presents the first documented case of Toxoplasma in a humpback whale Megaptera novaeangliae.
Memórias do Instituto Oswaldo Cruz. Publicado em: 2009-03
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8. Caracterização temporal da estrutura de grupos e do comportamento de baleias jubarte (Megaptera novaeangliae) na área de reprodução da região do Arquipélago dos Abrolhos (Bahia, Brasil). / Temporal characterization of humpback whales (Megaptera novaeangliae) group structure and behavior in Abrolhos Archipelago breeding area (Bahia, Brazil).
Baleias jubarte usam a costa leste do Brasil como área de reprodução e cria. As águas ao redor do Arquipélago dos Abrolhos são importantes devido a grande concentração de grupos com filhotes. Um estudo de 7 anos (entre 1998 e 2004) foi realizado, a partir de um ponto fixo de observação em terra, a fim de se investigar padrões temporais na estrutur
Publicado em: 2007
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9. ESTUDO DAS TAXAS REPRODUTIVAS E CAPTURABILIDADE DE BALEIAS-JUBARTE Megaptera novaeangliae (BOROWSKI, 1781; CETACEA: BALAENOPTERIDAE), EM SUA PRINCIPAL ÁREA DE CONCENTRAÇÃO PARA REPRODUÇÃO NA COSTA BRASILEIRA (BANCO DOS ABROLHOS, BAHIA, BRASIL)
A caça comercial desenvolvida no início do século XX dizimou populações de baleias jubarte (Megaptera novaeangliae) em muitas regiões do oceano Antártico, entre elas os arredores da ilha Geórgia do Sul. Recentemente, este local foi confirmado como destino migratório das jubartes que se concentram no banco dos Abrolhos, situado entre a Bahia e Espír
Publicado em: 2007
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10. Behavior of humpback whales calves, Megaptera novaeangliae, around Abrolhos Archipelago, Bahia (Brazil) / Comportamento de filhotes de baleia jubarte, Megaptera novaeangliae, na região ao redor do Arquipélago dos Abrolhos, Bahia (Brasil)
To characterize the behavior of humpback whales calves, a study was conduct around Abrolhos Archipelago, an important nursing area for the species in Brazil. It was investigated aspects of the behavioral development of calves, behavioral differences between calves of different breeding seasons and also the effects of the presence of one escort in the behavio
Publicado em: 2006
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11. The song of the Brazilian population of Humpback Whale Megaptera novaeangliae, in the year 2000: individual song variations and possible implications
Estudamos o canto da população brasileira de Baleia-jubarte Megaptera novaeangliae em sua área de reprodução - a região do Banco dos Abrolhos, Bahia - de julho a novembro do ano 2000. Completamos análises auditiva e espectral de aproximadamente 20 ciclos de canto, em um total de 5 horas de gravações provenientes de 10 ocasiões diferentes. Identific
Anais da Academia Brasileira de Ciências. Publicado em: 2004-06
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12. Estrutura e contexto eto-ecologico do canto da população de Baleia-jubarte Megaptera novaeangliae, no ano 2000
To our knowledge, this is the first study of the song of the Brazilian population of Humpback Whale Megaptera novaeangliae in its breeding and calving ground. Digital recordings (DAT) were made at the Abrolhos Bank, Bahia, from July to November 2000. Aural and spectral analyses were carried out for approximately 20 song cycles, in a total of 5 hours of songs
Publicado em: 2002