Results 11 to 20 of about 7,244 (234)

Reproductive morphology of female Guiana dolphins (Sotalia guianensis) [PDF]

Anais da Academia Brasileira de Ciências, 2015
The reproductive morphology of cetaceans is poorly studied and, despite the large number of strandings, reports on this subject are scarce due to access to carcasses mostly in an advanced state of decomposition.
ESTELLA Z. BECEGATO, JANAINA P. ANDRADE, JULIANA P. GUIMARÃES, JOCIERY E. VERGARA-PARENTE, MARIA ANGELICA MIGLINO, FERNANDA M. DE OLIVEIRA E SILVA   +5 more
doaj   +4 more sources

Molecular sexing of tucuxi dolphins (Sotalia guianensis and Sotalia fluviatilis) using samples from biopsy darting and decomposed carcasses [PDF]

Genetics and Molecular Biology, 2007
We tested the zinc-finger sex chromosome-linked genes Zfx/Zfy and the sex-determining region Y (Sry) genes for gender determination of biopsy samples from marine and riverine tucuxi dolphins (Sotalia guianensis and S. fluviatilis).
Haydée A. Cunha, Antonio M. Solé-Cava
doaj   +4 more sources

Descrição do comportamento de superfície do boto cinza, Sotalia guianensis, na Praia de Pipa - RN Description of the surface behaviour of marine tucuxi, Sotalia guianensis, at Pipa Beach - RN

Psicologia: Reflexão e Crítica, 2008
O estudo do comportamento animal é uma área de pesquisa consolidada, que cresceu e se diversificou em vários países e que deu origem a disciplinas e abordagens de investigação, como a Etologia, a Ecologia Comportamental, a Neuroecologia, a Psicologia e a
Lídio França do Nascimento, Priscila Izabel A. P. Medeiros, Maria Emilia Yamamoto   +2 more
doaj   +2 more sources

The vertebral morphology of the estuarine dolphin, Sotalia guianensis (Cetacea, Delphinidae) [PDF]

Biotemas, 2004
We present a description of the backbone of the marine tucuzi (Sotalia guianensis ) vertebrae (n= 34), including the variations in the vertebral formula (n= 32)(UFSC- Universidade Federal de Santa catarina): Ce7, T12,L10-12,Ca23-25= 52-56.
Paulo César Simões-Lopes, Daniela de Castro Fettuccia   +1 more
doaj   +2 more sources

Electroreception in the Guiana dolphin (Sotalia guianensis). [PDF]

Proc Biol Sci, 2012
Passive electroreception is a widespread sense in fishes and amphibians, but in mammals this sensory ability has previously only been shown in monotremes. While the electroreceptors in fish and amphibians evolved from mechanosensory lateral line organs, those of monotremes are based on cutaneous glands innervated by trigeminal nerves.
Czech-Damal NU, Liebschner A, Miersch L, Klauer G, Hanke FD, Marshall C, Dehnhardt G, Hanke W.   +7 more
europepmc   +4 more sources

Social and environmental drivers of foraging behavior in Guiana dolphins (Sotalia guianensis) in Northeastern Brazil

Frontiers in Marine Science
Understanding how environmental and anthropogenic factors influence foraging behavior is essential to assess the vulnerability of coastal dolphin populations.
Juliana Lopez Marulanda, Juliana Lopez Marulanda, Rose Emilia Maceido de Quieroz, Flávio Jose De Lima Silva   +3 more
doaj   +2 more sources

Molecular Detection of Pathogenic <i>Leptospira</i> sp. in Cetaceans from the Brazilian Coast. [PDF]

Transbound Emerg Dis, 2023
Leptospirosis is a zoonosis with ubiquitous distribution caused by spirochetes belonging to the genus Leptospira sp., endemic mainly in tropical and subtropical regions of the world and capable of infecting domestic animals, free‐living animals, and humans.
Torres FD, Borges ALDSB, de Castilho PV, Kolesnikovas C, Domit C, Dos Santos J, Bonfim WAG, Carvalho VL, Barbosa CB, Ribeiro VL, Carvalho-Costa FA, Di Azevedo MIN, Lilenbaum W.   +12 more
europepmc   +2 more sources

Morfologia da coluna vertebral do botocinza, Sotalia guianensis (Cetacea, Delphinidae)

Biotemas, 2004
Apresenta-se uma descrição da morfologia da coluna do boto-cinza (Sotalia guianenis) (n=34), bem como variações da fórmula vertebral (n=32) (UFSC - Universidade Federal de Santa catarina): Ce 7 , T12 , 1-10_12, Ca23_25 -= 52-56.
Daniela de Castro Fettuccia, Paulo César Simões-Lopes   +1 more
doaj   +1 more source

Morphology of the Tympano-Periotic Complex in Stranded Odontocetes in Northeast Brazil. [PDF]

J Morphol
This study presents the morphological and morphometric characterization of the tympano‐periotic complex (TPC) in six odontocete species stranded along the northeastern coast of Brazil. A total of 57 TPCs were analyzed, revealing interspecific differences in key anatomical features and supporting taxonomic differentiation.
Colombini-Corrêa G, Morell M, Fragoso ABL, Farias DSD, Silva FJL, Gavilan SA.   +5 more
europepmc   +2 more sources

Alterações comportamentais do golfinho Sotalia guianensis (Gervais, 1953) provocadas por embarcações

Biotemas, 2006
Foram medidas as respostas comportamentais dos golfinhos Sotalia guianensis na presença de embarcações de turismo na enseada do Curral, Pipa-RN, Brasil.
Anderson Luis do Valle, Francielli Cristine Cunha Melo   +1 more
doaj   +1 more source