Results 81 to 90 of about 7,244 (234)

Helminths of Sotalia guianensis (Cetacea: Delphinidae) from the South and Southeastern Coasts of Brazil [PDF]

Journal of Wildlife Diseases, 2010
From May 1997 to October 2000, 49 Sotalia guianensis (tucuxi dolphin) incidentally caught in fishing nets or stranded in São Paulo (SP) and Paraná (PR) states in Brazil were necropsied. In total, 17 lungs, 35 stomachs, and 30 intestines were analyzed. Contents were washed through a sieve (mesh, 150 mm) and examined under a stereoscopic microscope for ...
Marigo, Juliana, Ruoppolo, Valéria, Weber Rosas, Fernando Cesar, Valente, Ana Luísa Schifino, Oliveira, M. R., Dias, Ricardo Augusto, Catão-Dias, José Luiz   +6 more
openaire   +3 more sources

Ethnoecology of sotalia guianensis (gervais, 1853) in the Amazon estuar

, 2022
This chapter describes a study conducted on the ecology of Sotalia guianensis in the Amazon estuary from 1999 to 2001, using participatory research with methodology. Interviews of 150 fishermen across 11 towns as well as surveys of the estuary by boat were completed to obtain information regarding S.
Beltrán-Pedreros, Sandra, Petrere, Miguel, Filgueiras-Henriques, Ligia Amaral   +2 more
openaire   +1 more source

SOTALIA GUIANENSIS POPULATION DENSITY ESTIMATIVE IN THE BAY OF ANTONINA, BRAZIL

Revista Acadêmica Ciência Animal, 2012
The present work aimed to estimate the population density of Sotalia guianensis in the Bay of Antonina, southern Brazilian coast, by linear transects, distance method. The average group size in the total area was 2.57 individuals/group. The study area is 28.1 km2 and it was divided in two sub-areas, an outer area closer to the sea and another more ...
Anne Karoline Japp, Gislaine De Fatima Filla   +1 more
openaire   +1 more source

Investigating Harvest and Vessel Traffic Exposure as Drivers of Social Group Characteristics in Canadian Beluga ( Delphinapterus leucas ) Populations

Marine Mammal Science, Volume 41, Issue 4, October 2025.
ABSTRACT Assessing variation in social behaviors of group‐living animals may provide insight into the impacts of population stressors. Using very high resolution (VHR) satellite imagery acquired over 3 years, we compared social group size and composition, as well as spatial and social cohesion in three beluga ( Delphinapterus leucas ) populations that ...
Jordan B. Stewart, John Iacozza, Lisa Loseto, Cortney A. Watt   +3 more
wiley   +1 more source

A computational framework to characterize and compare the tonal repertoires of toothed whales

Methods in Ecology and Evolution, Volume 16, Issue 7, Page 1350-1368, July 2025.
Abstract Toothed whales, despite being one of the most acoustically specialized lineages of vertebrates, lack detailed vocal repertoire characterizations comparable to those of songbirds and primates. Current descriptions often lack standardization, limiting interspecies and intraspecies comparisons critical for understanding the contribution of ...
Maia Austin, Julie N. Oswald, Manali Rege‐Colt, Emma Gagne, Eric Angel Ramos, Joëlle De Weerdt, Nicola Ransome, Laura J. May‐Collado   +7 more
wiley   +1 more source

Behavioral alterations in the gray dolphin Sotalia guianensis (Gervais, 1953) caused by sea traffi [PDF]

Biotemas, 2006
Behavioral responses by Sotalia guianensis dolphins in the presence of touristic sea traffic in the bay of Curral, Pipa-RN, Brazil, were measured. The dolphins changed their behavior when boats were closer than 100 meters. The main behavioral alterations
Francielli Cristine Cunha Melo, Anderson Luis do Valle   +1 more
doaj  

Molecular Identification and Historic Demography of the Marine Tucuxi (Sotalia guianensis) at the Amazon River’s Mouth by Means of Mitochondrial Control Region Gene Sequences and Implications for Conservation

Diversity, 2013
In 2005, three fishermen, with artisan fishing vessels and drift gillnets, accidentally captured around 200 dolphins between Vigia and Salinópolis in the Amazon River estuary. The dolphins died and they then prepared their vaginas and penises in order to
Joseph Mark Shostell, Daniela Tejada-Martínez, Pablo Escobar-Armel, David Mejia, Manuel Ruiz-García   +4 more
doaj   +1 more source

Prevalence of Epidermal Conditions in Critically Endangered Indo-Pacific Humpback Dolphins (Sousa chinensis) from the Waters of Western Taiwan [PDF]

, 2013
The prevalence of epidermal conditions in a small critically endangered population (
Wei-Cheng Yang1, Wei-Lung Chang2, Ka-Hei Kwong1, Yi-Ting Yao1 and Lien-Siang Chou2*
core  

Innervation patterns of sea otter (Enhydra lutris) mystacial follicle-sinus complexes [PDF]

, 2014
Sea otters (Enhydra lutris) are the most recent group of mammals to return to the sea, and may exemplify divergent somatosensory tactile systems among mammals.
Andres, Armed Forces Institute of Pathology, Armed Forces Institute of Pathology, Berta, Bininda-Emonds, Brecht, Brian Kot, Burgess, Catania, Christopher D. Marshall, Czech-Damal, Davidson, Dehnhardt, Dehnhardt, Dehnhardt, Dehnhardt, Dehnhardt, Dehnhardt, Duplaix, Dykes, Ebara, Erdsack, Estes, Estes, Fay, Finarelli, Gaspard, George, Ginter, Ginter, Gottschaldt, Grant, Halata, Halata, Halata, Hanke, Hyvärinen, Hyvärinen, Hyvärinen, Hyvärinen, Jacques, Kastelein, Kastelein, Kelly Rozas, Kenyon, Kvitek, Ladygina, Lee, Leffler, Ling, Lyras, Marshall, Marshall, Marshall, Mauck, McGovern, Melaragno, Mitchell, Pinto Hamuy, Radinsky, Radinsky, Radinsky, Reep, Reep, Reep, Reep, Repenning, Rice, Rice, Rice, Riedman, Sarko, Sivasothi, Stephens, Timm, Van Zyll de Jong, Verena A. Gill, Welker, Welker, Welker, Welker, Wilson, Woolsey, Yablokov, Yeates   +84 more
core   +1 more source

Living Under Pressure: Suitable Areas for an Endangered Coastal Dolphin Overlap With Intense Human Activities

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 6, June 2025.
ABSTRACT Marine ecosystems, especially coastal ones, are experiencing increased pressure from human activities. The first step to develop effective and appropriate management strategies is to understand the underlying processes of species distribution.
Tomaz Cezimbra, Mariana Leene de Santana Barros Leal, Giovana Alves Parpinelli, Daniel Anibolete, Guilherme Maricato, Israel S. Maciel, Liliane Lodi, Rodrigo H. Tardin   +7 more
wiley   +1 more source