Results 51 to 60 of about 27,397 (177)

Cranial and chromosomal geographic variation in manatees (Mammalia: Sirenia: Trichechidae) with the description of the Antillean manatee karyotype in Brazil

open access: yesJournal of Zoological Systematics and Evolutionary Research, 2016
We employed landmark-based 3D geometric morphometrics to assess cranial size and shape diversification in Trichechus manatus and T. inunguis to compare it with patterns among all manatee taxa (T. manatus latirostris, T. m. manatus, T. inunguis and T. senegalensis), and to analyse geographic variation within American manatee populations, using a sample ...
Helen M. D. do R. Barros   +6 more
openaire   +1 more source

Ocurrence of Cryptosporidium spp. in Amazonian manatees (Trichechus inunguis, Natterer, 1883) [PDF]

open access: yesBiotemas, 2007
The apicomplexa protozoa Cryptosporidium infects several mammals, including terrestrial and aquatic species. In the epidemiology of this infection, the ingestion of water and/or food contamined with oocysts comprises the main mechanism of transmission to
Maria Aparecida da Glória Faustino   +8 more
doaj  

Drone photogrammetry reveals contrasting body conditions of dugongs across the Indo‐Pacific

open access: yesRemote Sensing in Ecology and Conservation, Volume 11, Issue 6, Page 701-718, December 2025.
The monitoring of body condition has gained traction as a way to provide early warning signals of population decline, prompting conservation actions. However, the environmental and anthropogenic drivers of body condition variations are rarely investigated.
Camille Goudalier   +16 more
wiley   +1 more source

Amazonian manatee critical habitat revealed by artificial intelligence‐based passive acoustic techniques

open access: yesRemote Sensing in Ecology and Conservation, Volume 11, Issue 2, Page 172-186, April 2025.
We developed a method combining passive acoustic monitoring and convolutional neural networks to automatically detect the presence of Amazonian manatees in a floodplain lake over two flooded seasons. The CNN model showed a high performance (98% average precision) and was applied to process 226 days of acoustic recordings.
Florence Erbs   +5 more
wiley   +1 more source

Capture and utilization of the Antillean manatee (Trichechus manatus manatus) on the northern Brazilian coast [PDF]

open access: yesBiotemas, 2008
The Antillean manatee (Trichechus manatus manatus) is now considered to be the most endangered aquatic mammal of Brazil. During 1992 and 1993, we surveyed 3000km of the coastal area of the Maranhão (MA), Pará (PA) and Amapá (AP) states where we visited ...
Marisol Menezes Pessanha   +5 more
doaj  

Understanding causes of morbidity and mortality in Southern Hemisphere small Odontoceti: a scoping review

open access: yesMammal Review, Volume 55, Issue 2, April 2025.
This review identifies key causes of morbidity and mortality in Southern Hemisphere small Odontoceti, highlighting significant anthropogenic threats and the enhanced need for conservation strategies. Key findings include high rates of entanglements and a diverse range of infectious pathogens. Abstract Marine mammals serve as sentinels for environmental
Rebecca Souter   +3 more
wiley   +1 more source

Surveys of environmental DNA (eDNA): a new approach to estimate occurrence in Vulnerable manatee populations

open access: yesEndangered Species Research, 2018
Environmental DNA (eDNA) detection is a technique used to non-invasively detect cryptic, low density, or logistically difficult-to-study species, such as imperiled manatees. For eDNA measurement, genetic material shed into the environment is concentrated
Hunter, ME   +8 more
doaj   +1 more source

Side‐Scan Sonar as a Tool For Measuring Fish Populations: Current State of the Science and Future Directions

open access: yesFisheries, Volume 49, Issue 10, Page 454-462, October 2024.
Side‐scan sonar (SSS) is a powerful tool that can be used to address many key questions in fisheries science. In principle, SSS uses dual transducers to transmit a narrow‐beam, wide‐angle acoustic signal as the survey vessel transits an area. The intensity of reflected sound is recorded to generate an image mosaic comprised of benthic substrates and ...
Josey L. Ridgway   +5 more
wiley   +1 more source

Flagship individuals in biodiversity conservation

open access: yesFrontiers in Ecology and the Environment, Volume 22, Issue 1, February 2024.
Flagship species are an important tool for mobilizing support for conservation. Here, we extend this concept to include individual organisms, whose characteristics, fates, and connections to people can garner public attention, attract conservation support, and spur activism.
Ivan Jarić   +10 more
wiley   +1 more source

The Constitution and By-Laws of Manatee Fruit Growers Association

open access: yes, 1881
This is a copy of the constitution and by-laws of Manatee Fruit Growers Association from 1881. It is signed by P. L.
Manatee Fruit Growers Association
core  

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