Results 41 to 50 of about 523 (178)

Using Cost-Effective Surveys From Platforms of Opportunity to Assess Cetacean Occurrence Patterns for Marine Park Management in the Heart of the Coral Triangle

open access: yesFrontiers in Marine Science, 2020
For Marine Protected Areas (MPAs) to be effective in conservation their zoning and management needs to be based on scientific data. Obtaining information on spatio-temporal occurrence patterns of cetaceans can be especially challenging.
Achmad Sahri   +6 more
doaj   +1 more source

A new Dugonginae sirenian from the early Miocene of India [PDF]

open access: yes, 1997
We redescribe the holotype skull of "Metaxytherium" kachchhense Bajpai, Singh, and Singh, 1987, and erect for it the new genus Bharatisiren. This skull is the best-preserved specimen of a fossil sirenian so far reported from the Indian Ocean region, and ...
Bajpai, Sunil, Domning, Daryl P.
core   +2 more sources

Ground penetrating radar and palaeontology: The detection of Sirenian fossil bones under a sunflower field in Tuscany (Italy) [PDF]

open access: yes, 2012
The application of Ground Penetrating Radar (GPR) in vertebrate palaeontology is very rare. We describe the discovery of an Early Pliocene Sirenian skeleton detected by GPR in a locality near Grosseto (Tuscany, Italy). The specimen represents one of the
BINI, MONICA   +4 more
core   +1 more source

An unexpected deadly meeting: Deep- water (hexanchid) shark bite marks on a sirenian skeleton from Pliocene shoreface deposits of Tuscany (Italy) [PDF]

open access: yes, 2021
Shark bite marks incising fragmentary ribs from a single specimen of the extinct sirenian Metaxytherium subapenninum are described from lower Pliocene shallow- water, marginal- marine (shoreface) deposits exposed at Arcille (Tuscany, Italy).
Merella M.   +4 more
core   +1 more source

FIRST RECORD OF DUGONGIDAE (MAMMALIA: SIRENIA) FROM THE FLORESTA CALCARENITES FORMATION (LATE BURDIGALIAN – EARLY LANGHIAN, REGGIO CALABRIA, SOUTHERN ITALY)

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2016
A sirenian rib has been recovered at Motta San Giovanni (Reggio Calabria) in the “Floresta Calcarenites”, a Formation cropping out in Sicily and Calabria and dated late Burdigalian-Langhian.
GIUSEPPE CARONE   +2 more
doaj   +1 more source

The bivalve Glycymeris planicostalis as a high-resolution paleoclimate archive for the Rupelian (Early Oligocene) of central Europe [PDF]

open access: yesClimate of the Past, 2015
Current global warming is likely to result in a unipolar glaciated world with unpredictable repercussions on atmospheric and oceanic circulation patterns.
E. O. Walliser   +5 more
doaj   +1 more source

First Non‐Invasive Monitoring of Fecal Steroids in Greater Caribbean Manatees (Trichechus manatus manatus)

open access: yesZoo Biology, EarlyView.
This study established the first fecal hormonal reference values (P4/E2) for the Greater Caribbean manatee. Using non‐invasive ELISA, the authors found no significant differences between mature and immature females, highlighting that long‐term monitoring and ultrasounds are essential to fully understand their complex reproductive cycles.
Vanessa Bermúdez‐Cardona   +3 more
wiley   +1 more source

NEW SIRENIAN FINDINGS FROM CRETE ISLAND [PDF]

open access: yes, 2010
In the last five years, the discovery of several new localities of fossil Sirenians found in the Neogene sediments of Crete has increased drastically the number of sirenian localities on the island.
Iliopoulos, G., Svana, K., Fassoulas, C.
core   +1 more source

Morphology, morphometry and ultrastructure of the Amazonian manatee (Sirenia: Trichechidae) spermatozoa

open access: yesZoologia (Curitiba), 2010
This study describes the morphological, morphometric and ultrastructural characteristics of the Amazonian manatee Trichechus inunguis (Natterer, 1883) spermatozoon. The spermatozoa were obtained from a urine sample of an adult T.
Rodrigo S. Amaral   +4 more
doaj   +1 more source

Elephants and Sirenians: A Comparative Review across Related Taxa in Regard to Learned Vocal Behavior

open access: yesComparative Cognition & Behavior Reviews, 2022
Vocal production learning is the ability to modify a vocal output in response to auditory experience. It is essential for human speech production and language acquisition. Vocal learning evolved independently several times in vertebrates, indicating evolutionary pressure in favor of this trait. This enables cross-species comparative analysis to be used
Baotic, Anton   +3 more
openaire   +3 more sources

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