Results 51 to 60 of about 25,335 (235)

Intraspecific variation of cochlear morphology in bowhead and beluga whales

The Anatomical Record, EarlyView.
Abstract The bony labyrinth of the petrosal bone, a distinctive feature of mammal skulls, is often identified in micro‐computed tomography imaging to infer species' physiological and ecological traits. When done as part of a comparative study, one individual specimen is normally considered representative of a species, and intraspecific variation is ...
John Peacock, J. G. M. Thewissen
wiley   +1 more source

On the stranding of sperm whales at Nagapattinam,Tamil nadu coast [PDF]

, 1992
A whale baby female sperm whale, Physeter macrocephakis Linnaeus measuring 3.71 m and weighing about 700 kg was stranded on18th December, 1988 at Samnathanpettai near Nagapattinam . Another sperm whale was found dead and washed ashore at Vizhunthamavadi
Badrudeen, M, Nammalwar, P, Pillai, S Krishna, Sivasamy, V, Somu, R, Thanapati, V   +5 more
core  

Trends in marine species distribution models: a review of methodological advances and future challenges

Ecography, EarlyView.
Correlative species distribution models (SDMs) are quantitative tools in biogeography and macroecology. Building upon the ecological niche concept, they correlate environmental covariates to species presence to model habitat suitability and predict species distributions.
Moritz Klaassen, Tiago A. Marques, Filipe Alves, Marc Fernandez   +3 more
wiley   +1 more source

Illegal Wildlife Trade in a Tourism and Biodiversity Hotspot

Sustainable Development, EarlyView.
ABSTRACT There are clear connections between tourism, development, and sustainable use—particularly in biodiversity hotspots, where tourists may unknowingly purchase souvenirs made from protected wildlife. This issue is explicitly recognized in the Sustainable Development Goals, including SDG15, Life on Land, and SDG16, Peace, Justice, and Strong ...
Jessica Chavez, Marco Campera, Lisa E. Hensley, Kuntayuni, S. Sunny Nelson, I. Nyoman Aji Duranegara Payuse, Anne W. Rimoin, Chris R. Shepherd, Erly Sintya, Desak Ketut Tristiana Sukmadewi, Ratna Ayu Widiaswari, Vincent Nijman   +11 more
wiley   +1 more source

Close encounters of the friendly kind: pacific between‐group interactions in primates

Biological Reviews, EarlyView.
ABSTRACT While intergroup conflict features prominently in the behavioural ecology literature, its antonym, intergroup peace, has been a rather neglected phenomenon until recently. Neighbourly relations and affiliative interactions are far from uncommon.
Cyril C. Grueter, Luca Pozzi
wiley   +1 more source

Structure and optics of the anterior segment of the cetacean eye : a thesis presented in fulfilment of the requirements for the degree of Master of Philosophy at Massey University [PDF]

, 1999
The anterior segment of the mammalian eye is concerned with the function and maintenance of its optical components, the most important of these being the maintenance of transparency and stable intraocular pressure.
Mellor, Lynda
core  

How is the third jaw joint in whales different? Diverse modes of articulation between the jaws of whales

Journal of Anatomy, EarlyView.
This study conducts the first comprehensive morphological investigation of the mandibular symphysis in whales. Using gross anatomical observation and CT cross‐sectional data, we describe diverse joint morphologies across 74 extant and fossil cetacean taxa. Toothed whales exhibit unfused, partially fused, or fully fused symphyses.
Rebecca J. Strauch, Nicholas D. Pyenson, Carlos Mauricio Peredo   +2 more
wiley   +1 more source

The departure of sperm whales (Physeter macrocephalus) in response to the declining jumbo squid (Dosidicus gigas) population in the central portion of the Gulf of California [PDF]

PeerJ
As sperm whales are important predators that control energy flux in the oceans, changes in their population can be used as a sentinel to measure of ecosystem health.
Héctor Pérez-Puig, Alejandro Arias Del Razo, Daniela Ahuatzin Gallardo, Jaime Bolaños   +3 more
doaj   +2 more sources

The larger the cetacean, the more stationary their sleep? Thermoregulatory constraints on the sleep behaviour of captive cetaceans

Journal of Zoology, EarlyView.
Cetaceans face thermal challenges when sleeping underwater. Our study found that smaller body size correlated with more swim sleep and less stationary sleep, while the opposite was true for larger cetaceans. Additionally, bottlenose dolphins increased swim sleep at lower ambient temperatures, suggesting a sleep strategy influenced by body size and ...
K. Aota, Y. Sekiguchi, D. M. Kikuchi
wiley   +1 more source

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

Marine Mammal Science, EarlyView.
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