Results 111 to 120 of about 197,633 (342)

Osmoregulation in Marine Mammals [PDF]

Journal of Experimental Biology, 2001
SUMMARY Osmoregulation in marine mammals has been investigated for over a century; however, a review of recent advances in our understanding of water and electrolyte balance and of renal function in marine mammals is warranted. The following topics are discussed: (i) kidney structure and urine concentrating ability, (ii) sources of water,
openaire   +2 more sources

Accumulation of Heavy Metals in Franciscanas from Buenos Aires Province, Argentina [PDF]

, 2002
Marine mammals accumulate heavy metals in their tissues at different concentrations according to trophic levels and environmental conditions. The franciscana (Pontoporia blainvillei) is a small coastal species inhabiting the marine and estuarine areas of
Bastida, R.O., de Moreno, J.A.E., Gerpe, M.S., Moreno, V.J., Rodríguez, D.H.   +4 more
core  

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

The Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri, Humberto L. Andrelino, Sergio Bogan, José P. O'Gorman, Federico Agnolín, Brian L. Sidlauskas, Nahuel Vega, Agustín G. Martinelli, José L. Birindelli   +8 more
wiley   +1 more source

The National Marine Fisheries Service’s National Bycatch Strategy [PDF]

, 2004
The National Marine Fisheries Service (NMFS) launched its National Bycatch Strategy (NBS) in March 2003 in response to the continued fisheries management challenge posed by fisheries bycatch.
Benaka, Lee R., Dobrzynski, Tanya J.
core  

How large should whales be? [PDF]

, 2013
The evolution and distribution of species body sizes for terrestrial mammals is well-explained by a macroevolutionary tradeoff between short-term selective advantages and long-term extinction risks from increased species body size, unfolding above the 2g
A Clauset, A Clauset, A Clauset, Aaron Clauset, AD Davidson, AP Martin, B Van Valkenburgh, BE Stewart, BK Ahlborn, BK Ahlborn, BK McNab, CA Long, CR Allen, D Nagorsen, DM Raup, DW McShea, EP White, FA Smith, FA Smith, G Hunt, GB West, GP Wilson, J Alroy, J Alroy, J Alroy, J Koz lowski, J Potvin, JA Goldbogen, JF Downhower, JH Brown, K Van Waerebeek, KP Sebens, LH Liow, M Lomolino, MW Newcomer, OP Pearson, P Borsa, PJ Clapham, PJ Stacey, PJ Stacey, RC Best, Renaud Lambiotte, RR Reeves, SM Stanley, SM Stanley, TA Jefferson, TA Jefferson, TA Jefferson, TA Jefferson, TA Jefferson, TA Jefferson, TA Jefferson, TW Cranford, WF Perrin, WF Perrin, WF Perrin, ZX Luo   +56 more
core   +3 more sources

Clade‐wide morphological and functional variation of the sauropsid columella

The Anatomical Record, EarlyView.
Abstract The columella (=stapes) is the middle ear bone of reptiles that transmits vibrations from the environment to the inner ear. It has been shown to exhibit extensive interspecific morphological disparity in several clades; however, its morphological variation and associated functional consequences remain poorly described.
John Peacock, Serjoscha W. Evers, Tiago R. Simões, Garth M. Spellman, Daniel J. Field   +4 more
wiley   +1 more source

ORTHOMYXO- AND PARAMYXOVIRUSES IN MARINE MAMMALS

Юг России: экология, развитие, 2018
. Aim. Marine mammals play the role of "sentries", standing guard over the health and functioning of marine ecosystems. The analysis of data reported in literature was carried out to understand and to evaluate a circulation of representatives of the ...
Marina G. Gulyaeva, Alexander Yu. Alekseev, Kirill A. Sharshov, Gayirbeg M. Abdurakhmanov, Alimurad A. Gadzhiev, Madina G. Daudova, Madina Z. Magomedova, Alexander M. Shestopalov   +7 more
doaj   +1 more source

Spotted Seals, Phoca largha, in Alaska [PDF]

, 1997
The worldwide literature on management of spotted seals, Phoca largha, was reviewed and updated, and aerial surveys weref lown in 1992 and 1993 to determine the species' distribution and abundance in U.S. waters.
Rugh, David J., Shelden, Kim E. W., Withrow, David E.   +2 more
core  

Drivers of tail evolution in squamates and their implications for the fossorial origin of snakes

The Anatomical Record, EarlyView.
Abstract The axial skeleton serves as the primary structural support in all vertebrates and is subdivided into five distinct regions: cervical, thoracic, lumbar, sacral, and caudal. Relaxation of constraints acting on the terminal end of the axial skeleton has led to remarkable variation in caudal vertebrae number across Squamata.
Olivia Binfield, Marco Camaiti, Lucy Roberts   +2 more
wiley   +1 more source

Managing the Effects of Noise From Ship Traffic, Seismic Surveying and Construction on Marine Mammals in Antarctica

Frontiers in Marine Science, 2019
The Protocol on Environmental Protection of the Antarctic Treaty stipulates that the protection of the Antarctic environment and associated ecosystems be fundamentally considered in the planning and conducting of all activities in the Antarctic Treaty ...
Christine Erbe, Michael Dähne, Jonathan Gordon, Heike Herata, Dorian S. Houser, Sven Koschinski, Russell Leaper, Robert McCauley, Brian Miller, Mirjam Müller, Anita Murray, Julie N. Oswald, Amy R. Scholik-Schlomer, Max Schuster, Ilse C. Van Opzeeland, Ilse C. Van Opzeeland, Vincent M. Janik   +16 more
doaj   +1 more source