Results 191 to 200 of about 10,818 (235)

Assessment of metallic trace elements in the muscles and fins of four landed elasmobranchs from Kuala Terengganu Waters, Malaysia

Marine Pollution Bulletin, 2017
M. Ong, S. Gan
exaly   +2 more sources

Adaptive mechanisms in the elasmobranch hindbrain

Journal of Experimental Biology, 1999
ABSTRACT The suppression of self-generated electrosensory noise (reafference) and other predictable signals in the elasmobranch medulla is accomplished in part by an adaptive filter mechanism, which now appears to represent a more universal form of the modifiable efference copy mechanism discovered by Bell. It also exists in the gymnotid
, Bodznick, , Montgomery, , Carey
openaire   +2 more sources

The Elasmobranch Ovary

2011
Few studies of sex differentiation in elasmobranchs exist. Chieffi's comparative work on Torpedo ocel/ata, T. marmora/a, and Scy!iorhinus canicula are the most complete, and his comparisons with other published accounts of sex differentiation (Picon 1962) show parallels.
openaire   +1 more source

Genetic damage in elasmobranchs: A review

Environmental Toxicology and Pharmacology
DNA integrity is crucial for organismal health, and assessing DNA damage in aquatic organisms is essential for identifying environmental threats and informing conservation efforts. Pollutants such as metals, hydrocarbons, agrochemicals, pharmaceuticals, and climate change are linked to genetic damage, oxidative stress, and mutagenesis in several ...
Mateus Brandão, Marques, Ricardo, Luvizotto-Santos, Rachel Ann, Hauser-Davis   +2 more
openaire   +2 more sources

Audition in Elasmobranchs

1981
This article presents a current assessment of elasmobranch auditory biology and an evaluation of future directions for research. Excellent review articles have recently detailed the pre-1975 development of this field (Popper and Fay 1977, Myrberg 1978), so I will not emphasize that work.
openaire   +1 more source

The postorbital palatoquadrate articulation in elasmobranchs

Journal of Morphology, 2008
AbstractAlthough modern hexanchiforms are the only extant elasmobranchs with a postorbital articulation, according to most morphological and molecular cladistic analyses they are not basal, suggesting that Huxley (1876Proc Zool Soc 1876;24–59) correctly identified this articulation as “an altogether secondary connection.” A postorbital articulation is ...
openaire   +2 more sources

Electroreception and the Ampullæ of Lorenzini in Elasmobranchs

Nature, 1964
RECENT investigations of the sensitivity of certain groups of fishes to minute local potential changes have revealed the fact that all members of these groups possess specialized neuromasts in addition to their ordinary lateral-line organs. Whereas the ordinary organs are used as ‘distant touch’ receptors, responding to mechanical stimuli, several ...
openaire   +2 more sources

Mineralization patterns in elasmobranch fish

Microscopy Research and Technique, 2002
AbstractThis article reviews current findings on the organic matrix and the mineralization patterns in elasmobranchs, including an analysis of the role of the dental epithelial cells and the odontoblasts during odontogenesis. Our electron micrographs demonstrated that tubular vesicles limited by a unit membrane occupied the bulk of the elasmobranch ...
openaire   +2 more sources

Elasmobranchs.

Science (New York, N.Y.), 2010
openaire   +3 more sources

Identification and Delineation of Essential Habitat for Elasmobranchs in Estuaries on the Texas Coast

Estuaries and Coasts, 2020
D. Swift, D. Portnoy
semanticscholar   +1 more source