Results 61 to 70 of about 1,736 (188)

First report of four deep-sea chondrichthyans (Elasmobranchii and Holocephali) from Andaman waters, India with an updated checklist from the region [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2018
This paper confirms the new distributional records of four rare deep-water chondrichthyans viz. sharpnose sevengill shark, Heptranchias perlo (Bonnaterre, 1788); bluntnose sixgill shark, Hexanchus griseus (Bonnaterre, 1788); bramble shark, Echinorhinus ...
R.R. Kumar   +4 more
doaj   +3 more sources

MYOCARDIAL STRUCTURE AND VASCULARIZATION OF THE HEART VENTRICLE IN HOLOCEPHALI: IMPLICATIONS FOR HEART EVOLUTION [PDF]

open access: yes, 2013
El resumen aparece en el Program & Abstracts of the 10th International Congress of Vertebrate Morphology, Barcelona 2013. Anatomical Record, Volume 296, Special Feature — 1: P-075.It has been classically assumed that the ventricle of the primitive ...
Durán, Ana C.   +5 more
core  

The bulbus arteriosus of the holocephalan heart [PDF]

open access: yes, 2013
El resumen aparece en el Program & Abstracts of the 10th International Congress of Vertebrate Morphology, Barcelona 2013.Anatomical Record, Volume 296, Special Feature — 1: P-074.Previous work has shown that the outflow tract of the elasmobranch heart ...
Durán, Ana C.   +5 more
core  

Tasmanian Journal of Natural Science [PDF]

open access: yes, 1969
The dates of publication of the separate parts of the tasmanian Journal of Natural Science have been determined. Some comment is made on the history of the publication of the Journal, on the quality of the articles and their scientific value, and on a ...
Plomley, NJB
core   +2 more sources

Biological characteristics of Chondrichtyes and their endangered status [PDF]

open access: yes, 2012
U ovom seminarskom radu pišem o skupini Chondrichtyes- hrskavičnjače, po meni vrlo zanimljivoj skupini kralješnjaka. Cilj mi je istaknuti njihove posebne značajke i zanimljivosti, te upozoriti na njihovu ugroženost.
Mikulić, Iva
core   +2 more sources

A new rhynchocephalian from the late jurassic of Germany with a dentition that is unique amongst tetrapods. [PDF]

open access: yes, 2012
Rhynchocephalians, the sister group of squamates (lizards and snakes), are only represented by the single genus Sphenodon today. This taxon is often considered to represent a very conservative lineage.
A Günther   +50 more
core   +2 more sources

Increased signal of fishing pressure on community life‐history traits at larger spatial scales

open access: yesGlobal Ecology and Biogeography, Volume 33, Issue 5, May 2024.
Abstract Aim Human pressure in the oceans is pervasive and affects marine life. Understanding species' differing responses to human pressure, and how human pressure compares to other environmental variables in shaping marine communities is needed to facilitate the sustainable management of the seas.
Caroline M. McKeon   +4 more
wiley   +1 more source

Darwin, Haeckel, and the “Mikluskan gas organ theory”

open access: yesDevelopmental Dynamics, Volume 253, Issue 4, Page 370-389, April 2024.
Abstract A previously unknown reference to the Russian ethnologist, biologist, and traveler Nikolai N. Miklucho‐Maclay (1846–1888) was discovered in correspondence between Charles Darwin (1809–1882) and Ernst Haeckel (1834–1919). This reference has remained unknown to science, even to Miklucho‐Maclay's biographers, probably because Darwin used the ...
Ingmar Werneburg   +2 more
wiley   +1 more source

The Immunoglobulins of Cold-Blooded Vertebrates [PDF]

open access: yes, 2014
Peer reviewedPublisher ...
Chen   +22 more
core   +2 more sources

Global governance guard rails for sharks: Progress towards implementing the United Nations international plan of action

open access: yesFish and Fisheries, Volume 25, Issue 1, Page 1-17, January 2024.
Abstract There is growing concern over the conservation status of sharks and relatives exposed to fishing mortality. The Food and Agriculture Organization of the United Nations in 1999 adopted the International Plan of Action for the Conservation and Management of Sharks (IPOA), which provides nations with advice on adopting and implementing national ...
Eric Gilman   +5 more
wiley   +1 more source

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