Results 91 to 100 of about 12,163 (205)

Absonifibula estuarina sp. n. (Monogenea: Diclidophoridae) parasite of juvenile Cynoscion guatucupa (Osteichthyes) from southwestern Atlantic Ocean

open access: yesMemorias do Instituto Oswaldo Cruz, 2009
Absonifibula estuarina sp. n. (Diclidophoridae, Absonifibulinae), is described from the gills of juvenile striped weakfish, Cynoscion guatucupa (Cuvier), from the southwestern Atlantic, Argentinean coast.
Cláudia Portes Santos, Juan Tomás Timi
doaj   +1 more source

Insight Into Trophic Niche Differentiation in Labeobarbus (Cyprinidae) in the Luhoho Basin (Upper Congo Basin)

open access: yesEcology and Evolution
Mouth morphology plays a crucial role in determining the trophic ecology of fish and sometimes underpins important lineage diversification. Freshwater teleost fish species belonging to the genus Labeobarbus, commonly found in Africa, exhibit intra‐ and ...
Tchalondawa Kisekelwa   +11 more
doaj   +1 more source

Form and function of damselfish skulls: rapid and repeated evolution into a limited number of trophic niches

open access: yesBMC Evolutionary Biology, 2009
Background Damselfishes (Perciformes, Pomacentridae) are a major component of coral reef communities, and the functional diversity of their trophic anatomy is an important constituent of the ecological morphology of these systems.
Cooper W James, Westneat Mark W
doaj   +1 more source

Synovial joints were present in the common ancestor of jawed fish but lacking in jawless fish

open access: yesPLOS Biology
Synovial joints, characterized by reciprocally congruent and lubricated articular surfaces separated by a cavity, can simultaneously provide mobility and load bearing. Here, we study the early evolution of synovial joints by examining the morphological, genetic, and molecular features required for the development and function of the joints in ...
Sharma, Neelima   +2 more
openaire   +4 more sources

Evidence for the prepattern/cooption model of vertebrate jaw evolution. [PDF]

open access: yes, 2010
The appearance of jaws was a turning point in vertebrate evolution because it allowed primitive vertebrates to capture and process large, motile prey. The vertebrate jaw consists of separate dorsal and ventral skeletal elements connected by a joint.
Bronner-Fraser, M   +17 more
core   +1 more source

V.—Note on Plectrodus, the Jaw of an Upper Silurian Fish [PDF]

open access: yesGeological Magazine, 1917
When fish-remains were first discovered in the Ludlow bone-bed and other horizons of the Upper Silurian series, some of the fragments were regarded as toothed jaws by Agassiz, who described them under the names of Plectrodus mirabilis, P. pleiopristis , and Sclerodus pustuliferus .
openaire   +2 more sources

A dynamic model of mouth closing movements in clariid catfishes: the role of enlarged jaw adductors [PDF]

open access: yes, 2005
Some species of Clariidae (air breathing catfishes) have extremely large (hypertrophied) jaw closure muscles. Besides producing higher bite forces, the enlarged muscles may also cause higher accelerations of the lower jaw during rapid mouth closure. Thus,
VAN WASSENBERGH, S   +5 more
core   +1 more source

Diseases of Asian seabass (or barramundi), Lates calcarifer Bloch [PDF]

open access: yes, 2012
Other than the study by Griffiths (2009) on gill diseases, there has been no comprehensive study and report on the major diseases of Asian seabass (or barramundi) Lates calcarifer Bloch.
Gibson-Kueh, Susan
core   +1 more source

Ecomorphological adaptation to oxygen deficiency in Amazon floodplains by serrasalmid fish of the genus Mylossoma [PDF]

open access: yes, 1988
Serrasalmids of the genus Mylossoma are obligate gill‐breathers that are encountered in the floodplain lakes of Amazonia, even when the oxygen concentrations there are below 0.5 mg l−1.
Soares, Gercilia M., Saint-Paul, Ulrich
core   +1 more source

Acanthodian fishes with dentigerous jaw bones: The Ischnacanthiformes and Acanthodopsis [PDF]

open access: yes, 2004
Within the early gnathostome group Acanthodii, several different types of dentition are exhibited. Of the Siluro-Devonian acanthodians, some of the Climatiidae and the Brochoadmonidae have rows of small tooth whorls lining their jaws, while the ...
Burrow, C. J.
core  

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