Results 91 to 100 of about 83,522 (250)

Effects of nicotine exposure on murine mandibular development.

open access: yesPLoS ONE, 2019
Nicotine is known to affect cell proliferation and differentiation, two processes vital to proper development of the mandible. The mandible, the lower jaw in mammals and fish, plays a crucial role in craniofacial development.
E L Durham   +7 more
doaj   +1 more source

Novel adverse outcome pathways revealed by chemical genetics in a developing marine fish

open access: yeseLife, 2017
Crude oil spills are a worldwide ocean conservation threat. Fish are particularly vulnerable to the oiling of spawning habitats, and crude oil causes severe abnormalities in embryos and larvae.
Elin Sørhus   +7 more
doaj   +1 more source

Whales, dolphins, and porpoises of the eastern North Pacific and adjacent Arctic waters: a guide to their identification [PDF]

open access: yes, 1982
This is an identification guide for cetaceans (whales, dolphins, and porpoises), that was designed to assist laymen in identifying cetaceans encountered in eastern North Pacific and Arctic waters.
Evans, William E.   +4 more
core  

Occurrence of Clinostomum Metacercariae in Oreochromis mossambicus from Mashoko Dam, Masvingo Province, Zimbabwe

open access: yesScientifica, 2018
Mashoko Dam is in Ago-ecological Region 4 in Zimbabwe. Five sampling sites were randomly selected and each site was sampled twice per month, for six months. A total of 180 Oreochromis mossambicus fish (101 females and 79 males) were caught. The fish were
Casper Mutengu, Wilson Mhlanga
doaj   +1 more source

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

Apletodon gabonensis, a new species of clingfish (Teleostei: Gobiesocidae) from Gabon, eastern Atlantic Ocean [PDF]

open access: yes, 2019
The clingfish Apletodon gabonensis sp. nov. is described on the basis of seven specimens and colour photographs from Gabon, eastern Atlantic Ocean. The species is small, apparently not exceeding 20 mm total length; it is characterized by having 5 dorsal ...
Fricke, Ronald, Wirtz, Peter
core  

An Annotated Checklist of the Freshwater Fishes of Texas, with Keys to Identification of Species [PDF]

open access: yes, 1991
Forty-five families and 247 species of fishes are known to inhabit the freshwaters of Texas. We report on the distribution and status of these fishes and provide a key to their identification.
Edwards, Robert J.   +2 more
core   +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

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