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Few studies had been done to determine whether all of the gill arches play an equal part in gaseous exchange or whether more of the respiratory current passes over some gill arches than others.

Spatial Distribution of Myxobolus Pethericii and Henneguya Pethericii on the Gills of an African Anabantid Ctenopoma Petherici from the Sange River, Cameroon

Among a high number of morphological and osteological characters, they also used the morphology of rakers and teeth, the number of gill rakers and teeth and the number of rows of the rakers on gill arches as well as the rows of teeth on tooth plates.

Gill rakers and teeth of three pleuronectiform species (Teleostei) of the Baltic Sea: a microichthyological approach/Kolme Laanemere lestalise (Pleuronectiformes, Teleostei) lopusepiid ja hambad: mikroihtuoloogiline kasitlus

The gill rakers are located on the concave internal side of the gill arches. Grossly, each gill arch has two rows of rakers; small lateral and slightly larger medial rakers (Figs.

Morphological Studies on the Gills of Puffer Fish (Lagocephalus sceleratus, Gmelin, 1789)/Estudios Morfologicos en Branquias del Pez Globo (Lagocephalus sceleratus, Gmelin, 1789)

melanoptents, with approximately 1100 denticles per c[m.sup.2] in the oral cavity and up to about 1600 denticles per c[m.sup.2] on the gill arches. Pharyngeal pads exist on the fifth gill bar only, and no ridged edges are present.

Structure and topographic distribution of oral denticles in elasmobranch fishes

What we call the skull in humans was formed from a combination of the primitive brain case (chondrocranium), the sensory capsules and their underlying supports, components of the visceral skeleton (gill arches and their derivatives), and the overlying dermal bones (dermatocranium).

Phylogeny and embryology of the facial nerve and related structures. Part I: phylogeny

The present investigation carried out basically with ecological indexes was aimed to study the monthly colonization of the various gill arches of Oreochromis niloticus (Linne, 1758) by four monopisthocotylea monogenean species.

Longitudinal exploitation of the transversal gradient of Oreochromis niloticus (Linne, 1758) gill system by Four Monogenean Species at Melen Fish Station (Yaounde, Cameroon)

The gills of the most external gill arches were removed, always on the right-hand side of the fish.

Responses of Nile tilapia to different levels of water salinity/ Respuestas de la tilapia del Nilo a diferentes niveles de salinidad del agua

Gill morphology was normal, formed by gill arches, primary and secondary lamellae.

Histopathological evaluation of seven Amazon species of freshwater ornamental armored catfish/Avaliacao histopatologica em sete especies de cascudos ornamentais amazonicos

We determined rates of metacercarial infection for each fish by removing the four left gill arches. Gill arches were examined with a dissecting microscope to enumerate and identify the developmental stage of all enclosed metacercariae.

Distribution and occurrence of the exotic digenetic trematode (Centrocestus formosanus), its exotic snail intermediate host (Melanoides tuberculatus), and rates of infection of fish in springs systems in Western Texas

After infections, fish were killed and gill arches isolated into chilled phosphate-buffered saline (PBS) awaiting analysis of gill infection intensity using a stereomicroscope (Zeiss, SteREO Lumar .V12).

Influence of cortisol on the attachment and metamorphosis of larval Utterbackia imbecillis on bluegill sunfish (Lepomis macrochirus)

Next, the most external gill arches were removed, always from the left side of the fish.

Histopathologic alterations observed in fish gills as a tool in environmental monitoring/Alteracoes histopatologicas observadas nas branquias de peixes como instrumento no monitoramento ambiental

branchial arch

branchial arch

branchial arch

pha·ryn·ge·al arch