Most fish exchange gases using gills on either side of the pharynx (throat). Gills are tissues which consist of threadlike structures called filaments. These filaments have many functions and "are involved in ion and water transfer as well as oxygen, carbon dioxide, acid and ammonia exchange. Each filament contains a capillary network that provides a large surface area for exchanging oxygen and carbon dioxide. Fish exchange gases by pulling oxygen-rich water through their mouths and … WebCoelacanth je rod riba reda Actinistia koji uključuje dvije postojeće vrste u rodu Latimeria: celakant Zapadnog Indijskog okeana (Latimeria chalumnae), prvenstveno pronađen u blizini Komorskih otoka kod istočne obale Afrike i indonezijski celakant (Latimeria menadoensis). Tipska vrsta je †Coelacanthus granulatus. Naziv "Coelacanth" potiče od permskog roda …
The Generation of Hyperbaric Oxygen Tensions in Fish
WebThe presence of this system in Glossogobius giuris, in association with the pseudobranch, a structure considered to be precursor of carotid labyrinth, is a significant finding. In an … WebJan 6, 2024 · Conclusions: The main site of the parasite in Atlantic salmon is the pseudobranchs. Blood stages occur, but parasite proliferation is primarily associated with extravascular stages in the pseudobranchs. Disease and mortality (parvicapsulosis) coincide with the completion of sporogony. smith and wesson 1911 e series 45
Brachycentrus (Selected Aquatic Insects of Massachusetts)
WebSep 9, 2024 · The pseudobranch is a gill-like epithelial elaboration that sits behind the jaw of most fishes. This structure was classically regarded as a vestige of the ancestral gill-arch like condition of the gnathostome jaw. Web: an accessory or spurious gill (as on the inner surface of the operculum in various fishes) that is usually small and is sometimes completely hidden beneath the epithelium … WebThe choroid rete mirabile is a large horseshoe-shaped, glandlike structure located around the optic nerve in the choroid layer of the eye of many species of fishes. This rete consists of thousands of closely packed and parallel arterial and venous capillaries with a countercurrent flow of blood. smith and wesson 1911 e series