نتایج جستجو برای: actinopterygii
تعداد نتایج: 1048 فیلتر نتایج به سال:
Information about the food sources for fish is important not only predation and competition, but also direct impact on organism interactions, relationships, biodiversity within aquatic ecosystems. We analyzed of 21 species in 9 families 6 orders based literature data from brackish ecosystems South Korea to improve understanding estuarine ecosystem. The contained 173 families, 86 orders, 39 clas...
The symmetrical, flexible teleost fish 'tail' has been a prime example of recapitulation - evolutionary change (phylogeny) mirrored in development (ontogeny). Paleozoic ray-finned fishes (Actinopterygii), relatives of teleosts, exhibited ancestral scale-covered tails curved over their caudal fins. For over 150 years, this arrangement was thought to be retained in teleost larva and overgrown, mi...
With about 24,000 extant species, teleosts are the largest group of vertebrates. They constitute more than 99% of the ray-finned fishes (Actinopterygii) that diverged from the lobe-finned fish lineage (Sarcopterygii) about 450 MYA. Although the role of genome duplication in the evolution of vertebrates is now established, its role in structuring the teleost genomes has been controversial. At le...
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