Lobe-finned fishes

Table 5. Identification results for chicken ovalbumin (OVALjCHICK) and score using Mascot PMF tool. Mass error is limited to 15 PPM, M, of the protein is fixed to 45 kDa, methionines could be oxidised, cysteines are native and the NCBlnr database was used. Research for protein identification was conducted against all entries contained in the database add a second time only against "lobe-finned fish and tetrapod clade" to reduce the size of the database. Id. Rank OVALjCHICK identification rank Sc. Score Stat. significance of the result at P<0.05, Scores are significant for values higher than 62 (see section3.1.2. the description of Mascot tool). Id. Pept. number of identified peptides in the PMF output...

Tetrapods Lobe-finned fishes Ray-finned fishes Cartilaginous fishes Lampreys Hagfishes... 

The amphibians were the first vertebrates to leave the seas for dry land. They evolved from fishes about 360 million years ago. One of the challenges to living on land is that animals must be able to support their own weight rather than simply allowing water to support them. The lobed fins of the bony fishes already contained the major bones that became the limbs of the early... 

Fig. 5.2 The special features of bony fish include bony scales (a), opercula (b), highly maneuverable fins (c), a tail with its upper and lower lobes usually of equal size (d), a swim bladder that adjusts the fish s buoyancy (e), nostrils (jj, pectoral fins (g), a pelvic fin (h), an anal fin (i), lateral lines (j), dorsal fins (k), and a stomach (l).

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