Scartella cristata - Amazon S3

47
45
Florida
n=9
45
Port Aransas
n=19
30
30
15
15
Frequency
0
45
0
1 2 3 4 5 6 7 8 9 10 11 12 13
Galvesto n
n=20
0
45
0
1 2 3 4 5 6 7 8 9 10 11 12 13
South Pa dre Island
n=19
30
30
15
15
0
0
1 2 3 4 5 6 7 8 9 10 11 12 13
Number of Pairwise Differences
Fig. 25. Mis match distributions(histogram ) and their expected Poisson distribution for mtDNA D-loop sequence s of
Scartella crista ta from Florida, Galveston, Port Aransas, and South Padre Island, TX.
0
0
1 2 3 4 5 6 7 8 9 10 11 12 13
DISCUSSION AND CONCLUSION
Structure and Composition of Blenny Assemblages on Texas Jetties
Variability in Species Composition
The data suggests that blenny assemblages are different in species composition, diversity and
evenness among the locations sampled. Assemblages on the upper Texas coast at Galveston were
dominated to similar extents by Hypleurochilus geminatus and Scartella cristata. Hypsoblennius ionthas
also occurred sporadically on these jetties. Four blenny species were captured on jetties from the middle
Texas coast at Port Aransas. Scartella cristata was the dominant species, but H. geminatus and
Labrisomus nuchipinnis were taken regularly. Hypsoblennius hentz was a fourth but rare inhabitant of
jetties in this area. Differences between Port Aransas stations 2 and 3 suggest that these sites may not
encompass the range of variability blenny assemblages encounter on a jetty. Despite exhibiting similar