IO = intromittent organ; DCT = dense connective tissue; LCT = loose connective tissue; FR = fin ray
Precision and relative accuracy of striped bass age estimates from otoliths, scales, and anal fin rays
php) statement : "For years, scientists have thought that fin rays
were completely unrelated to fingers and toes, utterly dissimilar because one kind of bone is initially formed out of cartilage and the other is formed in simple connective tissue.
7L comes from the middle part of the anal fin where there are the longest fin rays
Eight-17 pored lateral-line scales; anal-fin with 18-22 branched rays; outer premaxillary row with two-three teeth; six branched pelvic fin rays
Both dorsal fins have dull red and brown zig-zag stripes and flecks and, particularly in large adult males, the first three fin rays
of the first fin can be elongated and swept back in graceful curves.
It's reasonable to suppose with those big fin rays
that Tiktlik used its hind fins to swim like a paddle," Shubin said.
And although no femur bone was found, pelvic fin material, including long fin rays
, indicated the hind fin was at least as long and as complex as its forefin.
Principal component and/or discriminant functions revealed that meristic characters were highly correlated with pectoral fin ray
count, number of lateral line scales, as well as number of anal fin rays
They reported that correlation coefficients were lower and significant biases towards inaccurate aging were greater in dorsal fin spines and pectoral fin rays
relative to other aging structures used.
Various structures have been used in osseochronometry of fishes, including scales, otoliths, fin rays
and spines, and opercular bones.
Many structures have been used to estimate the age of fishes, including scales, otoliths, vertebrae, fin rays
and spines, opercular bones, cleithra, urohyal bone, and hyomandibular bone.
The individual fin rays
are composed of longitudinally aligned segmented bones whose shape resembles that of a bamboo tree.
3M-P) from between the bases of the 2nd dorsal and anal fin rays
(the 1st dorsal fin was not studied) cover the ovoidal distal radials (Hilton et al.
clara specimens, nine meristic characters were recorded following methods of Williams (1975), including numbers of dorsal fin spines, dorsal fin rays
, anal fin rays
, left pectoral fin rays
, lateral line scales, scales above lateral line, scales below lateral line, transverse scale rows and preoperculomandibular canal pores.