preanal


Also found in: Dictionary.

pre·a·nal

(prē-ā'năl),
Anterior to the anus.

preanal

[prē·ā′nəl]
located anterior to the anus.

preanal

(prē-ā′năl) [″ + anus, anus]
In front of the anus.
References in periodicals archive ?
6) in SL; origin of anal fin below first soft ray of second dorsal fin, the preanal length 1.
N = 85 Mean Mode Meristic measures Scales in lateral series 40 40 Gill rakers on lower limb of the 38 38 first gill arch Prepelvic scutes 16 16 Postpelvic or preanal scutes 12 12 Dorsal fin rays 15 15 Anal fin rays 15 16 Morphometric measures in thousandths of the standard length Cephalic length 239.
1998): body length (BL), distance from the tip of the snout to the notochord tip (in preflexion and flexion larvae), and to the posterior margin of the hypural bones (postflexion larvae and posttransition juvenile); eye diameter (ED), longest diameter of the eye; snout length (SnL), distance from the tip of the snout to the anterior margin of the eye; head length, distance from the tip of the snout to the posterior margin of the opercle; body depth, vertical distance on pectoral fin base; preanal length, distance from the tip of the snout to the anus.
Some previously identified sexual differences in the gecko include enlarged preanal pores and post-cloacal bones in mature males that are not obvious in immature males and females (Selcer 1986).
0) in HL; origin of anal fin below base of first or second dorsal soft ray, preanal length 1.
The following characters met the assumptions required for ANCOVA: head length, snout length, orbit length, interorbital width, postorbital length, upper jaw length, body depth 1, body depth 2, body width, caudal peduncle depth, upper peduncle length, pectoral-fin length, pelvic-fin length, dorsal-fin base length, spinous dorsal-fin base length, soft dorsal-fin base length, preanal length, predorsal length, prepelvic length, pelvic-to-anal-fin length, 2nd dorsal-fin spine length, 3rd dorsal-fin spine length, and gill taker length.
The following characters exhibited normal distributions and did not differ significantly in variance between species and thus were subjected to ANCOVA: orbit length, snout length, suborbital depth, gill-raker length, body depth at anal-fin origin, body depth at anal-fin insertion, dorsal-fin spine 1 length, dorsal-fin spine 4 length, pectoral-fin base depth, pectoral-fin ray length, pelvic-fin ray length, pelvic-fin spine length, anal-fin spine 1 length, anal-fin spine 3 length, preanal length, spinous-dorsal-fin base length, soft-dorsal-fin base length, and anal-fin base length.
flavidus are distinguished from other pholids by their total vertebral counts, the presence of a thick and grooved first anal spine, a preanal length that is approximately 60% standard length (SL), and a dark green to light olive coloration (Yatsu, 1981).
7) in SL; origin of anal fin below base of first soft dorsal fin ray, preanal length 1.
Total length (TL), body length (=standard length), head length (HL), predorsal length (PDL), and preanal length (PAL) were measured to the nearest 1 mm.
PAL = preanal length; distance from the tip of the snout to the origin of the anal fin, measured along the midline.