. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. POSH MKRYONK (iROWTH IN LIGIA 225. Figure 1. (A) Schematic drawing of Ligia with the four lengths monitored indicated by small letters: (a) length of antennae, (b) length of body excluding antennae and uropods, (c) length of uropods alone, and (d) total body length. (B) Head region with eyes in black, viewed from above and showing horizontal ( = anteroposterior) extent of eye measurable as e. and head region seen from the front with dorsoventral extent of the eye measurable as f. (C) Scanning electron microgra
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. POSH MKRYONK (iROWTH IN LIGIA 225. Figure 1. (A) Schematic drawing of Ligia with the four lengths monitored indicated by small letters: (a) length of antennae, (b) length of body excluding antennae and uropods, (c) length of uropods alone, and (d) total body length. (B) Head region with eyes in black, viewed from above and showing horizontal ( = anteroposterior) extent of eye measurable as e. and head region seen from the front with dorsoventral extent of the eye measurable as f. (C) Scanning electron micrograph of the outer surface of the compound eye of L. exotica, showing facets with hexagonal outlines. Ommatidial diameter was defined as the corner-to-corner distance (g). while debris on the cornea (white arrows) served as landmarks, assisting in identifying specific places on the eye. (D) Schematic drawing (left) and photomicrograph (right) of longitudinally sectioned ommatidia. Diameter of a facet was measured as g at the cornea (Cr), length of the dioptric apparatus, h, with the spherical crystalline cone (Cc) at its center, was defined as the distance from the corneal surface to the distal tip of the rhabdom, and the length of the retina, i. covered the distance between distal tip of the rhabdom (R) and basement (Bm). The angle Va defined the visual angle of an ommatidium. Results All individuals of Ligia exotica examined, irrespective of size, possessed apposition-type compound eyes with a hex- agonal ommatidial lattice. The eyes were always sessile and occupied almost the entire lateral region of the head (Fig. 1A, B). The eyes were uniformly black; the ommatidial arrangement showed no obvious morphological differences. except for the marginal row of ommatidia all around the edge of the eye, in which smaller and seemingly immature ommatidia prevailed. First we determined the relationship between individual weights and sizes. Size was used in preference to age, since (a) foo
Size: 1646px × 1518px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
