microsclere

microsclere

[′mī·krə‚sklir]
(invertebrate zoology)
A minute sclerite in Porifera.
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2.--SEM photos (A) Cherokeesia armata, megasclere, (B) Cherokeesia armata, strongyle gemmuloscleres, (C) Cherokeesia armata, protruding oxea gemmulosclere, (D) Cherokeesia armata, gemmule, (E) Corvospongilla becki, gemmuloscleres, (F) Coruospongilla becki, megasclere, (G) Corvospongilla becki, microsclere, (H) Coruospongilla becki, gemmule
5.--SEM photos (A) Heteromeyenia tubisperma, gemmuloscleres, (B) Heteromeyenia tubisperma, microsclere, (C) Heteromeyenia tubisperma, megasclere, (D) Heteromeyenia tubisperma, gemmule, (E) Heteromeyenia latitenta, gemmulosclere, (F) Heteromeyenia latitenta, microsclere, (G) Heteromeyenia latitenta, macrosclere, (H) Heteromeyenia latitenta, gemmule
To determine range, mean, and standard deviation for spicular lengths and rotule diameters 30 to 80 of each type of spicule (megascleres, microscleres, and gemmuloscleres) were measured using the measurement program of the Hitachi TM 3000.
fistula: m (+ + +); lgm (+); sgm (+) M = megasclere; am = alpha megasclere; bm = beta megasclere; mi = microsclere; gm = gemmosclere; lgm = long gemosclere; sgm = short gemmosclere; Abundant = + + +; Few = + +; rare = +.
Fully formed and well preserved megascleres and microscleres (spicules from skeleton) were dominant (Figures 2a and 2b).
Comparative morphology of microsclere structure in Spongilla alba, S.
Species identification was determined from spicule morphology of megascleres, microscleres, and gemmoscleres (Penney and Racek, 1968) and independently confirmed by M.
Gemmoscleres and microscleres were used to determine species (Poirrier, 1972).
living species) form attributed to the fossil genus Iouea, because of significant differences in the composition of the desmas and the uncertainty of microsclere geometries in the fossil genus.
tenera Schulze has microsclere populations that are mainly discohexactins.
lacustris were 220-285 [micro]m in length, and microscleres were 98-105 [micro]m; no gemmoscleres were identified from this species (Fig.
M: Megascleres, m: microscleres, g: geminose le 1rs, and were identified using the keys of Frost et al.