. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. B Figure 6. Light micrographs of the different types of pore plates found in Membranipora membranacea. Sections A through C were made parallel to the plane of the colony. A. Transverse and lateral pore plates between zooids within a colony. B. Isocontact plates. C. Allocontact plate. D. Section perpendicular to allocontact border and plane of colony showing an allocontact plate. Abbreviations: ab. allocontact border; ap, allocontact plate; ib, isocontact border; ip, isocontact plate; k, kelp; Iw, lateral zooidal wall; tp, tr
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. B Figure 6. Light micrographs of the different types of pore plates found in Membranipora membranacea. Sections A through C were made parallel to the plane of the colony. A. Transverse and lateral pore plates between zooids within a colony. B. Isocontact plates. C. Allocontact plate. D. Section perpendicular to allocontact border and plane of colony showing an allocontact plate. Abbreviations: ab. allocontact border; ap, allocontact plate; ib, isocontact border; ip, isocontact plate; k, kelp; Iw, lateral zooidal wall; tp, transverse pore plate; tw, transverse zooidal wall. Size bars = 20 ^m. carbonate dome and thus resemble the isocontact pore plates described in this study and not allocontact pore plates. Additionally, fusion pore plates, like isocontact pore plates, were variable in size and occurred irregularly in the walls formed by contact between two colonies. T. californica larvae settle within hours of release from the parental colony (Chancy, 1983), thus indicating the po- tential for substantial inbreeding in natural populations (Jackson, 1986). Consequently, although sexually pro- duced, sibling colonies may be nearly genetically identical. Thus, fusion pores plates are probably the same as iso- contact pore plates, both being characteristic of contact between genetically similar tissues. It is usually assumed that colony pairs that have the morphological characteristics of fusion are physiologically integrated, and unfused colonies are not (Humphries, 1979;Stebbing, 1973b; Buss, 1982;Chaney, 1983). How- ever, assays for physiological integration are rarely per- formed (Hidaka, 1985; Rinkevich and Loya, 1983a, b). When Rinkevich and Loya (1983a) used SEM to examine the allocontact borders between colonies of the Red Sea coral Stylophora pistillata with the morphological char- acteristics effusion, they found that the colonies were not physiologically connected. In contrast, this study h
Size: 2606px × 959px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
