. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 420 J. R. MALUSA ? E e LU Q_ O cr o rr UJ Q_ O 15 12. m DD o n] CD I -H I Q^'V'Q'Cr in1 II '19' I £ O f O O f O »7 IU II l£ MONTHS FIGURE 6. (A) The growth from settlement of Tetraclita stalactifera from three photographed quadrats in the lower Tetraclita zone. (B) The growth of the 1981 year class of Tetraclita stalactifera in two quadrats from the lower Tetraclita zone. Means, sample size and 95% confidence intervals are indicated. (C) Growth summary for Tetr
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 420 J. R. MALUSA ? E e LU Q_ O cr o rr UJ Q_ O 15 12. m DD o n] CD I -H I Q^'V'Q'Cr in1 II '19' I £ O f O O f O »7 IU II l£ MONTHS FIGURE 6. (A) The growth from settlement of Tetraclita stalactifera from three photographed quadrats in the lower Tetraclita zone. (B) The growth of the 1981 year class of Tetraclita stalactifera in two quadrats from the lower Tetraclita zone. Means, sample size and 95% confidence intervals are indicated. (C) Growth summary for Tetraclita stalactifera, plotting the means for all ages from five samples ( Fig. 6A represents a single sample). Wet body weight is inferred from the regression equation: Weight (mg) = (length [mm])28, r2 = until their second year. Even though Villalobos' grading of ovary ripeness is difficult to interpret, it is clear that there was development of the ovary without subsequent brooding. Achituv and Barnes (1978) maintained laboratory populations of T. sta- lactifera rufotincta. In July the samples had ripe ovaries with visible unfertilized eggs. In August, the condition of the ovaries regressed, yet none of the animals were brooding embryos. This is the closest parallel to the data in this study. Recruitment of T. stalactifera cyprids was predominantly on the tests of conspe- , a gregarious behavior also noted in Tetraclita squamosa of the Caribbean Sea (Bierbaum and Zischke, 1979). Settlement was heaviest in August and September, and ended by November. A minority of individuals settled on bare substrate at all intertidal levels, albeit in reduced numbers. The recruitment of barnacle cyprids in a given population may be interpreted as an indication that brooding has taken place in the same or nearby population. However,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appe
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
