. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. POPULATION CHARACTERISTICS OF UCA 217 6- 5- o LJ o 2 O o -I 2-. !_• — TAN o-o SUB .oo- ox o 10 20 CARAPACE WIDTH (mm) 30 FIGURE 1. Variation in ova production by different species of Uca. Abbreviations: SUB = U. sub- cvlindnca, n = 46 (O), BUR = U. burgersi, n = 6 (Ib), TRI = U. triangulam, n = 5 (O), ANN = U. annulipes, n = 7 O), RAP = U. rapax, n = 25 (bb), TAN = U. tangeri, n = 7 (•). MIN = U. minax, n = 52 (U). -*- indicates average for 1 mm width intervals from Rabalais and Cameron (1983). In addition to season of egg d
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. POPULATION CHARACTERISTICS OF UCA 217 6- 5- o LJ o 2 O o -I 2-. !_• — TAN o-o SUB .oo- ox o 10 20 CARAPACE WIDTH (mm) 30 FIGURE 1. Variation in ova production by different species of Uca. Abbreviations: SUB = U. sub- cvlindnca, n = 46 (O), BUR = U. burgersi, n = 6 (Ib), TRI = U. triangulam, n = 5 (O), ANN = U. annulipes, n = 7 O), RAP = U. rapax, n = 25 (bb), TAN = U. tangeri, n = 7 (•). MIN = U. minax, n = 52 (U). -*- indicates average for 1 mm width intervals from Rabalais and Cameron (1983). In addition to season of egg deposition, the number of ova produced in each brood or clutch is of interest. Egg size is independent of female size. General brood char- acteristics have been reported for other Texas Uca (Rabalais and Cameron, 1983). The ova and clutch dimensions of U. subcylindrica are compared to allopatric congeners in Table II. The variation in number of eggs produced by different size classes in these species is shown in Figure 1. The data for U. subcylindrica are a combination of the counts in Table I and those provided by Rabalais and Cameron (1983). Ninety-five percent of egg production occurs by individuals with carapace lengths greater than mm. In all species, as the size of the ovigerous female increases the number of ova carried per clutch becomes larger. However, there is considerable variation between species with respect to the maximum number of eggs carried by a female. The distinctive structure of the male gonopodium and female gonopore found in U. subcylindrica is shown in Figure 2. Since the reproductive structure of other Gulf Uca have been published elsewhere, only a comparison with Uca spinicarpa is made here. Both male and female structures are much larger in U. subcylindrica than other species of Uca. The tip of the gonopod is about three times as broad while the aperture and genital operculum of the gonopore are seven to eight times larger in U. subcylindric
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
