. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Lane: 1 603. 710 465 393 317 222 23 Figure 4. Restriction fragment banding pattern of the two Mid-Atlan- tic Ridge Baihymodiolus haplotypes upon digestion of the mitochondrial ND4 PCR fragment with Cac 81. Lanes from left to right are (1) Phi-X Hind III ladder; (2) Snake Pit; (3) Lucky Strike; (4) Logatchev; (5) uncut PCR fragment. Table IV Allozyme diversity in Mid-Atlantic Ridge Bathymodiolus species Site n Pg< W.,hs Hc, Lucky Strike () () Snake Pit 50 ) (SE0.
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Lane: 1 603. 710 465 393 317 222 23 Figure 4. Restriction fragment banding pattern of the two Mid-Atlan- tic Ridge Baihymodiolus haplotypes upon digestion of the mitochondrial ND4 PCR fragment with Cac 81. Lanes from left to right are (1) Phi-X Hind III ladder; (2) Snake Pit; (3) Lucky Strike; (4) Logatchev; (5) uncut PCR fragment. Table IV Allozyme diversity in Mid-Atlantic Ridge Bathymodiolus species Site n Pg< W.,hs Hc, Lucky Strike () () Snake Pit 50 ) () Logatchev 42. X6 () ().146() n = mean sample size; P,5 = percentage of polymorphic loci (95% criteria); //obs and Hcff = observed and expected mean heterozygosity per sample (standard errors in parentheses). Craddock et al. (1995a) did not identify intraspecific polymorphisms in an earlier study that examined 26 gene loci in two mussels from Lucky Strike and two from Snake Pit. Techniques used in this earlier study were optimized to show interspecific differences between more divergent mus- sel species from the Gulf of Mexico, and thus failed to identify intraspecific variation within the MAR samples. The present study used techniques that were optimized to show the interspecific allozyme differences between B. puteoserpentis and B. n. sp. Using a subset of 14 loci reported by Craddock et al. (1995a), we found a high percentage of polymorphism in each population sample (Table IV). Interspecific monomorphic loci were not exam- ined in this study; thus, the present estimates of polymor- phism and heterozygosity should not be used in comparative analyses of genetic diversity. Nei's (1978) genetic distances (D values) were estimated between the mussel populations from the three locations (Table III). The D value between the Logatchev and Snake Pit samples of B. puteoserpentis was , and the average D value between the two B. puteoserpentis samples an
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
