LIÊN KẾT DOANH NHÂN TIỀN GIANG
step 3.step 1 Assortment and you will variety of the hermit crab society

3.step 1.step 1 Sepangar coastline

All in all, 850 specimens was amassed spanning of five variety owned by two genera on family relations Diogenidae: Clibanarius merguiensis, C. striolatus, Diogenes klaasi, D. pallescens and http://datingranking.net/tr/russian-brides-inceleme/ you will D. tumidus. The biggest varieties was C. striolatus (SL 5.64 ± 2.55 mm), accompanied by C. merguiensis (5.forty five ± 2.48 mm), D. pallescens (cuatro.37 ± 2.39 mm), D. klaasi (4.twenty-eight ± dos.37 mm) and you can D. tumidus (4.14 ± step 1.86 mm). The number one variety is actually filed at one hundred m (H? = step 1.09) because the low at the 0 m (H? = 0.00) in which only 1 varieties (D. klaasi) try expose. Hermit crab species at 100 meters was indeed the essential uniformly marketed (J? = 0.79) while they was indeed at least equally marketed from the 0 m (J? = 0.00) (Dining table dos).

The overall highest density was reported for D. tumidus (8.98 ± 6.52 ind/m 2 ) which peaked at 50 m ( ± ind/m 2 ) but absent at 0 m (Figure 2a). This species was dominant at both 50 and 75 m stations (Figure 3a). Density of D. tumidus decreased gradually towards 100 m. On the other hand, D. klaasi was present in the first three stations (0, 25 and 50 m) and absent at 75 and 100 m. It was the sole species at 0 m with density of 6.25 ± 7.39 ind/m 2 . Peak density of this species was observed at 25 m ( ± ind/m 2 ) (Figure 2b). Densities of both Clibanarius species generally increased towards the sea. At the highest station (0 m), C. striolatus was absent but gradually increased in density from 25 m (0.22 ± 0.54 ind/m 2 ) to 100 m (5.33 ± 8.92 ind/m 2 ) (Figure 2c). Similarly, C. merguiensis was absent at 0 m but had density peak at 100 m (6.11 ± 7.20 ind/m 2 ). Lowest density of this species was recorded at 75 m (1.17 ± 2.07 ind/m 2 ) (Figure 2d). The results from ANOVA showed no significant difference (p > 0.05) in density among stations for all species. The least abundant species in the study was D. pallescens which was present at 50 m (0.11 ± 0.17 ind/m 2 ) and 100 m (0.11 ± 0.27 ind/m 2 ). Chi-square test revealed strong dependency/association (? 2 = , df = 16, p < 0.0001) of hermit crab species on stations/zones in Sepangar shore.

Imply thickness (+SD) off hermit crabs by the varieties at the a keen (e-f) shores. D. pallescens from Sepangar wasn’t integrated due to low occurrence and you will try absent in most stations.

step three.step 1.2 Sulaman coastline

There have been simply a couple of varieties at Sulaman shore; new prominent D. foresti (SL 2.83 ± 1.03 mm) and one Diogenes sp. (Contour 3b) which was too tiny (SL 1.53 ± 0.42 mm) are completely recognized. Range and you may evenness indicator just weren’t calculated to own hermit crabs when you look at the Sulaman due to a reduced quantity of types. Density away from D. foresti fundamentally decreased regarding step three.33 ± dos.65 ind/yards 2 during the 0 yards to help you 0.16 ± 0.twenty eight ind/m dos on 30 yards (Figure 2e). Diogenes sp. is missing at the 29 yards and occurred in few that have an overall total mean occurrence regarding 0.21 ± 0.thirty two ind/m dos . Chi-square take to shown no organization (? dos = 0.fifteen, df = 2, p > 0.05) ranging from hermit crab varieties and you will station inside Sulaman coastline.

step 3.dos Shell have fun with

From the Sepangar coastline, a total of 31 shell variety were used by hermit crabs with a lot of filled shells becoming Clypeomorus batillariaeformis (%) followed closely by C. bifasciata (8.61%) and you may Rhinoclavis sinensis (cuatro.13%) if you find yourself use of different kind out of shells had been markedly lower (Table 3). Shells used by hermit crabs at station 5 appeared as if one particular diverse (H? = step one.30, J? = 0.51) certainly most of the station while station dos is actually at least diverse (H? = 0.66, J? = 0.30) (Desk 4). The fresh composition away from hermit crabs according to the four very filled shells is revealed when you look at the Shape 4. The brand new shell group ‘others’ stands for the new cumulative ratio of hermit crabs from the varieties you to definitely utilized the left twenty six shell systems. The new empty shells from C. batillariaeformis comprised most shells utilized by most of the hermit crab kinds while shells of C. bifasciata depicted nice proportion from shells employed by C. striolatus (17%), D. tumidus (11%) and you will D. klaasi (6%) (Figure cuatro). From the Sulaman coastline, just a couple shells were used because of the hermit crabs: Nassarius livescens and you will Cerithidea cingulata towards the latter occupied of the 98% of your own hermit crabs (Dining table step 3).

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