step three.step one Range and wealth of your hermit crab society

3.1.1 Sepangar coastline

A total of 850 specimens was collected spanning of 5 varieties belonging to a few genera regarding the relatives Diogenidae: Clibanarius merguiensis, C. striolatus, Diogenes klaasi, D. pallescens and you may D. tumidus. The largest types was C. striolatus (SL 5.64 ± 2.55 mm), followed by C. merguiensis (5.forty-five ± dos.forty eight mm), D. pallescens (4.37 ± 2.39 mm), D. klaasi (cuatro.twenty eight ± dos.37 mm) and you will D. tumidus (cuatro.fourteen ± step 1.86 mm). The most effective assortment is actually recorded at 100 m (H? = 1.09) since low at the 0 yards (H? = 0.00) where one kinds (D. klaasi) is introduce. Hermit crab varieties at the a hundred yards had been more equally delivered (J? = 0.79) as they was basically at least evenly marketed on 0 meters (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.

Mean thickness (+SD) away from hermit crabs by kinds on a keen (e-f) coastlines. D. pallescens off Sepangar wasn’t incorporated due to low thickness and you may is absent for the majority stations.

step three.step one.dos Sulaman coastline

There are just a few variety at Sulaman coastline; brand new dominating D. foresti (SL 2.83 ± 1.03 mm) and one Diogenes sp. (Profile 3b) which was too tiny (SL step one edarling app.53 ± 0.42 mm) is fully identified. Diversity and you will evenness indices were not calculated getting hermit crabs inside the Sulaman due to a reduced amount of kinds. Density out of D. foresti generally diminished out of 3.33 ± 2.65 ind/meters dos at 0 meters in order to 0.16 ± 0.28 ind/m dos at the 29 meters (Shape 2e). Diogenes sp. try absent on 30 yards and you will occurred in few with a complete suggest thickness regarding 0.21 ± 0.32 ind/m 2 . Chi-rectangular shot shown no connection (? dos = 0.15, df = dos, p > 0.05) ranging from hermit crab kinds and station into the Sulaman coastline.

step 3.dos Cover play with

In the Sepangar coast, a total of 29 cover kinds were used of the hermit crabs with a lot of occupied shells becoming Clypeomorus batillariaeformis (%) with C. bifasciata (8.61%) and Rhinoclavis sinensis (4.13%) if you’re usage of different kind away from shells was markedly lower (Table 3). Shells employed by hermit crabs during the channel 5 appeared as if more diverse (H? = step 1.29, J? = 0.51) certainly one of every programs whereas route 2 are at least diverse (H? = 0.66, J? = 0.30) (Dining table 4). This new constitution off hermit crabs based on the four really filled shells is revealed from inside the Figure 4. New shell category ‘others’ stands for brand new collective ratio out of hermit crabs of the kinds that used the remaining twenty six layer products. The blank shells off C. batillariaeformis manufactured more shells utilized by all hermit crab varieties whereas shells away from C. bifasciata represented generous proportion out-of shells utilized by C. striolatus (17%), D. tumidus (11%) and you may D. klaasi (6%) (Figure cuatro). At the Sulaman coast, merely a couple of shells were utilized because of the hermit crabs: Nassarius livescens and you can Cerithidea cingulata with the latter filled by 98% of your own hermit crabs (Desk 3).