3.step 1 Range and you may abundance of one’s hermit crab neighborhood

step 3.step 1.1 Sepangar shore

A total of 850 specimens was built-up spanning of five types owned by several genera about friends Diogenidae: Clibanarius merguiensis, C. striolatus, Diogenes klaasi, D. pallescens and you can D. tumidus. The largest species is actually C. striolatus (SL 5.64 ± dos.55 mm), followed closely by C. merguiensis (5.45 ± 2.forty-eight mm), D. pallescens (4.37 ± 2.39 mm), D. klaasi (4.28 ± 2.37 mm) and you seniorpeoplemeet will D. tumidus (cuatro.fourteen ± 1.86 mm). The best range is filed at a hundred yards (H? = 1.09) due to the fact reduced within 0 meters (H? = 0.00) in which one varieties (D. klaasi) are establish. Hermit crab kinds during the one hundred meters was the most evenly delivered (J? = 0.79) as they was in fact the least uniformly marketed at 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.

Indicate thickness (+SD) away from hermit crabs by the kinds during the an enthusiastic (e-f) beaches. D. pallescens away from Sepangar was not included on account of suprisingly low thickness and you will was missing in the most common channels.

step 3.step one.2 Sulaman coastline

There had been simply two variety during the Sulaman coast; the brand new prominent D. foresti (SL dos.83 ± step one.03 mm) and another Diogenes sp. (Profile 3b) which was too small (SL step one.53 ± 0.42 mm) to-be totally understood. Assortment and evenness indices weren’t determined to possess hermit crabs inside the Sulaman because of a reduced number of types. Occurrence off D. foresti fundamentally decreased regarding step three.33 ± dos.65 ind/m 2 on 0 meters to 0.16 ± 0.twenty-eight ind/yards dos from the 29 yards (Shape 2e). Diogenes sp. are missing from the 31 m and you may took place small number having a complete imply density of 0.21 ± 0.thirty two ind/yards 2 . Chi-rectangular take to shown zero association (? dos = 0.15, df = 2, p > 0.05) ranging from hermit crab kinds and you may route in Sulaman coast.

3.2 Shell fool around with

Within Sepangar coast, a total of 29 layer varieties were utilized from the hermit crabs with many occupied shells becoming Clypeomorus batillariaeformis (%) followed closely by C. bifasciata (8.61%) and you may Rhinoclavis sinensis (cuatro.13%) when you are use of other type away from shells had been markedly reasonable (Table step three). Shells utilized by hermit crabs on station 5 appeared to be the most diverse (H? = step one.31, J? = 0.51) certainly every stations whereas route 2 are the least varied (H? = 0.66, J? = 0.30) (Dining table 4). The composition of hermit crabs according to research by the four really filled shells are revealed during the Profile cuatro. The fresh new layer classification ‘others’ represents this new collective ratio out-of hermit crabs by the variety you to definitely made use of the kept 26 cover versions. The fresh new blank shells out of C. batillariaeformis made up more shells used by the hermit crab species whereas shells out-of C. bifasciata depicted large ratio off shells used by C. striolatus (17%), D. tumidus (11%) and you will D. klaasi (6%) (Profile 4). At Sulaman shore, only one or two shells were used by hermit crabs: Nassarius livescens and you may Cerithidea cingulata on second filled of the 98% of hermit crabs (Table step 3).