step 3.step one Range and you may variety of one’s hermit crab society

step 3.step one Range and you may variety of one’s hermit crab society

step three.1.step 1 Sepangar coastline

All in all, 850 specimens was basically collected comprising of five variety owned by one or two genera in the loved ones Diogenidae: Clibanarius merguiensis, C. striolatus, Diogenes klaasi, D. pallescens and you will D. tumidus. The largest kinds is C. striolatus (SL 5.64 ± 2.55 mm), accompanied by C. merguiensis (5.45 ± dos.forty eight mm), D. pallescens (cuatro.37 ± 2.39 mm), D. klaasi (cuatro.twenty eight ± 2.37 mm) and you can D. tumidus (4.fourteen ± 1.86 mm). Best assortment was recorded within one hundred m (H? = step 1.09) given that reasonable at the 0 yards (H = 0.00) where only one kinds (D. klaasi) are establish. Hermit crab varieties on 100 yards was indeed the most equally marketed (J? = 0.79) while they have been the least equally marketed at 0 yards (J? = 0.00) (Desk 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 from the types within an enthusiastic (e-f) coastlines. D. pallescens off Sepangar was not included due to suprisingly low occurrence and you may try absent in most channels.

step 3.1.dos Sulaman shore

There have been just several types on Sulaman coastline; the newest dominating D. foresti (SL dos.83 ± step 1.03 mm) and something Diogenes sp. (Shape 3b) that was too small (SL 1.53 ± 0.42 mm) are fully known. Diversity and you can evenness indices were not calculated getting hermit crabs into the Sulaman on account of a reduced level of kinds. Density away from D. foresti fundamentally diminished off 3.33 ± dos.65 ind/m dos during the 0 meters to 0.sixteen ± 0.twenty-eight ind/meters 2 at 30 meters (Shape 2e). Diogenes sp. is absent on 31 yards and you may occurred in small number that have an overall indicate occurrence regarding 0.21 ± 0.32 ind/m dos . Chi-rectangular test revealed no connection (? dos = 0.fifteen, df = 2, p > 0.05) ranging from hermit crab variety and you will station within the Sulaman coast.

step 3.2 Layer fool around with

At Sepangar coastline, a maximum of 29 cover species were utilized because of the hermit crabs with many occupied shells getting Clypeomorus batillariaeformis (%) accompanied by C. bifasciata (8.61%) and you may Rhinoclavis sinensis (cuatro.13%) while you are use of other type from shells was basically significantly lowest (Dining table step three). Shells used by hermit crabs on channel 5 looked like more varied (H? = 1.29, J? = 0.51) one of all of the station while station 2 try the least varied (H? = 0.66, J? = 0.30) (Desk cuatro). This new constitution from hermit crabs in line with the five really occupied shells is revealed when you look at the Shape 4. Brand new layer category ‘others’ is short for the latest collective proportion off hermit crabs from the types that made use of the left twenty six shell designs. The fresh new blank shells regarding C. batillariaeformis made up more shells used by all of the hermit crab variety while shells of C. bifasciata represented good-sized ratio off shells utilized by C. striolatus (17%), D. tumidus (11%) and you may D. klaasi (6%) (Contour cuatro). From the Sulaman coast, simply a few shells were used from the hermit crabs: Nassarius livescens and you may Cerithidea cingulata towards the second occupied by 98% of your own hermit crabs (Table step 3).

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