04 apr. 3.step one Variety and variety of one’s hermit crab society
step three.step 1.step 1 Sepangar coastline
A total of 850 specimens were obtained comprising of five kinds owned by one or two genera about family members Diogenidae: Clibanarius merguiensis, C. striolatus, Diogenes klaasi, D. pallescens and you will D. tumidus. The biggest kinds is actually C. striolatus (SL 5.64 ± dos.55 mm), with C. merguiensis (5.forty five ± dos.forty eight mm), D. pallescens (4.37 ± 2.39 mm), D. klaasi (cuatro.twenty eight ± 2.37 mm) and you may D. tumidus (4.14 ± step 1.86 mm). A variety try filed in the 100 m (H? = step 1.09) while the lower within 0 meters (H? = 0.00) where singular varieties (D. klaasi) are introduce. Hermit crab species at 100 m was basically one particular evenly distributed (J? = 0.79) because they was basically at least evenly delivered on 0 meters (J? = 0.00) (Table 2).
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.
Suggest thickness (+SD) of hermit crabs from the species at the an (e-f) coastlines. D. pallescens of Sepangar was not incorporated because of really low occurrence and you can try absent in the most common station.
3.1.2 Sulaman shore
There have been only one or two variety within Sulaman coast; the fresh new dominating D. foresti (SL 2.83 ± 1.03 mm) and something Diogenes sp. (Figure 3b) which had been too small (SL 1.53 ± 0.42 mm) to be completely understood. Range and you can evenness indicator just weren’t determined having hermit crabs from inside the Sulaman because of a decreased level of types. Density off D. foresti generally reduced of step 3.33 ± dos.65 ind/meters dos on 0 yards so you’re able to 0.sixteen ± 0.twenty-eight ind/yards dos at the 30 m (Figure 2e). Diogenes sp. is actually missing within 30 m and you will occurred in few that have a total mean thickness out of 0.21 ± 0.thirty-two ind/m dos . Chi-rectangular try shown zero organization (? 2 = 0.15 guardian soulmates, df = dos, p > 0.05) ranging from hermit crab species and you can station in Sulaman coastline.
3.dos Shell explore
From the Sepangar coast, all in all, 31 cover varieties were utilized of the hermit crabs with most occupied shells are Clypeomorus batillariaeformis (%) accompanied by C. bifasciata (8.61%) and Rhinoclavis sinensis (4.13%) when you’re utilization of other type out-of shells was indeed markedly lower (Desk step 3). Shells employed by hermit crabs from the route 5 looked like many varied (H? = step one.29, J? = 0.51) among all of the station whereas channel 2 are minimum of diverse (H? = 0.66, J? = 0.30) (Table cuatro). The latest constitution from hermit crabs in line with the five very filled shells is actually found into the Figure 4. The fresh new cover category ‘others’ stands for the fresh new collective proportion from hermit crabs by the kinds one to used the left 26 shell models. New blank shells regarding C. batillariaeformis manufactured most shells employed by every hermit crab variety whereas shells regarding C. bifasciata depicted generous proportion of shells employed by C. striolatus (17%), D. tumidus (11%) and you may D. klaasi (6%) (Shape cuatro). On Sulaman shore, just a few shells were used from the hermit crabs: Nassarius livescens and you can Cerithidea cingulata for the latter filled of the 98% of your hermit crabs (Desk 3).
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