scholarly journals Shell utilization pattern of the Hermit crab Clibanarius rhabdodactylus Forest, 1953 on rocky shores of the Saurashtra coast, Gujarat State, India

2020 ◽  
Vol 2 (4) ◽  
pp. 33-43
Author(s):  
Pooja R Patel ◽  
Krupal J Patel ◽  
Kauresh D Vachhrajani ◽  
Jigneshkumar N Trivedi ◽  
◽  
...  
Keyword(s):  
Hermit Crab ◽  
Rocky Shores ◽  
Utilization Pattern ◽  
Gujarat State ◽  
Saurashtra Coast

scholarly journals Shell utilization pattern of the hermit crab Clibanarius vittatus (Crustacea, Anomura) in an estuary at São Vicente, State of São Paulo, Brazil

2006 ◽  
Vol 96 (2) ◽  
pp. 261-266 ◽  
Author(s):  
Bruno S. Sant'Anna ◽  
Cilene M. Zangrande ◽  
Alvaro L. D. Reigada ◽  
Marcelo A. A. Pinheiro
Keyword(s):  
Hermit Crab ◽  
Sao Paulo ◽  
Hermit Crabs ◽  
Size Difference ◽  
São Paulo ◽  
Utilization Pattern ◽  
Shell Size ◽  
Stramonita Haemastoma ◽  
Clibanarius Vittatus ◽  
Shield Length

We evaluated the gastropod shell utilization pattern of the hermit crab Clibanarius vittatus (Bosc, 1802) at Pescadores Beach in São Vicente, State of São Paulo, Brazil. Specimens were collected monthly from May 2001 through April 2003, in the intertidal zone at low tide. The crabs were weighed and their carapace shield length measured. All gastropod shells were identified and had their shell biometric parameters (total length and aperture length) measured (mm) and weighed (g). A total of 2,344 hermit crabs (644 males, 1,594 females, 45 ovigerous females and 61 individuals in intersex), using 13 species of gastropod shells, were collected. Stramonita haemastoma (Linnaeus, 1767), Cymatium parthenopeum (Von Salis, 1793) and Achatina fulica (Bowdich, 1822) comprised over 98% of all the shells. Male and intersex crabs were significantly larger than the females. This size difference strongly influenced the shell utilization pattern, principally in A. fulica, which has the largest shell size, that was only used by males and intersexual individuals of C. vittatus. Cymatium parthenopeum was the only shell species that showed a high determinant coefficient in all the biometric correlations evaluated. The high abundance of S. haemastoma shells and a strong correlation between crab size and shell aperture length established by a significant determination coefficient, indicated that C. vittatus uses this species as the principal resource for shell occupation at Pescadores Beach.

scholarly journals First record of Cryptopodia angulata H. Milne Edwards and Lucas, 1841 from Saurashtra coast, Gujarat, India (Decapoda: Brachyura: Parthenopidae)

Check List ◽  
2014 ◽  
Vol 9 (4) ◽  
pp. 897 ◽  
Author(s):  
Jigneshkumar N. Trivedi ◽  
Kauresh D. Vachhrajani
Keyword(s):  
Adult Female ◽  
East Coast ◽  
First Record ◽  
Gujarat State ◽  
East Coast Of India ◽  
First Report ◽  
Trawl Catch ◽  
Saurashtra Coast ◽  
Indian Waters ◽  
First Time

Cryptopodia angulata is reported for the first time from Saurashtra coast of Gujarat state. One adult female was found in trawl catch near Sutrapada village of Saurashtra coast on January, 2012. Although the species is not common in Indian waters, this species has been reported from the south east coast of India. This is the first report from Saurashtra coast.

Population structure and shell use in the hermit crab, Clibanarius erythropus: a comparison between Mediterranean and Atlantic shores

2001 ◽  
Vol 81 (1) ◽  
pp. 77-84 ◽  
Author(s):  
Chiara Benvenuto ◽  
Francesca Gherardi
Keyword(s):  
Population Structure ◽  
Hermit Crab ◽  
Rocky Shores ◽  
Two Populations

Two populations of Clibanarius erythropus from Mediterranean and Atlantic rocky shores were studied to provide data on morphometry, population structure and shell use under different environmental contexts. Hermit crab sex and size were analysed as well as genus, dimension and status of the inhabited shells. A comparison between the two populations gave particular emphasis to the morphological and eco-ethological plasticity of this hermit species.

The Influence of Salinity on Behaviour and Oxygen Uptake of the Hermit Crab Pagurus Bernhardus L.

1980 ◽  
Vol 60 (1) ◽  
pp. 127-134 ◽  
Author(s):  
J. Davenport ◽  
P. M. C. F. Busschots ◽  
D. F. Cawthorne
Keyword(s):  
Oxygen Uptake ◽  
Hermit Crab ◽  
Littoral Zone ◽  
Hermit Crabs ◽  
Rocky Shores ◽  
Terrestrial Runoff ◽  
Salinity Levels ◽  
Pagurus Bernhardus

Hermit crabs, Pagurus bernhardus L., are common inhabitants of the littoral zone where they may be found in pools and puddles on the lower and middle portions of rocky shores. Only small specimens are normally found between the tidemarks but large crabs are found sublittorally as deep as 450 m. Unlike many of the animals found at a similar level on the shore, such as mussels, barnacles and winkles, Pagurus does not penetrate estuaries to any great extent. However, the smaller animals found in the littoral zone are likely to encounter reduced salinity levels caused by rainfall and terrestrial runoff.

scholarly journals Hermit crab (Decapoda, Anomura) attraction to dead gastropod baits in an infralittoral algae bank

2002 ◽  
Vol 45 (2) ◽  
pp. 245-250 ◽  
Author(s):  
Juarez C. B. Pezzuti ◽  
Alexander Turra ◽  
Fosca P. P. Leite
Keyword(s):  
Species Composition ◽  
Physical Condition ◽  
Hermit Crab ◽  
Chemical Cues ◽  
Hermit Crabs ◽  
Specific Response ◽  
Utilization Pattern ◽  
Gastropod Shell ◽  
Three Samples ◽  
Shield Length

Hermit crabs use gastropod shells as shelter and are adapted to follow chemical cues released from tissues of dead or injured gastropods as a way to find new and more adequate shells. The species composition, crab size, shell types adequacy and physical condition were compared between attracted individuals and crabs collected in previous samples. The previous sampling was carried out in five areas before each experiment. Then, five baits of crushed gastropods in nylon net bags were installed in these areas. Three samples were taken at 30min intervals, capturing all crabs within a circle of 60cm diameter. Attraction of hermit crabs was tested for four different gastropod baits to verify specificity of the chemical cues. Clibanarius antillensis, Pagurus brevidactylus and Paguristes tortugae were collected in the study area. Pagurus brevidactylus, the smallest species, turned out to be more attracted than the 2 other species. The results showed that attracted crabs utilized more gastropod shell types than that collected in previous samples, however shell utilization pattern did not differ between them. Attracted animals were slightly smaller (shield length) than those collected in the previous samples but did not present significant differences in shell adequacy and condition. The four experimental baits attracted the crabs in similar ways not indicating a specific response from the crabs. The fact that attracted animals were smaller suggested that the attraction to dead gastropods might enable the acquisition of a new and larger shell and, consequently, chains of shell exchange between the attracted crabs.

Effect of geographic location and sexual dimorphism on shield shape of the Red Sea hermit crab Clibanarius signatus using the geometric morphometric approach

2018 ◽  
Vol 96 (7) ◽  
pp. 667-679 ◽  
Author(s):  
Tarek G. Ismail
Keyword(s):  
Sexual Dimorphism ◽  
Red Sea ◽  
Salt Marshes ◽  
Hermit Crab ◽  
Size Variation ◽  
Procrustes Analysis ◽  
Shell Shape ◽  
Rocky Shores ◽  
Shape Variation ◽  
Geometric Morphometric

The hermit crab Clibanarius signatus Heller, 1861 inhabits varied intertidal habitats of the Red Sea coast, such as rocky shores and mangrove littoral salt marshes. Shield-shape variation among three populations of C. signatus was analyzed with geometric morphometric methods. Shape variation was studied through multivariate analyses using configurations aligned by the generalized Procrustes analysis. Shape variation was explored through principal component analysis. The ordination of the populations and the sexes was investigated using discriminant analysis of canonical variables. Centroid size, as a measure of overall size, was used to estimate size variation among the three populations and the sexes. The results revealed the presence of shield-size variation among the three populations and confirmed the size sexual dimorphism in two populations. Moreover, the analysis revealed the occurrence of two morphotypes based on a covariation between shield shape and shape of occupied shells. The geographic distance was not a good predictor of shield shape. Cross-validation analyses correctly reclassified more than 70% of individuals and 66% of sexes to their correct group. It was suggested that association in shield-shell shape could be the result of the phenotypic plasticity of this species.

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