scholarly journals Effect of salinity on survival and emigration behaviour during the sea-to-land transition of three terrestrial hermit crab species (Decapoda: Anomura: Coenobitidae) under laboratory conditions

2021 ◽  
Vol 50 (0) ◽  
pp. 131-143
Author(s):  
Toshihiro Watanabe ◽  
Katsuyuki Hamasaki ◽  
Shigeki Dan ◽  
Shuichi Kitada
Keyword(s):  
Hermit Crab ◽  
Crab Species ◽  
Laboratory Conditions

Metopelloides paguri sp. nov., a new species of symbiotic stenothoid amphipod (Crustacea: Amphipoda: Stenothoidae) associated with sublittoral hermit crabs from the Russian coasts of the Sea of Japan

Zootaxa ◽  
2012 ◽  
Vol 3244 (1) ◽  
pp. 59 ◽  
Author(s):  
IVAN MARIN ◽  
SERGEY SINELNIKOV
Keyword(s):  
New Species ◽  
Sea Of Japan ◽  
Hermit Crab ◽  
Hermit Crabs ◽  
The Sea Of Japan ◽  
Crab Species ◽  
Body Coloration ◽  
The Family ◽  
Mandibular Palp ◽  
A New Species

A new species of amphipod from the genus Metopelloides Gurjanova, 1938 (Crustacea: Amphipoda: Stenothoidae) asso-ciated with two species of sublittoral hermit crab species, Pagurus pectinatus (Stimpson, 1858) and Elassochirus cavi-manus (Miers, 1879) (Crustacea: Decapoda: Paguridae), is described from the Russian coasts of the Sea of Japan. The newspecies clearly differs from the congeners by the combination of morphological features such as telson without lateralspines, an elongated mandibular palp with single apical setae, the structures of distoventral palmar margins of subchelaon gnathopods I and II in females, bright white-red body coloration. Thus, the record of Metopelloides paguri sp. nov.represents the second record of the family Stenothoidae in the association with sublittoral hermit crabs from the Sea of Japan.

A new species of Trichopagurus de Saint Laurent (Crustacea: Decapoda: Anomura: Paguridae) from the Ryukyu and Yap Islands, and redescription of T. trichophthalmus (Forest)

Zootaxa ◽  
2005 ◽  
Vol 801 (1) ◽  
pp. 1
Author(s):  
TOMOYUKI KOMAI ◽  
MASAYUKI OSAWA
Keyword(s):  
New Species ◽  
Hermit Crab ◽  
Type Species ◽  
Ventral Surface ◽  
Ryukyu Islands ◽  
Crab Species ◽  
The Ryukyu Islands ◽  
Gill Lamellae ◽  
A New Species

Discovery of a new hermit crab species from the Ryukyu Islands, Japan, led us to reexamine the holotype and supplemental specimens of Trichopagurus trichophthalmus (Forest), the type species of the heretofore monotypic Trichopagurus de Saint Laurent. Our examination has revealed that the gill lamellae of T. trichophthalmus are actually entire (= biserial), rather than shallowly divided distally (= quadriserial) as reported by de Saint Laurent (1970). The new species is assigned to Trichopagurus because of the 11 pairs of biserial gills, well-developed rostrum, moderately long male right sexual tube directed toward exterior, and the possession of a single left gonopore in female. The new species, T. macrochela n. sp., is distinguished from T. trichophthalmus primarily by the dorsoventrally flattened carpus with a distinctly delimited dorsomesial margin, less setose ambulatory legs, and markedly asymmetrical coxae of the female fifth pereopods, of which the left bears numerous setae on the ventral surface. It has been also shown that previous records of T. trichophthalmus from the Palau and Yap Islands are based on both true T. trichophthalmus and T. macrochela. A comparative, updated redescription of T. trichophthalmus is also provided.

A new hermit crab species of the Pagurixus anceps group (Crustacea: Decapoda: Anomura: Paguridae) from southern Japan, and supplemental notes on P. patiae Komai, 2006

Zootaxa ◽  
2007 ◽  
Vol 1627 (1) ◽  
pp. 41-51 ◽  
Author(s):  
MASAYUKI OSAWA ◽  
TOMOYUKI KOMAI
Keyword(s):  
New Species ◽  
Morphological Variation ◽  
Hermit Crab ◽  
Dorsal Surface ◽  
Crab Species ◽  
Okinawa Island ◽  
Southern Japan ◽  
Males And Females ◽  
The Right ◽  
First Time

The pagurid hermit crab genus Pagurixus Melin, 1939, currently includes 24 species in the Indo-West Pacific, and recent studies have revealed the richness of this genus in southern Japan, particularly in coral reefs. In this paper, we deal with two species of the genus, P. dissimilis n. sp. described from southern Japan, and the recently described P. patiae Komai, 2006. The new species appears closest to P. nanus Komai & Takada, 2006 in both morphology and coloration in life, but is distinguished from the latter by having a clearly delimited dorsomesial margin of the dactylus of the right cheliped in males and females, a blunt but distinct median crest and a mesial row of small spines on the dorsal surface of the carpus of the male right cheliped, and paired gonopores in females. The newly obtained specimens of P. patiae from Okinawa Island enable us to describe the coloration in life of the species for the first time and to examine morphological variation. Brief notes on the distribution of the Japanese Pagurixus species are also provided.

Isolation increases time to emerge from shells in two Coenobita hermit crab species

2014 ◽  
Vol 18 (2) ◽  
pp. 221-225 ◽  
Author(s):  
Julia N. Bartmess-LeVasseur ◽  
Todd M. Freeberg
Keyword(s):  
Hermit Crab ◽  
Crab Species

The records of Pagurus trigonocheirus (Stimpson, 1858) (Crustacea: Decapoda: Paguridae) from the continental coasts of the Peter the Great Bay of the Sea of Japan with the list of hermit crab species from the area

Zootaxa ◽  
2020 ◽  
Vol 4869 (2) ◽  
pp. 275-280
Author(s):  
IVAN MARIN
Keyword(s):  
Sea Of Japan ◽  
Hermit Crab ◽  
Peter The Great Bay ◽  
Hermit Crabs ◽  
The Sea Of Japan ◽  
Crab Species ◽  
Exact Sampling ◽  
Peter The Great ◽  
Great Bay

The sublittoral hermit crab Pagurus trigonocheirus (Stimpson, 1858) (Crustacea: Decapoda: Paguridae) is recorded from depths of 80–200 m along the continental coastline of the Peter the Great Bay, Sea of Japan. The exact sampling localities as well as photographs of live specimens are presented in the paper. Doubtful records of hermit crabs from the southern Russian coastline of the Sea of Japan are also discussed. 

Niche overlap and resource partitioning between two intertidal hermit crab species

2017 ◽  
Vol 99 (1) ◽  
pp. 135-142 ◽  
Author(s):  
Guillermina Alcaraz ◽  
Karla Kruesi
Keyword(s):  
Interspecific Competition ◽  
Hermit Crab ◽  
Resource Partitioning ◽  
Chemical Cues ◽  
Limited Resource ◽  
Niche Overlap ◽  
Crab Species ◽  
Gastropod Shell ◽  
In The Wild ◽  
Coexisting Species

The gastropod shell influences important aspects of the hermit crab's life; however, the shells are commonly a limited resource. Therefore, different hermit crab species that coexist in intertidal areas are commonly involved in intraspecific and interspecific competition for shells. We assess if differences in shell preference, exploitation ability, or competition by interference can explain the partitioning of shells between the coexisting species Calcinus californiensis and Clibanarius albidigitus. Clibanarius preferred shells of Nerita funiculata among the six gastropod shells tested, while Calcinus did not establish a hierarchy in shell preference. Therefore, the preference for gastropod shell species does not seem to diminish the competition for shells in the wild. Clibanarius identified and attended to chemical cues signalling potential sites of available shells (chemical cues of dead gastropods); Calcinus did not respond to these cues (competition by exploitation). However, Calcinus was more successful in obtaining a new shell by interspecific shell fighting than Clibanarius. Consequently, the use of better quality shells (intact shells) by Calcinus in the wild can be explained by its greater fighting ability compared with Clibanarius. The bias in shell distributions through dominance by shell fighting, more than by exploitation ability, has also been suggested for other hermit crab species of these genera.

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