English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

-The shell use pattern between sexes of Pα.gurus βlholi w a s described, at Kattoshi, northern Japan. Line transect sampling showed that the she11s available to P. βlholi in this area were mainly composed of four species, Reticunαssαfrαterculus, H o mαlopomα sαn gαrense, Bαtillαria cumingi a n d Littorina brevicula. T h e former three shell species were used b y small crabs, and the pattern of shell use significantly differed between sexes. A l most a11 large crabs of either sex used Littorinα brevicula shell. The abundance of empty shells w a s about 1 0 % of total hermit abundance. Shell size suitability of crabs decreased as crab size increased, suggesting that shelllimitation was more se・ vere in large-sized crabs than in small ones. However, this trend differed between sexes. Males used unsuitable-sized shell relative to similar-sized females in Reticunαssαa n d H o mαlopomαspecies. The population sex ratio w a s biased towards females, and showed a n anomalous pattern as a function of crab size that w a s initia11y from male bias to female bias with increasing size, but w a s biased towards males again with a further increase in size. Sexual differences in shell preference, competitive ability and growth rate were discussed as causal explanations for the present pattern.

Sexual difference in shell use in the hermit crab Pagurus filholi (de Man) from northern Japan