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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

1 examined the effects of food availablllty, shell availability and the presence of adults on survlval and duration of the megalopal stage of the lntertldal h e r m ~ t crabs Pagurus maclaughlinae Garcla-Gomez, Paguristes tortugae Schmitt and Cllhananus vlttatus (Bosc) In the laboratory. I also cons~dei-ed the role of substrate avdilability on C. vlttatus. All species delayed metamorphosis significantly in the absence of empty shells; shells also enhanced megalopal survival In P, maclaughlinae and C. vittatus. Water that had previously housed conspeclflc adults significantly improved megalopal survival and shortened time to metamorphosis in P. maclauglilinae and P. tortugae. Shell-less megalopae of C. vittatus delayed metamorphosis when kept in adult-conditioned water, but metamorphosed more quickly in the presence of sediment. Food availability did not affect the duration of the megalopal stage in P. maclaughlinae or P. tortugae, whereas starved C. vittatus megalopae died in 8 d or less. Although food availability was associated with somewhat enhanced survival in P. tortugae, the mechanism underlying this effect is unknown, since P. tortugae was not observed to feed a s either megalopae or zoeae. As in other species of Pagt~rus, megalopae of P. tnaclaughlinae were not observed to feed, whereas zoeae and juveniles did feed. The differences and similarities in the nature and extent of the delay capabilities of P. maclaughlinae, P. tortugae and C. vittatus appear to reflect the interaction among various aspects of the ecology of the adults and energetic constraints on the megalopae. KEY \lVORDS Hermit crabs . Metamorphosis Settlement Gregariousness

Delayed metamorphosis in Florida hermit crabs: multiple cues and constraints (Crustacea: Decapoda: Paguridae and Diogenidae)