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Synalpheus regalis is a species of snapping shrimp that commonly live in sponges in the coral reefs along the tropical West Atlantic.[3][4] They form a prominent component of the diverse marine cryptofauna of the region.[3] For the span of their entire lives, they live in the internal canals of the host sponge, using it as a food resource and shelter.[4] It has been shown that colonies contain over 300 individuals, but only one reproductive female.[5] Also, larger colony members, most of which apparently never breed, defend the colony against heterospecific intruders.[5] This evidence points towards the first known case of eusociality in a marine animal.
The species name "regalis" comes from the Latin regalis which means royal.[3] This likely stems from the structural hierarchy of the colonies in which only a single female produces all of the offspring.
^Sammy De Grave (2012). "Synalpheus regalis Duffy, 1996". WoRMS. World Register of Marine Species. Retrieved October 10, 2012.
^Arthur Anker & Sammy De Grave (2008). "Zuzalpheus Ríos and Duffy, 2007: a junior synonym of Synalpheus Bate, 1888 (Decapoda: Alpheidae)" (PDF). Journal of Crustacean Biology. 28 (4): 735–740. doi:10.1651/07-2969.1.
^ abcCite error: The named reference autogenerated564 was invoked but never defined (see the help page).
^ abEsra Deniz Gumuser. "A marine dwelling eusocial organism: Synalpheus regalis". Connexions. Retrieved 9 October 2012.
^ abJ. Emmett Duffy (1996). "Eusociality in a coral-reef shrimp" (PDF). Nature. 381 (6582): 512–514. Bibcode:1996Natur.381..512D. doi:10.1038/381512a0. S2CID 33166806.
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S. regalis is one of at least seven recognized species of eusocial shrimp. The other six are Synalpheus brooksi, Synalpheus chacei, Synalpheus elizabethae...
within the genus Synalpheus. Over 160 species are recognised in the genus Synalpheus. For a complete listing, see List of Synalpheus species. In the narrower...
naked mole-rat and the Damaraland mole-rat. Some shrimps, such as Synalpheusregalis, are eusocial. E. O. Wilson and others have made the claim that humans...
habitats. Eusocial behavior has been discovered in the genus Synalpheus. The species Synalpheusregalis lives inside sponges in colonies that can number over...
care for young, according to their relatedness. The social shrimp Synalpheusregalis protects juveniles within highly related colonies. Charles Darwin...
among some crustaceans that live in groups in a restricted area. Synalpheusregalis are snapping shrimp that rely on fortress defense. They live in groups...
shared genes include the gene(s) predisposing to the alarm call. Synalpheusregalis, a eusocial shrimp, is an organism whose social traits meet the inclusive...
inside the territory. Such behaviors are seen in the snapping shrimp Synalpheusregalis and gall-forming aphid Pemphigus spyrothecae. A third ecological factor...
Shrimps of the genus Synalpheus form colonies in sponges, and each shrimp species inhabits a different sponge species, making Synalpheus one of the most diverse...
bees, and wasps, termites, naked mole-rat, Damaraland mole-rat, Synalpheusregalis shrimp, certain beetles, some gall thrips and some aphids. Oxygenate...
beetles, gall-dwelling aphids, thrips, marine sponge-dwelling shrimp (Synalpheusregalis), naked mole-rats (Heterocephalus glaber), and many genera in the...
ramosus – ramosa – ramulosus regalis L royal Synalpheusregalis; regal moth, Citheronia regalis; royal lily, Lilium regale regalis – regale repandus L repandus...
care for young, according to their relatedness. The social shrimp Synalpheusregalis protects juveniles within highly related colonies. Therefore, the...
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