{{Short description|Species of crustacean}} {{Speciesbox | name = Manning grass shrimp | image = | genus = Thor (crustacean) | species = manningi | authority = Chace, 1972 | display_parents = 3 | synonyms = | synonyms_ref = }}
'''''Thor manningi''''' is a species of shrimp. The common name for this species is the '''Manning grass shrimp'''.<ref>{{Cite web|title=ADW: Thor manningi: CLASSIFICATION|url=https://animaldiversity.org/accounts/Thor_manningi/classification/|access-date=2021-09-05|website=animaldiversity.org}}</ref> On average the life span in this species is 4 to 5 months.<ref>{{Cite book|last1=Schram|first1=Frederick|url=https://books.google.com/books?id=ve0qM3s-XqkC&q=Thor+manningi&pg=PA548|title=Treatise on Zoology - Anatomy, Taxonomy, Biology. The Crustacea, Volume 9 Part A: Eucarida: Euphausiacea, Amphionidacea, and Decapoda (partim)|last2=Klein|first2=Carel von Vaupel|last3=Charmantier-Daures|first3=M.|last4=Forest|first4=J.|date=2010-12-17|publisher=BRILL|isbn=978-90-04-16441-3|pages=180|language=en}}</ref> The species uses drag powered swimming to move from place to place.<ref>{{EOL|46514384|Manning Grass Shrimp ''Thor manningi'' Chace 1972}}</ref>
==Distribution== ''Thor manningi'' has an amphiamerican distribution, found in shallow coastal regions of the Western Atlantic,<ref>{{ITIS|id=96919|taxon=Thor manningi|access-date=1 November 2023}}</ref> including off the coast of South Carolina in the United States,<ref name=NatureServe>{{cite web |title=''Thor manningi'' |url=https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.1286578/Thor_manningi |website=NatureServe Explorer An online encyclopedia of life|version=7.1 |publisher=NatureServe |access-date=1 November 2023}}</ref> and the East Pacific.<ref>{{cite journal|author=Rubén Ríos|author2=Alberto Carvacho|name-list-style=and|title=Caridean Shrimps of the Gulf of California. I. New Records, with Some Remarks on Amphiamerican Distribution|date= January 1982|journal=Pacific Science|volume=36|issue=4 |url=https://www.researchgate.net/publication/29736289_Caridean_Shrimps_of_the_Gulf_of_California_I_New_Records_with_Some_Remarks_on_Amphiamerican_Distribution}}</ref>
==Reproduction== ''Thor manningi'' is a trioecious species with males, females and protandrous hermaphrodites.<ref>{{Cite book|last1=Fusco|first1=Giuseppe|url=https://books.google.com/books?id=AKGsDwAAQBAJ&q=trioecy&pg=PA133|title=The Biology of Reproduction|last2=Minelli|first2=Alessandro|date=2019-10-10|publisher=Cambridge University Press|isbn=978-1-108-49985-9|pages=134–135|language=en}}</ref> Individuals approaching sex change have a mixture of male and female characteristics.<ref>{{Cite book|last=Bauer|first=Raymond T.|url=https://books.google.com/books?id=b8YHIsnod3EC&q=Thor+manningi&pg=PR11|title=Remarkable Shrimps: Adaptations and Natural History of the Carideans|date=2004|publisher=University of Oklahoma Press|isbn=978-0-8061-3555-7|pages=126|language=en}}</ref> In this species 50% of the population are males, 49% protandric hermaphrodites, and 1% are females.<ref>{{Cite book|last=Leonard|first=Janet L.|url=https://books.google.com/books?id=0rWZDwAAQBAJ&q=Thor+manningi&pg=PA291|title=Transitions Between Sexual Systems: Understanding the Mechanisms of, and Pathways Between, Dioecy, Hermaphroditism and Other Sexual Systems|date=2019-05-21|publisher=Springer|isbn=978-3-319-94139-4|pages=283|language=en}}</ref>
== References == {{Reflist}}
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Category:Alpheoidea Category:Crustaceans of Brazil Category:Crustaceans described in 1972
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