| 词条 | Leptodiaptomus ashlandi |
| 释义 |
Leptodiaptomus ashlandi is a calanoid copepod zooplankton native to the Laurentian Great Lakes and its basin. {{Italic title}}{{Taxobox| image = Leptodiaptomus_ashlandi.jpg | image_caption = Female and male L. ashlandi | name = Leptodiaptomus ashlandi | regnum = Animalia | phylum = Arthropoda | subphylum = Crustacea | classis = Maxillopoda | subclassis = Copepoda | ordo = Calanoida | familia = Diaptomididae | genus = Leptodiaptomus | genus_authority = Marsh, 1893 | species = L. ashlandi | species_authority = Marsh, 1893 }} DistributionLeptodiaptomus ashlandi is a zooplankton species widely distributed across Canada and the northern half of the United States in large deep lakes. It occurs in all the Great Lakes.[1]Identification{{Technical|date=July 2014}}Adult females of L. ashlandi can be distinguished by their two-segmented urosome and asymmetrical, rounded metasomal wings. Males are characterized by a large lateral spine on leg 5, located in the proximal third of the terminal segment, and by the presence of a slender process on the third segment from the distal end of the right antennule.[2] This species is morphologically similar to other Leptodiaptomids (Leptodiaptomus minutus, L. sicilis,) and Skistodiaptomids (Skistodiaptomus oregonensis).References1. ^Mary D. Balcer, Nancy L. Korda & Stanley I. Dodson (1984). "Life history and ecology of the major crustacean species". Zooplankton of the Great Lakes: a guide to the identification and ecology of the common crustacean species. University of Wisconsin Press. pp. 49–109. {{ISBN|978-0-299-09820-9}}. {{Taxonbar|from=Q7675596}}2. ^Hudson, Patrick L., and Lynn T. Lesko. 2003. Free-living and Parasitic Copepods of the Laurentian Great Lakes: Keys and Details on Individual Species. Ann Arbor, MI: Great Lakes Science Center Home Page. http://www.glsc.usgs.gov/greatlakescopepods/MainMenu.php? 1 : Calanoida |
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