horseshoe crab

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Related to Limulus polyphemus: Horseshoe crabs

horseshoe crab

(hŏrs′shoo″, hŏrsh′oo krăb)
Limulus polyphemus, a species of saltwater arthropod that is a member of the Chelicerates, the subphylum containing scorpions and spiders, rather than the Crustaceans, the subphylum containing true crabs. The Limulus body structure has remained nearly unchanged for 450 million years, longer than almost any other living animal. Its blood is blue rather than red because oxygen is carried by a copper-based compound rather than hemoglobin, which is an iron-based compound; Limulus blood is used in testing drugs for bacterial contamination.
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Opsin repertoire and expression patterns in horseshoe crabs: evidence from the genome of Limulus polyphemus (Arthropoda: Chelicerata).
Opsins and Their Expression Patterns in the Xiphosuran Limulus polyphemus
Body size, morphological constraints, and mated pair formation in four populations of horseshoe crabs, Limulus polyphemus along a geographic cline.
Proximate causes of sexual size dimorphism in horseshoe crabs (Limulus polyphemus) of the Delaware Bay
The most comprehensive study was in the horseshoe crab Limulus polyphemus, where peropsin had ubiquitous expression in all three eye types (median, ventral, and lateral) as well as four regions in the nervous system (Battelle et al.
Molecular Evolution of Spider Vision: New Opportunities, Familiar Players
Regional differentiation and sex-based dispersal among populations of horseshoe crabs Limulus polyphemus.
Prosomal-width-to-weight relationships in American horseshoe crabs (Limulus polyphemus): examining conversion factors used to estimate landings
Abundance and population structure of the Atlantic horseshoe crab, Limulus polyphemus, in Pleasant Bay, Cape Cod.
Abundance of adult horseshoe crabs (Limulus polylphemus) in Delaware Bay estimated from a bay-wide mark-recapture study
Limulus polyphemus develops through four embryonic molts and 21 morphological stages before hatching (Sekiguchi, 1988; Shuster and Sekiguchi, 2003).
Low oxygen levels slow embryonic development of limulus polyphemus
Assessments of the population biology and critical habitat for the horseshoe crab, Limulus polyphemus, in the South Atlantic Bight.
Potential causes of mortality for horseshoe crabs (Limulus polyphemus) during the biomedical bleeding process
The American horseshoe crab, Limulus polyphemus, Linnaeus, 1758, is valued for both its ecological and economic importance.
Sublethal behavioral and physiological effects of the biomedical bleeding process on the American horseshoe crab, limulus polyphemus
The horseshoe crab, Limulus polyphemus, fishery and resource in the United States.
Abundance of horseshoe crabs (Limulus polyphemus) in the Delaware Bay area
Another common species that inhabits or visits the intertidal zone is the American horseshoe crab, Limulus polyphemus (Linnaeus).
Patterns of activity expressed by juvenile horseshoe crabs
Adult American horseshoe crabs, Limulus polyphemus, migrate into the intertidal zone along the eastern coast of North America in the late spring-early summer to attempt to mate (Rudloe, 1979; Brockmann, 2003).
Rhythms of locomotion expressed by Limulus polyphemus, the American horseshoe crab: I. Synchronization by artificial tides
The brain of the American horseshoe crab, Limulus polyphemus, contains a circadian clock that modulates the sensitivity of the lateral eyes (reviewed in Barlow, 1983).
Rhythms of locomotion expressed by Limulus polyphemus, the American horseshoe crab: II. Relationship to circadian rhythms of visual sensitivity

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