Trophic ecology of the North American crayfish genus Barbicambarus Hobbs, 1969 (Decapoda: Astacoidea: Cambaridae): evidence for a unique relationship between body size and trophic position
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چکیده
منابع مشابه
Is the Relationship between Body Size and Trophic Niche Position Time-Invariant in a Predatory Fish? First Stable Isotope Evidence
Characterizing relationships between individual body size and trophic niche position is essential for understanding how population and food-web dynamics are mediated by size-dependent trophic interactions. However, whether (and how) intraspecific size-trophic relationships (i.e., trophic ontogeny pattern at the population level) vary with time remains poorly understood. Using archival specimens...
متن کاملthe investigation of the relationship between type a and type b personalities and quality of translation
چکیده ندارد.
Body size is negatively correlated with trophic position among cyprinids
Body size has many ecological and evolutionary implications that extend across multiple levels of organization. Body size is often positively correlated with species traits such as metabolism, prey size and trophic position (TP) due to physiological and mechanical constraints. We used stable isotope analysis to quantify TP among minnows across multiple assemblages that differed in their species...
متن کاملTesting Phylogenetic Hypotheses of the Subgenera of the Freshwater Crayfish Genus Cambarus (Decapoda: Cambaridae)
BACKGROUND The genus Cambarus is one of three most species rich crayfish genera in the Northern Hemisphere. The genus has its center of diversity in the Southern Appalachians of the United States and has been divided into 12 subgenera. Using Cambarus we test the correspondence of subgeneric designations based on morphology used in traditional crayfish taxonomy to the underlying evolutionary his...
متن کاملThe body size dependence of trophic cascades.
Trophic cascades are indirect positive effects of predators on resources via control of intermediate consumers. Larger-bodied predators appear to induce stronger trophic cascades (a greater rebound of resource density toward carrying capacity), but how this happens is unknown because we lack a clear depiction of how the strength of trophic cascades is determined. Using consumer resource models,...
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ژورنال
عنوان ژورنال: Journal of Crustacean Biology
سال: 2017
ISSN: 0278-0372,1937-240X
DOI: 10.1093/jcbiol/rux019