Body Mass Overlap and Interspecific Interference Competition among Desert Gerbils?

Yom‐Tov, Yoram; Dayan, Tamar

doi:10.2307/3545896

Cited by 6 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Body size is commonly associated with an animal's abilities in interference competition, with larger individuals usually having the upper hand (see Discussion in Yom‐Tov & Dayan 1996). Therefore, increased body size in sympatry with a competitor might also evolve in response to ‘alpha selection,’ through interference competition (Jaeger et al.…”

Section: Alternative Selective Forcesmentioning

confidence: 99%

Ecological and community‐wide character displacement: the next generation

Dayan¹,

Simberloff²

2005

Ecology Letters

Self Cite

515

494

View full text Add to dashboard Cite

Ecological character displacement, mostly seen as increased differences of size in sympatry between closely-related or similar species, is a focal hypothesis assuming that species too similar to one another could not coexist without diverging, owing to interspecific competition. Thus, ecological character displacement and community-wide character displacement (overdispersion in size of potential competitors within ecological guilds) were at the heart of the debate regarding the role of competition in structuring ecological communities. The debate has focused on the evidence presented in earlier studies and generated a new generation of rigorous, critical studies of communities. Character displacement research in the past two decades provides sound statistical support for the hypothesis in a wide variety of taxa, albeit with a phylogenetically skewed representation. A growing number of studies are strongly based in functional morphology, and some also demonstrate actual morphologically related resource partitioning. Phylogenetic models and experimental work have added to the scope and depth of earlier research, as have theoretical studies. However, many challenging ecological and evolutionary issues, regarding both selective forces (at the inter-and intraspecific level) and resultant patterns, remain to be addressed. Ecological character displacement and community-wide character displacement are here to stay as the focus of much exciting research.

show abstract

Section: Alternative Selective Forcesmentioning

confidence: 99%

Ecological and community‐wide character displacement: the next generation

Dayan¹,

Simberloff²

2005

Ecology Letters

Self Cite

515

494

View full text Add to dashboard Cite

show abstract

“…The most abundant species were gerbils-Gerbillus allenbyi, G. pyramidum, and G. gerbillus (some of which may belong to G. dasyurus, whose mandibles are indistinguishable from those of G. gerbillus)-followed by the common shrew Crocidura suaveolens and the jirds Meriones crassus and M. sacramenti. All species found were known to occur in or near the area (Yom-Tov, 1988;Werner, 1988;Mendelssohn and Yom-Tov, 1999;Yom-Tov and Dayan, 1996). Most rodents found in the assemblage are psammophiles or live in areas of loess soil, but the black-tailed dormouse (Eliomys melanurus) is not, and occurs in the Negev mainly in rocky habitats.…”

mentioning

confidence: 99%

The Diet of the Barn Owl Tyto Alba in the Negev Desert

Tores¹,

Yom‐Tov

2003

Israel Journal of Zoology

Self Cite

View full text Add to dashboard Cite

“…minutus ) (e.g. 35 , 49 , 50 ). However, reduction in body size might benefit the species experiencing it as such morphological change might enable its permanence at sites with high-quality microhabitat characteristics despite the presence of a bigger competitor.…”

Section: Discussionmentioning

confidence: 99%

Can Niche Modeling and Geometric Morphometrics Document Competitive Exclusion in a Pair of Subterranean Rodents (Genus Ctenomys) with Tiny Parapatric Distributions?

Kubiak

Gutiérrez

Galiano³

et al. 2017

Sci Rep

View full text Add to dashboard Cite

Species with similar ecological requirements coexisting in the same geographic region are prone to competitively exclude each other. Alternatively, they may coexist if character displacement acts to change the niche requirements of one or both species. We used two methodological approaches (ecological niche modeling [ENM] and geometric morphometrics) to test two hypotheses: given their behavioral, morphological, and ecological similarities, one species competitively excludes the other; and, character displacement enables their coexistence at two sites in which the species are known to occur in sympatry. The results from the ENM-based approach did not provide evidence for competitive exclusion; however, the morphometric analyses documented displacement in size of C. minutus. This result, suggests that C. minutus might exclude C. flamarioni from areas with softer soils and higher food availability. We stress the importance of using multiple methodological approaches when testing prediction of competitive exclusion. However, both methods had limited explanatory power given that the focal species possess truly peculiar distributions, being largely parapatric and restricted to narrow, small geographic areas with a strange distribution and there is a need to search for additional methods. We discuss the idiosyncrasy of the ENM-based approach when applied to organisms with subterranean habits.

show abstract

Body Mass Overlap and Interspecific Interference Competition among Desert Gerbils?

Cited by 6 publications

References 15 publications

Ecological and community‐wide character displacement: the next generation

Ecological and community‐wide character displacement: the next generation

The Diet of the Barn Owl Tyto Alba in the Negev Desert

Can Niche Modeling and Geometric Morphometrics Document Competitive Exclusion in a Pair of Subterranean Rodents (Genus Ctenomys) with Tiny Parapatric Distributions?

Contact Info

Product

Resources

About