Guild Composition and Mustelid Morphology: Character Displacement but No Character Release

Aim Competition is hypothesized to lead to the evolution of reduced morphological overlap between competitors. Within guilds, this is believed to lead to overdispersed size ratios of the trophic apparatus of adjacent-sized species. In allopatry, conditions are believed to favour character release. W... Ausführliche Beschreibung

1. Person: Meiri, Shai
Weitere Personen: Dayan, Tamar verfasserin; Simberloff, Daniel verfasserin
Quelle: in Journal of biogeography Vol. 34, No. 12 (2007), p. 2148-2158
Weitere Artikel
Format: Online-Artikel
Sprache: English
Veröffentlicht: 2007
Beschreibung: Online-Ressource
Schlagworte: research-article
Body Size
Canines
Competition
Condylo-Basal Length
Guilds
Islands
Mustelidae
Online Zugang: Volltext
Volltext
Tags: Hinzufügen
Keine Tags. Fügen Sie den ersten Tag hinzu!
Anmerkung: Copyright: Copyright 2007 Blackwell Publishing Ltd.
LEADER 02887nma a2200373 c 4500
001 JST113643489
003 DE-601
005 20180605200452.0
007 cr uuu---uuuuu
008 180605s2007 000 0 eng d
024 8 |a 4640679 
035 |a 4640679 
040 |b ger  |c GBVCP 
041 0 |a eng 
100 1 |a Meiri, Shai 
245 1 0 |a Guild Composition and Mustelid Morphology: Character Displacement but No Character Release  |h Elektronische Ressource 
300 |a Online-Ressource 
500 |a Copyright: Copyright 2007 Blackwell Publishing Ltd. 
520 |a Aim Competition is hypothesized to lead to the evolution of reduced morphological overlap between competitors. Within guilds, this is believed to lead to overdispersed size ratios of the trophic apparatus of adjacent-sized species. In allopatry, conditions are believed to favour character release. We examined whether character displacement is prevalent in mainland musteline guilds and sought evidence for character release in adjacent island guilds. Location Holarctic, from Japan through western Europe to Pacific North America. Methods We measured skulls and canines of members of the mustelid subfamily Mustelinae and examined whether size ratios tend towards equality. We then examined whether insular guilds are characterized by larger size ratios and a higher degree of sexual size dimorphism than mainland guilds, and whether this reflects evolution towards the size of missing guild members. Results We found equal ratios between skull lengths but not canine diameters in all mainland guilds. Few insular guilds showed equal ratios for either trait. There was scant evidence for character release: insular mustelines do not evolve towards the size of a missing guild member, nor is sexual size dimorphism greater on islands. There was no evidence for a lower limit on the size similarity of co-existing mustelids. Main conclusions We propose that different guild compositions in different localities produce different evolutionary trajectories. Similar sizes on islands and mainlands can be explained by similar prey sizes in both settings. Morphological evidence suggests that competition is probably not a ubiquitous force in the assembly and evolution of musteline guilds. 
653 |a research-article 
653 |a Body Size 
653 |a Canines 
653 |a Competition 
653 |a Condylo-Basal Length 
653 |a Guilds 
653 |a Islands 
653 |a Mustelidae 
700 1 |a Dayan, Tamar  |e verfasserin  |4 aut 
700 1 |a Simberloff, Daniel  |e verfasserin  |4 aut 
773 0 8 |i in  |t Journal of biogeography  |d Oxford [u.a.] : Wiley-Blackwell  |g Vol. 34, No. 12 (2007), p. 2148-2158  |q 34:12<2148-2158  |w (DE-601)JST045195129  |x 1365-2699 
856 4 1 |u http://dx.doi.org/10.1111/j.1365-2699.2007.01771.x  |3 Volltext 
912 |a GBV_JSTOR 
951 |a AR 
952 |d 34  |j 2007  |e 12  |h 2148-2158 

Ähnliche Einträge

Keine ähnlichen Titel gefunden

Privacy Notice Ask a Librarian New Acquisitions