Tadpole bullies: examining mechanisms of competition in a community of larval anurans

1998 ◽  
Vol 76 (1) ◽  
pp. 144-153 ◽  
Author(s):  
Sarah Grimké Faragher ◽  
Robert G Jaeger
Keyword(s):  
Laboratory Experiments ◽  
Feeding Rate ◽  
Interspecific Interactions ◽  
Interference Competition ◽  
Leopard Frog ◽  
Hyla Cinerea ◽  
Chemical Interference ◽  
Larval Anurans ◽  
Green Treefrog ◽  
Rana Utricularia

We examined interference competition during interspecific interactions of larval anurans to determine its importance. We conducted laboratory experiments to examine behavioral and chemical interference competition between tadpoles of the southern leopard frog (Rana utricularia) and those of the green treefrog (Hyla cinerea). Water preconditioned byR. utricularia tadpoles significantly decreased the growth and increased the mortality of H. cinerea tadpoles compared with control treatments. In addition, R. utricularia tadpoles inhibited the feeding rate ofH. cinerea tadpolesby harassing them, and these interactions significantly decreased the growth and increased the mortality of theH. cinerea tadpoles. Rana utricularia tadpoles apparently use both chemical interference and aggressive behavior in securing a competitive advantage over H. cinerea tadpoles, and the H. cinerea tadpoles suffer from these interactions. Intraspecific chemical and behavioral interference competition also significantly decreased the growth of larval H. cinerea. In natural ponds, R. utricularia tadpoles that inhibit the growth and increase the mortality of H. cinerea tadpoles may increase their own chances of survival and metamorphosis, while H. cinerea tadpoles that avoid interactions with conspecifics and with R. utricularia tadpoles may increase their own chances of survival and metamorphosis.

scholarly journals Mechanisms Involved in Interspecific Communication between Wine Yeasts

Foods ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1734
Author(s):  
Ana Mencher ◽  
Pilar Morales ◽  
Jordi Tronchoni ◽  
Ramon Gonzalez
Keyword(s):  
Alcoholic Fermentation ◽  
Yeast Species ◽  
Interspecific Interactions ◽  
Interference Competition ◽  
Weighted Average ◽  
Starter Cultures ◽  
Simple Consequence ◽  
Wine Yeasts ◽  
Exploitation Competition ◽  
Metabolic Intermediates

In parallel with the development of non-Saccharomyces starter cultures in oenology, a growing interest has developed around the interactions between the microorganisms involved in the transformation of grape must into wine. Nowadays, it is widely accepted that the outcome of a fermentation process involving two or more inoculated yeast species will be different from the weighted average of the corresponding individual cultures. Interspecific interactions between wine yeasts take place on several levels, including interference competition, exploitation competition, exchange of metabolic intermediates, and others. Some interactions could be a simple consequence of each yeast running its own metabolic programme in a context where metabolic intermediates and end products from other yeasts are present. However, there are clear indications, in some cases, of specific recognition between interacting yeasts. In this article we discuss the mechanisms that may be involved in the communication between wine yeasts during alcoholic fermentation.

Foraging behaviour in East Asian desert rodents and its implications on coexistence

2016 ◽  
Vol 62 (3-4) ◽  
pp. 171-177 ◽  
Author(s):  
Ling-Ying Shuai ◽  
Yan-Ling Song ◽  
Burt P. Kotler ◽  
Keren Embar ◽  
Zhi-Gao Zeng
Keyword(s):  
Foraging Behaviour ◽  
Species Coexistence ◽  
Interspecific Interactions ◽  
Interference Competition ◽  
Foraging Efficiency ◽  
Gobi Desert ◽  
Patch Use ◽  
Desert Rodents ◽  
Daily Scale

We studied the foraging behaviour of two sympatric rodents (Meriones meridianus and Dipus sagitta) in the Gobi Desert, Northwestern China. The role of the foraging behaviour in promoting species coexistence was also examined. We used giving-up densities (GUDs) in artificial food patches to measure the patch use of rodents and video trapping to directly record the foraging behaviour, vigilance, and interspecific interactions. Three potential mechanisms of coexistence were evaluated (1) microhabitat partitioning; (2) spatial heterogeneity of resource abundance with a tradeoff in foraging efficiency vs. locomotion; and (3) temporal partitioning on a daily scale. Compared to M. meridianus, D. sagitta generally possessed lower GUDs, spent more time on patches, and conducted more visits per tray per capita, regardless of microhabitat. However, M. meridianus possessed advantages in average harvesting rates and direct interference against D. sagitta. Our results only partly support the third mechanism listed above. We propose another potential mechanism of coexistence: a tradeoff between interference competition and safety, with M. meridianus better at interference competition and D. sagitta better at avoiding predation risk. This mechanism is uncommon in previously studied desert rodent systems.

Perception of complex sounds by the green treefrog, Hyla cinerea: envelope and fine-structure cues

1993 ◽  
Vol 173 (3) ◽  
pp. 321-327 ◽  
Author(s):  
A.M. Simmons ◽  
R.C. Buxbaum ◽  
M.P. Mirin
Keyword(s):  
Fine Structure ◽  
Hyla Cinerea ◽  
Complex Sounds ◽  
Green Treefrog

Chemical interference competition by Monomorium minimum (Hymenoptera: Formicidae)

Oecologia ◽  
1981 ◽  
Vol 51 (2) ◽  
pp. 265-270 ◽  
Author(s):  
Eldridge S. Adams ◽  
James F. A. Traniello
Keyword(s):  
Interference Competition ◽  
Chemical Interference

Hyla cinerea (Schneider) (Green treefrog) 2n = 24

1973 ◽  
pp. 37-39
Author(s):  
Maria Luiza Beçak ◽  
Willy Beçak ◽  
Franklin L. Roberts ◽  
Robert N. Shoffner ◽  
E. Peter Volpe
Keyword(s):  
Hyla Cinerea ◽  
Green Treefrog

Evolutionary and neurobiological implications of selective phonotaxis in the green treefrog, Hyla cinerea

1987 ◽  
Vol 35 (5) ◽  
pp. 1479-1489 ◽  
Author(s):  
H. Carl Gerhardt
Keyword(s):  
Hyla Cinerea ◽  
Green Treefrog ◽  
Selective Phonotaxis

Accuracy of phonotaxis by the green treefrog (Hyla cinerea)

1979 ◽  
Vol 133 (4) ◽  
pp. 247-255 ◽  
Author(s):  
J�rgen Rheinlaender ◽  
H. Carl Gerhardt ◽  
David D. Yager ◽  
Robert R. Capranica
Keyword(s):  
Hyla Cinerea ◽  
Green Treefrog
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