Results 71 to 80 of about 3,946 (178)

Hamilton's rule predicts sibling cannibalism in a wild population of insects

Animal Behaviour
Despite its seminal status in evolutionary biology, empirical studies that fully assess the different components of Hamilton's rule in natural systems remain limited. This is in part due to the difficulty of quantifying the costs and benefits to the actor and recipient of a given behaviour, compared with the relative ease of quantifying relatedness ...
Madingley M. Abbs, Joanna R. Kennedy, Ana Drago, David M. Shuker   +3 more
openaire   +2 more sources

The role of developmental plasticity in eco‐phenotypic population dynamics

Functional Ecology, Volume 39, Issue 11, Page 2985-2998, November 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Individual variation in development can strongly impact population density via its impact on demography. When this variation in development is caused by developmental plasticity, the resulting effects on population density are characterised as ‘eco‐phenotypic dynamics ...
Lukas H. A. Edwards, Isabel M. Smallegange   +1 more
wiley   +1 more source

Non‐native prey availability and over‐compensatory density dependence drive population dynamics of a native fish predator

Ecological Applications, Volume 35, Issue 7, October 2025.
Abstract Understanding the factors that regulate population dynamics is crucial for conserving imperiled species. Bull trout (Salvelinus confluentus), a piscivorous salmonid and one of North America's most threatened cold‐water species, has declined significantly due to habitat loss, overfishing, invasive species, and climate change.
Madaline M. Cochrane, Timothy J. Cline, Travis S. Schmidt, James L. Dunnigan, Will G. Warnock, Clint C. Muhlfeld   +5 more
wiley   +1 more source

Environmental tolerance [PDF]

, 1987
A theory for the expression of a population's response to density-independent gradients of environmental factors is derived for the case of asexuality. It is shown that the environmental tolerance of a genotype is a function of at least four parameters ...
Gabriel, Wilfried, Lynch, Michael
core   +1 more source

Artificial Selection of Early Emerging Helpers in the Cooperatively Breeding Ambrosia Beetle Xyleborinus saxesenii and Its Effects on Various Life History Traits and Their Fungal Symbionts

Ecology and Evolution, Volume 15, Issue 10, October 2025.
In cooperative breeding societies, temporary groups of mature offspring are formed that assist in the rearing of additional brood before the offspring disperse and reproduce independently. It is hypothesized that the delayed dispersal period of helpers will determine the number of siblings that can be reared, thus resulting in an indirect fitness gain.
Antoine Melet, Peter H. W. Biedermann
wiley   +1 more source

Effect of Three Diets on Growth and Survival Rates of African Catfish Heterobranchus bidorsalis Larvae [PDF]

, 2011
Investigations are underway in the Centre de Recherches Océanologiques d’Abidjan (Côte d’Ivoire) to find whether the catfish (Heterobranchus bidorsalis) could be an interesting aquaculture species.
Alla, Yao Laurent, Célestin, Atse Boua, Célestin, Ble Melecony, Tidiani, Kone   +3 more
core  

Honest signalling in predator–prey interactions: Testing the resource allocation hypothesis

Functional Ecology, Volume 39, Issue 10, Page 2833-2848, October 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Warning signals are honest if they reliably deliver information about prey unprofitability to predators. One potential mechanism that may create and maintain a positive relationship between the strength of signals and defence is the resource allocation between these ...
Emily Burdfield‐Steel, Cristina Ottocento, Miriam Furlanetto, Bibiana Rojas, Ossi Nokelainen, Johanna Mappes   +5 more
wiley   +1 more source

Essais d'adaptation de production massive de juvéniles de Clarias gariepinus en conditions rurales [PDF]

, 2005
Adaptive Trials for Intensive Clarias gariepinus fingerling to Rural Conditions. Artificial reproduction and fingerling production of the African catfish Clarias gariepinus (Burchell 1822) have been tested under less controlled conditions to adapt the ...
Ducarme, C., Micha, JC., Rukera Tabaro, S.   +2 more
core  

Reproduction in risky environments: the role of invasive egg predators in ladybird laying strategies [PDF]

, 2016
This is the final version of the article. Available from PLOS via the DOI in this record.We have made the data for this publication freely available from the University of Exeter Repository: URL http://hdl.handle.net/10871/18252.Reproductive environments
Blount, JD, Paul, SC, Pell, JK
core   +1 more source

Biofilms in lab and nature: a molecular geneticist’s voyage to microbial ecology [PDF]

, 2010
This article reviews the latest findings on how extracellular signaling controls cell fate determination during the process of biofilm formation by Bacillus subtilis in the artificial setting of the laboratory. To complement molecular genetic approaches,
Roberto Kolter
core   +2 more sources