Results 51 to 60 of about 7,103,771 (354)

Monte Carlo Simulation of Age-Dependent Host-Parasite Relations

, 2007
The death of a biological population is an extreme event which we investigate here for a host-parasitoid system. Our simulations using the Penna ageing model show how biological evolution can ``teach'' the parasitoids to avoid extinction by waiting for ...
Ana Proykova, Dietrich Stauffer, Karl-Heinz Lampe, Lampe, Malarz, Moss de Oliveira, Pal, Stauffer   +7 more
core   +2 more sources

The biological origin of linguistic diversity [PDF]

, 2012
In contrast with animal communication systems, diversity is characteristic of almost every aspect of human language. Languages variously employ tones, clicks, or manual signs to signal differences in meaning; some languages lack the noun-verb distinction
A Beja-Pereira, Andrea Baronchelli, D Gil, FC Dyer, K Smith, LL Cavalli-Sforza, M Dunn, MA Nowak, MB Miller, MH Christiansen, Morten H. Christiansen, N Chater, N Evans, Nick Chater, NL Komarova, PJ Richerson, R Boyd, R Jackendoff, RD Gray, Ricard V. Solé, RM Seyfarth, Romualdo Pastor-Satorras, RT Hanlon, S Dehaene, S Pinker, S Számadó, SA Tishkoff, SC Levinson, TL Griffiths   +28 more
core   +6 more sources

Monogamy removes constraints on reproductive tissue investment imposed by intense sexual selection

Scientific Reports
A key factor influencing the reproductive success and fitness of an individual is the allocation of resources to reproductive tissue. Previous research has documented positive influences of sexual selection on the evolution of male traits such as testes ...
Abril Alexander, Maider Iglesias-Carrasco, Miguel Lozano, Francisco Garcia-Gonzalez   +3 more
doaj   +1 more source

Ancient and Current Chaos Theories [PDF]

Interdisciplinary Description of Complex Systems, 2006
Chaos theories developed in the last three decades have made very important contributions to our understanding of dynamical systems and natural phenomena. The meaning of chaos in the current theories and in the past is somewhat different from each other.
Güngör Gündüz
doaj  

Origin of Life: The Point of No Return

Life, 2020
Origin of life research is one of the greatest scientific frontiers of mankind. Many hypotheses have been proposed to explain how life began. Although different hypotheses emphasize different initial phenomena, all of them agree around one important ...
Dimiter Kunnev
doaj   +1 more source

The influence of immune challenges on the mean and variance in reproductive investment: a meta-analysis of the terminal investment hypothesis

BMC Biology, 2023
Finding the optimal balance between survival and reproduction is a central puzzle in life-history theory. The terminal investment hypothesis predicts that when individuals encounter a survival threat that compromises future reproductive potential, they ...
Yong Zhi Foo, Malgorzata Lagisz, Rose E. O’Dea, Shinichi Nakagawa   +3 more
doaj   +1 more source

Prognostic Impact of Treatment Modalities, Including Targeted Compartmental Radio‐Immunotherapy, in a Cohort of Neuroblastoma Patients With CNS Metastases at Relapse

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Neuroblastoma (NB) with central nervous system (CNS) metastases is rare at diagnosis, but occurs more often during relapse/progression. Patients with CNS metastases face a dismal prognosis, with no standardized curative treatment available.
Vicente Santa‐Maria Lopez, Anna Felip‐Badia, Marina Caballero‐Bellon, Nazaret Sanchez‐Sierra, Alicia Castañeda, Moira Garraus, Maite Gorostegui, Margarida Simão‐Rafael, Juan Pablo Muñoz, Marta Perez‐Somarriba, Salvador Mañe, Mariana Cecilia Planells, Sara Perez‐Jaume, Jaume Mora   +13 more
wiley   +1 more source

Sole-Manrubia model of biological evolution: some new insights

, 2002
The Sole-Manrubia model of ``macro''-evolution describes the origination, evolution and extinction of species on geological time scales. We report some properties of this model which provide deep insight into this simple model which captures several ...
Chowdhury, Debashish, Stauffer, Dietrich
core   +1 more source

Correlates of early reproduction and apparent fitness consequences in male Soay sheep

Ecology and Evolution, 2023
Life history trade‐offs are ubiquitous across species and place constraints on the timing of life history events, including the optimal age at first reproduction.
Elisabeth G. Chapman, Jill G. Pilkington, Josephine M. Pemberton   +2 more
doaj   +1 more source

The Target Selects the Toxin: Specific Amino Acids in Snake-Prey Nicotinic Acetylcholine Receptors That Are Selectively Bound by King Cobra Venoms

Toxins, 2022
Snake venom is an adaptive ecological trait that has evolved primarily as a form of prey subjugation. Thus, the selection pressure for toxin diversification is exerted by the prey’s physiological targets, with this pressure being particularly acute for ...
Uthpala Chandrasekara, Richard J. Harris, Bryan G. Fry   +2 more
doaj   +1 more source