Results 1 to 10 of about 14,641,268 (408)

ON THE LIFE-HISTORY OF ASCARIS LUMBRICOIDES [PDF]

open access: greenBMJ, 1916
I. In the following three experiments it will be shown that ripe eggs of Ascaris suilla can hatch in the intestine of the pig, that the larvae issuing from these eggs enter the body of the pig and pursue the same course through the body as in the rat and mouse.
FHC Stewart
openalex   +8 more sources

From Cosmos to Intelligent Life: The Four Ages of Astrobiology [PDF]

open access: yes, 2012
The history of life on Earth and in other potential life-bearing planetary platforms is deeply linked to the history of the universe. Since life as we know it relies on chemical elements forged in dying heavy stars, the universe needs to be old enough for stars to form and evolve. Current cosmological theory indicates that the universe is 13.7$\pm 0.13$
Abel   +17 more
arxiv   +3 more sources

ON THE LIFE-HISTORY OF THE COHO. [PDF]

open access: greenContributions to Canadian Biology and Fisheries, 1915
not available
C. McLean Fraser
openalex   +4 more sources

Life History Strategies of Male Criminal Offenders: Verifying Traditional Life History Patterns [PDF]

open access: yesEvolutionary Psychology
Life history (LH) strategies are results of trade-offs that species must make due to inhabiting certain ecological niches. Although it is assumed that, through the process of developmental plasticity, similar trade-offs are made by individuals in ...
Monika Kwiek, Przemyslaw Piotrowski
doaj   +2 more sources

Abyssal fauna of polymetallic nodule exploration areas, eastern Clarion-Clipperton Zone, central Pacific Ocean: Amphinomidae and Euphrosinidae (Annelida, Amphinomida) [PDF]

open access: yesZooKeys, 2022
This is a contribution in a series of taxonomic publications on benthic fauna of polymetallic nodule fields in the eastern abyssal Clarion-Clipperton Zone (CCZ). The material was collected during environmental surveys targeting exploration contract areas
Lenka Neal   +6 more
doaj   +3 more sources

Stress and life history [PDF]

open access: yesCurrent Biology, 2014
In his book on behavioural endocrinology, Randy Nelson describes 'stress' as a 'notoriously ethereal concept'. Yet, despite this lack of clarity, studies of the consequences of stress across different time scales, life history stages, taxa and levels of biological enquiry form a large part of modern biology and biomedicine.
Pat Monaghan, Karen A. Spencer
openaire   +3 more sources

Size, microhabitat, and loss of larval feeding drive cranial diversification in frogs

open access: yesNature Communications, 2021
The evolution of metamorphic species may be constrained by different ecologies of the larval and adult stages. Here, Bardua et al. show that in frogs, adult ecology is more important than larval ecology for skull evolution, but species that don’t feed as
Carla Bardua   +7 more
doaj   +1 more source

Benthic megafauna of the western Clarion-Clipperton Zone, Pacific Ocean [PDF]

open access: yesZooKeys, 2022
There is a growing interest in the exploitation of deep-sea mineral deposits, particularly on the abyssal seafloor of the central Pacific Clarion-Clipperton Zone (CCZ), which is rich in polymetallic nodules.
Guadalupe Bribiesca-Contreras   +16 more
doaj   +3 more sources

Macroparasite Life Histories [PDF]

open access: yesCurrent Biology, 2011
Parasites and parasitism is common. Worm macroparasites have evolved life-history traits that allow them to successfully transmit between spatially and temporally separated patches of host resource and to survive within these environments. Macroparasites have common life-history strategies to achieve this, but these general themes are modified in a ...
Viney, ME, Cable, J
openaire   +4 more sources

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