Results 91 to 100 of about 189,936 (327)

T. rex cognition was T. rex‐like—A critical outlook on diverging views of the neurocognitive evolution in dinosaurs

open access: yesThe Anatomical Record, EarlyView.
Abstract A recent debate has emerged between Caspar et al. (2024) and Herculano‐Houzel (2023) on inferring extinct dinosaur cognition by estimating brain neuron counts. While thought‐provoking, the discussion largely overlooks the function of cognition, as well as partly neglects the difficulties involved in estimating neuron numbers, which according ...
Thomas Rejsenhus Jensen   +7 more
wiley   +1 more source

Pleistocene steppe-tundra insect communities of Beringia

open access: yesArctic, Antarctic, and Alpine Research
The fossil insect fauna of Beringia contributes to our knowledge of the unique Pleistocene steppe-tundra biota. The Beringia insect database facilitated an ecological analysis and comparison of entomofaunas between Western and Eastern Beringia.
Svetlana Kuzmina
doaj   +1 more source

The genus Cotinis Burmeister in the eastern United States,with description of a new species from the Florida Keys, including a checklist of the genus (Coleoptera: Scarabaeidae: Cetoniinae) [PDF]

open access: yes, 2008
In the eastern United States, the genus Cotinis Burmeister previously contained only C. nitida (L.), the common economic pest known as the "Green June Beetle". A new species from the Florida Keys, Cotinis aliena, is here described and illustrated.
Woodruff, Robert E.
core   +1 more source

Why we age

open access: yesBiological Reviews, EarlyView.
ABSTRACT Three categories of explanations exist for why we age: mechanistic theories, which omit reference to evolutionary forces; weakening force of selection theories, which posit that barriers exist that prevent evolutionary forces from optimising fitness in ageing; and optimisation theories, which posit that evolutionary forces actually select for ...
Michael S. Ringel
wiley   +1 more source

RSS (http://www.iaees.org/publications/journals/arthropods/rss.xml)

open access: yesArthropods
Arthropods ISSN 2224-4255 URL: http://www.iaees.org/publications/journals/arthropods/online-version.asp
Arthropods (ISSN 2224-4255)
doaj  

New host records of chewing lice (Mallophaga) on birds in Florida 2 [PDF]

open access: yes, 2003
This is a continuation of Holt (2004). Methods and sources of specimens are as reported in that paper. Representatives of all records below are deposited in the Florida State Collection of Arthropods and/or the author's ...
Holt, J. Adam
core   +1 more source

A Modification of the Biotic Index of Organic Stream Pollution to Remedy Problems and Permit Its Use Throughout the Year [PDF]

open access: yes, 2018
The biotic index of the arthropod fauna of streams is modified by limiting to ten the number of individuals in each taxon used in its calculation. This reduces detrimental effects on the index of certain fairly tolerant taxa in clean streams, effects of ...
Hilsenhoff, William L
core   +2 more sources

Mapping molluscan endocrinology: a systematic and critical appraisal

open access: yesBiological Reviews, EarlyView.
ABSTRACT Historically, a vertebrate‐centric paradigm has framed our interpretation of molluscan endocrinology, with considerable research focusing on vertebrate‐type steroid hormones (e.g. oestrogens, testosterone). However, contradictory evidence on the occurrence of vertebrate‐type steroid hormones in molluscan tissues, and a lack of the specific ...
Konstantinos Panagiotidis   +3 more
wiley   +1 more source

Present and future potential of plant-derived products to control arthropods of veterinary and medical significance [PDF]

open access: yes, 2014
The use of synthetic pesticides and repellents to target pests of veterinary and medical significance is becoming increasingly problematic. One alternative approach employs the bioactive attributes of plant-derived products (PDPs). These are particularly
Finn, Robert   +3 more
core   +1 more source

Surveillance of venomous arthropods on a Nigerian Public University campus

open access: diamond, 2022
ChidiebereEmmanuel Okechukwu   +3 more
openalex   +1 more source

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