Results 51 to 60 of about 3,254 (217)

Sex and Ontogenetic Variation in the Crest of Numida meleagris: Implications for Crested Vertebrates

open access: yesThe Anatomical Record, 2019
ABSTRACTCrested vertebrates are known from a wide variety of modern and fossil taxa, however, the actual formation and function of the crest is still debatable. Among modern birds, the globally distributed guinea fowl (Numida meleagris) is characterized by having a cranial bony crest (overlain by keratin), but surprisingly little is known about its ...
Angst, Delphine   +3 more
openaire   +4 more sources

Unruffling the global feather trade: a comparative analysis of CITES and LEMIS records of feathers and bird skins

open access: yesWildlife Biology, Volume 2026, Issue 1, January 2026.
During the 18th and 19th centuries, bird feathers (class: Aves) were harvested from wild populations and sold globally in enormous quantities to meet the rising demand of the fashion industry. Although many laws now prevent similar widescale harvest, there is a paucity of studies on the trade that has continued to occur since the 20th century.
Jasmin Broadbridge   +2 more
wiley   +1 more source

Genetic Diversity of Helmeted Guineafowl (Numida meleagris) Based on Microsatellite Analysis

open access: yesThe Journal of Poultry Science, 2010
Characterization of the genetic diversity of indigenous animal populations is a prerequisite for providing needed information for the conservation of useful genotypes against future uncertainties in the face of daunting global challenges such as climate ...
Boniface B. Kayang   +6 more
doaj   +1 more source

Dynamics of leg muscle function in tammar wallabies (M. eugenii) during level versus incline hopping [PDF]

open access: yes, 2004
The goal of our study was to examine whether the in vivo force-length behavior, work and elastic energy savings of distal muscle-tendon units in the legs of tammar wallabies (Macropus eugenii) change during level versus incline hopping.
Baudinette, R. V.   +3 more
core   +2 more sources

Formation, preservation, and interpretation of dinosaur tracks

open access: yesPalaeontology, Volume 69, Issue 1, January/February 2026.
Abstract The fossilized tracks of dinosaurs were first reported in the scientific literature in 1836, not long after Buckland's discovery of Megalosaurus. Tracks record aspects of dinosaur locomotion, diversity, and ecology. To recover this information from a track requires an understanding of the track forming process.
Peter L. Falkingham, Stephen M. Gatesy
wiley   +1 more source

Comportamento de predação por cutias (Dasyprocta sp.) (Mammalia, Rodentia) em cativeiro: considerações sobre reintrodução. Agouti (Dasyprocta sp.) (Mammalia, Rodentia) predatory behavior in capitivity: considerations about reintroduction. [PDF]

open access: yesRevista do Instituto Florestal, 2009
Oito cutias foram mantidas em umrecinto de 10 por 12 m, na chácara Santo Antônio,Campinas, SP. No mesmo recinto eram mantidasgalinhas adultas e cinco pintinhos devar. domestica .
Luiz Octavio MARCONDES-MACHADO
doaj  

Генетичното детерминиране на цвета на оперението при домашната токачка (Numida Meleagris)

open access: yesЖивотновъдни науки, 2021
Токачката, макар и по-слабо и неравномерно разпространена в света, а в някои страни (в т.ч. и нашата) и сочена като нетрадиционен вид птица, добива все по-голяма популярност дори в такива страни като Скандинавските и Япония.
Матина Николова   +1 more
doaj  

EVALUATION OF GENETIC SIMILARITY BETWEEN WHITE AND GREY VARIETIES OF GUINEA FOWL (NUMIDA MELEAGRIS) [PDF]

open access: yesJournal of Central European Agriculture, 2012
The aim of the study was to determine DNA polymorphism between and within white and grey varieties of guinea fowl. At the end of 12 weeks of age, blood was sampled from 13 white and 16 grey guinea fowl, and DNA was isolated.
Małgorzata BAWEJ   +2 more
doaj   +1 more source

The Extra Load Index as a method for comparing the relative economy of load carriage systems [PDF]

open access: yes, 2010
The Extra Load Index (ELI) has been proposed as a suitable method of assessing the relative economy of load carriage systems. The purpose of this study was to determine, based on empirical evidence, that the ELI can accommodate variations in both body ...
Cooke, Carlton   +4 more
core   +4 more sources

Species Diversity and Geographical Distribution of Poultry Ascaridids: A Scoping Review

open access: yesJournal of Parasitology Research, Volume 2026, Issue 1, 2026.
Poultry nematodes, particularly Ascaridid species, significantly affect avian health and productivity and are widely distributed globally. Yet despite over 80% of poultry in developing countries being raised under extensive rearing systems, knowledge on infection risks posed by different poultry nematodes remains limited.
Chet Raj Pathak   +3 more
wiley   +1 more source

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