Results 81 to 90 of about 16,726 (307)

The skeleton of the green Iguana iguana (Squamata: Iguanidae) and its intraspecific morphological variation

open access: yesThe Anatomical Record, EarlyView.
Abstract The green iguana (Iguana iguana) is an iguanine lizard with herbivorous and arboreal habits, whose distribution spans through South America, Central America to the south of North America. Although the genus Iguana is well‐known, the species still lacks a comprehensive and up‐to‐date anatomical study, particularly addressing the axial skeleton,
Vieno Rosa   +2 more
wiley   +1 more source

Relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot (Lota lota)

open access: yesIntegrated Environmental Assessment and Management, EarlyView., 2023
Abstract In the Lake Koocanusa‐Kootenai River system (Montana, USA and British Columbia, Canada), selenium (Se) contamination has become an international concern and is suspected to contribute to the observed burbot (Lota lota) population collapse. Due to our limited ability to sample burbot in Lake Koocanusa for monitoring studies, we used a reference
Stephanie D. Graves   +6 more
wiley   +1 more source

Ontogenesis of within-session locomotor habituation in the open field.

open access: yes, 2005
Habituation signifies a decreased response to a constant or repeated stimulus or environment. Although habituation is a fundamental form of nonassociative learning, little is known about its ontogenesis.
Christensson, Maria, Garwicz, Martin
core   +1 more source

Masculinização de larvas de tilápia do Nilo (Oreochromis niloticus L.) a partir de banhos de imersão com 17alfa-metiltestosterona Masculinization of larvae of Nile tilapia (Oreochromis niloticus L.) by immersion baths with alpha-methyltestosterone

open access: yesRevista Brasileira de Zootecnia, 2005
Determinaram-se os períodos ontogênicos de maior sensibilidade das larvas de tilápias do Nilo (Oreochromis niloticus) à masculinização, com 17 alfa-metiltestosterona (MT), a partir de banhos de imersão, contendo 2,0 mg MT.L-1, por 36 horas, em um ...
Robie Allan Bombardelli, Carmino Hayashi
doaj   +1 more source

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

open access: yesThe Anatomical Record, EarlyView.
Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza   +3 more
wiley   +1 more source

Structural-Functional Peculiarities of the Urinary Bladder in Postnatal Ontogenesis

open access: yes, 2016
It is known about the high incidence of the urinary bladder lesions in the structure of urological pathology regardless of age; however, according to the analysis of world literature sources, data on postnatal ontogenetic transformations of its wall ...
Hanna Ersteniuk   +7 more
core   +2 more sources

Dental crown morphological variation and heterodonty in carcharhiniform sharks

open access: yesThe Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

Data for "Multi-scale analysis of fish otolith ontogenesis reveals sexual dimorphism on shape"

open access: yes, 2021
Processed data of the manuscript "Multi-scale analysis of fish otolith ontogenesis reveals sexual dimorphism on shape"
Quinzia Palazzo (11435479)
core   +1 more source

Development of neuropeptide Y-ergic innervation of the small intestine in rats

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2018
Neuropeptide Y (NPY) acts as a neurotransmitter in the autonomic nervous system, including in the metasympathetic intramural ganglia of the intestine.
P.M. Masliukov   +3 more
doaj  

Peculiarities of germination and morphology of seedlings of the genus Pittosporum Banks ex Sol. species

open access: yesІнтродукція Рослин, 2015
For clarification of processes of adaptation in new conditions of growth are investigated the features of seeds germination and seedlings morphology of 5 species of the genus Pittosporum Banks ex Sol.: P. tobira (Thunb.) W.T. Aiton., P.
L.I. Boyko
doaj   +1 more source

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