Results 61 to 70 of about 56,106 (309)

Clade‐wide morphological and functional variation of the sauropsid columella

The Anatomical Record, EarlyView.
Abstract The columella (=stapes) is the middle ear bone of reptiles that transmits vibrations from the environment to the inner ear. It has been shown to exhibit extensive interspecific morphological disparity in several clades; however, its morphological variation and associated functional consequences remain poorly described.
John Peacock, Serjoscha W. Evers, Tiago R. Simões, Garth M. Spellman, Daniel J. Field   +4 more
wiley   +1 more source

Two new species of Phylloporia (Hymenochaetales) from the Neotropics

MycoKeys, 2022
Two new species of Phylloporia, P. crystallina and P. sumacoensis, are described based on 28S ribosomal RNA phylogeny, morphology, host, and geographic distribution. Phylloporia crystallina is characterized by pileate, perennial basidiomata with a duplex context, small pores 9–10 per mm, a monomitic hyphal system, absence of cystidia and cystidioles ...
Meng Zhou, Fang Wu, Yu-Cheng Dai, Josef Vlasák   +3 more
openaire   +4 more sources

Preface: How far has Neotropical Ichthyology progressed in twenty years?

Neotropical Ichthyology, 2018
Studies on the diversity, taxonomy, phylogeny, and biogeography of Neotropical Fishes have thrived over the twenty years that have elapsed since the first symposium on their phylogeny and classification in Porto Alegre, Brazil.
José L. O. Birindelli, Brian L. Sidlauskas   +1 more
doaj   +1 more source

MOLECULAR SEX DETERMINATION IN NEOTROPICAL MONOCHROMATIC HUMMINGBIRDS [PDF]

, 2018
∙ Many species of hummingbirds are sexually monochromatic. This is surprising because in all hummingbird species parental care is carried out by females, while males are promiscuous, and this mating system is usually associated with some form of sexual ...
Costa Lopes, Susana Alexandra, Santos Shibuya, Felipe Leonardo, Gama Mota, Paulo, Roper, James Joseph, Torres Presti, Flavia   +4 more
core   +1 more source

Segmental composition and nerve distribution of the brachial plexus in Galictis cuja

The Anatomical Record, EarlyView.
Abstract Galictis cuja is a neotropical mustelid with terrestrial locomotor habits, yet the anatomy of its brachial plexus has remained undescribed. This study characterizes the origin, organization, and distribution of the brachial plexus nerves in 15 adult specimens (30 antimeres).
Natan da Cruz de Carvalho, Thais Mattos Estruc, Ingrid Bete Palmeira, Julia Fagundes Franco, Emillin Reis Bermudez, Paulo de Souza‐Junior, Marcelo Abidu‐Figueiredo   +6 more
wiley   +1 more source

Biogeographic and diversification patterns of Neotropical Troidini butterflies (Papilionidae) support a museum model of diversity dynamics for Amazonia

BMC Evolutionary Biology, 2012
Background The temporal and geographical diversification of Neotropical insects remains poorly understood because of the complex changes in geological and climatic conditions that occurred during the Cenozoic.
Condamine Fabien L, Silva-Brandão Karina L, Kergoat Gael J, Sperling Felix AH   +3 more
doaj   +1 more source

Two new species of Ageniella Banks, 1912 (Hymenoptera: Pompilidae) from Brazil and updated keys

European Journal of Taxonomy, 2022
Ageniella Banks, 1912 is a paraphyletic group exclusive to the Nearctic and Neotropical regions. The genus has a remarkable morphological diversity among species and strong sexual dimorphism, hampering taxonomic studies of it.
Márcia Rapoza, Cecilia Waichert
doaj   +1 more source

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

The Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga, Grazyelle Sebrenski da Silva, Maria Inês Braga de Oliveira, Jaydione Luiz Marcon, Ruben Dario Morales Gamba   +4 more
wiley   +1 more source

Figures 1–3. 1 in Nocturnal multi-species roosts of Cicindelidae (Coleoptera) in a Neotropical lowland rainforest

, 2021
Figures 1–3. 1) Forest path #1 at the study site in lowland terra firme Venezuelan rainforest, February 1999. 2) Communal roost of Odontocheila Laporte de Castelnau spp. (O. confusa (Dejean) and O. angulipenis W. Horn/O.
Kirmse, Susan, Wiesner, Jürgen, lowland, Neotropical   +2 more
core   +1 more source

Ecology and evolution of pyrazines in insects

Biological Reviews, EarlyView.
ABSTRACT Chemical communication is the oldest and most widespread form of signalling among and within organisms. Among the many compounds involved in such communication, pyrazines – nitrogen‐containing heterocyclic molecules – are especially intriguing due to their widespread occurrence across the tree of life, from bacteria and fungi to insects and ...
Zowi Oudendijk, Niklas Wahlberg, Johanna Mappes   +2 more
wiley   +1 more source