Results 71 to 80 of about 184,135 (277)

Improving the conservation value of invertebrates through ecotourism : component A.

open access: yes, 2003
Thesis (M.Sc.)-University of Natal, Pietermaritzburg, 2003.Invertebrates are suffering the greatest species loss in the current biodiversity crisis. These animals perform essential ecosystem functions upon which humanity depends yet they are largely ...
Huntly, Philippa.
core  

Lethal injuries on the scaphitid ammonoid Hoploscaphites nicolletii (Morton, 1842) in the Upper Cretaceous Fox Hills Formation, South Dakota, USA

open access: yesSwiss Journal of Palaeontology
Predator–prey relationships are considered a major driver for the evolution of organisms, and thus contributed to shaping morphology, ecology, and diversity.
Amane Tajika   +3 more
doaj   +1 more source

Faunistic Study of Ascidians (Chordata: Tunicata) From The northern Limit of Suez Canal, Port Said, Egypt [PDF]

open access: yesAlfarama Journal of Basic & Applied Sciences
Subphylum: Tunicata, Class Ascidiacea comprises ascidians either colonial or solitary species which have received little research attention in Port Said coasts, Egypt, despite their high biodiversity in the study area.
Sarah Elgendy   +3 more
doaj   +1 more source

REVISION OF THE FAMILY SPHECIDAE (HYMENOPTERA, APOIDEA) IN IRAQ

open access: yesBulletin of the Iraq Natural History Museum, 2019
A revision study of the Sphecidae from Iraq is presented. A survey is conducted to collect the specimens from different regions; generally, there were 41 species belonging to 12 genera and 4 subfamilies are revised with synonyms.The current investigation
Razzaq Shalan Augul
doaj   +1 more source

refloraR: An R package for efficiently retrieving and analyzing plant specimen data from the Herbário Virtual Reflora

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Advances in the digitization of herbarium collections are enabling open access to specimen data for research and conservation. In Brazil, the Herbário Virtual Reflora (HVR) hosts over 4.8 million high‐resolution images of botanical specimens and their associated data from 86 national and international herbaria.
Carlos Calderón del Cid   +5 more
wiley   +1 more source

Ecology and classification of North American freshwater invertebrates /

open access: yes, 2010
The third edition of Ecology and Classification of North American Freshwater Invertebrates continues the tradition of in-depth coverage of the biology, ecology, phylogeny, and identification of freshwater invertebrates from the USA and Canada.
Thorp, James H., Covich, Alan P.
core  

Patterns of spinal motion, kinematic spaces and the land‐to‐sea transition in carnivorans

open access: yesThe Anatomical Record, EarlyView.
Using 3D reconstructions, we quantify intervertebral joint mobility to investigate how cervical, thoracic, and lumbar vertebral regions evolved distinct kinematic roles in pinnipeds. The findings reveal lineage‐specific adaptations for swimming and highlight the functional significance of vertebral joint flexibility in ecological transitions.
Juan Miguel Esteban   +3 more
wiley   +1 more source

Hematological Values of Two Species of Amazonian Caimans, Caiman crocodilus and Melanosuchus niger

open access: yesLimnological Review
Determining hematological values is essential to provide baseline health and condition data. We evaluated the hematological parameters of free-living individuals of Caiman crocodilus and Melanosuchus niger from the middle Negro River region of Brazil. We
Adriano Teixeira de Oliveira   +13 more
doaj   +1 more source

A new species of Lonchidiidae (Hybodontiformes) from the Late Jurassic of Brazil (Aliança Formation, Jatobá Basin)

open access: yesThe Anatomical Record, EarlyView.
Abstract The Aliança Formation (Jatobá Basin) represents lacustrine deposits formed in oxygenated waters that hosted a diverse fauna, including Hybodontiform sharks. Within this group, the Family Lonchidiidae comprises 11 valid genera, with Parvodus previously reported in Brazilian deposits from the Brejo Santo Formation (Araripe Basin, Late Jurassic ...
Larissa de Souza Ribeiro   +1 more
wiley   +1 more source

Endosymbiotic microorganisms of aphids (Hemiptera: Sternorrhyncha: Aphidoidea): Ultrastructure, distribution and transovarial transmission

open access: yesEuropean Journal of Entomology, 2014
Aphidoidea, endosymbiotic bacteria, bacteriocytes, transovarial transmission of endosymbiotic bacteria The ultrastructure, distribution and transovarial transmission of endosymbiotic bacteria in representatives of six aphid families: Eriosomatidae ...
Anna MICHALIK   +3 more
doaj   +1 more source

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