Results 21 to 30 of about 4,483 (164)

Spatiotemporal assessment of benthic macroinvertebrate communities in the Bermejo River Basin in the Ecuadorian Amazonia

open access: yesLimnology and Oceanography Letters, Volume 10, Issue 3, Page 371-380, June 2025.
Abstract The Cofán communities rely on the Cofán Bermejo Ecological Reserve for their survival and cultural practices. Due to the rugged and inaccessible topography of the reserve in the Northern Ecuadorian Amazon region, limited biomonitoring and ecological characterization studies of the ecosystem health have been conducted.
Federico Sinche Chele   +8 more
wiley   +1 more source

Results of the Austrian-Ceylonese hydrobiological mission 1970 of the 1st Zoological Institute of the University of Vienna (Austria) and the Department of Zoology of the Vidyalankara University of Ceylon, Kelaniya. Pt. 1. Preliminary report: introduction and description of the stations [PDF]

open access: yes, 1972
The Austrian-Ceylonese hydrobiological mission of 1970 investigated and made collections from 36 flowing water systems (brooks, torrents, rivers); of these, 34 water systems were in the mountains regions of south-west and south-east of Sri Lanka.
Costa, H.H., Starmuhlner, F.
core  

Why the Long “Horns”? Fine‐Scale Morphology Suggests Tactile Demands Contributed to the Exaggeration of Male Longhorned Beetle Antennae (Coleoptera: Cerambycidae)

open access: yesEcology and Evolution, Volume 15, Issue 5, May 2025.
Exceptionally elongated antennae are common in male longhorned beetles (Coleoptera: Cerambycidae), but their function and evolution are poorly understood. Through scanning electron microscopy and antennal morphometrics of multiple Anoplistes species (Cerambycidae), our study revealed that elongate antennae are more likely adaptive for close‐range ...
Rowan L. K. French   +4 more
wiley   +1 more source

A biological tool to assess flow connectivity in reference temporary streams from the Mediterranean Basin [PDF]

open access: yes, 2015
Many streams in the Mediterranean Basin have temporary flow regimes. While timing for seasonal drought is predictable, they undergo strong inter-annual variability in flow intensity.
Bonada i Caparrós, Núria   +14 more
core   +1 more source

Embryonic Development of Appasus japonicus Vuillefroy, With Special Reference to Mouthparts Formation (Insecta: Heteroptera, Belostomatidae)

open access: yesJournal of Morphology, Volume 286, Issue 5, May 2025.
In this study, we provide a detailed description of the embryonic development of Appasus japonicus, focusing on the formation of its specialized mouthparts. We identify homologies between the maxillary plate and maxillary palp and most parts of the stylet‐like mandibles and maxillae are housed within the labial palp.
Tomoya Suzuki   +3 more
wiley   +1 more source

Assessing Fish Community Structure and Diversity Across Environmental Gradients in a Tropical Bay

open access: yesMarine Ecology, Volume 46, Issue 2, March 2025.
ABSTRACT Understanding the relationship between species distribution and the environment across spatial gradients is crucial for biodiversity evaluation. We surveyed fish populations in a tropical bay, covering a spatial gradient from the outer zone with favorable marine conditions to the inner zone affected by human activities.
Leonardo Almeida Freitas   +1 more
wiley   +1 more source

Revision of the Ptilomera-Group of the Gerridae, with Descriptions of three New Species (Heteroptera) [PDF]

open access: yes, 1927
During a recent visit to Paris I had the opportunity to examine the collection of Gerridae in the National Museum of Natural History. In this collection I found two very interesting and apparently new species of the Ptilomera-group.
Esaki, Teiso
core  

Morphological structure of salivary glands, alimentary canal, and Malpighian tubules in adult Eurydema spectabilis Horváth, 1882 (Heteroptera, Pentatomidae)

open access: yesMicroscopy Research and Technique, Volume 88, Issue 1, Page 323-341, January 2025.
In E. spectabilis, the salivary glands are divided into principal and accessory glands. Microvilli and numerous secretory granules were found in Malpighian tubules. Numerous uric acid crystals and bacteria were found in the rectum lumen. Abstract Eurydema spectabilis (Heteroptera: Pentatomidae) has a piercing‐sucking mouth type and feeds on plant sap ...
Hicret Arslan, Selami Candan
wiley   +1 more source

Chromosomes of five species of sea-skater (Gerridae-Heteroptera) [PDF]

open access: yesGenetica, 1983
We report here the first chromosome numbers for sea-skaters. Meiotic metaphase figures were obtained from the testes of three littoral species: Asclepios shiranui, Halobates flaviventris and H. robustus and two pelagic species: H. germanus and H. micans.
Newman, L. J., Cheng, L.
openaire   +2 more sources

Diversity, Limnology, and Socioeconomic Significance of Wetlands of Assam, India: A Comprehensive Review

open access: yesInternational Journal of Zoology, Volume 2025, Issue 1, 2025.
The present review examines the biodiversity, ecological functions, and limnological attributes of wetlands in Assam, India, emphasizing aquatic biodiversity and its socioeconomic significance for local communities. The study employs a quasisystematic literature review methodology, supported by comprehensive database searches, stringent inclusion ...
Pallwabee Duarah   +4 more
wiley   +1 more source

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