Results 61 to 70 of about 6,245 (201)

Biological and toxicological investigations of Chicago area navigation projects [PDF]

open access: yes, 1987
unpublishednot peer ...
Dorkin, John   +4 more
core  

Seasonal Evaluation of Ephemeroptera (Insecta) Fauna of Eastern Mediterranean Basin and Determination of Water Quality With Physicochemical Parameters and Benthic Metrics

open access: yesEcohydrology, Volume 18, Issue 3, April‐May 2025.
ABSTRACT This study evaluates the Ephemeroptera fauna and water quality in the Eastern Mediterranean Basin using physicochemical variables and benthic metrics, offering an ecological water quality analysis. Fieldwork conducted during the spring, summer and autumn of 2019 across 20 localities revealed 965 individuals belonging to 17 species from seven ...
Selda Öztürk   +2 more
wiley   +1 more source

Metazoan parasites of Geophagus brasiliensis (Perciformes: Cichlidae) in Patos lagoon, extreme south of Brazil

open access: yesRevista Brasileira de Parasitologia Veterinária
This study has evaluated the parasitic fauna of 79 pearl cichlids (Geophagus brasiliensis) from the estuary of Patos Lagoon (31° 57' S and 52° 06' W), Rio Grande do Sul, Brazil, during the months of May and June in 2011 and 2012.
Gabriela Lopes Rassier   +6 more
doaj   +1 more source

Genetic differentiation between Arctic and Antarctic monothalamous foraminiferans [PDF]

open access: yes, 2018
Monothalamous (single-chambered) foraminifers are a major component of the benthic meiofauna in high latitude regions. Several morphologically similar species are common in the Arctic and Antarctic.
Bowser, Samuel   +8 more
core  

Differential expression of conserved germ line markers and delayed segregation of male and female primordial germ cells in a hermaphrodite, the leech helobdella. [PDF]

open access: yes, 2013
In sexually reproducing animals, primordial germ cells (PGCs) are often set aside early in embryogenesis, a strategy that minimizes the risk of genomic damage associated with replication and mitosis during the cell cycle.
Cho, Sung-Jin   +2 more
core   +2 more sources

Approaches to Pollution in Lake Ecosystems, the Library of Life: An Example From Uzungöl (Trabzon, Türkiye)

open access: yesEcohydrology, Volume 18, Issue 2, March 2025.
ABSTRACT Lakes are vital ecosystems serving as reservoirs of biodiversity and are key indicators of environmental changes. This study examined the macroinvertebrate community structure and environmental parameters of Lake Uzungöl, a Special Environmental Protection Area in Türkiye, over a 10‐year period (2012–2022).
Deniz Mercan
wiley   +1 more source

Derajat Infestasi Ektoparasit Hirudinea Piscicola SP pada Ikan Kerapu Macan Epinephelus Fuscoguttatus (Forsskal, 1775) dan Kerapu Sunu Plectropomus Maculatus (Bloch, 1790) [PDF]

open access: yes, 2004
Penelititian ini dilakukan untuk mengidentifikasi jenis parasit dan mengetahui derajat infestasi ektoparasit Hirudinea Piscicola sp. pada ikan kerapu macan Epenephelus fuscoguttatus dan ikan kerapu sunu Plectropomus maculatus yang dipelihara dalam tangki
Danakusumah, E. (Edward)   +2 more
core  

Stream Invertebrate Responses to Fine Sediment Depend on the Organic and Inorganic Components

open access: yesFreshwater Biology, Volume 70, Issue 3, March 2025.
ABSTRACT Excess fine sediment ( < 2 mm) is a pervasive stressor of aquatic systems at a global scale. To date, most research quantifying ecological response to deposited fine sediment has been conducted without distinguishing between the organic and inorganic components of fine sediment, leaving mechanistic understanding of how fine sediment affects ...
Morwenna McKenzie   +8 more
wiley   +1 more source

Leeches (Annelida: Hirudinida) of Northern Arkansas [PDF]

open access: yes, 2006
Twenty-one lotic and lentic environments throughout central and northern Arkansas were surveyed for the presence of leeches during June 2004 and April, July - October 2005.
Daniels, Bruce A.   +5 more
core  

The Hirudinea of Illinois

open access: yesIllinois Natural History Survey Bulletin, 1901
This paper is a partial descriptive catalogue of the leech fauna of Illinois. It is founded on collections gathered from time to time during the past twenty-five years by the Illinois State Laboratory under the direction of Prof. S. A. Forbes, ofwhich material by far the most important part, as regards both number of species and individuals and state ...
openaire   +2 more sources

Home - About - Disclaimer - Privacy