Results 21 to 30 of about 642 (140)

COMPARATIVE ULTRASTRUCTURAL STUDY OF THE SALIVARY GLANDS OF TWO HEMATOPHAGOUS LEECHES (ANNELIDA, CLITELLATA, ARHYNCHOBDELLIDA) IN IRAQ

open access: yesBulletin of the Iraq Natural History Museum, 2023
During July -August of 2021, thirty-one leeches were collected from two localities in Erbil and its suburbs for studying the morphological features of jaws, denticles,and salivary gland cells.
Huda Sdiq Bilal, Sherwan Tayeb Ahmed
doaj   +2 more sources

COVID-19 Lockdown Pandemic Period Effects in Highly Impacted Aquatic Ecosystems. [PDF]

open access: yesEnviron Toxicol Chem, 2023
Abstract Human activities severely affect aquatic ecosystems: the lockdown restrictions due to SARS‐CoV‐2 (COVID‐19) have proved that reducing anthropogenic activities can positively influence the environment and mitigate atmospheric pollution. In addition, studies on aquatic ecosystems have highlighted the decrease in suspended matter and pollutant ...
Marcheggiani S   +3 more
europepmc   +2 more sources

Ovary cord micromorphology in the blood-sucking haemadipsid leech Haemadipsa japonica (Hirudinida: Arhynchobdellida: Hirudiniformes) [PDF]

open access: yesMicron, 2020
This is the first report that describes histological and ultrastructural details of ovary organization in haemadipsid leeches. In Haemadipsa japonica, the female reproductive system is organized similar to that of other haemadipsids. Each of the paired and oval ovaries of H. japonica is comprised of the ovary wall (ovisac), which encloses two elongated,
Anna Z. Urbisz   +2 more
openaire   +3 more sources

A new quadrannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from western Honshu, Japan. [PDF]

open access: yesZookeys, 2016
A new quadrannulate species of Orobdella, Orobdellamasaakikuroiwai sp. n., from the mountainous region of central Honshu, Japan is described. This is only the second small species known within this genus, with a body length of less than 4 cm for mature individuals. Phylogenetic analyses using nuclear 18S rDNA and histone H3 as well as mitochondrial COI,
Nakano T.
europepmc   +8 more sources

A global review of problematic and pathogenic parasites of farmed tilapia

open access: yesReviews in Aquaculture, Volume 15, Issue S1, Page 92-153, February 2023., 2023
Abstract Over the past 80 years, tilapia have been translocated globally for aquaculture; active production is recorded in >124 countries. Of 7 million tonnes of tilapia produced in aquaculture, 79% is from 79 countries outside the natural range of tilapia.
Andrew P. Shinn   +15 more
wiley   +1 more source

Freshwater macroinvertebrate traits assessment as complementary to taxonomic information for mining impact detection in the northern Peruvian Andes

open access: yesDiversity and Distributions, Volume 28, Issue 8, Page 1582-1596, August 2022., 2022
Abstract Aim We studied the distribution of freshwater macroinvertebrate taxa and traits to distinguish ecological gradients among the mining‐controlled and natural headwaters, and rural and urban economic activity influences. Location In 2016’s dry season, macroinvertebrate samples were collected at 40 locations in the Mashcon watershed, northern ...
Daniel Mercado‐Garcia   +9 more
wiley   +1 more source

Environmental DNA of preservative ethanol performed better than water samples in detecting macroinvertebrate diversity using metabarcoding

open access: yesDiversity and Distributions, Volume 27, Issue 10, Page 1989-2002, October 2021., 2021
Abstract Aim High‐throughput pipelines supported by eDNA metabarcoding have been applied in various freshwater ecosystems. Both eDNA in ethanol (EtOH) samples (ES‐eDNA) and in water samples (WS‐eDNA) can provide comprehensive classification lists with good taxonomic resolution and coverage for determining freshwater biodiversity and biomonitoring. But,
Yu Wang   +9 more
wiley   +1 more source

First record of the terrestrial predatory leech, Orobdella kawakatsuorum Richardson, 1975 (Clitellata, Hirudinea, Erpobdelliformes), from Moneron Island, Sakhalin Oblast, Russia [PDF]

open access: yes, 2021
The terrestrial predatory leech of the genus Orobdella Oka, 1895 is recorded for the first time from Moneron Island, which is located southwest of Sakhalin, Russia.
Nakano, Takafumi, Prozorova, Larisa A.
core   +2 more sources

The activity of hydrolytic enzymes in the digestive system of Acanthobdellida, Branchiobdellida and Hirudinida (Annelida, Clitellata) – considerations on similarity and phylogeny

open access: yesThe European Zoological Journal, 2021
Activities of nineteen hydrolases were measured in the digestive systems of predatory and blood-feeding true leeches (Hirudinida) and their closest relatives, Branchiobdellida and Acanthobdellida.
J. M. Cichocka   +8 more
doaj   +1 more source

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