Results 21 to 30 of about 2,889 (214)

Biodiversidad de Hirudinea en ambientes dulciacuícolas serranos (Provincia de Buenos Aires), Argentina

open access: yesRevista del Museo de La Plata, 2017
Diez especies de hirudíneos Glossiphoniidae fueron recolectadas en ambientes dulceacuícolas de Sierra de la Ventana: Helobdella simplex (Moore, 1911); Helobdella brasiliensis Weber, 1915; Helobdella triserialis (Blanchard, 1849);, Helobdella adiastola ...
Betina S. Gullo
doaj   +1 more source

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

Helobdella blinni sp. n. (Hirudinida, Glossiphoniidae) a new species inhabiting Montezuma Well, Arizona, USA

open access: yesZooKeys, 2017
A new leech species Helobdella blinni sp. n., is described from Montezuma Well, an isolated travertine spring mound located in central Arizona, USA. In its native habitat, H. blinni had been previously identified as Helobdella stagnalis (Linnaeus, 1758),
Rebecca K. Beresic-Perrins   +5 more
doaj   +3 more sources

Sucking of human blood by Placobdella costata (O. F. Müller, 1846) (Hirudinida: Glossiphoniidae): Case study with notes on body form

open access: yesEcology and Evolution, Volume 11, Issue 24, Page 17593-17603, December 2021., 2021
In our paper, four events of blood sucking on human by juvenile and adult specimens of Placobdella costata were described. We presented with a new data of juvenile specimens' body form and considered information about the potential role of mammals as hosts and dispersion vector of this leech.
Joanna M. Cichocka   +8 more
wiley   +1 more source

Leech Parasitism of the Gulf Coast Box Turtle, Terrapene carolina major (Testudines:Emydidae) in Mississippi, USA [PDF]

open access: yes, 2017
Ten leeches were collected from a Gulf Coast box turtle, Terrapene carolina major, found crossing a road in Gulfport, Harrison County, Mississippi, USA. Eight of the leeches were identified as Placobdella multilineata and 2 were identified as Helobdella
Hammond, C. I.   +4 more
core   +3 more sources

Non‐invasive surveys of mammalian viruses using environmental DNA

open access: yesMethods in Ecology and Evolution, Volume 12, Issue 10, Page 1941-1952, October 2021., 2021
Abstract Environmental DNA (eDNA) and invertebrate‐derived DNA (iDNA) are used to survey biodiversity non‐invasively to mitigate difficulties in obtaining wildlife samples, particularly in remote areas or for rare species. Recently, eDNA/iDNA were used to monitor known wildlife pathogens; however, most wildlife pathogens are unknown and often ...
Niccolò Alfano   +9 more
wiley   +1 more source

Maternal inheritance of twist and analysis of MAPK activation in embryos of the polychaete Annelid Platynereis dumerilii [PDF]

open access: yes, 2014
In this study, we aimed to identify molecular mechanisms involved in the specification of the 4d (mesentoblast) lineage in Platynereis dumerilii. We employ RT-PCR and in situ hybridization against the Platynereis dumerilii twist homolog (Pdu-twist) to ...
Domsch, Katrin   +4 more
core   +6 more sources

Anthropogenic litter is a novel habitat for aquatic macroinvertebrates in urban rivers

open access: yesFreshwater Biology, Volume 66, Issue 3, Page 524-534, March 2021., 2021
Abstract Anthropogenic litter (solid manufactured waste) is an understudied but pervasive element of river systems worldwide. Its physical structure generally differs from natural substrates, such as gravel and cobbles (hereafter rocks). Consequently, anthropogenic litter could influence ecological communities in urban rivers by providing novel ...
Hazel L. Wilson   +4 more
wiley   +1 more source

Population structure and symbiotic relationships of the invasive species Sinanodonta woodiana (Lea, 1834) in water bodies of Ukraine [PDF]

open access: yesE3S Web of Conferences, 2021
Understanding the process of penetration and distribution of the invasive species Sinanodonta woodiana is important for predicting associated changes in biodiversity and the structure of freshwater communities. The biomass, density, age and sex structure
Yermoshyna Tetiana, Pavliuchenko Оlesia
doaj   +1 more source

Effect of competitive cues on reproductive morphology and behavioral plasticity in male fruitflies [PDF]

open access: yes, 2015
Phenotypic plasticity will be favored whenever there are significant fitness benefits of responding to environmental variation. The extent and nature of the plasticity that evolves depends on the rate of environmental fluctuations and the capacity to ...
Bretman, Amanda   +3 more
core   +4 more sources

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