Results 11 to 20 of about 640 (150)

Registros de sanguijuelas de Costa Rica y clave para la identificación de las especies con redescripción de Cylicobdella costaricae [PDF]

open access: yesRevista Mexicana de Biodiversidad, 2015
En contraste con los enormes esfuerzos realizados por caracterizar la fauna y flora de Costa Rica, con excepción de algunos registros aislados, muy poco se sabe sobre las sanguijuelas (Annelida: Clitellata) en este país.
Alejandro Francisco Oceguera-Figueroa
doaj   +3 more sources

Behavioral variation according to feeding organ diversification in glossiphoniid leeches (Phylum: Annelida). [PDF]

open access: yesSci Rep, 2021
Adaptive radiation is a phenomenon in which various organs are diversified morphologically or functionally as animals adapt to environmental inputs. Leeches exhibit a variety of ingestion behaviors and morphologically diverse ingestion organs.
Kwak HJ   +9 more
europepmc   +3 more sources

Sorting of Glossiphonia complanata (Linnaeus, 1758) (Rhynchobdellida: Glossiphoniidae) from three aquatic plants in Tigris River within Baghdad city

open access: yesEgyptian Journal of Petroleum, 2017
The present study shows that the reason for isolation of Glossiphonia complanata from these aquatic plants was firstly founding of aquatic oligochaeta, snails and chironomidae that settled on aquatic plants as food.
Manar Dawood Salman   +4 more
doaj   +2 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

Can artificial ecological islands alter the biodiversity of macroinvertebrate? A case study in Fujin National Wetland Park, the Sanjiang Plain, China

open access: yesEcology and Evolution, Volume 11, Issue 21, Page 14988-15003, November 2021., 2021
This paper proves that it is feasible to build artificial ecological islands in open water to increase the microhabitat heterogeneity and water‐level gradient as a means of ecological restoration, so as to provide more suitable habitats for aquatic organisms and thus increase the biological diversity of the ecosystem. Macrobenthos are the main food for
Zi‐Ao Yuan   +3 more
wiley   +1 more source

Structure of the vector tissue in piscicolid leeches (Annelida, Hirudinea, Rhynchobdellida, Piscicolidae) [PDF]

open access: yesJournal of Morphology, 2006
AbstractHypodermic insemination occurs in piscicolid leeches (Hirudinea, Rhynchobdellida, Piscicolidae). The spermatophore is implanted in a specialized region of the leech body, the copulatory area. Just beneath the copulatory area, there is a specialized connective tissue (vector tissue) that is considered to guide the sperm toward the ovaries.
Piotr, Swiatek   +2 more
openaire   +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

Phylogenomic analyses reveal a Palaeozoic radiation and support a freshwater origin for clitellate annelids

open access: yesZoologica Scripta, Volume 49, Issue 5, Page 614-640, September 2020., 2020
Abstract Clitellata is a major clade of Annelida comprising nearly all freshwater and terrestrial annelids as well as several marine species. We investigated clitellate phylogenetic relationships using transcriptomes sampled from 74 taxa (64 clitellates and 10 polychaetes), including multiple representatives of nearly all major clitellate higher taxa ...
Christer Erséus   +7 more
wiley   +1 more source

A Survey of the Aquatic Macrobenthos of Waller Creek [PDF]

open access: yes, 1992
This report characterizes the mouth of Waller Creek, while also providing the results of a 10 month research period focusing on macrobenthic life. 876 individuals were collected, and details regarding their collection are included inside the report ...
Ziser, Stephen W.
core   +1 more source

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