Results 91 to 100 of about 5,724 (199)

Phylogeny of Annelida (Lophotrochozoa): total-evidence analysis of morphology and six genes

open access: yesBMC Evolutionary Biology, 2009
Background Annelida is one of the major protostome phyla, whose deep phylogeny is very poorly understood. Recent molecular phylogenies show that Annelida may include groups once considered separate phyla (Pogonophora, Echiurida, and Sipunculida) and that
Piálek Lubomír   +3 more
doaj   +1 more source

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

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   +1 more source

Рідкісні види п'явок, молюсків і ракоподібних прісних водойм Харківської області [PDF]

open access: yes, 2015
Збірка описів рідкісних видів безхребетних, які живуть у прісних водоймах Харківщини, присвячена кільчастим червам (п'явкам), молюскам і ракоподібним, що потребують охорони.
Коваленко, М. В.   +3 more
core  

The Use of Macrozoobenthos Community to Determinethe Senapelan River Water Quality [PDF]

open access: yes, 2016
Senapelan River is one of the polluted river in Pekanbaru. This research aims to determine the water quality of the river based on physical, chemical and biological parameters, namely the macrozoobenthos community. This research was conducted from May to
Adriman, A. (Adriman)   +2 more
core  

Registros de sanguijuelas de Costa Rica y clave para la identificación de las especies con redescripción de Cylicobdella costaricae Records of leeches from Costa Rica and taxonomic key for species identification with a redescription of Cylicobdella costaricae

open access: yesRevista Mexicana de Biodiversidad, 2012
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 Oceguera-Figueroa   +1 more
doaj  

First record of Limnodrilus claparedeianus ratzel, 1868 (Annelida: Oligochaeta: tubificidae) from Anzali wetland, Guilan Province, Iran [PDF]

open access: yes, 2015
Oligochaeta worms are important organisms in aquatic ecosystem. Their omnipresence makes them as an indicator of environmental changes and health of aquatic ecosystem.
Fatemi, M.R.   +4 more
core   +1 more source

Использование пропионо-гематоксилина в изучении зародышевой линии медицинской пиявки Hirudo medicinalis (Clitellata, Hirudinea) [PDF]

open access: yes, 2007
Приведено подробное описание методов и результатов изучения мейотических делений в сперматогенезе медицинской пиявки Hirudo medicinalis. По данным, полученным для метафазы I (поздняя диплотена), можно утверждать, что гаплоидный набор хромосом этого вида ...
Дорошенко, К.А.   +4 more
core  

Commensalism and parasitic infestation in crayfish (Astacus leptodactylus Eschscholtz, 1823) of Aras Dam Reservoir, Iran [PDF]

open access: yes, 2017
The freshwater crayfish of the Aras Reservoir is an important economic fisheries resource of West Azarbaijan, Iran. This study was conducted to evaluate the prevalence of parasitic infestation of Crayfish seasonally in this area in 2010.
Mehrabi, M.R.   +3 more
core  

Kondisi Perairan Berdasarkan Bioindikator Makrobentos di Sungai Seketak Tembalang Kota Semarang [PDF]

open access: yes, 2012
Seketak River is a river in the upstream region at Tembalang. The area which was previously an open area for water absorption, has changed into the campus and residential areas.
Kawuri, L. (Lintang)
core  

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