Results 31 to 40 of about 1,648 (198)

Morphometry of the eyes in regenerant of genus Dugesia (Platyhelminthes, Turbellaria, Dugesiidae) Morfometria de olhos em regenerantes do gênero Dugesia (Platyhelminthes, Turbellaria, Dugesiidae)

open access: yesBrazilian Journal of Biology, 2004
The photodocumentation technique was used weekly to observe until the end of the regenerative process of eyes in three species of Dugesia. Morphometric data based on the measurement of 96 samples of the species: Dugesia tigrina, D.
N. M. R. de Campos-Velho   +2 more
doaj   +1 more source

Meiobenthic Invertebrates Community Associated with Aquatic plant Ceratophyllum demersum Salamiyat irrigation canal / north Baghdad

open access: yesمجلة بغداد للعلوم, 2017
The aim of the present study is to study the meiobenthic invertebrate's community associated with the aquatic plant Ceratophyllum demersum in Al-Salamiyat irrigation canal / north Baghdad, with the chemical and physical parameters of the canal water ...
Baghdad Science Journal
doaj   +1 more source

Habitat structure and zonation patterns of northwestern Mediterranean shoreline strands

open access: yesScientia Marina, 2017
We studied the habitat structure (macrofaunal assemblages and bottom types) and zonation patterns of 29 unvegetated shoreline strands along the 900-km coast of Catalonia (NW Mediterranean Sea).
Simone Mariani   +5 more
doaj   +1 more source

An overview of stygobiontic invertebrates of Poland based on published data

open access: yesSubterranean Biology, 2017
Based on published literature, at least eighty species of stygobiontic invertebrates are confirmed in Poland. The highest number of these species is found in interstitial waters and wells, while a lower number was discovered in caves and springs ...
Elzbieta Dumnicka, Joanna Galas
doaj   +3 more sources

TURBELLARIA FROM SOMALIA [PDF]

open access: yesMonitore Zoologico Italiano. Supplemento, 1972
SUMMARY Three new species of Polycystididae are described. They occur in marine habitats in the neighbourhood of Mogadiscio (Somalia). Djeziraia pardii n.g. n.sp. has paired gonads, a male copulatory organ with unpaired seminal vesicle, interposed prostate bulb and a simple subcylindrical stylet (84 J.m long). The female atrial organs are composed of a
openaire   +1 more source

Descripción del ensamblaje de macroinvertebrados acuáticos, asociados a hojarasca y su relación con variables físicas, en Quebrada Ancha, provincia de Colón, Panamá, en el periodo 2018-2019

open access: yesTecnociencia
El estudio se realizó en Quebrada Ancha (Colón), de octubre de 2018 a junio de 2019, con el objetivo de: 1) describir el ensamblaje de macroinvertebrados asociados a hojarasca y 2) relacionar el ensamblaje con las variables físicas.
Yolanda Águila S   +2 more
doaj   +1 more source

Removing invasive stream macrofauna shifts nontarget invertebrate mesofauna through facilitation

open access: yesEcosphere, Volume 16, Issue 12, December 2025.
Abstract Positive interactions among non‐native species can drive invasional meltdowns to the detriment of native biota. Here, we assessed whether targeted control of aquatic invasive species (AIS) can benefit native species by eliminating synergies among invaders.
Jennifer Whitt   +5 more
wiley   +1 more source

Prolonged low flows and non‐native fish operate additively to alter insect emergence in mountain streams

open access: yesLimnology and Oceanography, Volume 70, Issue S2, Page S377-S391, December 2025.
Abstract Climate‐induced flow alteration is decreasing snowpack and advancing snowmelt, subjecting mountain streams to longer low‐flow periods. Yet, anticipating how stream ecosystems respond to prolonged low flows remains challenging because distinct trophic levels can respond differently, and non‐native predators can dampen or amplify responses. Here,
Charlotte Evangelista   +5 more
wiley   +1 more source

Far From Roads, Challenges Arise: Unravelling Knowledge Gaps in the Occurrence of Cave‐Restricted Species on the African Continent

open access: yesAfrican Journal of Ecology, Volume 63, Issue 8, December 2025.
ABSTRACT Understanding patterns of biodiversity distribution is fundamental for ecology, biogeography, and conservation. However, persistent challenges arise from the inaccessibility of many regions and habitats. Subterranean environments, in particular, host highly distinctive and specialised faunal assemblages, yet their investigation is hindered by ...
Lais Furtado Oliveira   +3 more
wiley   +1 more source

Sublittoral meiobenthic assemblages from disturbed and non-disturbed sediments in the Balearics

open access: yesScientia Marina, 2000
Qualitative and quantitative differences in species composition of meiobenthic communities illustrate the differences among various taxonomic assemblages in the Balearic Islands (Western Mediterranean) analysed by means of multivariate analysis.
S. Deudero, M. Vincx
doaj   +1 more source

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