Results 41 to 50 of about 16,630 (215)

The Embryonic Development of the Cotylean Polyclad Phrikoceros jannetae

open access: yesActa Zoologica, EarlyView.
ABSTRACT Polyclads exhibit distinct developmental modes ranging from direct to indirect development, with several transitional stages also recognised. The existence of an indirect developmental mode in polyclads with a planktonic life history stage in the form of a free‐swimming larva is unique among all free‐living flatworms and makes polyclads a ...
Mehrez Gammoudi   +6 more
wiley   +1 more source

Planorbidae, Lymnaeidae and Physidae of Ecuador (Mollusca: Basommatophora)

open access: yesMemorias do Instituto Oswaldo Cruz, 2004
In the course of a trip to Ecuador I had the opportunity of collecting topotypic specimens of the following nominal species of pulmonate molluscs: Biomphalaria cousini Paraense, 1966; Planorbis equatorius Cousin, 1887; P.
W Lobato Paraense
doaj   +1 more source

Liver fluke infections in cattle and sheep [PDF]

open access: yes, 2017
The trematode, Fasciola hepatica, is a cosmopolitan parasite of temperate regions that can infect a wide variety of wild and domestic mammalian species, including man.
Forbes, Andrew
core   +1 more source

Prioritising research on endocrine disruption in the marine environment: a global perspective

open access: yesBiological Reviews, EarlyView.
ABSTRACT A healthy ocean is a crucial life support system that regulates the global climate, is a source of oxygen and supports major economic activities. A vast and understudied biodiversity from micro‐ to macro‐organisms is integral to ocean health.
Patricia I. S. Pinto   +23 more
wiley   +1 more source

Moluscos límnicos de uma área do Alto Araguaia (Brasil) Limnic molluscs from Alto Araguaia area (Brazil)

open access: yesRevista de Saúde Pública, 1991
São mostrados os resultados do levantamento dos moluscos de água doce de 5 municípios da área de influência de uma usina hidrelétrica em estudo, formada pelas redondezas da Cachoeira Couto Magalhães no Rio Araguaia.
Horácio Manuel Santana Teles   +2 more
doaj   +1 more source

The snail-killing flies of Alaska (Diptera: Sciomyzidae) [PDF]

open access: yes, 1999
Information is given on the geographic distribution, habitat preferences, larval foods, and immature stages for 57 species of 9 genera of Sciomyzidae known to occur in Alaska. An illustrated key to adults is included.
Foote, B. A.   +2 more
core   +1 more source

Pattern generating role for motoneurons in a rythmically active neuronal network [PDF]

open access: yes, 1998
The role of motoneurons in central motor pattern generation was investigated in the feeding system of the pond snail Lymnaea stagnalis, an important invertebrate model of behavioral rhythm generation.
Benjamin, Paul R   +2 more
core   +2 more sources

A contemporary map of Fasciola hepatica distribution in sheep and cattle in New South Wales

open access: yesAustralian Veterinary Journal, Volume 104, Issue 1-2, Page 25-36, January-February 2026.
Fasciola hepatica is a global threat to livestock production, human health, and food security. Infection causes significant reductions in milk production and quality, feed conversion efficiency, wool quality, and reproductive performance. In New South Wales (NSW), Australia, data on the distribution of F. hepatica are more than 50 years out of date and
SN Vyas   +3 more
wiley   +1 more source

Changes in the Prevalence of Natural Paramphistomum Cercariae Infection in Indoplanorbis and Lymnaea Intermediate Hosts Influenced by Meteorological Factors

open access: yesJournal of Tropical Medicine, 2022
Paramphistomosis is a neglected ruminant parasitic disease caused by trematodes known as Paramphistomum, which has a diheteroxenic life cycle involving freshwater snail genera, i.e., Planorbis and Lymnaea as the intermediate host and mammals as the ...
Naseem Rafiq   +7 more
doaj   +1 more source

Invasive Eurasian Minnow Alters the Trophic Niche and Growth of Brown Trout in High‐Latitude Lakes

open access: yesEcology of Freshwater Fish, Volume 35, Issue 1, January 2026.
ABSTRACT Invasive species pose a major threat to aquatic ecosystems, particularly in high‐latitude lakes which are characterised by low biodiversity. In northern Europe, the Eurasian minnow (Phoxinus phoxinus) has colonised lakes historically dominated by salmonids, raising concerns about the impacts of invasive cyprinids on native fish populations and
Henna Kangosjärvi   +3 more
wiley   +1 more source

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