Results 131 to 140 of about 43,558 (273)

Ingestion of Alexandrium pacificum Cysts by a Deposit Feeder: An Option for Ecosystem‐Based Approach Benefiting Aquaculture and Coastal Communities?

open access: yesNew Zealand Journal of Marine and Freshwater Research, Volume 60, Issue 1, March 2026.
Harmful algal blooms caused by the paralytic shellfish toxin‐producing species Alexandrium pacificum have increased in recent years in one of the most important aquaculture regions of New Zealand, the Marlborough Sounds. Reoccurring blooms have created large cysts beds in the sediments throughout the sounds. In this region, large populations of the sea
Leonardo N. Zamora   +6 more
wiley   +1 more source

Tetrodotoxin – Distribution and Accumulation in Aquatic Organisms, and Cases of Human Intoxication

open access: yesMarine Drugs, 2008
Many pufferfish of the family Tetraodontidae possess a potent neurotoxin, tetrodotoxin (TTX). In marine pufferfish species, toxicity is generally high in the liver and ovary, whereas in brackish water and freshwater species, toxicity is higher in the ...
Osamu Arakawa, Tamao Noguch
doaj  

Distribution and Probabilistic Risk Assessment of Antibiotics, Illegal Drugs, and Toxic Elements in Gastropods from Southeast China

open access: yesFoods
We investigated fourteen antibiotics, three illegal drugs, and two toxic elements in commercially available gastropods from southeast China. The data revealed high detection frequencies (DFs) for florfenicol (61.32%), florfenicol amine (47.33%), and ...
Hai-Tao Shen   +2 more
doaj   +1 more source

The feeding ecology of some zooplankters that are important prey items of larval fish [PDF]

open access: yes, 1984
Diets of 76 species of fish larvae from most oceans of the world were inventoried on the basis of information in 40 published studies. Although certaln geographlc, size- and taxon-specific patterns were apparent, certain zooplankton taxa appeared in the ...
Turner, Jefferson T.
core  

Using Natural History Collections to Determine the Relative Changes in Diversity and Distribution of Freshwater Molluscs in KwaZulu‐Natal, South Africa

open access: yesAfrican Journal of Ecology, Volume 64, Issue 2, March 2026.
ABSTRACT Research using natural history collections to track anthropogenic activities has recently been on the rise. Natural history collections have been utilised beyond their traditional taxonomic and systematic roles, generating data that shape present and future research.
Matabaro Ziganira   +3 more
wiley   +1 more source

Composición, abundancia y distribución de las poblaciones de gasterópodos de importancia comercial en La Guajira, Caribe colombiano Composition, abundance and distribution of populations of commercially important gastropods in La Guajira, Colombian Caribbean

open access: yesRevista de Biología Tropical, 2013
En el Caribe continental colombiano el aprovechamiento del recurso caracol y el estado de sus poblaciones han sido poco estudiados, esto se refleja en la carencia de un ordenamiento pesquero.
Ramón Nieto-Bernal   +4 more
doaj  

Morphological and biomechanical adaptations of larval mandibles in Trichoptera (Insecta)

open access: yesPhysiological Entomology, Volume 51, Issue 1, Page 85-114, March 2026.
Mandible morphology differs between predators and grazers: predators show pointed incisors, grazers sharp edges and setae. Mechanical properties depend on cuticle tanning, not elemental reinforcement. Functional mandible types reflect feeding strategies, with predators specialized for prey capture and grazers for scraping and collecting.
Patrick Below   +3 more
wiley   +1 more source

Evolutionary Systematics of Two Co‐Occurring Paludomid Freshwater Gastropods in Thailand (Cerithioidea: Paludomidae)

open access: yesZoologica Scripta, Volume 55, Issue 2, Page 244-272, March 2026.
ABSTRACT Paludomidae is a diverse family of limnic gastropods in the Cerithioidea, with a distribution range including most of tropical sub‐Saharan Africa, the Nile Valley, Madagascar, the Seychelles, as well as South and Southeast Asia. Its systematics and taxonomy are currently in a state of confusion, with Thailand being inhabited by probably two ...
Matthias Glaubrecht   +6 more
wiley   +1 more source

Mechanisms of near‐normal sea water dolomitisation: Mesohaline‐reflux or syn‐depositional?

open access: yesThe Depositional Record, Volume 12, Issue 1, February 2026.
This study investigates the dolomitisation of the Eocene Dammam Formation on the Arabian Plate using petrographic, mineralogical, geochemical and isotopic analyses. The findings reveal two distinct dolomite types, formed primarily through normal‐to‐mesohaline sea water dolomitisation, challenging previous models such as sabkha‐meteoric mixing.
Misbahu Abdullahi   +3 more
wiley   +1 more source

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