Results 11 to 20 of about 661 (172)

A new species of Tisbintra (Harpacticoida, Tisbidae), and range extension for Geehydrosoma brevipodum (Harpacticoida, Cletodidae) from northern Colombia

open access: yesCaldasia, 2017
Water samples taken from the Rodadero Bay, Caribbean Colombian coast, yielded an undescribed species of harpacticoid copepod of the family Tisbidae, Tisbintra monroyi sp. nov. and a new record of Geehydrosoma brevipodum.
Samuel Gómez, Juan M. Fuentes-Reinés
doaj   +4 more sources

Validating COI eDNA Metabarcoding Primers for Detection of Subterranean Fauna. [PDF]

open access: yesMol Ecol Resour
ABSTRACT Subterranean ecosystems host a diverse range of ancient fauna, but studying these ecosystems is challenging due to significant sampling difficulties. Environmental DNA (eDNA) metabarcoding offers a promising approach for monitoring subterranean biodiversity, yet issues such as primer bias and non‐target amplification can complicate its ...
van der Heyde M   +6 more
europepmc   +2 more sources

Shifts in Assembly Rules and Loss of Zooplankton Functional Diversity Across Hypereutrophic Fishponds. [PDF]

open access: yesEcol Lett
Functional diversity of zooplankton declined sharply with increasing eutrophication in hypereutrophic fishponds, despite stable species richness. Community assembly shifted from competition to habitat filtering, leading to functional homogenization (redundancy) and altered interactions among functional guilds. Ponds with total phosphorus below 300 μg/L
Amorim CA, Kainz MJ.
europepmc   +2 more sources

Temperature and Prey Availability Drive Seasonal Variations in Diet, Abundance and Condition of <i>Forsterygion lapillum</i> Across Two Coastal Habitats. [PDF]

open access: yesEcol Evol
This study investigated how temperature, turbidity and prey availability affect the diet, body condition and abundance of F. lapillum in two coastal ecosystems. Results showed seasonal and spatial variation, with body condition, abundance and gut volume positively correlated with warmer temperatures but not with turbidity.
Resende AC, Vinagre C, Rogers A.
europepmc   +2 more sources

The Karyology ofTisbe Reluctans(Copepoda, Harpacticoida) [PDF]

open access: yesCaryologia, 1972
SUMMARYThe diploid chromosome number, 2 n = 24, has been established, in both sexes of the harpacticoid copepod Tisbe reluctans. The chromosomes are metacentric or submetacentric and differentiated sex chromosomes are not present. In the male chiasmatic bivalents form at metaphase I.
D. Colombera, I. Lazzaretto-Colombera
openaire   +2 more sources

Do separated taxa react differently to a long-term salinity increase? The meiobenthos changes in Bay Sivash, largest hypersaline lagoon worldwide

open access: yesKnowledge and Management of Aquatic Ecosystems, 2019
In the world's largest hypersaline lagoon Bay Sivash, its ecosystem twice transformed from a previous state to a new one due to human intervention. Before the North Crimean Canal construction, it was hypersaline (average salinity of 140 g l−1). The canal
Shadrin Nickolai   +7 more
doaj   +1 more source

Seasonal variability of meiobenthic assemblages inhabiting the Nottinghambukta tidal flat, SW Spitsbergen

open access: yesLimnological Review, 2019
The aim of the work was to describe the variability of a group of meiobenthos inhabiting a tidal flat in Nottinghambukta which is influenced by the diverse conditions of a seasonal as well as multi-annual cyclicity. Samples were collected in five series,
Wojtasik Barbara   +3 more
doaj   +1 more source

Production of Tachidius discipes (Copepoda. Harpacticoida)

open access: yesMarine Ecology Progress Series, 1984
The secondary production of the harpacticoid copepod Tachidius discipes Giesbrecht 1881 was estimated during spring 1979. The population was sampled every 3 d. Three generation peaks were observed. These were clearly distinct in the first copepodite stages, but gradually showed more overlap in older stages.
Herman, P.M.J.   +2 more
openaire   +2 more sources

Restructuring the Ancorabolidae Sars (Copepoda, Harpacticoida) and Cletodidae T. Scott, with a new phylogenetic hypothesis regarding the relationships of the Laophontoidea T. Scott, Ancorabolidae and Cletodidae [PDF]

open access: yesZoosystematics and Evolution, 2020
Uncovering the systematics of Copepoda Harpacticoida, the second-most abundant component of the meiobenthos after Nematoda, is of major importance for any further research dedicated especially to ecological and biogeographical approaches.
Kai Horst George
doaj   +3 more sources

Spatial and seasonal distribution of invertebrates in Northern Apennine rheocrene springs

open access: yesJournal of Limnology, 2011
Four perennial rheocrene springs located between 919 and 1252 m a.s.l. on substrata characterized by different lithologies were studied. Water samples and invertebrates were collected seasonally for one year.
Valentina PIERI   +6 more
doaj   +1 more source

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