Results 21 to 30 of about 10,631 (210)

Freshwater hydrozoan blooms alter activity and behaviour of territorial cichlids in Lake Tanganyika [PDF]

open access: yesRoyal Society Open Science, 2019
Blooms of gelatinous zooplankton can represent dramatic environmental perturbations for aquatic ecosystems. Yet, we still know little about how blooms impact fitness-related behaviours of fish caught within their areas of effect, especially for ...
Aneesh P. H. Bose   +2 more
doaj   +1 more source

Seasonal Changes in Vertical Distribution and Population Structure of the Dominant Hydrozoan Aglantha digitale in the Western Subarctic Pacific

open access: yesOceans, 2023
Hydrozoans are numerically dominant taxa in gelatinous zooplankton communities of the worldwide oceans and play an energy transfer role connecting primary producers and higher trophic level organisms. In the western subarctic Pacific, St.
Mari Aizawa, Tian Gao, Atsushi Yamaguchi
doaj   +1 more source

Towards understanding the phylogenetic history of Hydrozoa: Hypothesis testing with 18S gene sequence data

open access: yesScientia Marina, 2000
Although systematic treatments of Hydrozoa have been notoriously difficult, a great deal of useful information on morphologies and life histories has steadily accumulated. From the assimilation of this information, numerous hypotheses of the phylogenetic
A. G. Collins
doaj   +1 more source

The mitochondrial genome of Nemalecium lighti (Hydrozoa, Leptothecata)

open access: yesMitochondrial DNA. Part B. Resources, 2021
The hydrozoan species Nemalecium lighti (Hargitt, 1924) is widely distributed in tropical marine waters around the world. Here we report the complete linear mitochondrial genome of N. lighti from Sint Eustatius (Lesser Antilles). The mitochondrial genome
Jan-Niklas Macher   +5 more
doaj   +1 more source

Spatial Ecology of the Association between Demosponges and Nemalecium lighti at Bonaire, Dutch Caribbean

open access: yesDiversity, 2022
Coral reefs are known to be among the most biodiverse marine ecosystems and one of the richest in terms of associations and species interactions, especially those involving invertebrates such as corals and sponges.
Jacopo Gobbato   +6 more
doaj   +1 more source

Integration of Morphological Data into Molecular Phylogenetic Analysis: Toward the Identikit of the Stylasterid Ancestor [PDF]

open access: yes, 2016
Stylasteridae is a hydroid family including 29 worldwide-distributed genera, all provided with a calcareous skeleton. They are abundant in shallow and deep waters and represent an important component of marine communities.
Negrisolo, ENRICO MASSIMILIANO   +3 more
core   +3 more sources

Localization of Multiple Jellyfish Toxins Shows Specificity for Functionally Distinct Polyps and Nematocyst Types in a Colonial Hydrozoan

open access: yesToxins, 2023
Hydractinia symbiolongicarpus is a colonial hydrozoan that displays a division of labor through morphologically distinct and functionally specialized polyp types.
Anna M. L. Klompen   +2 more
doaj   +1 more source

Macroscale abundance patterns of hydromedusae in the temperate Southwestern Atlantic (27º-56º S) [PDF]

open access: yes, 2019
Gelatinous organisms are crucial components of marine ecosystems and some species imply social and economic consequences. However, certain geographic areas, such as the temperate Southwestern Atlantic (SWA, 27 - 56 S), remain understudied in terms of ...
Chazarreta, Carlo Javier   +5 more
core   +1 more source

Comparative Analysis of the Soluble Proteome and the Cytolytic Activity of Unbleached and Bleached Millepora complanata (“Fire Coral”) from the Mexican Caribbean

open access: yesMarine Drugs, 2019
Coral bleaching caused by global warming has resulted in massive damage to coral reefs worldwide. Studies addressing the consequences of elevated temperature have focused on organisms of the class Anthozoa, and up to now, there is little information ...
Víctor Hugo Hernández-Elizárraga   +9 more
doaj   +1 more source

New species of Eirenidae (Hydrozoa: Leptothecata) from the Amazonian coast (northern Brazil)

open access: yesScientia Marina, 2020
Two new Eirenidae medusae species were collected on the Amazonian coast, Eutima marajoara n. sp. and Helgicirrha angelicae n. sp. The former differs from other species of the genus by the gonads extending along almost the entire length of the ...
Everton Giachini Tosetto   +2 more
doaj   +1 more source

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