Results 11 to 20 of about 66 (61)

Phylogeography and molecular diversity of two highly abundant Themisto amphipod species in a rapidly changing Arctic Ocean. [PDF]

open access: yesEcol Evol, 2023
This study investigates the genetic diversity, connectivity and population structure of the two abundant pelagic amphipod species Themisto libellula (Figure a) and Themisto abyssorum (Figure b) in the Arctic. This was achieved using DNA sequence variation at the mitochondrial cytochrome c oxidase subunit 1 gene. We show, for the first time, contrasting
Murray A   +4 more
europepmc   +2 more sources

Contrasting patterns in the occurrence and biomass centers of gravity among fish and macroinvertebrates in a continental shelf ecosystem. [PDF]

open access: yesEcol Evol, 2021
Habitat models for marine fish and macroinvertebrates were used to estimate occurrence and biomass center of gravity (COG). The COGs of occupancy and biomass habitat were separated by significant distances and trended over time. These results suggest that climate change forced change in distribution will differentially affect occurrence and biomass of ...
Friedland KD, Smoliński S, Tanaka KR.
europepmc   +2 more sources

Seasonal shifts in feeding patterns: Individual and population realized specialization in a high Arctic fish. [PDF]

open access: yesEcol Evol, 2019
By taking an alternative approach to dietary analysis, this article challenges the commonly held assumption that polar cod is a generalist predator and argues that it can display strong temporal and geographical dietary specialization. Abstract Species with a broad and flexible diet may be at an advantage in a rapidly changing environment such as in ...
Cusa M, Berge J, Varpe Ø.
europepmc   +2 more sources

Preemptive Circular Defence of Immature Insects: Definition and Occurrences of Cycloalexy Revisited

open access: yesPsyche: A Journal of Entomology, Volume 2014, Issue 1, 2014., 2014
Cycloalexy was coined by Vasconcellos‐Neto and Jolivet in 1988 and further defined by Jolivet and collaborators in 1990 in reference to a specific type of circular defence. The term has been applied to numerous organisms, including adult insects, nymphs, and even vertebrates, but has lost precision with the accumulation of anecdotal reports not ...
Guillaume J. Dury   +3 more
wiley   +1 more source

Deepwater Sharks at Their Northern Limits—Distribution, Diet and Trophic Relations

open access: yesMarine Ecology, Volume 46, Issue 1, January 2025.
ABSTRACT Deepwater areas and continental slope regions south and west off Iceland are characterized by a relatively high species diversity and abundance of sharks that likely play a critical ecological role within this ecosystem. The study investigates trophic ecology of the sharks employing stomach content analysis and stable isotope analysis of ...
Jón Sólmundsson   +2 more
wiley   +1 more source

Hipéridos (Crustacea: Amphipoda) en el sector norte del Pacífico oriental tropical colombiano Hyperiids (Crustacea: Amphipoda) along the northern margin of the eastern tropical Pacific of Colombia

open access: yesLatin American Journal of Aquatic Research, 2009
Con el objetivo de analizar la composición, abundancia y diversidad de la comunidad de anfipodos hipéridos en las localidades de Punta Cruces y Cabo Marzo, costa norte del Pacífico colombiano (Pacífico oriental tropical), se realizó una campaña de ...
Bellineth Valencia, Alan Giraldo
doaj  

Anfípodos hiperídeos (Crustacea: Peracarida) del Parque Nacional Isla del Coco, Costa Rica, Pacífico Tropical Oriental

open access: yesRevista de Biología Tropical, 2012
Los anfípodos hiperídeos son uno de los grupos de crustáceos pelágicos más frecuentemente encontrados y están entre los más diversos del zooplancton marino. Para determinar la composición de especies de anfípodos hipéridos que habitan las aguas alrededor
Rebeca Gasca, Álvaro Morales-Ramírez
doaj  

Resource Partitioning among "Ancillary" Pelagic Fishes (Scomber spp., Trachurus spp.) in the Adriatic Sea. [PDF]

open access: yesBiology (Basel), 2023
Da Ros Z   +8 more
europepmc   +1 more source

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