Results 1 to 10 of about 311 (96)

Alarm cue induces an antipredator morphological defense in juvenile Nicaragua cichlids Hypsophrys nicaraguensis

open access: yesCurrent Zoology, 2010
Olfactory cues that indicate predation risk elicit a number of defensive behaviors in fishes, but whether they are sufficient to also induce morphological defenses has received little attention. Cichlids are characterized by a high level of morphological
Maria E. ABATE, Andrew G. ENG, Les KAUFMAN
doaj   +4 more sources

In search of new brain biomarkers of stress [PDF]

open access: yesResearch Results in Pharmacology, 2021
The aim: of the study was to investigate the level of ghrelin in various brain structures during a stress response in Zebrafish to a predator, to evaluate this indicator as a potential biomarker of stress, and the effect of a benzodiazepine tranquilizer (
Petr D. Shabanov   +4 more
doaj   +4 more sources

Heterospecific aggression bias towards a rarer colour morph. [PDF]

open access: yesProc Biol Sci, 2015
Colour polymorphisms are a striking example of phenotypic diversity, yet the sources of selection that allow different morphs to persist within populations remain poorly understood.
Lehtonen TK, Sowersby W, Wong BB.
europepmc   +2 more sources

Aggression towards shared enemies by heterospecific and conspecific cichlid fish neighbours. [PDF]

open access: yesOecologia, 2019
Successful territory defence is a prerequisite for reproduction across many taxa, and often highly sensitive to the actions of territorial neighbours. Nevertheless, to date, assessments of the significance of the behaviour of heterospecific neighbours ...
Lehtonen TK.
europepmc   +2 more sources

Allopatry, competitor recognition and heterospecific aggression in crater lake cichlids. [PDF]

open access: yesBMC Evol Biol, 2016
Aggressive behaviour can have significant evolutionary consequences–not only within species, but also in the context of heterospecific interactions. Here, we carried out an experimental field study to investigate the importance of phenotypic similarity ...
Lehtonen TK   +3 more
europepmc   +2 more sources

Similarities in biological processes can be used to bridge ecology and molecular biology. [PDF]

open access: yesEvol Appl, 2020
Abstract Much of the research in biology aims to understand the origin of diversity. Naturally, ecological diversity was the first object of study, but we now have the necessary tools to probe diversity at molecular scales. The inherent differences in how we study diversity at different scales caused the disciplines of biology to be organized around ...
Hallin J   +6 more
europepmc   +2 more sources

Larval development of Hypsophrys nicaraguensis (Pisces: Cichlidae) under laboratory conditions

open access: yesRevista de Biología Tropical, 2011
The cichlid Hypsophrys nicaraguensis is a popular fish known as butterfly, and despite its widespread use as pets, little is known about its reproductive biology.
Alex Molina Arias
doaj   +7 more sources

Asymmetric auxin distribution establishes a contrasting pattern of aerenchyma formation in the nodal roots of Zea nicaraguensis during gravistimulation

open access: yesFrontiers in Plant Science, 2023
Auxin distribution is essential for determining root developmental patterns. The formation of lateral roots and constitutive aerenchyma, which is a gas space developed through cell death, is regulated by auxin in rice (Oryza sativa).
Takaki Yamauchi   +2 more
exaly   +2 more sources

QTLs for constitutive aerenchyma from Zea nicaraguensis improve tolerance of maize to root-zone oxygen deficiency

open access: yesJournal of Experimental Botany, 2019
A maize introgression line is developed harboring QTLs from Zea nicaraguensis for constitutive aerenchyma, which allows oxygen to diffuse along roots immediately after waterlogging and contributes to oxygen deficiency tolerance.
Hirokazu Takahashi   +2 more
exaly   +2 more sources

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