Results 51 to 60 of about 25,769 (226)

Neuroanatomical diversity in Teleocichla with new volumetric and histological insights into the encephalon of Teleocichla monogramma Kullander 1988

open access: yesThe Anatomical Record, EarlyView.
Abstract Teleocichla comprises small cichlids that inhabit the rapid streams of Amazonian rivers; however, there has been limited research on their encephalon morphology. This study examined the neuroanatomy of four species, focusing on volumetric measurements of their encephalon subregions, and providing a histological description of the encephalon of
Renan Leão‐Reis   +4 more
wiley   +1 more source

Cryptobia iubilans in Cichlids

open access: yesEDIS, 2014
After many years of diagnostics at the University of Florida and at other laboratories around the country, it appears that Cryptobia iubilans is not uncommon among cichlids, and that environmental and other factors determine the extent of disease. This revised 3-page fact sheet was written by Ruth Francis-Floyd and Roy Yanong, and published by the UF ...
Ruth Francis-Floyd, Roy Yanong
openaire   +5 more sources

Mortality estimates of the four major Cichlid fishes of Umuoseriche Lake, Imo State, Nigeria [PDF]

open access: yes, 2004
The mortality of the four major cichlid fishes of Urnuoseriche Lake is the subject of this paper. Mortality I as estimated by five techniques, vary amongst the cichlid fishes, viz, Tilapia carbrae, Tilapia mariac, Tilapia zilli cend (hrornoditilapfa ...
Anene, Afamdi
core  

Automated Profiling of Social Behaviors to Assess the Genetic Basis of Evolution of Aggressive Behaviors in Astyanax mexicanus

open access: yesJournal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT Across the animal kingdom, social behaviors such as aggression are critical for survival and reproductive success. While there is significant variation in social behaviors within and between species, the genetic mechanisms underlying natural variation in social behaviors are poorly understood.
Renee Mapa   +5 more
wiley   +1 more source

Adaptive radiation of cichlid fish [PDF]

open access: yesCurrent Biology, 2007
I thank Karen Carleton and Martin Genner for helpful comments on an earlier version of the manuscript and Ad Konings for providing the photomontage.
openaire   +2 more sources

The opsin genes of amazonian cichlids [PDF]

open access: yesMolecular Ecology, 2017
AbstractVision is a critical sense for organismal survival with visual sensitivities strongly shaped by the environment. Some freshwater fishes with a Gondwanan origin are distributed in both South American rivers including the Amazon and African rivers and lakes. These different habitats likely required adaptations to murky and clear environments.
Escobar-Camacho, Daniel   +3 more
openaire   +3 more sources

Speciation with gene flow

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Biodiversity is threatened by human activities, with extinction debt accumulating rapidly. Many of these activities change the connectivity of populations, fragmenting existing population systems or bringing previously isolated populations or species into contact.
Zhiqin Long   +7 more
wiley   +1 more source

Maternal glucocorticoids have persistent effects on offspring social phenotype irrespective of opportunity for social buffering

open access: yesJournal of Animal Ecology, EarlyView.
This study tests whether early‐life maternal association buffers offspring from the effects of prenatal stress in a facultatively social lizard. Despite clear effects of maternal glucocorticoids on growth and social behaviour, social associations did not mitigate these effects, revealing limits to social buffering in this species.
Kirsty J. MacLeod   +4 more
wiley   +1 more source

Desert cichlids

open access: yesNatura
Cichlids were given their name by the French zoologist Charles Lucien Bonaparte (1803-1857), a nephew of Napoleon, who borrowed the term from the Greek κίχλη (kichle), a word that in origin had the broad meaning of “wrasse” (a fish) or “thrush” (a bird).
Giorgio Chiozzi, Livio Leoni
openaire   +1 more source

Strategic growth decisions in helper cichlids [PDF]

open access: yesProceedings of the Royal Society of London. Series B: Biological Sciences, 2004
Recently, it has been shown that group-living subordinate clownfish Amphiprion percula increase their growth rate after acquiring the dominant breeder male position in the group. Evidence was found for strategic growth adjustments of subordinate fishes depending on the threat of eviction, i.e.
Dik, Heg, Nicole, Bender, Ian, Hamilton
openaire   +2 more sources

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