Results 91 to 100 of about 26,825 (204)

Reproductive biology of Poecilia sphenops Valenciennes, 1846 (Cyprinidontiformes: Poeciliidae) at the Emiliano Zapata Reservoir in Morelos, Mexico

open access: yesNeotropical Ichthyology
Poecilia sphenops is a native species recently recorded in the Balsas basin and the Amacuzac River in Morelos (Mexico), in which it is abundant and widely distributed. This study analyzed some aspects of the reproductive biology of Poecilia sphenops from
José L. Gómez-Márquez   +2 more
doaj   +1 more source

Extremophile Poeciliidae:multivariate insights into the complexity of speciation along replicated ecological gradients [PDF]

open access: yes, 2016
BackgroundReplicate population pairs that diverge in response to similar selective regimes allow for an investigation of (a) whether phenotypic traits diverge in a similar and predictable fashion, (b) whether there is gradual variation in phenotypic ...
Doumas, Tess   +7 more
core   +5 more sources

The Statistical Analysis of Behavioural Latency Measures [PDF]

open access: yes, 1997
This article concerns two important problems with the statistical analysis of behavioural latency measures: they typically have severely skewed distributions, and are often censored (truncated).
Budaev, Dr. Sergey
core  

EFECTOS ECOTOXICOLOGICOS DEL CARTAP SOBRE POECILIA RETICULATA "GUPPY'' (POECILIDAE) Y PARACHEIRODON INNESI "NEON TETRA'' (CHARACIDAE) ECOTOXICOLOGICAL EFFECTS OF CARTAP ON POECILIA RETICULATA "GUPPY'' (POECILIDAE) AND PARACHEIRODON INNESI "NEON TETRA'' (CHARACIDAE)

open access: yesGayana, 2007
Se evaluó el impacto ecotoxicológico del insecticida carbámico cartap (1,3 di (carbamoytio)-2-dimetiloaminopropano) usado para el control de plagas agrícolas y como molusquicida de vectores de importancia en Salud Pública, sobre dos especies de peces del
Jose Iannacone   +2 more
doaj  

Environmental, social, morphological, and behavioral constraints on opportunistic multiple paternity [PDF]

open access: yes, 2014
Peer ...
Blumstein, Daniel T.   +2 more
core   +1 more source

Demasculinization of male guppies increases resistance to a common and harmful ectoparasite [PDF]

open access: yes, 2015
Parasites are detrimental to host fitness and therefore should strongly select for host defence mechanisms. Yet, hosts vary considerably in their observed parasite loads. One notable source of inter-individual variation in parasitism is host sex.
ADAM R. REDDON   +13 more
core   +1 more source

Trichodina nobilis Chen, 1963 and Trichodina reticulata Hirschmann et Partsch, 1955 from ornamental freshwater fishes in Brazil

open access: yesBrazilian Journal of Biology
In the present work Trichodina reticulata and T. nobilis (Ciliophora: Trichodinidae) are morphologically characterised from ornamental freshwater fish culture in the State of Santa Catarina, Brazil.
ML Martins   +3 more
doaj   +1 more source

Investigations into the bioavailability of manufactured nanoparticles in fish [PDF]

open access: yes, 2013
The field of nanotoxicology has emerged as a discipline in parallel with the rapid expansion of nanotechnology and the use of nanomaterials in modern life.
Goodhead, Rhys Michael
core  

Kin Recognition in a Clonal Fish,Poecilia Formosa

open access: yesPLOS ONE, 2016
AbstractRelatedness strongly influences social behaviors in a wide variety of species. For most species, the highest typical degree of relatedness is between full siblings with 50% shared genes. However, this is poorly understood in species with unusually high relatedness between individuals: clonal organisms. Although there has been some investigation
Amber M. Makowicz   +3 more
openaire   +7 more sources

An annotated distributional checklist of exotic freshwater fishes from the Baja California Peninsula, Mexico Lista comentada sobre la distribución de peces dulceacuícolas exóticos de la península de Baja California, México

open access: yesRevista Mexicana de Biodiversidad, 2012
We documented the distributional status of 27 exotic fish species in the inland waters of the Baja California Peninsula, Mexico, based on voucher specimens collected from 122 sites between 1977 and 2010, and on published records.
Gorgonio Ruiz-Campos   +4 more
doaj  

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