Results 61 to 70 of about 26,825 (204)

Prey body size mediates the predation risk associated with being "odd" [PDF]

, 2014
Despite selection pressures on prey animals to maintain phenotypically homogeneous groups, variation in phenotype within animal groups is commonly observed.
Downing, Beatrice, Morrell, Lesley J., Rodgers, Gwendolen M.   +2 more
core   +2 more sources

First attempt at using a synthetic diet in short‐lived killifish, a vertebrate model of ageing

Journal of Fish Biology, EarlyView.
Abstract Diet standardization of model organisms is crucial for experimental consistency and repeatability in laboratory research, yet laboratory fish often lack species‐specific, open‐formula standardized diets. This study aims to address this gap by testing the effect of macronutrient content on the performance of Nothobranchius furzeri, an ...
Jakub Žák, Milan Vrtílek
wiley   +1 more source

The molecular basis of color vision in colorful fish: Four Long Wave-Sensitive (LWS) opsins in guppies (Poecilia reticulata) are defined by amino acid substitutions at key functional sites

BMC Evolutionary Biology, 2008
Background Comparisons of functionally important changes at the molecular level in model systems have identified key adaptations driving isolation and speciation.
Ward Pam R, Polack Megan D, Owens Greg L, Laver Chris RJ, Dick Kevin J, Churcher Allison M, Ward Matthew N, Breden Felix, Taylor John S   +8 more
doaj   +1 more source

Association patterns and foraging behaviour in natural and artificial guppy shoals [PDF]

, 2008
Animal groups are often nonrandom assemblages of individuals that tend to be assorted by factors such as sex, body size, relatedness and familiarity.
Chapman, Ben B., Croft, Darren P., Dyer, John R. G., Dyer, John R.G., Kelley, Jennifer L., Krause, Jens, Laland, Kevin N., Morrell, Lesley J.   +7 more
core   +1 more source

Nonapeptide cell size differs between male morphs of the West African cichlid, Pelvicachromis pulcher

Journal of Fish Biology, EarlyView.
Abstract Alternative male morphs are found in many species of fishes. These morphs often differ in suites of social behaviours, such as aggression and territoriality, associated with alternative reproductive tactics. Such consistent morph‐typical behavioural profiles suggest common differences in underlying neuroendocrine mechanisms.
Adam R. Reddon, Douglas R. Wylie, Peter L. Hurd   +2 more
wiley   +1 more source

Nuevo híbrido natural, Poecilia mexicana X P. latipunctata, Del Rio Tamesi, Tamaulipas, México (Pieces: Poeciliidae)

Ecosistemas y Recursos Agropecuarios, 2014
Se describe un pez pecilido híbrido, Poecilia mexicana X P. latipunctaa, que es el primero de dicha combinación. Para obtener el articulo completo pueden contactar al Editor de la Revista Ecosistemas y Recursos Agropecuarios en el siguiente correo ...
Salvador Contreras Balderas
doaj   +1 more source

Size‐selective mortality evolutionarily alters collective behaviour in response to predation risk in a zebrafish (Danio rerio) harvest‐induced selection model

Journal of Fish Biology, EarlyView.
Abstract Intensive multigenerational size‐selective mortality has been found to alter collective properties like shoaling via evolutionary adaptations of individual‐level behavioural traits. For example, experimental populations of zebrafish (Danio rerio) experiencing intensive large size‐selective mortality over multiple generations developed less ...
Tamal Roy, Daniel João Costa Pereira de Faria, Robert Arlinghaus   +2 more
wiley   +1 more source

Contaminação das águas pelo zinco: a dureza da água como um fator de modificação da toxicidade do zinco a peixes [PDF]

Revista DAE, 1986
O presente trabalho teve como objetivo estudar a influência das variáveis físico-químicas tais como: pH, dureza total e alcalinidade total da água na toxicidade do zinco para "guarus", Poecilia reticulata.
Eloísa Pozzi Gianotti
doaj  

PENGARUH AKLIMATISASI KADAR GARAM TERHADAP NILAI KEMATIAN DAN TINGKAH LAKU IKAN GUPPY (POECILIA RETICULATA) SEBAGAI PENGGANTI UMPAN IKAN CAKALANG (Katsuwonus Pelamis)

Jurnal Teknologi Perikanan dan Kelautan, 2017
Aklimatisasi merupakan suatu upaya penyesuaian fisiologis atau adaptasi dari suatu organisme terhadap suatu lingkungan baru yang akan dimasukinya.  Penelitian ini mengamati proses aklimatisasi kadar garam pada ikan guppy (Poecilia reticulata).
Muhammad Zainuddin Lubis, Sri Pujiyati
doaj   +1 more source

Ovicidal toxicity of plant essential oils and their major constituents against two mosquito vectors and their non-target aquatic predators

Scientific Reports, 2023
Plant essential oil (EO) is a natural alternative to synthetic chemical insecticides for mosquito control. EOs from Citrus aurantium L., Cymbopogon citratus (Stapf.), and Cinnamomum verum (J.
Tanapoom Moungthipmalai, Cheepchanok Puwanard, Jirapon Aungtikun, Sirawut Sittichok, Mayura Soonwera   +4 more
doaj   +1 more source