Results 31 to 40 of about 299,505 (285)

Embryonic and larval development of the topmouth gudgeon, Pseudorasbora parva (Teleostei: Cyprinidae)

open access: yesZoologia (Curitiba), 2018
The topmouth gudgeon, Pseudorasbora parva (Temminck & Schlegel, 1842), is a small cyprinid fish that inhabits the littoral zones of freshwater habitats throughout Asia and Europe.
Dongmei Zhu   +4 more
doaj   +1 more source

Larval Development: Making Ants into Soldiers [PDF]

open access: yesCurrent Biology, 2019
Many ant species have complex caste systems, with reproductive queens and sterile workers, which often play distinct roles in the maintenance and defense of the colony. A new study sheds light on how these worker caste systems evolved and the mechanisms by which totipotent larvae give rise to the alternative adult castes.
openaire   +2 more sources

Ontogenesis and functional morphology of the digestive system of the freshwater prawn, Macrobrachium amazonicum (Decapoda: Palaemonidae)

open access: yesZoologia (Curitiba), 2011
The appropriate feeding regime for larvae and post-larvae of crustacean decapods is essential for successful larval culture. Reports on the development and morphology of the mouthparts and foregut of these crustaceans have aided in the selection of ...
Luciano D. Queiroz   +2 more
doaj   +1 more source

Physical and Chemical Barriers in the Larval Midgut Confer Developmental Resistance to Virus Infection in Drosophila

open access: yesViruses, 2021
Insects can become lethally infected by the oral intake of a number of insect-specific viruses. Virus infection commonly occurs in larvae, given their active feeding behaviour; however, older larvae often become resistant to oral viral infections.
Simon Villegas-Ospina   +2 more
doaj   +1 more source

The labial gene is required to terminate proliferation of identified neuroblasts in postembryonic development of the Drosophila brain [PDF]

open access: yes, 2012
The developing brain of Drosophila has become a useful model for studying the molecular genetic mechanisms that give rise to the complex neuronal arrays that characterize higher brains in other animals including mammals.
Bello, B. C., Kuert, P. A., Reichert, H.
core   +3 more sources

Post‐introduction evolution in the biological control agent Longitarsus jacobaeae (Coleoptera: Chrysomelidae)

open access: yesEvolutionary Applications, 2012
Rapid evolution has rarely been assessed in biological control systems despite the similarity with biological invasions, which are widely used as model systems. We assessed post‐introduction climatic adaptation in a population of Longitarsus jacobaeae, a
Marianna Szűcs   +3 more
doaj   +1 more source

The effect of salinity on larval development of Uca tangeri (Eydoux, 1835) (Brachyura: Ocypodidae) and new findings of the zoeal morphology

open access: yesScientia Marina, 2009
In order to evaluate their tolerance to low salinities, zoeae of the fiddler crab Uca tangeri from the Rio San Pedro population (southwestern Spain) were reared in the laboratory at 20ºC and at three salinities (16, 24 and 32).
Eduardo D. Spivak, José A. Cuesta
doaj   +1 more source

Growth and the expression of alternative life cycles in the salamander \u3ci\u3eAmbystoma talpoideum\u3c/i\u3e (Caudata: Ambystomatidae) [PDF]

open access: yes, 2003
Complex life cycles (CLCs) contain larval and adult phases that are morphologically and ecologically distinct. Simple life cycles (SLCs) have evolved from CLCs repeatedly in a wide variety of lineages but the processes that may underlie the transition ...
Ryan, Travis J, Semlitsch, Raymond D.
core   +1 more source

The effect of a 24-hour photoperiod on the survival, growth and swim bladder inflation of pre-flexion yellowfin tuna (Thunnus albacares) larvae [PDF]

open access: yes, 2011
The effects of two different continuous photoperiod regimes on survival, growth and swim bladder inflation of pre-flexion yellowfin tuna (Thunnus albacares) larvae were investigated. Each photoperiod regime was tested twice with a different larval cohort
A. McIntyre   +43 more
core   +2 more sources

Naked cuticle is essential for Drosophila wing development beyond Wingless signaling

open access: yesFEBS Open Bio, EarlyView.
Naked cuticle (Nkd), a Wnt signaling inhibitor, assumes extensive roles in Drosophila wing development. Overexpressing Nkd causes smaller, crumpled wings, while also perturbing multiple signaling pathways and developmental genes. A specific region (R1S) is critical for Nkd's function as a signaling integrator, offering new insights for studying its ...
Rui Wang, Ping Wang
wiley   +1 more source

Home - About - Disclaimer - Privacy