Results 21 to 30 of about 6,231 (157)
The conundrum of pharyngeal teeth origin: the role of germ layers, pouches, and gill slits
Biological Reviews, Volume 97, Issue 1, Page 414-447, February 2022., 2022 ABSTRACT There are several competing hypotheses on tooth origins, with discussions eventually settling in favour of an ‘outside‐in’ scenario, in which internal odontodes (teeth) derived from external odontodes (skin denticles) in jawless vertebrates. The evolution of oral teeth from skin denticles can be intuitively understood from their location at ...
Ann Huysseune +2 more
wiley +1 more source
Environmental DNA, Volume 3, Issue 5, Page 889-900, September 2021., 2021 A multi‐marker scat DNA metabarcoding approach was used to examine the dietary diversity of the world's largest and rarest otter, the iconic giant otter (Pteronura brasiliensis) from fecal DNA. The combined use of highly discriminant markers (COI and 12S) and of local reference databases of DNA barcodes offered a high accuracy of taxonomic assignments ...
Erwan Quéméré +9 more
wiley +1 more source
Atresia of ovarian follicles in fishes, and implications and uses in aquaculture and fisheries
Journal of Fish Diseases, Volume 44, Issue 9, Page 1271-1291, September 2021., 2021 Abstract Atresia of ovarian follicles, that is the degenerative process of germ cells and their associated somatic cells, is a complex process involving apoptosis, autophagy and heterophagy. Follicular atresia is a normal component of fish oogenesis and it is observed throughout the ovarian cycle, although it is more frequent in regressing ovaries ...
Aldo Corriero +3 more
wiley +1 more source
Female mating preferences in blind cave tetras Astyanax fasciatus (Characidae, Teleostei). [PDF]
, 2006 The Mexican tetra Astyanax fasciatus has evolved a variety of more or less color- and eyeless cave populations. Here we examined the evolution of the female preference for large male body size within different populations of this species, either surface-
Rohde, Matthias +4 more
core +1 more source
Phase Shifts of the Circadian Locomotor Rhythm Induced by Pigment-Dispersing Factor in the Cricket Gryllus bimaculatus [PDF]
, 2003 Pigment-dispersing factors (PDFs) are octadeca-peptides widely distributed in insect optic lobes and brain. In this study, we have purified PDF and determined its amino acid sequence in the cricket Gryllus bimaculatus.
Fujisawa, Yuko +4 more
core +1 more source
Enhanced flow sensing with interfacial microstructures
Biosurface and Biotribology, Volume 6, Issue 1, Page 12-19, March 2020., 2020 Biological flow receptors show astonishing performance and are used as models for the design of novel flow sensors. However, the functional importance of interfacial microstructures is seldom discussed in previous review papers. Herein, this review summarises the underlying biomechanical principles in the biological flow receptors and describes the ...
Yonggang Jiang +5 more
wiley +1 more source
Anais da Academia Brasileira de Ciências, 2021 The present study is the first report of Spiroxys larvae parasitizing stomach and intestine of three fish species in stream of Caatinga domain, Northeast, Brazil.
MARIA NAIANE M. DE CARVALHO +3 more
doaj +1 more source
Zoologia (Curitiba), 2014 The aim of this study was to assess the ecomorphological patterns and diet of four Characiformes fish species in a poorly physically structured tropical reservoir.
Débora de S. Silva-Camacho +3 more
doaj +1 more source
Revista Brasileira de Zootecnia, 2005 Este trabalho foi realizado com o objetivo de determinar o nível ideal de arraçoamento, em porcentagem do peso vivo, para alevinos de lambari-do-rabo-amarelo (Astyanax bimaculatus).
Fábio Meurer +4 more
doaj +1 more source
DESENVOLVIMENTO DE UM PROTOCOLO DE FEMINIZAÇÃO EFICIENTE PARA O LAMBARI ASTYANAX BIMACULATUS DEVELOPMENT OF AN EFFICIENT FEMINIZATION PROTOCOL FOR LAMBARI ASTYANAX BIMACULATUS [PDF]
, 2020 Fêmeas de Astyanax bimaculatus possuem melhores índices zootécnicos quandocomparados aos machos da mesma espécie. O objetivo deste trabalho foi desenvolver umprotocolo eficiente de feminização do lambari-do-rabo-amarelo Astyanax bimaculatus,visando a ...
Artur de Lima PRETO +3 more
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