Results 21 to 30 of about 269 (156)

Effect of temperature on the growth performance, haematological properties and histomorphology of gill, intestine and liver tissues in juvenile butter catfish Ompok bimaculatus

Aquaculture, Fish and Fisheries, Volume 2, Issue 4, Page 277-286, August 2022., 2022
A 90‐day aquarium trial was conducted to evaluate the effect of temperature on the growth, blood chemistry and histology of vital organs in juvenile Ompok bimaculatus. Fish reared at 30℃ showed significantly higher growth performances, specific growth rate and haemoglobin and white blood cell counts in comparison to the control group at 25℃. Fish at 30℃
Md. Rashedul Islam, Mohammad Amzad Hossain, Farjana Afrose, Nirmal Chandra Roy, Mohammed Mahbub Iqbal   +4 more
wiley   +1 more source

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, Robert Cerny, P. Eckhard Witten   +2 more
wiley   +1 more source

Unraveling the dietary diversity of Neotropical top predators using scat DNA metabarcoding: A case study on the elusive Giant Otter

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, Marie Aucourd, Valérie Troispoux, Sébastien Brosse, Jérôme Murienne, Raphaël Covain, Pierre‐Yves Le Bail, Jean Olivier, Niklas Tysklind, Maxime Galan   +9 more
wiley   +1 more source

Predation on pirarucu larvae by opportunistic fish species

Acta Amazonica, 2022
One of the constraints in pirarucu, Arapaima gigas farming is the reproduction in captivity, due to inconsistent number of spawning events per reproductive cycle, thus, unreliable availability of juvenile fish. This is a first-hand report on predation of
Adriana Ferreira LIMA, Anderson Guilherme Pereira dos REIS, Alberto AKAMA, Patricia Oliveira MACIEL-HONDA   +3 more
doaj   +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, Rosa Zupa, Constantinos C. Mylonas, Letizia Passantino   +3 more
wiley   +1 more source

Oocyte adhesiveness and embryonic development ofAstyanax bimaculatus(Linnaeus, 1758) (Pisces: Characidae)

Zygote, 2012
SummaryThis study shows for the first time the presence of a jelly coat on oocytes of neotropical Characiformes fish. This structure could be responsible for the adhesiveness ofAstyanax bimaculatusoocytes, a species widely distributed in South America including in the São Francisco River basin in Brazil. Adult specimens ofA.
André Alberto, Weber, Fábio Pereira, Arantes, Yoshimi, Sato, Elizete, Rizzo, Nilo, Bazzoli   +4 more
  +8 more sources

Gonadal development and reproductive period of the characin Astyanax aff. bimaculatus (Characiformes: Characidae) in a tropical reservoir in southeastern Brazil [PDF]

Zoologia (Curitiba), 2019
The gonadal development of the characin Astyanax aff. bimaculatus from Funil Reservoir, an impoundment in the middle reaches of the Paraiba do Sul River in southeastern Brazil was analysed through histological, histochemical and histometric techniques ...
Francisco G. Araújo, Aparecida A. Nascimento, Iracema D. Gomes, Armando Sales, Beatriz A. Chagas de Oliveira   +4 more
doaj   +3 more sources

Níveis de energia digestível e proteína bruta em rações para alevinos de lambari tambiú Dietary levels of digestible energy and crude protein for lambari tambiú fingerlings

Revista Brasileira de Zootecnia, 2006
Com o objetivo de determinar os níveis de energia digestível (ED) em função do nível de proteína bruta (PB) da ração para alevinos de lambari tambiú (Astyanax bimaculatus), foram utilizados 600 peixes com 1,30 ± 0,01 g, distribuídos em 40 aquários
Jorge Luiz Vieira Cotan, Eduardo Arruda Teixeira Lanna, Marcos Antonio Delmondes Bomfim, Juarez Lopes Donzele, Felipe Barbosa Ribeiro, Moacyr Antonio Serafini   +5 more
doaj   +1 more source

Diet and dietary overlap of three sympatric fish species in lakes of the upper Paraná River floodplain

Brazilian Archives of Biology and Technology, 1999
For a dietary study, specimens of Astyanax bimaculatus, Astyanax schubarti, and Moenkhausia intermedia were caught monthly with seines-nets in six lakes (Pau Veio, Porto Rico, Três Amigos, Mutum, Pontal, and Canal do Meio), on the floodplain of the Upper
Karla Danielle Gaspar da Luz, Edson Kiyoshi Okada   +1 more
doaj   +1 more source

Comentários sobre a distribuição geográfica de Astyanax altiparanae Garutti & Britski, 2000 (Osteichthyes, Characidae) na bacia do rio Iguaçu

Acta Scientiarum: Biological Sciences, 2008
Garutti (1995) fez a revisão de algumas espécies de Astyanax (Osteichthyes, Characidae) e aquela, conhecida como “tambiú” na bacia do alto rio Paraná, anteriormente identificada como Astyanax bimaculatus, foi considerada nova e posteriormente descrita ...
Weferson Júnio da Graça, Carla Simone Pavanelli   +1 more
doaj   +1 more source