Results 51 to 60 of about 4,731 (218)

Oocyte Development and Fecundity Strategy in Cage‐Reared Pearlspot, Etroplus suratensis (Cichlidae): A Histological and Statistical Approach

Journal of Applied Ichthyology, Volume 2026, Issue 1, 2026.
The progression of oocyte development and patterns of oocyte recruitment are key indicators of reproductive strategy in fishes. The present study examines, for the first time, the fecundity strategy of cage‐reared Etroplus suratensis in Vembanad Lake using four indicators: (a) the oocyte size frequency distribution across ovarian reproductive phases ...
Mohammad Saddam Hussain, Mahadevan Harikrishnan, Betsee Thomas, P. V. Keerthana, A. R. Nikhila Khanna, Haritha Haridas, Dinesh Yadav, Gournaga Biswas   +7 more
wiley   +1 more source

Ecto- and endo-parasitic monogeneans (Platyhelminthes) on cultured freshwater exotic fish species in the state of Morelos, South-Central Mexico

ZooKeys, 2018
An extensive parasitological study of 365 freshwater exotic fish specimens belonging to 13 species of seven families (Cichlidae, Cyprinidae, Osphronemidae, Pangasidae, Poeciliidae, Characidae, and Loricariidae) collected from 31 Aquaculture Production ...
Edgar F. Mendoza-Franco, Juan Manuel Caspeta-Mandujano, Marina Tapia Osorio   +2 more
doaj   +3 more sources

The Effects of Diet on the Expression of Male Dimorphic Colouration and Weaponry in a Species of Neotropical Katydid

Ecology and Evolution, Volume 15, Issue 12, December 2025.
Male alternative reproductive tactics are widespread, often involving distinct morphs influenced by genetics or the environment. This study confirms two male morphs in the bush cricket Satizabalus jorgevargasi—larger, more colourful majors and smaller, duller minors—and tests how diet affects their development.
Lewis B. Holmes, Carl D. Soulsbury, Fernando Montealegre‐Z   +2 more
wiley   +1 more source

Vertical and temporal niche partitioning in Amazonian butterflies: implications for the evolution of thermal tolerance

Oikos, Volume 2025, Issue 12, December 2025.
Closely related species living in sympatry are often partitioned into divergent ecological niches. Such specialization can be enabled by the evolution of divergent traits enhancing adaptation to different niches. In this study, we investigate the partitioning of closely related butterfly species into different forest strata and daily activity time and ...
Titouan Bouinier, Charline Smadi, Violaine Llaurens   +2 more
wiley   +1 more source

A new species of Gymnogeophagus from the río Negro and río Tacuarí basins, Uruguay (Teleostei: Perciformes)

Neotropical Ichthyology
The new cichlid species Gymnogeophagus tiraparae is described from the río Negro and río Tacuarí basins (Uruguay). The new species is distinguished from other Gymnogeophagus species by the unique presence of the following characters: adipose hump on head
Iván González-Bergonzoni, Marcelo Loureiro, Sebastián Oviedo   +2 more
doaj   +1 more source

Biologia reprodutiva de Heros efasciatus Heckel, 1840 (Pisces, Cichlidae) na Reserva de Desenvolvimento Sustentável Amanã-AM, visando seu manejo sustentável Reproductive biology of Heros efasciatus Heckel,1840 (Pisces, Cichlidae) in the Amanã Sustainable Reserve (Amazonas, Brazil), aiming at sustainable management of the species

Acta Amazonica, 2010
Com o principal objetivo de fornecer ferramentas para auxiliar na implementação do manejo sustentável de peixes ornamentais na Reserva de Desenvolvimento Sustentável Amanã, Amazonas, foi realizado o estudo da biologia reprodutiva de Heros efasciatus ...
Jana Menegassi del Favero, Paulo dos Santos Pompeu, Ana Carolina Prado-Valladares   +2 more
doaj   +1 more source

Sensitivity of Cichlasoma facetum (Cichlidae, Pisces) to Metals

Bulletin of Environmental Contamination and Toxicology, 2004
Although most of the existent information regarding the sensitivity of fish to pollutants has aimed to the study of Holartic species (Ramamoorthy and Baddaloo 1995), contributions on organisms from other types of ecological communities belonging to Neotropical environments have been recently undertaken considering native and introduced species ...
Bulus Rossini, Gustavo Daniel, Ronco, Alicia Estela   +1 more
openaire   +3 more sources

Hematological parameters of Iranian cichlid Iranocichla hormuzensis: Coad, 1982 (Perciformes) in Mehran River

Anais da Academia Brasileira de Ciências, 2012
This study describes the hematological parameters in Iranocichla hormuzensis, an Iranian freshwater cichlid important as ornamental and food fish. Forty fish were captured with seine net at Mehran river Hormozgan province, Iran.
Ehsan Daneshvar, Mahsa Y. Ardestani, Salar Dorafshan, Mauricio L. Martins   +3 more
doaj  

Caracterización hematológica de Astronotus ocellatus (Cichliformes: Cichlidae)

Revista de Investigaciones Veterinarias del Perú, 2020
El estudio tuvo como objetivo caracterizar los parámetros hematológicos de Astronotus ocellatus y determinar posibles correlaciones entre variables. Se colectaron muestras de sangre de 15 especímenes (peso: 109.43 ± 22.9 g; longitud total: 15.43 ± 1.28 cm), mantenidos en tanques de concreto.
Anai Gonzales Flores, Katty Huanuiri, Jorge Vasquez, Franco Guerra, Christian Fernández-Méndez   +4 more
openaire   +1 more source

FAUNA HELMINTOLOGICA DE PECES DULCEACUICOLAS DE TABASCO. ESTUDIO PREMILIMAR

Ecosistemas y Recursos Agropecuarios, 2014
en muestreos realizados en febrero, abril y julio de 1983, en las lagunas el chiribital y el Horizonte, cercanas a la Ciudad de Villahermosa, Tabasco, se analizaron 74 peces pertenecientes a las familias Lepisosteidae (11 ejemplares) y Cichlidae (63 ...
David Osorio Sarabia, Raul Pineda López, Guillermo Salgado Maldonado   +2 more
doaj   +1 more source