Results 41 to 50 of about 228 (134)
Border Collision Bifurcations in a Generalized Model of Population Dynamics
Discrete Dynamics in Nature and Society, Volume 2016, Issue 1, 2016., 2016 We analyze the dynamics of a generalized discrete time population model of a two‐stage species with recruitment and capture. This generalization, which is inspired by other approaches and real data that one can find in literature, consists in considering no restriction for the value of the two key parameters appearing in the model, that is, the natural
Lilia M. Ladino +4 more
wiley +1 more source
Ecological Factors and Diversification among Neotropical Characiforms
International Journal of Ecology, Volume 2012, Issue 1, 2012., 2012 Morphological and DNA sequence data has been used to propose hypotheses of relationships within the Characiformes with minimal comparative discussion of causes underpinning the major intraordinal diversification patterns. We explore potential primary morphological factors controlling the early diversification process in some Neotropical characiforms as
Cástor Guisande +12 more
wiley +1 more source
People and Nature, Volume 8, Issue 3, Page 782-796, March 2026.Abstract Hydropower dams regulate water flows for millions of downstream inhabitants worldwide, altering water availability. Under a changing climate, flow control is often framed technically and politically as being essential for reducing drought and flood risks. However, it can also disrupt ecological flows, impact livelihoods and erode environmental
Laura Betancur‐Alarcón +4 more
wiley +1 more source
Dams effects on potamodromous Prochilodus magdalenae : evidence from endocrine response
, 2017 Background. Prochilodus magdalenae is a neotropical fish that synchronizes reproduction with flood river pulses. Methods. We used an endocrine method to test the influence of hydropeaking on hormone production related with reproduction.
De Fex-Wolf, Daniela +3 more
openaire +1 more source
Biota Colombiana, 2016 Between february and december of 2011 the fish communities of the ciénaga de Paredes, were studied by four samples in periods contrasting climates, station 1, corresponding to the inlet of the pipe Peruétano (BCP), station 2, Swamp Center (CC) and ...
Beatriz H. Mojica-Figueroa +1 more
doaj +1 more source
Water Resources Research, Volume 62, Issue 2, February 2026.Abstract Total Suspended Solids (TSS) significantly degrade water quality by reducing light penetration and oxygen availability, while facilitating the transport of toxic contaminants. Managing TSS in watersheds requires an understanding of both hydrological connectivity and pollutant dynamics; however, these efforts are significantly constrained by ...
Jesus Guzmán Pérez +2 more
wiley +1 more source
Aquaculture Research, Volume 2025, Issue 1, 2025.Milt cryopreservation facilitates native fish’s constant production of commercial interest. However, it can damage spermatozoa (sptz) due to the osmotic stress of diluents and low temperatures. This study compares spermatic quality in fresh (SF) and cryopreserved (CS) milt in B. amazonicus for 24 h, 1 month, and 3 months.
Owens José Barros-Barrios +4 more
wiley +1 more source
Reviews in Aquaculture, Volume 16, Issue 4, Page 1981-1995, September 2024.Abstract A healthy skeletal system is fundamental to fish welfare and performance and a key physiological feature of a robust fish. The presence of skeletal deformities in farmed salmonids is a persistent welfare problem in aquaculture, and one which threatens to impede industry growth.
Brianne A. Lyall +7 more
wiley +1 more source
Management of the first food of bocachico (Prochilodus magdalenae)
Revista MVZ Córdoba, 2003 In the Centro de Investigación Piscícola de la Universidad de Córdoba were two experiments. In the first experiment was conducted to investigate the effects of different preys to first feeding on bocachico (Prochilodus magdalenae) larviculture. The onset feeding bocachico post-larvae stocked into aquarium at density 50/L, were fed at 5 Prey/mL during ...
Atencio-García, Víctor +3 more
openaire +1 more source
Environmental Control of Oogenesis in a Potamodromous Neotropical Fish (Prochilodus Magdalenae)
The seasonal reproduction of teleost fish is modulated by the interaction between environmental factors, water physicochemistry, and their physiology. This study focused on the modulation of oogenesis by environmental cues in the Neotropical potamodromous fish Prochilodus magdalenae (bocachico).
Hernández-hernández, Eduardo Antonio +4 more
openaire +2 more sources