Results 81 to 90 of about 39,146 (312)

Changes in the diet of predatory ribbonfish Trichiurus lepturus Linnaeus,   1758 with increasing body size along Chennai coast [PDF]

open access: yes, 2017
In recent years, it has been recognised that predatory fishes are rapidly declining in marine habitats. Hence, gathering information on biological characteristics such as dietary dynamics of predatory fishes has assumed importance.
Gomathy, S, Vivekanandan, E
core   +1 more source

Seasonal Differences in Fish Community Structure in the Upper Yangtze River Based on eDNA Metabarcoding: A Multi‐Dimensional Analysis

open access: yesEcology and Evolution, Volume 15, Issue 10, October 2025.
This study used eDNA metabarcoding to detect seasonal fish diversity in the upper Yangtze River, analyzing species composition and functional groups. Multiple diversity indices (α‐diversity, functional, taxonomic, and phylogenetic diversity) were employed to explore seasonal changes in fish communities.
Yixiao Li   +7 more
wiley   +1 more source

An analysis of Nigerian freshwater fishes: those under threat and conservation options [PDF]

open access: yes, 2005
The study assessed qualitatively the threat status of all nigerian freshwater fishes using such criteria as rarity, size at maturity, mode of reproduction, human population density, habitat degradation, pollution and range of each species among others ...
Bankole, N.O., Olaosebikan, B.D.
core  

European sea bass (Dicentrarchus labrax) skin and scale transcriptomes [PDF]

open access: yes, 2017
Fish skin and their appendages, the mineralized scales, are important organs for protection and homeostasis, but little is known about their specific transcript or protein repertoire.
Pinto, Patricia IS   +2 more
core   +1 more source

Parasites Are Paramount: Vertical Trophic Positions of Parasitic Catfishes in a Tropical River Food Web

open access: yesEcology of Freshwater Fish, Volume 34, Issue 4, October 2025.
ABSTRACT The Neotropical catfish family Trichomycteridae contains parasitic fishes that include scale and mucus feeders (subfamily Stegophilinae) and blood feeders (i.e., ‘candirus’, subfamily Vandelliinae). The influence of parasitic catfishes on food web dynamics is unknown.
Carmen G. Montaña   +7 more
wiley   +1 more source

Disentangling the Effects of Biotic and Abiotic Dimensions of Ecological Opportunity on Individual Trophic Trait Variation

open access: yesMolecular Ecology, Volume 34, Issue 20, October 2025.
ABSTRACT Within‐species individual trait variation (ITV) plays a critical role in ecological and evolutionary dynamics by influencing community structure, ecosystem functioning, and individual fitness. While the role of the biotic dimension of ecological opportunity (e.g., interspecific competition, prey availability) in shaping trophic ITV is now well
Kurt Villsen   +8 more
wiley   +1 more source

Branquiocráneo de la mojarra de mar, Diapterus auratus Ranzani (Pisces: Gerreidae)

open access: yesEcosistemas y Recursos Agropecuarios, 2014
El branquiocráneo de la mojarra Diapterus auratus Ranzani está constituído bajo el mismo patro estructural del orden Perciformes. Para obtener el articulo completo pueden contactar al Editor de la Revista Ecosistemas y Recursos Agropecuarios en el ...
Abraham Kobelkowsky D.   +1 more
doaj   +1 more source

Environmental DNA Reveals the Fish Community Structure Exhibited Instability and Trend of Miniaturization in the Xijiang River Basin of the Guizhou

open access: yesEcology and Evolution, Volume 15, Issue 9, September 2025.
Monitoring of fish communities is of great significance for the management and sustainability of river ecosystems. Environmental DNA (eDNA) metabarcoding technology has been demonstrated to be a highly sensitive biomonitoring tool. Nevertheless, it has seldom been tested in mountainous rivers within the geographically complex Karst region.
Xiuhui Ma   +5 more
wiley   +1 more source

Geographical distribution of protozoan and metazoan parasites of farmed Nile tilapia Oreochromis niloticus (L.) (Perciformes: Cichlidae) in Yucatán, México

open access: yesParasites & Vectors, 2016
In Yucatán State, southern México, as in many other parts of the world where tilapia has been introduced for aquaculture, the deficient application of management measures has led to the establishment of non-native parasites.
A. Paredes-Trujillo   +4 more
semanticscholar   +1 more source

Metabarcoding Primers for Indo‐Pacific Fishes

open access: yesEnvironmental DNA, Volume 7, Issue 5, September–October 2025.
We compared the relative performance of five metabarcoding primers (Berry 16S, Riaz 12S, MiFish E 12S, MiFish U 12S, and Leray CO1) to recover Indo‐Pacific fish taxa. We tested the primers using template DNA from three types of samples: (1) mock communities of tissue‐based DNA extractions, (2) a semi‐natural aquarium tank, and (3) a tropical coral reef
Van Wishingrad   +7 more
wiley   +1 more source

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