Results 31 to 40 of about 2,343 (186)

Phylogenetic relationships of freshwater fishes of the genus Capoeta (Actinopterygii, Cyprinidae) in Iran [PDF]

open access: yesEcology and Evolution, 2016
AbstractThe Middle East contains a great diversity of Capoeta species, but their taxonomy remains poorly described. We used mitochondrial history to examine diversity of the algae‐scraping cyprinid Capoeta in Iran, applying the species‐delimiting approaches General Mixed Yule‐Coalescent (GMYC) and Poisson Tree Process (PTP) as well as haplotype network
Hamid Reza Ghanavi   +2 more
openaire   +4 more sources

Feeding habit and diet composition of Glossogobius aureus Akihito & Meguro, 1975 in the Vietnamese Mekong Delta

open access: yesEgyptian Journal of Aquatic Research, 2023
Glossogobius aureus (Gobiiformes: Gobiidae) is a target fish and widely distributed in the Mekong Delta, from fresh to brackish waters. However, knowledge on its food and feeding ecology is scarce.
Gieo Hoang Phan   +5 more
doaj  

The current status of the Adriatic sea fish biodiversity

open access: yesFrontiers in Marine Science, 2015
The marine biodiversity of the Mediterranean Sea is nowadays facing substantial structural changes in flora and fauna. Such changes were observed in the Adriatic Sea as well.
Jakov Dulčić, Lovrenc Lipej
doaj   +1 more source

Preferential accumulation of sex and Bs chromosomes in biarmed karyotypes by meiotic drive and rates of chromosomal changes in fishes

open access: yesAnais da Academia Brasileira de Ciências, 2014
Mechanisms of accumulation based on typical centromeric drive or of chromosomes carrying pericentric inversions are adjusted to the general karyotype differentiation in the principal Actinopterygii orders. Here, we show that meiotic drive in fish is also
WAGNER F. MOLINA   +3 more
doaj   +1 more source

Complete mitochondrial genome of Korean endemic species, Iksookimia yongdokensis (Actinopterygii, Cypriniformes, Cobitidae)

open access: yesMitochondrial DNA. Part B. Resources, 2020
Iksookimia yongdokensis (Actinopterygii, Cypriniformes, Cobitidae) is known as endemic freshwater fish species in Korea. The total length of I. yongdokensis mitogenome is 16,640 bp, consisting of 13 protein-coding genes (PCGs), 22 tRNAs, 2 rRNAs, and 1 ...
Philjae Kim, Jeong-Ho Han, Seung Lak An
doaj   +1 more source

First record of Nubensia nubens (Edwards, 1929) (Diptera: Chironomidae) for Bulgaria

open access: yesCHIRONOMUS Journal of Chironomidae Research, 2020
Nubensia nubens (Edwards 1929) is reported for the first time in Bulgaria from two lowland rivers, tributaries of the Danube (eastern Europe). Larvae of the species were found incidentally in samples collected for an ichthyological study, in the gut ...
Dimitriy Antonov Dashinov   +1 more
doaj   +1 more source

Assessment of Fish Diversity in the Ma’an Archipelago Special Protected Area Using Environmental DNA

open access: yesBiology, 2022
This study aimed to investigate the practical validity of the environmental DNA (eDNA) method for evaluating fish composition and diversity in different habitats. We evaluated the fish composition and diversity characteristics of seven different habitats
Yuqing Wang   +7 more
doaj   +1 more source

Underwater Fish Detection with Weak Multi-Domain Supervision [PDF]

open access: yes2019 International Joint Conference on Neural Networks (IJCNN), Budapest, Hungary, 2019, pp. 1-8, 2019
Given a sufficiently large training dataset, it is relatively easy to train a modern convolution neural network (CNN) as a required image classifier. However, for the task of fish classification and/or fish detection, if a CNN was trained to detect or classify particular fish species in particular background habitats, the same CNN exhibits much lower ...
arxiv   +1 more source

Acoustic density estimation of dense fish shoals [PDF]

open access: yesJ. Acoust. Soc. Am. 148 (2020), 2020
Multiple scattering of acoustic waves offers a noninvasive method for density estimation of a dense shoal of fish where traditional techniques such as echo-counting or echo-integration fail. Through acoustic experiments with a multi-beam sonar system in open sea cages, multiple scattering of sound in a fish shoal, and in particular the coherent ...
arxiv   +1 more source

New pycnodontiform fishes (Actinopterygii, Neopterygii) from the Early Cretaceous of the Argentinian Patagonia [PDF]

open access: yesCretaceous Research, 2019
Here we describe new pycnodontiform fish material recovered from the marine Agrio Formation (lower Valanginian-lower Hauterivian) of the Neuquén Province in the south-western of Patagonia, Argentina. The new material include an incomplete skull and an incomplete prearticular dentition.
Soledad Gouiric-Cavalli   +2 more
openaire   +6 more sources

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