Results 1 to 10 of about 150 (103)

Mitochondrial genomes of the South American electric knifefishes (Order Gymnotiformes) [PDF]

Mitochondrial DNA Part B, 2016
Three complete mitochondrial genomes of South American electric fishes (Gymnotiformes), derived from high-throughput RNA sequencing (RNA-Seq), are reported herein. We report the complete mitochondrial genome of the bluntnose knifefish Brachyhypopomus n.sp. VERD, determined from newly sequenced data.
Elbassiouny, Ahmed A., Schott, Ryan K., Waddell, Joseph C., Kolmann, Matthew A., Lehmberg, Emma S., Van Nynatten, Alexander, Crampton, William G. R., Chang, Belinda S. W., Lovejoy, Nathan R.   +8 more
europepmc   +5 more sources

Development of the electric organ in embryos and larvae of the knifefish, Brachyhypopomus gauderio

Developmental Biology, 2020
South American Gymnotiform knifefish possess electric organs that generate electric fields for electro-location and electro-communication. Electric organs in fish can be derived from either myogenic cells (myogenic electric organ/mEO) or neurogenic cells
Yosuke Ono, Ana Correia, Anke Lange
exaly   +3 more sources

Population Variation in Steroid Hormone-Related Gene Expression and Sexually Dimorphic Communication in the Electric Fish Apteronotus albifrons. [PDF]

J Exp Zool A Ecol Integr Physiol
ABSTRACT The development and maintenance of sexually dimorphic behavior often depends on gonadal steroids. Interspecific variation in the magnitude of behavioral sex differences may be mediated by differences in steroid action on neural circuits controlling behavior.
Proffitt MR, Smith GT.
europepmc   +2 more sources

Co-adaptation of electric organ discharges and chirps in South American ghost knifefishes (Apteronotidae) [PDF]

Journal of Physiology-Paris, 2016
Animal communication signals that simultaneously share the same sensory channel are likely to co-evolve to maximize the transmission of each signal component. Weakly electric fish continuously produce a weak electric field that functions in communication.
Jacquelyn M, Petzold, Gary, Marsat, G Troy, Smith   +2 more
openaire   +3 more sources

South American electric knifefishes of the genus Archolaemus (Ostariophysi, Gymnotiformes): undetected diversity in a clade of rheophiles [PDF]

Zoological Journal of the Linnean Society, 2012
Vari, Richard P., Santana, Carlos David De, Wosiacki, Wolmar B. (2012): South American electric knifefishes of the genus Archolaemus (Ostariophysi, Gymnotiformes): undetected diversity in a clade of rheophiles. Zoological Journal of the Linnean Society 165 (3): 670-699, DOI: 10.1111/j.1096-3642.2012.00827.x, URL: http://dx.doi.org/10.1111/j.1096-3642 ...
RICHARD P. VARI, CARLOS DAVID DE SANTANA, WOLMAR B. WOSIACKI   +2 more
openaire   +4 more sources

Inspired by the Black Ghost Knifefish: Bionic Design of Undulatory Fin with 2‐DOF Rays and Its Propulsion Performance

Applied Bionics and Biomechanics, Volume 2023, Issue 1, 2023., 2023
The demand for high‐performance underwater thrusters in marine engineering is increasing. The concealed, mobile, and efficient underwater ability of fish provides many directions for research. The black ghost knifefish uses only wavy ventral fins to swim and can hover and roll in the water.
Jie Zhou, Nan Yu, Song Liu, Linbo Xin, Yuhui Liu, Guowei Gao, Zhonglai Na, Xuyan Hou, Liwei Shi   +8 more
wiley   +1 more source

Archolaemus janeae (Gymnotiformes, Teleostei): First insights into karyotype and repetitive DNA distribution in two populations of the Amazon

Ecology and Evolution, Volume 11, Issue 22, Page 15468-15476, November 2021., 2021
Abstract Archolaemus, one of the five genera of Neotropical freshwater fish of the family Sternopygidae (Gymnotiformes), was long considered a monotypic genus represented by Archolaemus blax. Currently, it consists of six species, most of them occurring in the Amazon region. There are no cytogenetic data for species of this genus. In the present study,
Paula Pinto Rodrigues, Milla de Andrade Machado, Ananda Marques Pety, Danillo dos Santos Silva, Augusto Cesar Paes de Souza, Julio Cesar Pieczarka, Cleusa Yoshiko Nagamachi   +6 more
wiley   +1 more source

Distribution of the cholinergic nuclei in the brain of the weakly electric fish, Apteronotus leptorhynchus: Implications for sensory processing

Journal of Comparative Neurology, Volume 529, Issue 8, Page 1810-1829, June 2021., 2021
Being widespread across different brain systems, the neuromodulatory action of acetylcholine plays a critical role in a vast range of neural processes such as learning and memory, attention, motor control, and sensory processing. In this study, we describe the spatial distribution of cholinergic neurons throughout the brain of the weakly electric fish,
Brenda Toscano‐Márquez, Livio Oboti, Erik Harvey‐Girard, Leonard Maler, Rüdiger Krahe   +4 more
wiley   +1 more source

Ontogeny of the electric organ discharge and of the papillae of the electrocytes in the weakly electric fish Campylomormyrus rhynchophorus (Teleostei: Mormyridae)

Journal of Comparative Neurology, Volume 529, Issue 5, Page 1052-1065, April 1, 2021., 2021
The electric organ (EO) of mormyrid weakly electric fish is located in the tail on either side of the spinal cord. It consists of dorsal and ventral columns of serially arranged electrocytes which are derivatives of muscle cells. In Campylomormyrus rhynchophorus it produces a long triphasic discharge.
Yevheniia Korniienko, Ralph Tiedemann, Marianne Vater, Frank Kirschbaum   +3 more
wiley   +1 more source

Evolution of electric communication signals in the South American ghost knifefishes (Gymnotiformes: Apteronotidae): A phylogenetic comparative study using a sequence-based phylogeny [PDF]

Journal of Physiology-Paris, 2016
The electric communication signals of weakly electric ghost knifefishes (Gymnotiformes: Apteronotidae) provide a valuable model system for understanding the evolution and physiology of behavior. Apteronotids produce continuous wave-type electric organ discharges (EODs) that are used for electrolocation and communication.
Smith, Adam R., Proffitt, Melissa R., Ho, Winnie W., Mullaney, Claire B., Maldonado-Ocampo, Javier Alejandro, Lovejoy, Nathan R., Alves-Gomes, José Antônio, Smith, G. Troy   +7 more
openaire   +3 more sources