Anatomy of the olfactory system and potential role for chemical communication in the sound‐producing Lusitanian toadfish, Halobatrachus didactylus DOI Creative Commons
Teresa Modesto,

Beatriz Neves Gregório,

Gonçalo Marcelino

et al.

Journal of Fish Biology, Journal Year: 2024, Volume and Issue: 105(1), P. 59 - 71

Published: April 17, 2024

Abstract The current study investigated the structure and function of olfactory system Lusitanian toadfish, Halobatrachus didactylus , using histology electrophysiology (electro‐olfactogram [EOG]), respectively. consists a digitated anterior peduncle, unknown function, containing inhalant nostril. This then leads to U‐shaped chamber with epithelium—identified by G αolf ‐immunoreactivity—on ventral surface. A large lacrimal sac is connected this tube likely involved in generating water movement through (this species largely sedentary). exhalent nostril lies eye preceded bicuspid valve ensure one‐way flow water. As do other teleosts, H. had sensitivity amino acids bile acids. Large‐amplitude EOG responses were evoked fluid from posterior testicular accessory glands, intestinal fluids. Anterior gland fluids reproductive males significantly more potent than those non‐reproductive males. Male urine skin mucus proved be least body tested. These results suggest that chemical communication—as well as acoustic communication—may important reproduction may mediated glands fluid.

Language: Английский

Behavioural responses to visual and chemical cues in Mozambique tilapia (Oreochromis mossambicus): a putative pheromonal activity for 17β-estradiol 3-glucuronate DOI Creative Commons

Samyar Ashouri,

Adelino V. M. Canário, Peter C. Hubbard

et al.

Behavioral Ecology and Sociobiology, Journal Year: 2025, Volume and Issue: 79(4)

Published: April 1, 2025

Language: Английский

Citations

0
Possible Involvement of Ghost Introgressions in the Striking Diversity of Vomeronasal Type 1 Receptor Genes in East African Cichlids DOI Creative Commons
Shunsuke Taki, Zicong Zhang, Mitsuto Aibara

et al.

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(5)

Published: May 1, 2025

ABSTRACT Cichlids that have undergone adaptive radiation are genetically close but exhibit extreme ecological and morphological diversity, making them useful for understanding speciation mechanisms. Vomeronasal type 1 receptors (V1R) highly conserved among teleost fish at the amino acid sequence level believed to play a fundamental role in reproduction. We previously reported surprisingly high diversity of V1Rs certain cichlid species, suggesting possible their speciation. In this study, we investigated process evolutionary diversification all 6 (V1R1–6) by using genome data 528 encompassing nearly lineages. case V1R2, two divergent alleles (1.17%: variant sites/coding [CDS] length) without recombination were preserved shared cichlids found East African Great Lakes. V1R6, numerous variable could be derived from multiple events between (1.39%: sites/CDS Lake Victoria cichlids. Additionally, identified V1R1 within tribe Tropheini, both V1R3 V1R6 Trematocarini Ectodini. However, despite extensive investigations, not identify source lineages these introgressions, implying they may become extinct. This study revealed potential introgression explaining remarkable

Language: Английский

Citations

0
Fermented bile acids improved growth performance and intestinal health by altering metabolic profiles and intestinal microbiome in Micropterus salmoides DOI

Qing Guo,

Wénwén Liú,

Lu Zhao

et al.

Fish & Shellfish Immunology, Journal Year: 2024, Volume and Issue: 149, P. 109593 - 109593

Published: May 1, 2024

Language: Английский

Citations

3
Male lake char release taurocholic acid as part of a mating pheromone DOI Creative Commons
Tyler J. Buchinger, Ke Li, Ugo Bussy

et al.

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(2)

Published: Jan. 15, 2024

ABSTRACT The evolutionary origins of sexual preferences for chemical signals remain poorly understood, due, in part, to scant information on the molecules involved. In current study, we identified a male pheromone lake char (Salvelinus namaycush) evaluate hypothesis that it exploits non-sexual preference juvenile odour. anadromous species, odour stream-resident juveniles guides migratory adults into spawning streams. Lake are also attracted but have lost phenotype and spawn nearshore reefs, where does not persist long enough act as cue site selection by adults. Previous behavioural data raised possibility males release includes components Using metabolomics, found most abundant molecule released was females. Tandem mass spectrometry nuclear magnetic resonance were used identify taurocholic acid (TCA), which previously implicated component Additional analyses revealed TCA at high rates via their urine during season. Finally, picomolar concentrations pre-spawning females males. Taken together, our results indicate mating support is partial match

Language: Английский

Citations

1
A pheromone receptor in cichlid fish mediates attraction to females but inhibits male parental care DOI
Chengyu Li,

Jessica Bowers,

Theresa Alexander

et al.

Current Biology, Journal Year: 2024, Volume and Issue: 34(17), P. 3866 - 3880.e7

Published: Aug. 1, 2024

Language: Английский

Citations

1
A male tilapia's nose knows fertile females from their feces DOI Open Access
Andrew Saintsing

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(3)

Published: Feb. 1, 2024

Like dogs laying claim to territory, male Mozambique tilapia (Oreochromis mossambicus) use urine assert their dominance. The scents, called pheromones, that dominant males release in keep subordinate docile and prime females lay eggs. But social status urinary pheromones are just part of the elaborate process mating. After establish dominance over males, fish dig defend pits which attracted fertile Females, choose mates, also need communicate they ready reproduce so know when strut stuff. Samyar Ashouri, José Da Silva, Adelino Canário Peter Hubbard from University Algarve, Portugal, suspected may additional scents feces fertility, investigated whether started defecating any attractive aromas were mate.The researchers created groups with two four each group, then placed group into its own tank. They tracked behaviors for a week decided one was based on tendency bite, mate. reproductive cycles 3 months determine about ovulate most likely draw attention males. establishing female's collected analyze contents; found had higher quantities several amino acids bile – chemicals help digest fats other nutrients feces. team suggested these differences due hormones, rather than dietary changes associated motherhood, because occurred both sexes.Still, can only signal if smell them. To check could feces, put small tanks, pumped different substances water measured nerves noses responded scents. Males picked up scent female fish, scientists simultaneously fish's nose, resulting electrical activity even have capacity recognize acid individually.Confident chemicals, checked see caused behavioral First, front mirror fool thinking he competitor fight, mellowed. Because none or reduced male's aggressiveness, concluded fecal odors don't act like However, tanks three distinct chambers swim into, observed pumping prompted them start digging more frequently preparation When alone tank, swam scented section dug more, but not acids. This suggests there is connection between tilapia's fertility she produces, nose knows it.

Language: Английский

Citations

0
Anatomy of the olfactory system and potential role for chemical communication in the sound‐producing Lusitanian toadfish, Halobatrachus didactylus DOI Creative Commons
Teresa Modesto,

Beatriz Neves Gregório,

Gonçalo Marcelino

et al.

Journal of Fish Biology, Journal Year: 2024, Volume and Issue: 105(1), P. 59 - 71

Published: April 17, 2024

Abstract The current study investigated the structure and function of olfactory system Lusitanian toadfish, Halobatrachus didactylus , using histology electrophysiology (electro‐olfactogram [EOG]), respectively. consists a digitated anterior peduncle, unknown function, containing inhalant nostril. This then leads to U‐shaped chamber with epithelium—identified by G αolf ‐immunoreactivity—on ventral surface. A large lacrimal sac is connected this tube likely involved in generating water movement through (this species largely sedentary). exhalent nostril lies eye preceded bicuspid valve ensure one‐way flow water. As do other teleosts, H. had sensitivity amino acids bile acids. Large‐amplitude EOG responses were evoked fluid from posterior testicular accessory glands, intestinal fluids. Anterior gland fluids reproductive males significantly more potent than those non‐reproductive males. Male urine skin mucus proved be least body tested. These results suggest that chemical communication—as well as acoustic communication—may important reproduction may mediated glands fluid.

Language: Английский

Citations

0