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Glandular cell products in adult cestode: A new tale of tapeworm interaction with fish innate immune response.
Int J Parasitol Parasites Wildl
December 2024
Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, 152742, Borok, Yaroslavl District, Russia.
The caryophyllidean tapeworm (Janiszewska, 1953) is indigenous to the Lake Blidinje in the west-central part of Bosnia-Herzegovina where it infects chub (Heckel, 1843). Of 22 chubs examined, 45% were infected with and a total of 912 specimens of this worm were counted. Histopathological and ultrastructural investigations were conducted on interface region between chub intestine and cestode scolex.
View Article and Find Full Text PDFMitogenomic recognition of incognito lineages in the mud spiny lobster Panulirus polyphagus (Herbst, 1793): A tale of unique genetic structuring and diversification.
Int J Biol Macromol
October 2024
CMFRI, Kochi, Kerala, India.
This study provides the first documentation of three deep conspecific lineages within Panulirus polyphagus in the Indian Ocean, bridging the gap in genetic research. Comparative mitogenomics between lineages (L) at both species and family levels, evolutionary relationships and heterogeneity of sequence divergence within Decapoda, and divergence time estimation were performed. The characterized mitogenomes ranged from 15,685-15,705 bp in size and exhibited a typical pancrustacean pattern.
View Article and Find Full Text PDFCoexistence, resource partitioning, and fisheries management: A tale of two mesopredators in equatorial waters.
J Fish Biol
April 2024
Department of Biological Sciences, University of Windsor, Windsor, Ontario, Canada.
Rock hind (Epinephelus adscensionis) and spotted moray (Gymnothorax moringa) are ubiquitous mesopredators that co-occur in the nearshore waters of Ascension Island in the South Atlantic Ocean, where they have significant cultural and subsistence value, but management of their non-commercial take is limited. This isolated volcanic system is home to high biomass and low species diversity, which poses two key questions: How can two mesopredators that perform similar ecological roles coexist? And if these two species are so ecologically similar, can they be managed using the same approach? Here, we combined acoustic telemetry, stomach content analysis, and stable isotope analysis to (i) explore space use and diet choices within and between these two species and (ii) to assess appropriate species-specific management options. Although rock hind had high residency and small calculated home ranges (0.
View Article and Find Full Text PDFA tale of two males: Behavioral and neural mechanisms of alternative reproductive tactics in midshipman fish.
Horm Behav
May 2024
Department of Neurobiology and Behavior, Cornell University, Ithaca, NY 14853, USA. Electronic address:
An amalgam of investigations at the interface of neuroethology and behavioral neuroendocrinology first established the most basic behavioral, neuroanatomical, and neurophysiological characters of vocal-acoustic communication morphs in the plainfin midshipman fish, Porichthys notatus Girard. This foundation has led, in turn, to the repeated demonstration that neuro-behavioral mechanisms driving reproductive-related, vocal-acoustic behaviors can be uncoupled from gonadal state for two adult male phenotypes that follow alternative reproductive tactics (ARTs).
View Article and Find Full Text PDFThere and back again? A B cell's tale on responses and spatial distribution in teleosts.
Fish Shellfish Immunol
May 2024
Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT - the Arctic University of Norway, Tromsø, Norway.
Teleost B cells are of special interest due to their evolutionary position and involvement in vaccine-induced adaptive immune responses. While recent progress has revealed uneven distribution of B cell subsets across the various immune sites and that B cells are one of the early responders to infection, substantial knowledge gaps persist regarding their immunophenotypic profile, functional mechanisms, and what factors lead them to occupy different immune niches. This review aims to assess the current understanding of B cell diversity, their spatial distribution in various systemic and peripheral immune sites, how B cell responses initiate, the sites where these responses develop, their trafficking, and the locations where long-term B cell responses take place.
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