Results 11 to 20 of about 31,975 (232)

Testicular Morphology and Spermatogenesis in Potamotrygon motoro: Insights Into Reproduction of Freshwater Stingrays. [PDF]

open access: yesJ Morphol
Electron microscopy of Potamotrygon motoro spermatozoa. a – Illustration of a schematic sperm cell depicting the helical head, intermediate piece (midpiece), and flagellum. b ‐ Helical heads (Hh) of spermatozoa inserted into the cytoplasm of Sertoli cells (S) through openings in the plasma membrane. Scales: 10 μm.
Delgado MLR   +6 more
europepmc   +2 more sources

New records of Scomberoides tala (Cuvier, 1832), Barred Queenfish (Actinopterygii, Carangiformes, Carangidae), from southwestern Taiwan [PDF]

open access: yesCheck List
Specimens of Scomberoides tala (Cuvier, 1832) were collected from southwestern Taiwan in the northwestern Pacific Ocean. While this species has been documented in other regions of the northwestern Pacific, our specimens mark its first recorded occurrence
Yo Su, Yu-Chieh Hsu, Tzu-Yung Lin
doaj   +3 more sources

Age and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil [PDF]

open access: yes, 2018
Age and growth studies are fundamental to successful fisheries management. Zapteryx brevirostris (Muller & Henle, 1841) is distributed off the Brazilian continental shelf and this species is assessed as "Vulnerable" in the Red List of the International ...
Carmo, Wanessa P. D.   +2 more
core   +4 more sources

SEASONAL CHANGES OF THE MORPHO-BIOLOGICAL CHARACTERISTICS OF BLACK ROCKCOD NOTOTHENIA CORIICEPS (NOTOTHENIIDAE) IN THE ARGENTINE ISLANDS ARCHIPELAGO REGION

open access: yesУкраїнський антарктичний журнал, 2018
Black rockcod Notothenia coriiceps (Nototheniidae) is one of the common fish species of the Argentine Islands Archipelago region, and it is very common in the Southern Ocean waters. So, objective of the original research was to study the seasonal changes
V. N. Trokhymets, A. V. Zinkovskyi
doaj   +1 more source

Allometric Growth of the Enigmatic Deep-Sea Megamouth Shark Megachasma pelagios Taylor, Compagno, and Struhsaker, 1983 (Lamniformes, Megachasmidae)

open access: yesFishes, 2023
Megamouth sharks Megachasma pelagios Taylor, Compagno, and Struhsaker, 1983, are a large-bodied, planktivorous, deep-sea species with peculiar morphology.
Chan-gyu Yun, Yuuki Y. Watanabe
doaj   +1 more source

Gonad development and reproduction in the monoecious species Chlorophthalmus agassizi (Actinopterygii: Aulopiformes: Chlorophthalmidae) from the Sardinian Waters (Central-Western Mediterranean) [PDF]

open access: yes, 2010
Background. The shortnose greeneye, Chlorophthalmus agassizi Bonaparte, 1840, is a species with a circumglobal distribution and is among the most abundant commercial fishes in some Mediterranean areas.
Cabiddu S, Cau A, Follesa MC, Porcu C
core   +1 more source

The Black Sea Trout, Salmo labrax Pallas, 1814 (Pisces: Salmonidae) in Romanian Waters

open access: yesBulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Animal Science and Biotechnologies, 2020
The review assembles chronological data on Black Sea trout (Salmo labrax) from Romanian waters and brings up-to-date information related to the distribution of the species.
Călin LAȚIU   +6 more
doaj   +1 more source

The complex early life history of a marine estuarine-opportunist fish species, Solea turbynei (Soleidae) from temperate South Africa

open access: yesScientia Marina, 2015
The early life history stages and ecology of Solea turbynei, a marine estuarine-opportunist species, is described from nursery areas in Algoa Bay, South Africa.
Nadine A. Strydom   +2 more
doaj   +1 more source

Phylogenetic and biogeographic history of brook lampreys (Lampetra: Petromyzontidae) in the river basins of the Adriatic Sea based on DNA barcode data

open access: yesEcology and Evolution, 2023
The Adriatic brook lamprey, Lampetra zanandreai Vladykov 1955, was described from northeastern Italy. Its distribution is thought to include left tributaries of the River Po and the river basins of the Adriatic Sea from the River Po to the River Isonzo ...
Lukas Rüber   +5 more
doaj   +1 more source

Otoliths and Their Applications in Fishery Science

open access: yesFishes, 2023
Otoliths are one of the most useful and important biological structures for the various studies of fish, leading to many practical applications that are not limited only to ichthyology [...]
Josipa Ferri
doaj   +1 more source

Home - About - Disclaimer - Privacy