Results 1 to 10 of about 879 (180)

Would future climate warming cause zoonotic diseases to spread over long distances? [PDF]

open access: yesPeerJ
Dipus sagitta is a major rodent found in arid environments and desert areas. They feed on plant seeds, young branches and some small insects, and have hibernating habits.
Fan Bu   +12 more
doaj   +3 more sources

Spatial and Seasonal Variations in the Stable Isotope Values and Trophic Positions of Dominant Zooplankton Groups in Jiaozhou Bay, China

open access: yesFrontiers in Marine Science, 2022
The spatial and seasonal distributions of stable carbon and nitrogen isotopes (δ13C and δ15N) in dominant zooplankton groups were investigated in Jiaozhou Bay.
Zhixin Ke   +9 more
doaj   +1 more source

PRESENT STATE OF THE SPRING PLANKTON COMMUNITY IN THE NORTHERN OKHOTSK SEA (1997–2017)

open access: yesИзвестия ТИНРО, 2018
Two periods are clearly distinguished within the last two decades (1997–2017) by several quantitative parameters of the plankton community in the northern shelf zone of the Okhotsk Sea: the period of high productivity in the 1997–2005 with the biomass of
A. F. Volkov
doaj   +1 more source

Otolith and vertebral morphology of marine atherinid species (Atheriniformes, Atherinopsidae) coexisting in the southwestern Atlantic Ocean

open access: yesCiencias Marinas, 2010
Studies on marine ecosystems rely on the identification of fish prey species of piscivores (fish, aquatic mammals, and aquatic birds) based on their bones and otoliths. The stomach contents of piscivores show predation on marine atherinids of commercial
A D Tombari   +3 more
doaj   +1 more source

Otolith atlas for the western Mediterranean, north and central eastern Atlantic

open access: yesScientia Marina, 2008
The sagittal otolith of 348 species, belonging to 99 families and 22 orders of marine Teleostean fishes from the north and central eastern Atlantic and western Mediterranean were described using morphological and morphometric characters.
Victor M. Tuset   +2 more
doaj   +1 more source

Pteropoda, Cladocera, and Chaetognatha associations as hydrological indicators in the southern Brazilian Shelf Asociaciones de Pteropoda, Cladocera y Chaetognatha como indicadores hidrológicos de la plataforma del extremo sur de Brasil

open access: yesLatin American Journal of Aquatic Research, 2008
Associations of pteropod, cladoceran, and chaetognath species were analyzed for the southern coast of Brazil in order to present a biological diagnosis of the oceanographic conditions in winter and summer. The density data from the different species were
Charrid Resgalla Jr
doaj  

Age determination of the grey mullet Mugil cephafus L. and the white mullet Mugif curema V. (Pisces: Mugilidae) in Tamiahua Lagoon, Veracruz

open access: yesCiencias Marinas, 1996
In this study, by means of the sagittu otolith analysis, five and six age groups and the relation age-length of Mugil cephalus and M. curemu, respectively, in Tamiahua Lagoon, Veracruz (Mexico), are established.
AL Ibañez-Aguirre, M Gallardo-Cabello
doaj   +1 more source

Delineation of seven species of genus Channa from upper Assam region, India using sagittal otolith morphology

open access: yesJournal of Fisheries, 2020
Morphology of sagittal otoliths of seven species of genus Channa from upper Assam, India was studied to obtain baseline information for their prospective role in taxonomic studies.
Jyotirmoy Sonowal   +2 more
doaj   +1 more source

Chaetognatha of the Namibian upwelling region: taxonomy, distribution and trophic position. [PDF]

open access: yesPLoS ONE, 2013
In October 2010, the vertical distribution, biodiversity and maturity stages of Chaetognatha species were investigated at four stations located off Walvis Bay, Namibia.
Karolina Bohata, Rolf Koppelmann
doaj   +1 more source

Morphology and morphometric relationships of the sagitta of Diapterus auratus (Perciformes: Gerreidae) from Veracruz, Mexico

open access: yesRevista de Biología Tropical, 2013
Sagittae otoliths are the most studied because of their morphological variability and size; the sagittae may also have valuable taxonomic use and for D. auratus has not yet been described.
Verónica Rivera Félix   +4 more
doaj  

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