Results 71 to 80 of about 879 (180)

Ontogenetic and sex-related variations in otolith morphology and structure of thinlip gray mullet from a transitional environment in northern Italy

open access: yesFrontiers in Marine Science
Otoliths are calcified structures present in the inner ear of fish involved in hearing and balance. Notwithstanding that their shape is species-specific, which is helpful for taxonomic identification, the intraspecific variability of shape and structures
Francesca De Witt   +10 more
doaj   +1 more source

A web-based environment for shape analysis of fish otoliths. The AFORO database

open access: yesScientia Marina, 2006
We present an automatic system for describing and identifying fish otolith shapes combining information technologies with modern advances in signal analysis.
Antoni Lombarte   +5 more
doaj   +1 more source

Characterization of salmon‐foraging harbor seals (Phoca vitulina) in the Erimo region, Hokkaido, Japan, using finite mixture models

open access: yesThe Journal of Wildlife Management, Volume 90, Issue 2, February 2026.
Finite mixture models revealed that older, larger harbor seals specialize in salmon predation at setnets in Hokkaido, Japan, suggesting targeted management strategies focusing on these specialist individuals could effectively reduce fishery conflicts while protecting the broader seal population.
Takahito Masubuchi, Mari Kobayashi
wiley   +1 more source

Dissolved and Particulate Methylated Mercury in a Highly Productive Area of the Southern Ocean

open access: yesGlobal Biogeochemical Cycles, Volume 40, Issue 1, January 2026.
Abstract Methylated mercury (MeHg), including dimethylmercury and monomethylmercury (MMHg), is a pollutant of concern because it biomagnifies in marine biota. The formation of MeHg in the oceans, specifically at highly productive regions and at high oxygen levels, remains elusive.
Harald Biester   +12 more
wiley   +1 more source

Dipus sagitta

open access: yes, 1993
Dipus sagitta (Pallas, 1773). Reise Prov. Russ. Reichs., 2:706. TYPE LOCALITY: N Kazakhstan, Pavlodarskaya Oblast, right bank of Irtysh River near Yamyshevskaya at Podpusknoi (see Ellerman and Morrison-Scott, 1951:535). DISTRIBUTION: Desert, steppe and dry woodland from Don River (Russia), NW coast of Caspian Sea, and N Iran, through Turkmenistan ...
openaire   +2 more sources

DESCRIÇÃO DOS OTÓLITOS DE TUCUNARÉS (Cichla sp. e Cichla monoculus) NO RESERVATÓRIO DA HIDRELÉTRICA DE VOLTA GRANDE (SP–MG)

open access: yesCiência Animal Brasileira, 2007
Objetivou-se, neste trabalho, caracterizar as sagittae de Cichla sp. e Cichla monoculus introduzidas no reservatório da Hidrelétrica de Volta Grande, assim como as relações de seu comprimento e largura com os comprimentos totais dos peixes.
Leandro Muller Gomiero   +1 more
doaj   +1 more source

Comparison of morphometric characteristics of otolith for ten Clupeid species of the Persian Gulf

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2011
Morphometric comparison of sagitta otolith in 10 clupeid species of the Persian Gulf and Oman Sea including Anodontostoma chacunda, Dussumieria acuta, Dussumieria elopsoides, Ilisha megaloptera, Ilisha melastoma, Nematolosa nasus, Sardinella gibbosa ...
H. Homauni; T. Valinassab email ; S.J. Seifabadi
doaj  

Description of new species of Genus Hamataliwa (Araneae, Oxyopidae) from India [PDF]

open access: yesTravaux du Muséum National d’Histoire Naturelle “Grigore Antipa”
New species of Lynx spider, Hamataliwa sagitta sp. nov. is described from Vazhani dam area, a part of Western Ghats of Kerala, India. Detailed morphological description, diagnostic features and illustration of the female of this species is given.
Kandampully Baji Amulya   +2 more
doaj   +3 more sources

Sagitta, Lenses, and Maximal Volume [PDF]

open access: yesThe Journal of Geometric Analysis, 2015
We give a characterization of critical points that allows us to define a metric invariant on all Riemannian manifolds $M$ with a lower sectional curvature bound and an upper radius bound. We show there is a uniform upper volume bound for all such manifolds with an upper bound on this invariant.
openaire   +3 more sources

On the Development of Sagitta [PDF]

open access: yesJournal of Cell Science
ABSTRACT Having in a former volume of this journal given an account of what is known respecting the structure and relations of Sagitta bipunctata, we have thought that an abstract of Dr. Gegenbaur’s observations on the subject of reproduction in that genus would not be unacceptable; and the more so, as this part of the history of Sagitta
openaire   +1 more source

Home - About - Disclaimer - Privacy