Results 21 to 30 of about 4,603,944 (167)

Spawning cycle and fecundity of a multiple spawner round herring Etrumeus teres off southern Japan: Oocyte growth and maturation analysis

Journal of Sea Research, 2017
Abstract The spawning characteristics of round herring Etrumeus teres remain unclear despite its commercial and ecological importance. The oocyte growth and maturation during the spawning cycle of round herring were examined based on the samples collected at different hours of the day off southern Japan during their 2015 spawning season.
Mitsuo Nyuji, Akinori Takasuka
openaire   +1 more source

Experience of Identity Change in People Who Reported a Diagnosis of Multiple Sclerosis : A Qualitative Inquiry [PDF]

, 2019
Background: A diagnosis of multiple sclerosis (MS) can lead to changes to a person’s sense of self. The aim of this study was to investigate the subjective experience of identity change and subsequent adjustment to MS.
das Nair, Roshan, Smale, Kathryn, Lincoln, NB, Lincoln, Nadina B., Barker, AB, Hunt, N, Smale, K., das Nair, R, Hunt, Nigel, Barker, Alexander B., Barker, A., Smale, K, Lincoln, N.B., Hunt, N.   +13 more
core   +1 more source

Intraspecific divergence in sperm morphology of the green sea urchin, Strongylocentrotus droebachiensis: implications for selection in broadcast spawners

BMC Evolutionary Biology, 2008
Background Sperm morphology can be highly variable among species, but less is known about patterns of population differentiation within species. Most studies of sperm morphometric variation are done in species with internal fertilization, where sexual ...
Manier Mollie K, Palumbi Stephen R
doaj   +1 more source

Radiologically isolated syndrome and multiple sclerosis [PDF]

, 2017
Background Incidental white matter lesions (WML) are increasingly seen on brain magnetic resonance imaging (MRI) in clinical practice. Demyelination consistent with MS is seen in 0.1–0.7% of the population as evident by autopsy and MRI studies.
AlKhawajah, Mona Marwan, B. Yamout, M. Al Khawajah, Yamout, Bassem I.   +3 more
core   +1 more source

Spawner Quality Effects On Two Measures Of Reproductive Potential: Have We Been Counting Our Eggs Before They've Hatched? [PDF]

, 1999
No abstracts are to be cited without prior reference to the author.Recent studies have found positive associations between recruitment and ii;tdices of spawner quality (condition) for stocks exhibiting an indeterminate relationship between recruitment ...
C. Tara Marshall (14505297), Olav S. Kjesbu (10860558), Anders Thorsen (732120), Per Solemdal (12171476)   +3 more
core   +2 more sources

Reproduction of Brevoortia aurea (Spix & Agassiz, 1829) (Actinopterygii: Clupeidae) in the Mar Chiquita Coastal Lagoon, Buenos Aires, Argentina

Neotropical Ichthyology
Reproductive biology of the Brazilian menhaden, Brevoortia aurea (Clupeiformes), was studied in Mar Chiquita Coastal Lagoon. Its abundance was analysed in relation to environmental variables, and the main biological-reproductive parameters were estimated:
Nicolás Agustín Lajud, Juan Martín Díaz de Astarloa, Mariano González-Castro   +2 more
doaj   +1 more source

Spawning pattern of the neon flying squid Ommastrephes bartramii (Cephalopoda: Oegopsida) around the Hawaiian Islands

Scientia Marina, 2014
The neon flying squid, Ommastrephes bartramii, is an oceanic squid species that is widely distributed in the North Pacific, with the winter-spring cohort spawning around the Hawaiian Islands.
Dharmamony Vijai, Mitsuo Sakai, Yoshihiko Kamei, Yasunori Sakurai   +3 more
doaj   +1 more source

Hierarchical population genetic structure in a direct developing antarctic marine invertebrate. [PDF]

PLoS ONE, 2013
Understanding the relationship between life-history variation and population structure in marine invertebrates is not straightforward. This is particularly true of polar species due to the difficulty of obtaining samples and a paucity of genomic ...
Joseph I Hoffman, Andrew Clarke, Melody S Clark, Lloyd S Peck   +3 more
doaj   +1 more source

Reproductive studies of Anchoa marinii Hildebrand, 1943 (Actinopterygii: Engraulidae) in the nearby-coastal area of Mar Chiquita coastal lagoon, Buenos Aires, Argentina

Neotropical Ichthyology
The aim of the present study provides the first results on the reproductive biology of the anchovy, Anchoa marinii, in a nearby-coastal area of Mar Chiquita coastal lagoon, 37º32'00"S 57º19'00"W, Argentina.
Sofía López, Ezequiel Mabragaña, Juan Martín Díaz de Astarloa, Mariano González-Castro   +3 more
doaj   +1 more source

Reproductive biology of the striped goby, Gobius vittatus (Gobiidae) in the northern Adriatic Sea

Scientia Marina, 2007
The striped goby, Gobius vittatus Vinciguerra, 1883 is a Mediterranean gobiid species considered to be rare and lacking in data on its reproduction. Sex ratio, length and age at first maturity, annual cycle of gonad development, spawning period and ...
Marcelo Kovacic
doaj   +1 more source