Results 31 to 40 of about 4,087 (254)

Seasonal chaetognath abundance and distribution in a tropical estuary (Southeastern, Brazil)

Brazilian Journal of Oceanography, 2005
This study focuses on the seasonal variation of the chaetognath species in the Vitória Bay/Passage Channel estuarine system, Espírito Santo, Brazil, in terms of their abundance and distribution.
Luiz Loureiro Fernandes, José Mauro Sterza, Keyla de Oliveira Neves   +2 more
doaj   +1 more source

Trophic studies on the Okhotsk Sea herring in the 2000s (food composition, daily rations, assessment of consumption in the annual cycle)

Известия ТИНРО, 2016
Daily ration of the Okhotsk Sea herring is estimated as 3.9 % of the body weight in spring, 7.7 % in summer, 4.9 % in autumn, and 1.2 % in winter. Its mean annual consumption is assessed as 35.9 million t of prey, mainly zooplankton (97.3 % of the ration)
Konstantin M. Gorbatenko, Igor V. Melnikov   +1 more
doaj   +1 more source

Feeding of a pelagic chaetognath, Sagitta friderici Ritter-Záhony off Ubatuba region (São Paulo, Brazil)

Brazilian Journal of Oceanography, 1992
The diet of Sagitta friderici off Ubatuba region, São Paulo State, was studied in March, 1989. Specimens were collected with a closing-net during three days at six hours' intervals (00:00; 06:00; 12:00; 18:00 h), at a fixed station of 38 m depth.
Luz Amelia Vega-Pérez, Tsui Hua Liang
doaj   +1 more source

Barcoding of arrow worms (Phylum Chaetognatha) from three oceans: genetic diversity and evolution within an enigmatic phylum. [PDF]

PLoS ONE, 2010
Arrow worms (Phylum Chaetognatha) are abundant planktonic organisms and important predators in many food webs; yet, the classification and evolutionary relationships among chaetognath species remain poorly understood.
Robert M Jennings, Ann Bucklin, Annelies Pierrot-Bults   +2 more
doaj   +1 more source

Zooplankton of Oman Coastal Waters

Journal of Agricultural and Marine Sciences, 2014
Monthly sampling during daytime was carried out in 2007-2011 at Bandar Al-Khyran (23.51oN, 58.72oE) which is the largest semi-enclosed bay on the southern end of the Sea of Oman with about 4 km2 in surface area and an average depth of 10 m.
Sergey A. Piontkovski, Asila Al-Maawali, Ward Al-Muna Al-Manthri, Khalid Al-Hashmi, Elena A. Popova   +4 more
doaj   +1 more source

Vertical Distribution, Community and Population Structures of the Planktonic Chaetognatha in the Western Subarctic Pacific: Insights on the Eukrohnia Species Group

Oceans, 2023
In the oceans, Chaetognatha can contribute significantly to the total zooplankton biomass (up to 10–30%). The genus Eukrohnia, the dominant Chaetognath genus in the western subarctic Pacific, includes E. hamata and E. bathypelagica.
Yuya Nakamura, Haochen Zhang, Atsushi Yamaguchi   +2 more
doaj   +1 more source

Effects of ocean acidification on invertebrate settlement at volcanic CO2 vents [PDF]

, 2010
We present the first study of the effects of ocean acidification on settlement of benthic invertebrates and microfauna. Artificial collectors were placed for 1 month along pH gradients at CO2 vents off Ischia (Tyrrhenian Sea, Italy).
A Rittmann, B Michaelidis, BA Menge, BA Seibel, CD Keeling, CF Boudouresque, CF Boudouresque, D Iglesias-Rodriguez, D Tedesco, F Gazeau, F Porri, F. P. Patti, G Bellan, G Pulitzer Finali, G Pulitzer Finali, GC Cozzolino, GF Russo, GW Rouse, H Augier, H Kurihara, H Kurihara, H Kurihara, H Kurihara, HL Wood, HS Findlay, IB Kuffner, J Bijma, J Gobin, J Raven, J-P Gattuso, J. M. Hall-Spencer, JB Ries, JM Hall-Spencer, JP Barry, JT Houghton, K Caldeira, M Lorenti, M Sarà, M. C. Gambi, M. Cigliano, MA Green, MA Kendall, MB Scipione, MC Buia, MC Gambi, MC Gambi, MC Gambi, MI Lindinger, P Guidetti, PL deFur, PL Jokiel, R Rodolfo-Metalpa, R. Rodolfo-Metalpa, RA Feely, RE Zeebe, RP Ellis, S Dupont, S Martin, S Widdicombe, SL Dashfield, U Riebesell, U Riebesell, U Riebesell, U Riebesell   +63 more
core   +1 more source

Monthly Occurrence of Endoparasites of Chaetognaths in a Coastal System of the Mexican Central Pacific

Parasitologia
The prevalence of endoparasites associated with chaetognath abundance in the coastal waters of the Mexican Central Pacific was studied fortnightly from November 2010 to December 2011.
Viridiana Plascencia-Palomera, Carmen Franco-Gordo, Horacio Lozano-Cobo, Israel Ambriz-Arreola, Eduardo Suárez-Morales, Jaime Gómez-Gutiérrez   +5 more
doaj   +1 more source

Information-theoretic signatures of biodiversity in the barcoding gene

, 2018
The COI mitochondrial gene is present in all animal phyla and in a few others, and is the leading candidate for species identification through DNA barcoding.
Barbosa, Valmir C.
core   +1 more source

Feeding and vertical migration of the chaetognath Sagitta friderici (Ritter Zahony, 1911) in the southern Benguela during spring 1987, with notes on seasonal variability of feeding ecology [PDF]

, 1994
The feeding biology and the vertical migration of Sagitta friderici were examined over 24 h at two stations in the southern Benguela during spring (October) 1987.
Gibbons, Mark J., Stuart, V.
core   +1 more source