Results 31 to 40 of about 4,397 (232)
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 +2 more
doaj +1 more source
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 +1 more
doaj +1 more source
Chaetognatha, Spadellidae, Paraspadella nana Owre, 1963: new occurrence from the southwest Atlantic Ocean [PDF]
Check List, 2010 Chaetognaths are composed by six families and among them Spadellidae is strictly benthic. This study reports the first occurrence of Paraspadella nana Owre, 1963 in the coastal zone located in the northern region of Espírito Santo state (19°51’12” S, 40 ...
Michele Arruda +2 more
doaj +3 more sources
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
No evidence for a culturable bacterial tetrodotoxin producer in Pleurobranchaea maculata (Gastropoda: Pleurobranchidae) and Stylochoplana sp. (Platyhelminthes: Polycladida) [PDF]
, 2015 Tetrodotoxin (TTX) is a potent neurotoxin found in the tissues of many taxonomically diverse organisms. Its origin has been the topic of much debate, with suggestions including endogenous production, acquisition through diet, and symbiotic bacterial ...
Cary, S. Craig +3 more
core +3 more sources
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 +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 +4 more
doaj +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
ParasitologiaThe 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 +5 more
doaj +1 more source
Ege Journal of Fisheries and Aquatic Sciences, 2020 In this study, the relationship between the fatty acid composition, abundance of carnivore Sagitta setosa (S. setosa) and total copepod abundance (copepodites and nauplii) which are the main diets of S. setosa was investigated.
Nurgül Şen Özdemir +2 more
semanticscholar +1 more source