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1.
J Fish Biol ; 103(1): 183-188, 2023 Jul.
Article in English | MEDLINE | ID: mdl-37070750

ABSTRACT

The giant mottled eel (Anguilla marmorata) is distributed mostly in the Indo-West Pacific. However, a few records indicate the presence of this eel in the Tropical Central and East Pacific. In April 2019, an eel specimen was caught in a small stream in San Cristobal Island, Galápagos. Morphological and molecular characters (16S and Cytb mtDNA sequences) confirmed the species as A. marmorata Quoy & Gaimard, 1824. The re-discovery of A. marmorata in Galápagos supports the hypothesis of an eastward range expansion from the west, probably through the North Equatorial Counter-Current.


Subject(s)
Anguilla , Animals , Anguilla/genetics , Ecuador , Rivers , DNA, Mitochondrial/genetics
3.
Microbiol Resour Announc ; 9(34)2020 Aug 20.
Article in English | MEDLINE | ID: mdl-32816976

ABSTRACT

We present the complete genome sequences of Mycobacterium smegmatis phages Jung and Ronan, isolated from soil in Las Vegas, Nevada. The phages were isolated and annotated by students enrolled in a course for undergraduate research experience (CURE). Jung is a cluster P1 mycobacteriophage, while Ronan is in cluster C1.

4.
Ciênc. rural ; 37(6): 1798-1800, nov.-dez. 2007. tab
Article in English | LILACS | ID: lil-464917

ABSTRACT

This research was aimed at evaluating nymph population density of whitefly (Bemisia tabaci biotype B) in melon plants after treatment with neem-dry-leaf aqueous extracts and neem-oil ( A. Juss.) applied alternately with neonicotinoid insecticides under field conditions. The experimental design was a randomized block, with 6 treatments and 4 replications. The treatments were control (only water); neem-dry-leaf extract at 5 percent (neem-dry-leaf powder 50g L-1 of water); neem oil (5.0mL L-1 water); chemicals insecticides imidacloprid (30g 25L-1 of water) and acetamiprid (5g 20L-1 of water); neem-dry-leaf extract at 5 percent weekly alternated with imidacloprid (30g 25L-1 of water) and acetamiprid (5g 20L-1 of water); neem oil (5.0mL L-1 of water) weekly alternated with imidacloprid (30g 25L-1 of water) and acetamiprid (5g20 L-1 of water). The efficiency of treatments was compared through of the number of nymphs recorded in leaves of melon with 35, and 50 days after planting. The less number of nymphs was registered when the neem oil was applied alternatively with the chemical treatment with efficiency of 28.58 and 7.85 percent in the first and second evaluations, respectively. However, the nymphs incidence was higher when the neem oil and the chemical treatment were applied separately.


O objetivo deste trabalho foi avaliar a densidade populacional de ninfas de mosca-branca (Bemisia tabaci biótipo B) em plantas de melão após o tratamento com extratos aquosos de folhas secas de nim e de óleo de nim (Azadiracta indica A. Juss.), aplicados alternadamente com inseticidas neonitotinóides, sob condições de campo. O delineamento utilizado foi o de blocos casualizados, com 6 tratamentos e 4 repetições. Foram utilizados os seguintes tratamentos: controle (apenas água); extrato aquoso de folhas secas de nim a 5 por cento (pó de folhas secas de nim, 50 g L-1 de água); óleo de nim (5mL L-1 de água); inseticidas químicos imidacloprid (30g 25L-1 de água) e acetamiprid (5g 20L-1 de água); extrato de folhas secas de nim a 5 por cento alternado semanalmente com imidacloprid (30g 25L-1 de água) e acetamiprid (5g 20L-1 de água); e óleo de nim (5mL L-1 de água) alternado semanalmente com imidacloprid (30g 25L-1 de água) e acetamiprid (5g 20L-1 de água). A eficiência dos tratamentos foi comparada através do número de ninfas registrado nas folhas de melão aos 35 e 50 dias após o plantio. O menor número de ninfas foi registrado quando o óleo de nim foi aplicado alternadamente com o tratamento químico, com eficiência de 28,58 e 7,85 por cento na primeira e segunda avaliações, respectivamente. No entanto, a incidência de ninfas foi maior quando o óleo e o tratamento químico foram aplicados separadamente.

5.
Ciênc. cult. (Säo Paulo) ; 49(1/2): 48-53, jan.-abr. 1997. ilus, tab, graf
Article in English | LILACS | ID: lil-198297

ABSTRACT

A series of experiments was performed to characterize the metal binding properties of peat from the Jacarepagu bog and to provide basic knowledge on the sorption process. The kinetics of sorption was fast characterized by relaxation times, on the average, less than 60 min. Erichment factors taken at half saturation level ranged from 400 for zinc and cadmiun to > 2800 for gold. The results indicate that the peat from Jacarepagu can be an interesting option for the expensive conventional materials applied to recover metal ions from waste and poor mining waters.


Subject(s)
Soil/analysis , Humic Substances/chemistry
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