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Gene 2021 Mar 30:145622. Epub 2021 Mar 30.

School of Marine Biosciences, Kitasato University, Sagamihara, Kanagawa 252-0373, Japan.

We clarified the properties of visual opsin genes in the marbled sole (Pseudopleuronectes yokohamae) by cDNA sequencing, quantification of the opsin gene expression from the larval to the juvenile stage, and measurement of the maximum absorption spectra (λ) using photopigment reconstitution. In the marbled sole eye, at least eight visual opsin genes, lws, rh2-a, rh2-b, rh2-c, sws2a, sws2b, sws1, and rh1, were expressed. Quantitative RT-PCR analysis revealed that the expression of opsin genes increased (lws, rh2-c, sws2a, and rh1) or decreased (rh2-a, rh2-b, sws2b, and sws1) from the larval to the juvenile stage. Read More

J Fish Biol 2021 Apr 1. Epub 2021 Apr 1.

Institute of Marine Research, Bergen, Norway.

Lemon sole Microstomus kitt is a commercially valuable flatfish species that occurs in shelf waters around the northeast Atlantic. Only the most basic life history information is available for the North Sea. Spawning is generally assumed to occur between early May and October, with a peak between May and August. Read More

J Chem Ecol 2021 Mar 24. Epub 2021 Mar 24.

Horticultural Insects Research Laboratory, USDA-Agricultural Research Service, 1680 Madison Ave, Wooster, OH, 44691, USA.

Ambrosia beetles (Coleoptera: Scolytinae) cultivate their fungal symbiont within host substrates as the sole source of nutrition on which the larvae and adults must feed. To investigate a possible role for semiochemicals in this interaction, we characterized electrophysiological and behavioral responses of Xylosandrus germanus to volatiles associated with its fungal symbiont Ambrosiella grosmanniae. During still-air walking bioassays, X. Read More

BMC Vet Res 2021 Mar 5;17(1):106. Epub 2021 Mar 5.

Kreavet, Hendrik Mertensstraat 17, 9150, Kruibeke, Belgium.

Background: Strongylid nematode infections may negatively affect both animal health and welfare, with deleterious consequences for livestock productivity. Many farmers in recent decades have relied on anthelmintics as the sole strategy of control, but the intensive use of these chemotherapeutics has led to the development of anthelmintic resistance (AR). Knowledge of both the efficacy of anthelmintics and factors promoting AR are essential to effectively control nematode infections, but no information on these topics for goats in the Czech Republic (CR) is available. Read More

J Insect Sci 2021 Jan;21(1)

Departamento de Fitotecnia, Universidade Estadual Paulista, Ilha Solteira, São Paulo, Brazil.

In order to investigate a low-cost and sustainable food source, the present study evaluated the use of poultry litter for rearing Tenebrio molitor Linnaeus, 1758 (Coleoptera:  Tenebrionidae). The experiment was performed with five diets containing increasing levels of poultry litter (0, 25, 50, 75, and 100%) replacing the control diet and five replicates with 50 larvae per sample unit. Larval growth and development were evaluated and the chemical compositions of diet and T. Read More