The orobranchial structures in four neotropical silversides (Teleostei: Atherinopsidae) related with feeding habits

Toxicity evaluation of the active ingredient acetamiprid and a commercial formulation (Assail® 70) on the non-target gastropod Biomphalaria straminea (Mollusca: Planorbidae)

“…The alterations caused by contaminants in a particular species may impact other species, for example, through the food web. Thus, the effects on a species can negatively impact ecosystems, and affect economically relevant species that feed on it, such as silversides and trouts, important predators of gastropods (Martínez-Palacios et al, 2019;Ríos et al, 2015). This fish species are relevant for local consumption, commerce and tourism, livelihood sources of coastal populations in several regions of our country.…”

Loss of gut microbial diversity in the cultured, agastric fish, Mexican pike silverside (Chirostoma estor: Atherinopsidae)

“…To help fill in the knowledge gap about the importance and function of agastric fish gut microbiota, we propose studying the Mexican pike silverside, Chirostoma estor due to its simplified digestive tract lacking a stomach and consisting instead of a short-intestine that is only 0.7 the fish’s length (relative gut length - rgl) ( Ross et al, 2006 ). The Mexican pike silverside has been described by the FAO of the United Nations, as a species with high aquaculture potential due to its regional importance, low trophic level, and high nutraceutical value (high docosahexaenoic acid (DHA) content) ( Fonseca-Madrigal et al, 2014 ; Martínez-Palacios et al, 2019 ; Martínez-Palacios et al, 2020 ). This teleost fish consumes mostly zooplankton and insects, which are finely ground by chewing before swallowing ( Ross et al, 2006 ; Martínez-Palacios et al, 2019 ).…”

“…The Mexican pike silverside has been described by the FAO of the United Nations, as a species with high aquaculture potential due to its regional importance, low trophic level, and high nutraceutical value (high docosahexaenoic acid (DHA) content) ( Fonseca-Madrigal et al, 2014 ; Martínez-Palacios et al, 2019 ; Martínez-Palacios et al, 2020 ). This teleost fish consumes mostly zooplankton and insects, which are finely ground by chewing before swallowing ( Ross et al, 2006 ; Martínez-Palacios et al, 2019 ). Due to its simplified intestinal configuration, we hypothesize that the Mexican pike silverside is likely to depend more heavily on its gut microbiota for aid in digestion and nutrient absorption, compared to teleosts with stomachs or more sophisticated digestive systems.…”