Distribucion, Batimetria Y Alimentacion De Epigonus Crassicaudus De Buen, 1959 (Perciformes: Epigonidae) en La Costa De Chile

Abstract

By mans of the fisheries activity records and the information of tralws sampling carried out in surveys of common hake the batimetric and latitudinal distributions of cardinal fish (Epigonus crassicaudus) in the Chilean coast were studied. Aditionality, information on feeding habits of cardinal fish through analysis of the gastric content on samples collected in the central zone from Chile are reported. According to fishery data the cardinal fish would concentrate their distribution between Valparaíso (33º04'S) and Puerto Montt (41º46'S). However, the acustic surveys register positive captures from north limit of their operation (29°00'S). Deep distribution showed coincidence from the two sources information so much in the throw positives frequency like in capture, indicating that the resource would concentrate their distributon in depth range of 300 to 400 m. Regarding the feeding, although some bentics components were registered in their diet, the preys more consumed by E. crassicaudus were planctonics organisms represented by eufausids and stomatopods. The result of present study suggest that E. crassicaudus would present migratory habits from the pelagics to the bentics environmental determined by the offer of food, concentrating their distribution on the talud and continental shelf. A wider latitudinal distribution acquaintance through the fisheries activity data was also confirmed.

A matter of size: the population structure of the smallest known living shark, Etmopterus perryi (Springer & Burgess, 1985), from deep waters off the Colombian Caribbean coast

“…Larger fish individuals inhabit deeper waters, which is known as the bigger‐deeper phenomenon (Haedrich & Rove, 1977; Pollini et al ., 1979), in which adults benefit from reduced metabolic rates and increased life probabilities owing to low temperatures in deeper waters (Cushing, 1982; Love, 1970, 1980). In general, a large number of deep‐sea fishes carry out diel vertical migrations between pelagic and benthic realms (Abramov & Lipskaya, 1989), which may be related to the feeding migratory habits in the water column (Leal et al ., 2009). For example, the diet of a similar species, E. spinax , on the upper continental slope off the Algarve (southern Portugal) suggests a fairly generalized benthopelagic foraging behaviour primarily tuned to pelagic macroplankton/microneckton, teleost fish and cephalopods (Neiva et al ., 2006).…”

La longevidad del besugo Epigonus crassicaudus en Chile: ¿es similar a la de sus parientes?

“…El besugo Epigonus crassicaudus de Buen, 1959 es un pez caracterizado por hábitos mesobento/pelágicos cuyos individuos adultos habitan el talud continental y montes submarinos donde forman densas agregaciones, mientras que los juveniles se encuentran desagregados en la zona pelágica cercana a la plataforma continental (Parin 1987). El besugo es una especie endémica de las costas frente a Chile y de acuerdo con la información pesquera, las mayores abundancias se encuentra distribuidas entre los 29°00'S y 42º50'S (Leal et al 2009) entre los 200 y 400 m de profundidad (Wiff et al 2008).…”

Reproductive traits and natural mortality of the cardinalfish Epigonus crassicaudus: crucial information for stock assessment and sustainable management measures

“…The cardinalfish (Epigonus crassicaudus) (De Buen, 1959) belongs to the Epigonidae family, a poorly studied group of perciform fishes, with permanent records of new species . This species is endemic along the Chilean coast, distributed mainly between 29°00'S and 42°50'S, in depths between 100 and 500 m (Wiff et al, 2005;Leal et al, 2009). Cardinalfish landings ha-_____________________ Corresponding editor: Alejandra Volpedo ve been recorded since 1992 with 579 t at that year, its peak in landings was 5,792 t recorded in 2000 (SERNAPESCA, 2000).…”

“…Regarding its biology, some studies addressing the food and trophic levels of this species have been reported (e.g., Arancibia & Meléndez, 1987;Neira & Arancibia, 2004;Leal et al, 2009;Sepúlveda et al, 2018). Also, the annual reproductive cycle and maturity in length to females was reported by Flores et al (2015).…”