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Fish Watcher Record |
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Contributor: Sergio Escárcega Rodríguez
| ID: 2158 Country: Mexico Address: Web page: |
| Update entries Point map FishWatcher records of this species | |||||
| Species: | Centropomus nigrescens | ||||
| Attachment: | Colecta crías rio Balsas.JPG | ||||
| URL: | |||||
| Locality:* | Left arm of the Balsas river, to 11 km of the opening, in Michoacan, Mexico | ||||
| Type: | River | ||||
| Salinity:* | freshwater | ||||
| Water depth: | 0 - 1 m | ||||
| Latitude:* | 18° 2.06' N Latitude (dec): 18.03433333238 | ||||
| Longitude:* | 102° 10.4' W Longitude (dec): -102.17333332698 | ||||
| Accuracy: | accurate | ||||
| Country:* | Mexico | ||||
| FAO area:* | Pacific, Eastern Central | ||||
| Temp.: | 27.5°C | ||||
| Date:* | 25/11/2004, dd/mm/yyyy | ||||
| Day time: | 11:00 - 14:00 h e.g. 13:00 - 15:00 | ||||
| Length:* | 6 cm Type:* TL | ||||
| Weight: | g | ||||
| Abundance: | common (usually seen) | ||||
| Life stage: | juveniles | ||||
| Sex: | undetermined | ||||
| Gear: | network atarraya | ||||
| Source: | Escarcega, R.S. 2010. Acclimatization to the captivity of black snook, Centropomus nigrescens (Günther, 1864), in rustic ponds in the coast of Michoacan, Mexico. Thesis of Masters. Michoacan University of San Nicolas de Hidalgo, Mexico | ||||
| Remark: | From the collection of 198 fingerlings of 5-7 cm of T.L. in the left arm of the Balsas river in a period the month of November of 2004 between June of 2008, integrated a lot of 29 youthful ones in a phase of end of confinement in brackish water in a rustic pond in Boca de Apiza, Mich. The reached results show C. nigrescens as a species with attributes for its culture, between which they stand out the facility for the collection of fingerlings in the Balsas river, the adaptability for his handling and growth in ponds of fresh water to values of: 27.5° C, 5.38 mg/L of dissolved oxygen, 0.2 ‰ of salinity, pH of 8.0, 95 mg/L of total alkalinity, 153 mg/L of total hardness and 0.051 mg/L of unionized ammonium; the feasibility in the use of benzocaína to 60 mg/L for the total sedation and the handling of the organisms, and its adaptability and resistance to the handling with networks. One also identified the feasibility for the capture and acclimatization of adult organism in the zone of the mouth of the Balsas river, the high degree of adaptability of the species to ample variations of salinity (from 25.0 ‰ to 0.2 ‰ and from 0.2 ‰ to 22.0‰ in two hours, at different moments), resistance to the handling and feasibility for its transportation to rates of 11.6 kg of biomass/m3 by space of 5 hours to a temperature of 27.0 °C. | ||||
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