Empirical relationships to estimate asymptotic length, length at first maturity and length at maximum yield per recruit in fishes, with a simple method to evaluate length frequency data
نویسندگان
چکیده
منابع مشابه
Length weight relationship, condition factor and length at first maturity of Indian halibut Psettodes erumei in the Persian Gulf
Length weight relationship, condition factor and length at first maturity of Indian halibut Psettodes erumei were investigated in the Persian Gulf by monthly sampling of 30 fish from March to February 2012. Mean value of total length and weight were 38.68 ± 9.39 cm and 986.92 ± 756.79 gr, respectively. Maximum and minimum values of total length were in August (44.43 ± 6.37 cm) and March (23.27 ...
متن کاملStudies on length-weight and length-length relationships of a catfish Eutropiichthyes vacha Hamilton (Schilbeidae: Silurifo-
Present study describes the length-weight (LWR) and length-length (LLR) relationships of a freshwater catfish Eutropiichthyes vacha Hamilton from Indus River, Sindh, Pakistan. A total of 281 specimen of E. vacha were collected from fisherman?s catch from February 2005 to January 2006, are used for this study. The parameters a and b of the length-weight relationship were calculated as W= aLb are...
متن کاملLength-weight and length-length relationships, Relative condition factor and Fulton?s condition factor of Five Cyprinid species in Anzali wetland, southwest of the Caspian Sea
This study was conducted to determine length-weight and length-length relationships, relative condition factor (Krel) and Fulton?s condition factor (K) for five species including Scardinius erythrophtalmus, Carassius auratus gibelio, Cyprinus carpio, Tinca tinca and Hemiculter leucisculus belonging to Cyprinidae family. Fish sampling was carried out by gill net and fyke net in the western regio...
متن کاملstudies on length-weight and length-length relationships of a catfish eutropiichthyes vacha hamilton (schilbeidae: silurifo-
present study describes the length-weight (lwr) and length-length (llr) relationships of a freshwater catfish eutropiichthyes vacha hamilton from indus river, sindh, pakistan. a total of 281 specimen of e. vacha were collected from fisherman?s catch from february 2005 to january 2006, are used for this study. the parameters a and b of the length-weight relationship were calculated as w= alb are...
متن کاملGrowth parameters, mortality rates, yield per recruit, biomass, and MSY of Rutilus frisii kutum, using length frequency analysis in the Southern parts of the Caspian Sea
The growth and mortality coefficient of Rutilus frisii kutum, were estimated using length frequency data collected in southern waters of the Caspian Sea during October 2008 to April 2009. The following population parameters were evaluated: length-weight relationship, W = 0.004L 3.258, (r= 0.976) Von Bertalanffy growth constants, W∞ (g) = 4192.3, L∞ (cm) = 70.45, K = 0.2, per year t0 = −0.75 tot...
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ژورنال
عنوان ژورنال: Journal of Fish Biology
سال: 2000
ISSN: 0022-1112,1095-8649
DOI: 10.1111/j.1095-8649.2000.tb00870.x