Latitudinal variation in reproductive biology and growth of female Dover sole (Microstomus pacificus) in the North Pacific, with emphasis on the Gulf of Alaska stock

Abookire, Alisa A.; Macewicz, Beverly J.

doi:10.1016/s1385-1101(03)00062-5

Cited by 15 publications

(11 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The differences between the values of length at first gonadal maturation for one species in different seasons might be mainly associated with the geographical location of the studied populations. This phenomenon has already been observed in other species such as Micropogonias furnieri (Vazzoler 1991), Salvelinus leucomaenis (Morita and Morita 2002) and Microstomus pacificus (Abookire and Macewicz 2003).…”

Section: Discussionsupporting

confidence: 67%

Aspects of the reproduction ofMugil curemaValenciennes, 1836 in two coastal systems in southeastern Brazil

Fernandez

Dias

2013

Tropical Zoology

View full text Add to dashboard Cite

This study aims at studying the reproductive aspects of Mugil curema in two coastal systems in southeastern Brazil. Samplings were carried out from March 2009 to February 2010 in Santos estuary and from May 2008 to April 2009 in the Cananéia-Iguape coastal system, using gillnet, cast net, and fish trap. Weight and total length were measured and, subsequently, gonads were removed and weighed. Permanent preparations on the ovaries were carried out. The sexual proportion, first gonadal maturation length (L 50 ), and the quantitative indicators (gonadosomatic index and DK) were estimated for all seasons of the year. There was a significant predominance of females (1:2.4) in both areas, and L 50 was estimated at 248.6 mm. The species showed a synchronous oocyte development and the highest values of quantitative indicators were observed at the start and end of the rainy season. The mean potential and relative fecundity of the species was estimated at 350,430 oocytes and 926.46 oocytes/g, respectively, for individuals ranging from 300 to 402 mm. In conclusion, M. curema from the Cananéia-Iguape coastal system and from Santos estuary showed the start of gonadal maturation in October, which extended to April, with two annual spawning events (April and November), possibly in more offshore areas.

show abstract

Section: Discussionsupporting

confidence: 67%

Aspects of the reproduction ofMugil curemaValenciennes, 1836 in two coastal systems in southeastern Brazil

Fernandez

Dias

2013

Tropical Zoology

View full text Add to dashboard Cite

show abstract

“…Fish maturity can be influenced by a number of factors including size, age, geographical distribution, latitudes and fishing mortality (Roff, 1981;Rijnsdorp, 1993;Bromley, 2000;Heino and Godø, 2002). The variation of L 50 is most likely due to differences in growth rate across latitudes, which has also been reported for many other fish species (e.g., Vila-Gispert et al, 2002;Abookire and Macewicz, 2003;Morita and Nagasawa, 2010). The larger values of length and age at 50% maturity in higher latitudes correspond to faster growth rates (Abookire and Macewicz, 2003); likewise, in Anzali Wetland the growth rate is slower, as previously discussed, and L 50 and A 50 are reached at a smaller size and a younger age.…”

Section: Growth and Maturitysupporting

confidence: 62%

Demographic variables and stock status of pike,Esox lucius, in the commercial fishery in the Anzali Wetland (SW Caspian Sea) near the southern limits of its distribution range

Moslemi-Aqdam

Namin

Sattari

et al. 2017

Aquat. Living Resour.

View full text Add to dashboard Cite

The demographic variables of pike (Esox lucius) were studied at the southern edge of the species' distribution in the Anzali Wetland, south-western Caspian Sea. The main aim was to provide data for the assessment of the stock and to explore possible fisheries management measures such as setting minimum landing size based on length-at-maturity. Pike collected from commercial landings ranged from 15.4 to 75.4 cm in fork length (FL), from 52.9 to 3462.5 g in weight and were between 0 and 8 years old. Von Bertalanffy growth function parameters were L ∞ = 90.6 cm FL, k = 0.12 yr À1 and t 0 = À1.74 yr À1 . Male pike matured at 1-2 years with L 50 of 28.6 cm FL, whereas females matured at 2-3 years with a L 50 of 33.9 cm FL. Instantaneous total mortality (Z) was estimated as 0.93 yr À1 , while fishing mortality (F) was estimated to be 0.66 yr À1 . Yield-per-recruit analysis indicated that pike in the Anzali Wetland seems to be growthoverfished under the current fishing regime with no management measures, and substantial increases in yield could be achieved by increasing the length at first harvest. The results indicated that management actions such as enforced legislation are required to obtain a better stock status and higher yield. Management could be more effective if the number of fishers and their catch could be controlled, e.g., through the allocation of fishing licenses.

show abstract

“…Therefore, other environmental factors such as salinity, food conditions or predation pressure could also control the M. surmuletus growth rate. Abookire and Macewicz (), relating a latitudinal gradient in growth rates of the Dover sole ( Microstomus pacificus ), suggested that growth was strongly influenced by geographic variations in physical and environmental habitats.…”

Section: Discussionmentioning

confidence: 99%

Striped red mullet (Mullus surmuletus , Linnaeus, 1758) in the eastern English Channel and southern North Sea: growth and reproductive biology

et al. 2013

View full text Add to dashboard Cite

Summary Biological information is necessary for population structure assessment of economically important species. There are no known published studies on the age and reproduction of Mullus surmuletus in the north of the Bay of Biscay. The aim of this study was to estimate growth and reproductive biology of this species in the eastern English Channel and southern North Sea from 1089 individuals, observed from February to December 2004. The length–weight relationship was described by the parameters: a = 3.284.10−6 and b = 3.243, being allometrically positive. Ages were determined from increments of otoliths, used entirely after a burning treatment. Marginal‐increment analysis showed an annual periodicity of increment formation. Von Bertalanffy growth equations were estimated as TLt = 51.2(1−e−0.19(t+2.904)) for females and TLt = 36.0(1−e−0.218(t+3.232)) for males. Comparing the observed growth performance index (φ′ = 2.676) from others studies, a positive growth gradient was suggested for M. surmuletus from south to north of its distribution area. Females grew significantly faster and reached a larger size at age than males. Length at 50% maturity was 16.9 and 16.2 cm, respectively, for females and males, corresponding to an estimated age of 1 year for both sexes. In the eastern English Channel, according to both the gonadosomatic indices (GSI) and maturity stages, the observed spawning period of M. surmuletus was from May to July. The present description of the red mullet life history characteristics in this region may constitute a preliminary step to future population dynamics modelling and stock assessment exercises.

show abstract

Latitudinal variation in reproductive biology and growth of female Dover sole (Microstomus pacificus) in the North Pacific, with emphasis on the Gulf of Alaska stock

Cited by 15 publications

References 7 publications

Aspects of the reproduction ofMugil curemaValenciennes, 1836 in two coastal systems in southeastern Brazil

Aspects of the reproduction ofMugil curemaValenciennes, 1836 in two coastal systems in southeastern Brazil

Demographic variables and stock status of pike,Esox lucius, in the commercial fishery in the Anzali Wetland (SW Caspian Sea) near the southern limits of its distribution range

Striped red mullet (Mullus surmuletus , Linnaeus, 1758) in the eastern English Channel and southern North Sea: growth and reproductive biology

Contact Info

Product

Resources

About