Reproductive Cycle and Size at First Maturity in Females of Brown Crab Callinectes Bellicosus (Stimpson 1859) in the Southwestern Gulf of California, Mexico

The brown sea cucumber Isostichopus fuscus is highly prized and intensively fished, yet no studies of its reproductive cycle at its northernmost distribution site exist. To characterize its reproductive cycle, monthly surveys (Oct 2014-Dec 2016) that included gonad collection were conducted in 118 sites along the eastern coast of Baja California, including islands from Bahía San Luis Gonzaga (29o 49’ 14.18” N, 114 o 3’56.17” W) to the 28th parallel north. A total of 2 808 sea cucumber specimens were measured (mean length ± SD = 21.4 ± 6 cm) and weighed (375.6 ± 249 g). Seven hundred and seventeen organisms were dissected but only 553 gonads were suitable for processing through histological analysis to identify sex and developmental stage. Of these individuals, 224 were female, 162 were male, 157 were undifferentiated and 10 were hermaphrodites, resulting in a sex ratio that was significantly different from 1:1 (χ2 = 36.63, P = 0.03, df = 23). There was no statistical difference (p > 0.05) of either size or weight between males and females, but females were larger than males. The length-weight relationship observed was W = 0.18L2.4, r2 = 0.82, p <0.05 while the size-at-first-maturity was 16 cm. Five gonad stages were identified: 28% undifferentiated, 9% gametogenesis, 15% mature, 19% expulsion and 29% post-expulsion. The Oocyte Theoretical Diameter (OTD) was estimated by measuring the area of 10 291 oocytes, finding 2 307 individuals in oogenesis (mean ± SD of 65.3 ± 19.7 µm), 3 630 in maturity (66.0 ± 17.8 µm), 3 756 in spawning (73.8 ± 14.6 µm) and 868 in post-spawning (49.18 ± 20.7 µm). Modal progression analysis shows that oocytes increase 23% in size from oogenesis to maturity, and decrease 9%in size from maturity to spawning and, on average, oocytes are 72% smaller post-spawning that during spawning. Rev. Biol. Trop. 65(Suppl. 1): S180-S196. Epub 2017 November 01.

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Population structure of the crab Callinectes ornatus Ordway, 1863 (Brachyura: Portunidae) bycatch in shrimp fishery in northern Rio de Janeiro state, Brazil

Biota Neotropica ◽

10.1590/s1676-06032012000100007 ◽

2012 ◽

Vol 12 (1) ◽

pp. 93-98 ◽

Cited By ~ 6

Author(s):

Caroline Cabral Tudesco ◽

Laís Pinho Fernandes ◽

Ana Paula Madeira Di Beneditto

Keyword(s):

Population Structure ◽

Rio De Janeiro ◽

Carapace Width ◽

Age Group ◽

Shrimp Fishery ◽

First Maturity ◽

Janeiro State ◽

Over Time ◽

Swimming Crabs ◽

Size At First Maturity

This study provides the first data on the population structure of swimming crab Callinectes ornatus Ordway, 1863 bycatch from coastal shrimp fishing in northern Rio de Janeiro State, Brazil (21º 30'-21º 50' S and 41º 05'-41º 07' W). Crabs were collected monthly from April 2006 to March 2007. A total of 5,611 specimens were analyzed, of which 3,951 were males and 1,660 ovigerous and non-ovigerous females. The overall sex ratio (2:1) differ significantly from the expected 1:1 proportion, being the mature males significantly predominant as bycatch in this fishery. The specimens' carapace width and weight varied from 27 to 126 mm (mean: 77.3 ± 12.3 mm) and 1.2 to 128.2 g (mean: 31.0 ± 14.4 g) for males, and 30 to 101 mm (mean: 63.4 ± 9.3 mm) and 1.7 to 66.0 g (mean: 16.4 ± 7.4 g) for ovigerous and non-ovigerous females. Seasonal comparisons did not reveal differences between the number of specimens captured in dry and rainy periods considering both sexes and maturity stages. The size at first maturity was 79 mm for males and 65 mm for females, and the carapace width-weight relationship indicated an alometric pattern for both sexes. The bycatch swimming crabs are locally used as bait, but the capture tendency for a specific sex/age-group can affect this population structure over time.

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Reproduction and community structure of fish from winter shrimp bycatch from the Southeast Gulf of California

10.7287/peerj.preprints.3274v1 ◽

2017 ◽

Author(s):

Jorge de Jesus Tirado-Ibarra ◽

Mariany Loya-Rodriguez ◽

Jose Carlos Morales-Arevalo ◽

Isabel Rosario Muñoz-Garcia ◽

Jorge Saul Ramirez-Perez ◽

...

Keyword(s):

Community Structure ◽

Fish Species ◽

Gulf Of California ◽

Target Species ◽

Importance Value Index ◽

Importance Value ◽

Shrimp Fishery ◽

Average Size ◽

First Maturity ◽

Size At First Maturity

Shrimp fishery is one of the most important fisheries of the world. However, the low selectivity from trawl nets leads the capture of a large number of non-target species. Shrimp bycatch include a large number of fish and invertebrate species; of which fish species are the most abundant. The present study aims to determine the community structure as well as the average sizes at first maturity of the fish species from shrimp bycatch caught from industrial fisheries at the southeast of the Gulf of California from Sinaloa to Guerrero, Mexico; from January to March 2015. A total of 37 species of finfish were found; of which five were considered rare. The fish species with the highest Importance Value Index (IVI) were Pseudupeneus grandisquamis, Paralichthys woolmani, Lutjanus peru y Diapterus peruvianus. The average size at first maturity of 12 fish species was determined; nine of which have not been previously reported. Of the analyzed organisms 90% were in juvenile stage; including species with riverine and artisanal fisheries. The present study demonstrates the risk in marine populations of different non-target species due to the low selectivity of shrimp trawls.

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Growth, reproduction, and size at first maturity of blue shrimp, Litopenaeus stylirostris (Stimpson, 1874) along the east coast of the Gulf of California, Mexico

Fisheries Research ◽

10.1016/j.fishres.2004.06.004 ◽

2005 ◽

Vol 71 (1) ◽

pp. 93-102 ◽

Cited By ~ 15

Author(s):

Juana López-Martínez ◽

Carlos Rábago-Quiroz ◽

Manuel O. Nevárez-Martínez ◽

Alma Rosa García-Juárez ◽

Gabriel Rivera-Parra ◽

...

Keyword(s):

Gulf Of California ◽

East Coast ◽

First Maturity ◽

Size At First Maturity

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Reproductive cycle and gonadal development of Macquarie perch, Macquaria australasica Cuvier (Percichthyidae), in Lake Dartmouth and tributaries of the Murray - Darling Basin, Victoria, Australia

Marine and Freshwater Research ◽

10.1071/mf97012 ◽

1998 ◽

Vol 49 (2) ◽

pp. 163 ◽

Cited By ~ 23

Author(s):

P. Appleford ◽

T. A. Anderson ◽

G. J. Gooley

Keyword(s):

Reproductive Cycle ◽

Gonadosomatic Index ◽

Gonadal Development ◽

Minimum Size ◽

Testicular Development ◽

Murray Darling Basin ◽

Eastern Australia ◽

Males And Females ◽

First Maturity ◽

Size At First Maturity

The gonadal development, reproductive cycle and growth of Macquarie perch, Macquaria australasica Cuvier, in Lake Dartmouth and selected tributaries of the Murray–Darling River Basin in south-eastern Australia were evaluated. Gonadosomatic index (GSI) and histological analysis were used to determine gonadal development and age and size at first maturity in the resident Lake Dartmouth population. GSI analysis was also used to determine age and size of Macquarie perch at first maturity in the inflowing Mitta Mitta River and other riverine populations within the Goulburn River catchment. Males appeared slightly smaller at first spawning than females at all sites; both sexes were fully mature at four years of age. Differences in size at first maturity were found between the lake and river populations; both males and females of river populations tended to mature at a much smaller size than the fish resident in the lake. Spawning occurred around November. Ovarian and testicular development in this species follows a pattern similar to that of other native Australian percichthyids. The implications for management of recreational fisheries based on minimum size regulations is discussed in relation to site-specific differences in growth rates and size of first maturity of fish.

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Reproductive cycle and gonadal development of Donax striatus (Bivalvia: Donacidae) on an Amazon sandy beach in northern Brazil

Scientia Marina ◽

10.3989/scimar.04823.15a ◽

2019 ◽

Vol 83 (1) ◽

pp. 31

Author(s):

Ewertton Gadelha ◽

Elton Silva ◽

Rosana Silva ◽

Shirley Rafael ◽

Fábio Pamplona ◽

...

Keyword(s):

Organic Matter ◽

Reproductive Cycle ◽

Sandy Beach ◽

Condition Index ◽

Gonadal Development ◽

Reproductive Period ◽

Tropical Environments ◽

Northern Brazil ◽

First Maturity ◽

Size At First Maturity

The reproductive cycle and gonadal development of Donax striatus from a sandy beach in Ajuruteua, Amazon region, were studied. Monthly sampling took place from March 2015 to April 2016. Histological analysis was performed on 420 individuals, and the oocyte diameters were determined from histological sections and used to determine the reproductive period. The population showed a balanced sex ratio (1:1) with a size at first maturity of 10.9 mm in males and 8.9 mm in females. The population showed r-strategist characteristics and continuous spawning, and the reproductive cycle showed no seasonal variation or significant relation with any environmental parameter. The organic matter was significantly higher in the rainy season. According to the generalized linear model analysis (GLM), only the condition index (CI) had a significant relationship with the organic matter of the sediment. The type of reproductive strategy adopted by D. striatus corroborates the global breeding hypotheses for species of tropical environments. For conservation, it should be recommended to harvest this species at a shell length above 13 mm.

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Reproduction and community structure of fish from winter shrimp bycatch from the Southeast Gulf of California

10.7287/peerj.preprints.3274 ◽

2017 ◽

Author(s):

Jorge de Jesus Tirado-Ibarra ◽

Mariany Loya-Rodriguez ◽

Jose Carlos Morales-Arevalo ◽

Isabel Rosario Muñoz-Garcia ◽

Jorge Saul Ramirez-Perez ◽

...

Keyword(s):

Community Structure ◽

Fish Species ◽

Gulf Of California ◽

Target Species ◽

Importance Value Index ◽

Importance Value ◽

Shrimp Fishery ◽

Average Size ◽

First Maturity ◽

Size At First Maturity

Shrimp fishery is one of the most important fisheries of the world. However, the low selectivity from trawl nets leads the capture of a large number of non-target species. Shrimp bycatch include a large number of fish and invertebrate species; of which fish species are the most abundant. The present study aims to determine the community structure as well as the average sizes at first maturity of the fish species from shrimp bycatch caught from industrial fisheries at the southeast of the Gulf of California from Sinaloa to Guerrero, Mexico; from January to March 2015. A total of 37 species of finfish were found; of which five were considered rare. The fish species with the highest Importance Value Index (IVI) were Pseudupeneus grandisquamis, Paralichthys woolmani, Lutjanus peru y Diapterus peruvianus. The average size at first maturity of 12 fish species was determined; nine of which have not been previously reported. Of the analyzed organisms 90% were in juvenile stage; including species with riverine and artisanal fisheries. The present study demonstrates the risk in marine populations of different non-target species due to the low selectivity of shrimp trawls.

Download Full-text