First results on spawning, larval rearing and growth of the wedge sole (Dicologoglossa cuneata) in captivity, a candidate species for aquaculture

2007 ◽  
Vol 16 (1) ◽  
pp. 69-84 ◽  
Author(s):  
Marcelino Herrera ◽  
Ismael Hachero ◽  
Montserrat Rosano ◽  
José Francisco Ferrer ◽  
José Manuel Márquez ◽  
...  
Keyword(s):  
Larval Rearing ◽  
Candidate Species ◽  
In Captivity ◽  
First Results

scholarly journals Captive breeding for conservation of Dussumier’s Catfish (Actinopterygii: Siluriformes: Clariidae: Clarias dussumieri) a Near Threatened endemic catfish of peninsular India

2017 ◽  
Vol 9 (7) ◽  
pp. 10380
Author(s):  
K. G. Padmakumar ◽  
L. Bindu ◽  
P. S. Sreerekha ◽  
Nitta Joseph ◽  
Anuradha Krishnan ◽  
...  
Keyword(s):  
Endemic Species ◽  
Captive Breeding ◽  
Rapid Decline ◽  
Larval Rearing ◽  
Pituitary Extract ◽  
Peninsular India ◽  
Hormonal Manipulation ◽  
In Captivity ◽  
Mean Size ◽  
Near Threatened

The peninsular Indian endemic Dussumier’s Catfish Clarias dussumieri once abundant in the wetlands and other water bodies of Kerala is now in rapid decline.  The present paper focuses on an approach towards the conservation of this rare catfish through artificial propagation.  Fishes were bred in captivity by the administration of fish pituitary extract at the rate of 20–40 mg.kg-1.  Spawning occurred after 12–14 hr of injection and fertilized eggs hatched after 16:30hr.  Larval rearing was carried out in cement cisterns and the larvae attained a mean size of 51.6±1.6mm in 60 days.  Since brooders of this species have become extremely rare in nature, the present study on captive breeding by hormonal manipulation methods without sacrificing the male fishes, assumes significance for conserving this endemic species.

scholarly journals Balancing under the high wire; a study into PTT antenna effects on the Common Guillemot Uria aalge

2016 ◽  
Author(s):  
Sylvie P Vandenabeele ◽  
Emily LC Shepard ◽  
Adam Grogan ◽  
Richard Thompson ◽  
Adrian C Gleiss ◽  
...  
Keyword(s):  
Uria Aalge ◽  
Common Guillemot ◽  
Critical Effect ◽  
In Captivity ◽  
First Results ◽  
The Common ◽  
The Impact

External tags fitted to diving birds can affect them in many ways with the most critical effect being an increase in drag. The effects of transmitters can be even more acute due to the presence of a protruding aerial. The study assesses the impact of PTT antenna on the behaviour and energetics of device-equipped guillemots (Uria aalge) in captivity. Birds with antenna-devices appeared to consume about 20% more energy than non-antenna birds during the descent phase of the dive. The balance of the birds while diving or resting on the water also appeared to be compromised by the presence of an antenna. Based on these first results and because transmitters are one of the most common methods used to track animals, it appears critical to determine what impact these devices, and particularly antenna, can have on their bearers and try minimize it.

scholarly journals Seed production and growth of Neopomacentrus cyanomos (Bleeker, 1856) in captivity

2016 ◽  
Vol 63 (3) ◽  
Author(s):  
M. V. Rohini Krishna ◽  
M. K. Anil ◽  
P. Neethu Raj ◽  
B. Santhosh
Keyword(s):  
Larval Growth ◽  
The Body ◽  
Larval Rearing ◽  
Larval Body ◽  
Body Depth ◽  
Dorsal Fin ◽  
Adult Pattern ◽  
Fin Rays ◽  
In Captivity ◽  
Body Colouration

Development of the regal demoiselle Neopomacentrus cyanomos (Bleeker, 1856) from egg to maturation and spawning stage is described using hatchery reared specimens. Larval rearing of N. cyanomos was carried out using zooplankton as the starting feed up to the 10th day post-hatch (dph). Larval and post-larval growth was studied for a period of 340 dph. Caudal fin rays began to develop from 8th dph and the larval body depth increased considerably from 9th dph onwards. Towards the 10th dph, at about 5.7 mm total length (TL) half of the specimens underwent notochord flexion. Larvae exhibited decreased transparency with increased pigmentation of the pre-anal body, characterised by presence of stellate melanophores. Towards 15th dph, the pectoral, pelvic, dorsal, anal and caudal fins were visible with fin rays. The soft dorsal fin started showing pigmentation from 20th dph onwards and the spinous dorsal from 30th dph onwards. Towards 30th day, black pigments were found distributed all over the body. Pigmentation steadily increased from 30th day onwards and the juveniles fully attained the adult pattern of body colouration by about 90-100 days. First spawning occurred on the 340th dph at a size of 64-73 mm TL.

Natural spawning and larval rearing of milkfish in captivity in Indonesia

Aquaculture ◽  
1988 ◽  
Vol 74 (1-2) ◽  
pp. 127-130 ◽  
Author(s):  
A. Prijono ◽  
Tridjoko ◽  
I.Nyoman Adiasmara Giri ◽  
A. Poernomo ◽  
W.E. Vanstone ◽  
...  
Keyword(s):  
Larval Rearing ◽  
Natural Spawning ◽  
In Captivity

The Cortez flounder Paralichthys aestuarius as a candidate species for aquaculture: First report on growth in captivity in response to varying dietary protein levels

Aquaculture ◽  
2014 ◽  
Vol 420-421 ◽  
pp. 225-230 ◽  
Author(s):  
Mayra L. González-Félix ◽  
Christian Minjarez-Osorio ◽  
Martin Perez-Velazquez ◽  
Guadalupe M. Suárez-Jiménez ◽  
Germán E. Ibarra-Garcíaparra
Keyword(s):  
Dietary Protein ◽  
First Report ◽  
Protein Levels ◽  
Candidate Species ◽  
In Captivity

scholarly journals Benedenia epinepheli (Yamaguti 1937), A Monogenean Parasite in Captive Broodstock of Grouper, Epinephelustauvina (Forskal)

2005 ◽  
Vol 18 (2) ◽  
Author(s):  
K.P. JITHENDRAN ◽  
K.K. VIJAYAN ◽  
S.V. ALAVANDI ◽  
M. KAILASAM
Keyword(s):  
Size Range ◽  
Acute Infection ◽  
The Body ◽  
Present Communication ◽  
Monogenean Parasite ◽  
Coastal Aquaculture ◽  
Candidate Species ◽  
In Captivity ◽  
Severe Infections ◽  
Monogenean Infection

Grouper (Epinephelus spp.) is one of the most economically important cultured marine fish in Asia, particularly in Thailand, Malaysia, Philippines, Singapore, Indonesia and Taiwan. Over 10 species of grouper fish have been cultured in the region. In India, greasy grouper fish, Epinephelus tauvina is gaining importance as a candidate species for marine and coastal aquaculture. A study conducted on wild and captive broodstock of grouper (size range, 15 - 40 cm; body weight 0.2 - 4 Kg) collected from sea near Chennai revealed infection with monogenean parasites in a large number of fishes (27%). The present communication is the summary of the prevalence, taxonomy and pathology of these infection encountered in E. tauvina and the containment strategies. Acute infection of ectoparasitic monogeneans, Benedenia sp. was observed in 19 wild grouper (E. tauvina) fish and 12 of the broodstock fish maintained in captivity. The parasite measured 2.05 - 3.29 x 0.66 - 1.33 mm and was found to infest the gills, fins and skin of the fish. Fishes with advanced infestation were characterized by erratic swimming behaviour and restlessness. The fish with severe infections had small focal haemorrhages on the body, which often resulted in secondary bacterial infection leading to the sloughing of the skin and excessive mucus secretion. A description of the parasite and its pathobiology is discussed. Successful treatment of monogenean infection was carried out by short bath treatment with 100 ppm formalin. Freshwater bath was found effective in dislodging the parasite from the fish. Hydrogen peroxide (150 ppm) bath was found to be effective but revival of parasite was observed after short bath.

scholarly journals Distribution and changes in the sbGnRH system in Rastrelliger brachysoma males during the breeding season

2021 ◽  
Vol 85 (3) ◽  
pp. 187-195
Author(s):  
Sinlapachai Senarat ◽  
Jes Kettratad ◽  
Wannee Jiraungkoorskul ◽  
Niwat Kangwanrangsan ◽  
Masafumi Amano ◽  
...  
Keyword(s):  
Luteinizing Hormone ◽  
Gonadosomatic Index ◽  
Follicle Stimulating Hormone ◽  
Testicular Development ◽  
Mrna Levels ◽  
Candidate Species ◽  
In Captivity ◽  
The Difference ◽  
Breeding Seasons ◽  
Stimulating Hormone

Rastrelliger brachysoma is a mariculture candidate species, but reproduction in captive fish has been problematic. This report examines the difference in the HPG axis, the neuroendocrine system and the development of reproductive tissues between captive vs. wild male R. brachysoma. The gonadosomatic index (GSI) of sexually mature male wild R. brachysoma was 1.12±0.34 and 1.94±0.26 during the non-breeding and breeding seasons, respectively. Captive R. brachysoma had a GSI of 1.88±0.17. All wild R. brachysoma were in the late spermatogenic stage irrespective of seasons. Immunostaining results showed that sbGnRH-immunoreactive neurons were distributed in three areas of the brain, namely the nucleus periventricularis, nucleus preopticus and nucleus lateralis tuberis. Follicle stimulating hormone and luteinizing hormone immunoreactivities were also observed in the pituitary gland. The levels of brain sbGnRH and GtH mRNA were not significantly different between the non-breeding and breeding seasons, but captive fish displayed (times or percent difference) lower mRNA levels than wild fish. These results suggest that these hormones control the testicular development in R. brachysoma and that the impaired reproduction in captivity may be due to their relative lower expression levels of follicle stimulating hormone and luteinizing hormone genes.

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