Comportamiento reproductivo del pez Opistognathus rosenblatti (Perciformes: Opistognathidae) en cautiverio

Contreras, Mauricio; Anguas, Benjamín; González, Pedro G.; Martínez, Rodolfo E.

dc.creator	Contreras, Mauricio
dc.creator	Anguas, Benjamín
dc.creator	González, Pedro G.
dc.creator	Martínez, Rodolfo E.
dc.date	2012-11-16
dc.date.accessioned	2016-05-03T15:29:25Z
dc.date.available	2016-05-03T15:29:25Z
dc.identifier	http://revistas.ucr.ac.cr/index.php/rbt/article/view/1808
dc.identifier	10.15517/rbt.v60i3.1808
dc.identifier.uri	https://hdl.handle.net/10669/26629
dc.description	Reproductive behavior of Opistognathus rosenblatti (Perciformes: Opistognathidae) in captivity. The Blue Spotted Jawfish O. rosenblatti, is an endemic species from the Gulf of California, included in the local list of protected species. With few biological reports, this species is appreciated in the aquarium industry due to its coloration and digging behaviour, and has a considerable value. With the aim to generate valuable biological information, eight fishes were caught at Loreto Natural Marine Protected Area. Captured fishes were juveniles, and just three of them were kept in an aquarium conditioned with gravel, pieces of shells and coral as substrata. Temperature and photoperiod conditions were stable, and they were supplied with a variety of live and inert feeds. Fishes reached maturity in eight months, according to literature reports, displaying mature male courtship coloration and upward movements in the water column. Fishes spawned several times over more than two years in captivity. Presences of egg masses, or some evidence of egg shell or larvae, were registered in 50 occasions. Male took care of eggs in his shelter, but never in his mouth. Egg masses had an average of 3 592 eggs, with a hatching rate close to 99%. Eggs were apparently rounded having three diameter measurements with significant differences (1.17mm mean higher diameter, SD=0.054; 1.13mm mean lower diameter, 0.058; 0.99mm mean height, 0.045; n=125). Most of corion eggs had four, rarely six filaments; with a single oil drop (0.30mm mean diameter, 0.021, n=59). Incubation lasted 10.4 days (9-14), depending on water temperature (21.0-25.3°C). Egg hatching occurred after darkness, emerging newly hatched larvae of 4.51mm mean notochord length (0.082, n=30), with reserves exhausted, eyes pigmented and mouth opened, ready to eat. This study represents the first report on this species courtship displaying, spawning and some basic characteristics of eggs masses and larvae in captivity. Also, their flexibility and adaptability of individual behaviour to particular environment conditions, lead to consider worth their commercial culture, as already occur with other species of this family.	en-US
dc.description	El bocón manchas azules O. rosenblatti, es una especie endémica del Golfo de California con un elevado valor comercial, del cual existe poca información referente a su biología. Los peces alcanzaron la edad adulta después de ocho meses de cautiverio. Manifestaron ascensos en la columna de agua, típicos de los desplantes de cortejo en su hábitat natural. Asimismo se registro en 50 ocasiones la presencia de masas ovígeras o alguna evidencia de desove. El macho cuidó los huevos dentro de su refugio, pero nunca en su cavidad bucal. En promedio, depositaron 3 592 huevos, con una viabilidad de eclosión superior al 99%. La eclosión se da de noche y se liberan larvas de 4.51mm de longitud promedio del notocordio. Este estudio presenta el primer registro de su cortejo, su desove e información sobre características elementales de las masas ovígeras y sus larvas, las cuales fueron obtenidas en cautiverio. De tal manera que, la flexibilidad y adaptabilidad de su comportamiento individual a condiciones particulares del ambiente, significan que vale la pena su cultivo comercial, como ya se realiza con otras especies de la misma familia.	es-ES
dc.format	application/pdf
dc.language	spa
dc.publisher	Universidad de Costa Rica	en-US
dc.rights	Copyright (c) 2014 International Journal of Tropical Biology and Conservation	en-US
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 60 (3) September 2012	en-US
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 60 (3) September 2012	es-ES
dc.source	Revista Biología Tropical; Vol. 60 (3) September 2012	pt-PT
dc.source	2215-2075
dc.source	0034-7744
dc.source	10.15517/rbt.v60i3
dc.subject	opistognathus rosenblatti	en-US
dc.subject	jaw fish	en-US
dc.subject	ornamental fish	en-US
dc.subject	courtship	en-US
dc.subject	reproduction	en-US
dc.subject	spawning	en-US
dc.subject	opistognathus rosenblatti	es-ES
dc.subject	bocón manchas azules	es-ES
dc.subject	pez de ornato	es-ES
dc.subject	cortejo	es-ES
dc.subject	reproducción	es-ES
dc.subject	desove	es-ES
dc.title	Comportamiento reproductivo del pez Opistognathus rosenblatti (Perciformes: Opistognathidae) en cautiverio	en-US
dc.title	Comportamiento reproductivo del pez Opistognathus rosenblatti (Perciformes: Opistognathidae) en cautiverio	es-ES
dc.type	artículo original

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