Morphological and developmental studies on the eggs of four Coryphopterus species [Actinopterygii: Gobiidae] in the Caribbean Sea

• Autorzy: Kramer A , Patzner R.A.
• Języki publikacji: EN

Abstrakty

EN

Background. Morphology of eggs and embryonic development of the genus Coryphopterus are documented for the first time. The species C. venezuelae, C. dicrus, C. eidolon, and C. thrix have been found to have a similar ecology, but details about their reproduction are still unclear. The aim of the present study was to investigate if egg morphology, mode of attachment, and development differ between the species; which could be attributed to use of different microhabitats and/or resources. Materials and Methods. Fish were kept in aquaria and their eggs were collected every 6 h. Embryonic development in the eggs was documented under a dissecting microscope. Additionally egg morphology and mode of egg attachment were studied by a scanning electron microscope. Results. The time of embryonic development was 66 h in all species. Egg dimensions were 0.7–1.1 mm in length and 0.3–0.5 mm in width. The eggs were attached to the substrate by an adhesive apparatus typical for gobiids, a net like structure around the micropylar pole, and composed of filaments, 1.5–2.2 μm in diameter. The zona radiata was of 0.5–0.8-μm thick. Conclusion. No differences in the period of embryonic development, egg shape or means of attachment could be found between the species studied, but variations in egg dimensions and their attaching structures were noted. The zona radiata is very thin in comparison to other fish eggs, though comparative data of fish with a similar ecology are needed.

Słowa kluczowe

PL

Actinopterygii; Gobiidae; Caribbean Sea; Coryphopterus; embryonic development; scanning electron microscope; egg; morphology; egg dimension; fish; Coryphopterus dicrus

• Wydawca: -
• Czasopismo: Acta Ichthyologica et Piscatoria
• Rocznik: 2008
• Tom: 38
• Numer: 2
• Strony: 97-102
• Opis fizyczny: p.97-102,fig.,ref.

Twórcy

autor

Kramer A

• Department of Organismic Biology, University of Salzburg, Salzburg, Austria

autor

Patzner R.A.

Bibliografia

• Baldwin C.C., Smith D.G. 2003. Larval Gobiidae (Teleostei:Perciformes) of Carry Bow Cay, Belize, Central America.Bulletin of Marine Science 72: 639–674.
• Breining P., Britz T. 2000. Egg structure of three clingfish species, using scanning electron microscopy. Journal of Fish Biology 56: 1129–1137.
• Cole K.S., Robertson D.R. 1988. Protogyny in the Caribbean reef goby, Coryphopterus personatus: gonad ontogeny and social influences on sex change. Bulletin of Marine Science 42:317–333.
• Colin P.L. 1975. The neon gobies: The comparative biology of the genus Gobiosoma, subgenus Elacatinus, (Pisces:Gobiidae) in the Tropical Western North Atlantic Ocean.T.F.H. Publications. Neptune, New Jersey.
• Faria C., Borges R., Gil F., Almada V.C., Gonçalves E.J.2002. Embryonic and larval development of Lipophrys polis (Pisces: Blenniidae). Scientia Marina 66: 21–26.
• Giulianini P.G., Ferrero E.A. 2000. Ultrastructural aspects of the ovarian follicle and egg envelope of the sea-grass goby Zosterisessor ophiocephalus (Osteichthyes, Gobiidae).Italian Journal of Zoology 68: 29–37.
• Giulianini P.G., Ota D., Marchesan M., Ferrero E.A. 2001.Can goby spermatozoa pass through the filament adhesion apparatus of laid eggs? Journal of Fish Biology 58:1750–1752.
• Herler J., Patzner R.A., Hilgers H. 2006. Notes on the egg envelope and number of oocytes in two Gobius species (Teleostei: Gobiidae) from the northern Adriatic. Zeitschrift für Fischkunde 8: 1–7.
• Kanabashira Y., Sakai H., Yasuda F. 1980. Early development and reproductive behaviour of the gobiid fish,Mugiologobius abei. Japanese Journal of Ichthyology 27:191–198.
• Miller P.J. 1984. The tokology of gobioid fishes. Pp. 119–153.In: Potts G.W., Wotton R.J. (eds.). Fish reproduction.Strategies and tactics. Academic Press, London.
• Mooi R.D. 1990. Egg surface morphology of pseudochromoids (Perciformes: Percoidei), with comments on its phylogenetic implications. Copeia 2: 455–475.
• Patzner R.A. 1984. The reproduction of Blennius pavo (Teleostei, Blennidae). II. Surface structure of the ripe egg.Zoologischer Anzeiger 213: 44–50.
• Privitera L.A. 2001. Characteristics of egg and larval production in captive bluespotted gobies. Journal of Fish Biology 58:1211–1220. DOI:10.1006/jfbi.2000.1527.
• Riehl R. 1995. Die Eier und Eihüllen von Knochenfischen.Pp.11–16. In: Greven H., Riehl R. (eds.) Fortpflanzungsbiologie der Aquarienfische. Birgit Schmettkamp Verlag,Bornheim.
• Riehl R., Greven H. 1993. Fine structure of egg envelopes In some viviparous goodeid fishes with comments on the relation of envelope thinness to viviparity. Canadian Journal of Zoology 71: 91–97.
• Riehl R., Patzner R.A. 1998:Minireview: The modes of attachment in eggs of teleost fishes. Italian Journal of Zoology 65:415–420.
• Rombough P.J. 1988. Respiratory gas exchange, aerobic metabolism, and effects of hypoxia during early life. Pp.59–161. In: HoarW.S., Randall A.J. (eds.) Fish physiology.Vol. XI, Part A. Academic Press, New York.
• Sponaugle S., Cowen R.K. 1994. Larval durations and recruitment patterns of two Caribbean gobies (Gobiidae): contrasting early life histories in demersal spawners. Marine Biology 120: 133–143.
• Takahashi S. 1978. The adherent filaments of the eggs of Isaza (Chaenogobius isaza Tanaka, Pisces). ZoologicalMagazine 87:216–220.
• Tamada K., Iwata K. 2005. Intra-specific variations of egg size,clutch size and larval survival related to maternal size In amphidromous Rhinogobius goby. Environmental Biology of Fishes 73: 379–389. DOI:10.1007/s10641-005-2230-8.
• Thresher R.E. 1984. Reproduction in reef fishes. T.F.H.Publications Inc., Ltd., Neptune City.
• Victor B. 2007. Coryphopterus kuna, a new goby (Perciformes:Gobiidae: Gobiinae) from the western Caribbean, with the identification of the late larval stage and an estimate of the pelagic larval duration. Zootaxa 1526: 51–61.
• Victor B. 2008. Redescription of Coryphopterus tortugae (Jordan)and a new allied species Coryphopterus bol (Perciformes:Gobiidae: Gobiinae) from the tropical western Atlantic Ocean.Journal of the Ocean Science Foundation 1: 1–19.