HOLOTHURIA FLORIDANA PDF

Print Send Add Share. Notes General Note: Holothuria floridana is found throughout the Florida Keys, USA with different distributional patterns occurring between large and small phenotypes. Their abundances are high in seagrass beds, where they can significantly reduce benthic microalgae. Environmental variables and sediment characteristics also correlate with their distribution and abundances in these areas. To understand their morphological adaptations, ossicles and reproductive organs were compared. Large and small H.

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We'd like to understand how you use our websites in order to improve them. Register your interest. A total of specimens were collected. Percentage of the gonad weight to the gutted body weight gonad index, GI increased steadily from December to April, rapidly declined in May, and remained low during the following months. GI displayed a negative correlation with temperature of the habitat and no correlation with salinity.

The gonad maturity scale with five stages was developed from macroscopic and microscopic observations; I, recovery; II, growing; III, early mature; IV, mature and V, spent.

Stages III to V were observed all around the year, suggesting that this species displays continuous reproduction with two peaks of spawning events; from March to April and in September. The presence of viscera regurgitated individuals caused high variability in GI. The sex-ratio varied from December to June , to 1. The body length and body weight at the first maturity were calculated to be For resource management it will be necessary to address some reference points like harvest season and avoidance of catches shorter than length at first maturity.

This is a preview of subscription content, log in to check access. Google Scholar. Poot-Salazar A Growth, reproduction and feeding habits of Isostichopus badionotus Selenka, Echinodermata: Holothuroidea from the western coasts of Yucatan State, doctoral dissertation. Conand C Reproductive biology of the holothurians from the major communities of the New Caledonian lagoon. Mar Biol — Bull Mar Sci 52 3 — H mexicana and their hybrids Echinodermata: Holothuroidea in southern Florida.

Invertebr Reprod Dev — Rev Soc Mex His Nat — Hidrobiologica —69 In Spanish. Smithsonian Institution, Washington. Conand C Les ressources halieuthiques des pays insulaires du Pacifique.

Biol Bull — Conand C Sexual cycles of three commercially important holothurian species Echinodermata from the lagoon of New Caledonia. Bull Mar Sci — Boolootian RA Reproductive Physiology. Wiley-Interscience, New York, pp — Conand C Reproductive cycle and biometric relations in a population of Actinopyga echinites Echinodermata: Holothuroidea from the lagoon on New Caledonia, western tropical Pacific.

In: Lawrence JM ed Proc. Echinoderm Conf. Univ, South Florida, Tampa, Florida, pp — Conand C The fishery resources of Pacific island countries. Part 2: Holothurians. Aust J Mar Freshw Res — Invertebr Reprod Dev —7. In: Giese AC et al eds Reproduction of marine invertebrates. Boxwood Press, Pacific Grove, pp — Mexico Bull Mar Sci 68 1 — Muthiga NA The reproductive biology of a new species of sea cucumber, Holothuria Mertensiothuria arenacava in a Kenyan marine protected area: the possible role of light and temperature on gametogenesis and spawning.

Estuar Coast Shelf Sci — Russ J Mar Biol 5—— Gonor JJ Gonad growth in the sea urchin, Strongylocentrotus purpuratus Stimpson Echinodermata: Echinoidea and the assumptions of gonad index methods. J Exp Mar Biol Ecol — Invertebr Reprod Dev. Guam Bull Mar Sci 63 1 :1—9. I Reproductive periodicity and spawning behavior. Can J Zool — Science — Indian Ocean. J Mar Sci — Sci Mar — Aquac Int — Byrne M The morphology of autotomy structues in the sea cucumber Eupentacta quinquesemita before and during evisceration.

J Exp Biol — Oceanogr Mar Biol — Byrne M The ultrastucture of the morula cells of Eupentacta quinquesemita Echinodermata Holothuroidaea and their role in the maintenance of the extracellular matrix. J Morphol — Shinn GL Reproduction of Anoplodium hymanae , a turbellarian flatworm Niophabdocoela, Umagillidae inhabiting the coelom of sea cucumbers: production of egg capsules, and escape of infective stages without evisceration of the host.

Zoomorphology — Ecuador Mar Biol — Biometrika — J Anim Prod Adv 2 2 — Final Report. Egyptian J Aqua Res — Autonomous University of Baja California. Cienc Mar — In Spanish. Bull of Mar Sci — Doctoral Dissertation in Marine Sciences. National Polytechnic Institute. Turkish J Zool — Download references. Flores Ramos who supported this work through sample collection. Correspondence to Julia Ramos-Miranda. Reprints and Permissions.

Ramos-Miranda, J. Reproductive cycle of the sea cucumber Holothuria floridana in the littorals of Campeche, Mexico. Fish Sci 83, — Download citation. Received : 15 July Accepted : 19 May Published : 26 June Issue Date : September Search SpringerLink Search.

References 1. Roma You can also search for this author in PubMed Google Scholar. View author publications. Electronic supplementary material. Rights and permissions Reprints and Permissions. About this article.

Cite this article Ramos-Miranda, J.

BEGG FISCHER DORNBUSCH EKONOMIA MAKROEKONOMIA PDF

Florida sea cucumber

We'd like to understand how you use our websites in order to improve them. Register your interest. A total of specimens were collected. Percentage of the gonad weight to the gutted body weight gonad index, GI increased steadily from December to April, rapidly declined in May, and remained low during the following months. GI displayed a negative correlation with temperature of the habitat and no correlation with salinity.

GROUNDWATER AND SEEPAGE HARR PDF

The Florida sea cucumber Holothuria floridana , is a species of marine invertebrate in the family Holothuriidae. It is found on the seabed just below the low tide mark in Florida , the Gulf of Mexico , the Bahamas and the Caribbean. It has an elongated cylindrical shape with a tough, leathery skin with blunt conical protuberances. On the underside it has several rows of short tube feet. On one end is the mouth surrounded by a ring of feeding tentacles. The body colour is mottled brown, fawn and white. The Florida sea cucumber moves across the sandy seabed sifting through the sand with its tentacles and feeding on detritus and other organic particles.

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