Luminous bacteria of a monocentrid fish (Monocentris japonicus) and two anomalopid fishes (Photoblepharon palpebratus and Kryptophanaron alfredi)

population sizes and growth within the light organs, and rates of release into the seawater

Margo Haygood, Bradley Tebo, K. H. Nealson

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The light organs of monocentrid and anomalopid fishes consist of bacteria-filled tubular invaginations of the epidermis which are connected to the surrounding seawater by ducts. We used the release of bacteria from the light organs to estimate bacterial rates of growth in the light organs. For one monocentrid fish (4 specimens of Monocentris japonicus collected at Jogashima, Japan in 1980) and for two anomalopid fishes (2 specimens each of Photoblepharon palpebratus collected at Sebu, Phillipines in 1981 and Grand Comore Island in 1975 and Kryptophanaron alfredi collected at Parguera, Puerto Rico in 1982) we measured rates of release of bacteria into the surrounding seawater and the bacterial population sizes in the light organs; from this information we calculated doubling times of bacteria in the light organs. In addition, we determined the luminescence of bacteria after their release into the seawater. For M. japonicus, two specimens released 1.1 to 6×106 and 2×107 bacteria h-1, respectively; the light organs contained about 1.5×108 bacteria. For P. palpebratus, one specimen released 2.2×108 bacteria h-1; a second specimen had light organs containing 5.2×109 bacteria. For K. alfredi, one specimen released 7×107 bacteria h-1 and had light organs containing 5.6×108 bacteria; a second specimen released 3.6×107 bacteria h-1 and had light organs containing 7.3×108 bacteria. Bacterial doubling times in the light organs of these three fishes were variable and ranged from 7.5 to 135 h in M. japonicus and 8 to 23 h in the anomalopids. Bacteria released from M. japonicus into the seawater remained viable, but bacteria from all of the fishes soon ceased to emit light.

Original languageEnglish (US)
Pages (from-to)249-254
Number of pages6
JournalMarine Biology
Volume78
Issue number3
DOIs
StatePublished - Feb 1984
Externally publishedYes

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population size
population growth
seawater
bacterium
bacteria
fish
Monocentris
organ
rate
luminescence
epidermis (animal)
Puerto Rico
Japan

ASJC Scopus subject areas

  • Aquatic Science

Cite this

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title = "Luminous bacteria of a monocentrid fish (Monocentris japonicus) and two anomalopid fishes (Photoblepharon palpebratus and Kryptophanaron alfredi): population sizes and growth within the light organs, and rates of release into the seawater",
abstract = "The light organs of monocentrid and anomalopid fishes consist of bacteria-filled tubular invaginations of the epidermis which are connected to the surrounding seawater by ducts. We used the release of bacteria from the light organs to estimate bacterial rates of growth in the light organs. For one monocentrid fish (4 specimens of Monocentris japonicus collected at Jogashima, Japan in 1980) and for two anomalopid fishes (2 specimens each of Photoblepharon palpebratus collected at Sebu, Phillipines in 1981 and Grand Comore Island in 1975 and Kryptophanaron alfredi collected at Parguera, Puerto Rico in 1982) we measured rates of release of bacteria into the surrounding seawater and the bacterial population sizes in the light organs; from this information we calculated doubling times of bacteria in the light organs. In addition, we determined the luminescence of bacteria after their release into the seawater. For M. japonicus, two specimens released 1.1 to 6×106 and 2×107 bacteria h-1, respectively; the light organs contained about 1.5×108 bacteria. For P. palpebratus, one specimen released 2.2×108 bacteria h-1; a second specimen had light organs containing 5.2×109 bacteria. For K. alfredi, one specimen released 7×107 bacteria h-1 and had light organs containing 5.6×108 bacteria; a second specimen released 3.6×107 bacteria h-1 and had light organs containing 7.3×108 bacteria. Bacterial doubling times in the light organs of these three fishes were variable and ranged from 7.5 to 135 h in M. japonicus and 8 to 23 h in the anomalopids. Bacteria released from M. japonicus into the seawater remained viable, but bacteria from all of the fishes soon ceased to emit light.",
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N2 - The light organs of monocentrid and anomalopid fishes consist of bacteria-filled tubular invaginations of the epidermis which are connected to the surrounding seawater by ducts. We used the release of bacteria from the light organs to estimate bacterial rates of growth in the light organs. For one monocentrid fish (4 specimens of Monocentris japonicus collected at Jogashima, Japan in 1980) and for two anomalopid fishes (2 specimens each of Photoblepharon palpebratus collected at Sebu, Phillipines in 1981 and Grand Comore Island in 1975 and Kryptophanaron alfredi collected at Parguera, Puerto Rico in 1982) we measured rates of release of bacteria into the surrounding seawater and the bacterial population sizes in the light organs; from this information we calculated doubling times of bacteria in the light organs. In addition, we determined the luminescence of bacteria after their release into the seawater. For M. japonicus, two specimens released 1.1 to 6×106 and 2×107 bacteria h-1, respectively; the light organs contained about 1.5×108 bacteria. For P. palpebratus, one specimen released 2.2×108 bacteria h-1; a second specimen had light organs containing 5.2×109 bacteria. For K. alfredi, one specimen released 7×107 bacteria h-1 and had light organs containing 5.6×108 bacteria; a second specimen released 3.6×107 bacteria h-1 and had light organs containing 7.3×108 bacteria. Bacterial doubling times in the light organs of these three fishes were variable and ranged from 7.5 to 135 h in M. japonicus and 8 to 23 h in the anomalopids. Bacteria released from M. japonicus into the seawater remained viable, but bacteria from all of the fishes soon ceased to emit light.

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