Oceanic dispersal in a sedentary reef shark (Triaenodon obesus): genetic evidence for extensive connectivity without a pelagic larval stage

2011 ◽  
Vol 39 (6) ◽  
pp. 1144-1156 ◽  
Author(s):  
Nicholas M. Whitney ◽  
William D. Robbins ◽  
Jennifer K. Schultz ◽  
Brian W. Bowen ◽  
Kim N. Holland
Keyword(s):  
Larval Stage ◽  
Genetic Evidence ◽  
Reef Shark ◽  
Triaenodon Obesus ◽  
Pelagic Larval Stage

scholarly journals The breeding and development of the ascidian Pelonaia corrugata Forbes and Goodsir

1954 ◽  
Vol 33 (3) ◽  
pp. 681-687 ◽  
Author(s):  
R. H. Millar
Keyword(s):  
Larval Stage ◽  
The Other ◽  
Early Cleavage ◽  
Pelagic Larval Stage

SummaryPelonaia corrugata in the Firth of Clyde breeds for only 2–4 weeks in January or February. The species is oviparous. Early cleavage is similar to that of other ascidians, but after gastrulation the embryo passes through a two-hemisphere stage. One of these hemispheres is endodermal. From the other hemisphere, which slowly envelops the endoderm, two ampullae grow and fix the embryo to the substratum. The young ascidian develops directly from this attached embryo, and the development is therefore anural. Elimination of the pelagic larval stage is regarded as an adaptation to the sand-dwelling habit of the adult, as it prevents dispersal to unsuitable habitats.

Parthenogenesis in a whitetip reef shark Triaenodon obesus involves a reduction in ploidy

2014 ◽  
Vol 85 (2) ◽  
pp. 502-508 ◽  
Author(s):  
D. S. Portnoy ◽  
C. M. Hollenbeck ◽  
J. S. Johnston ◽  
H. M. Casman ◽  
J. R. Gold
Keyword(s):  
Reef Shark ◽  
Triaenodon Obesus

scholarly journals Notes on two rare species of brachyuran crabs (families Matutidae and Parthenopidae) from Indonesian waters with new distribution records

2021 ◽  
Author(s):  
Nisfa Hanim ◽  
Ali Suman ◽  
Duranta Diandria Kembaren ◽  
Dyah Perwitasari ◽  
Yusli Wardiatno ◽  
...  
Keyword(s):  
Larval Stage ◽  
Rare Species ◽  
New Record ◽  
Marine Fisheries ◽  
Sea Current ◽  
Arafura Sea ◽  
Brachyuran Crabs ◽  
Malacca Strait ◽  
New Distribution ◽  
Pelagic Larval Stage

This research aimed to report two species of Brachyuran crabs that were found rarely from Indonesian waters. The latest report was more than one hundred years ago, and the study from Indonesia before was not so clear, both information about specimens and location details. We conducted our study in Southern Aru Island and Malacca Strait using trawl during the cruise research which was held by the Research Institute for Marine Fisheries, Ministry of Marine Affairs and Fisheries. Our findings were Izanami reticulata, New Record (family Matutidae) from Southern Aru Island, and Cryptopodia fornicata (family Parthenopidae) from Malacca Strait. The two locations are located close to the location where the species was found in previous studies, namely the Arafura Sea which is adjacent to the Aru Islands, and the Malacca Strait which is adjacent to Borneo. We suspect that the presence of these two species in western and eastern Indonesia was due to their distribution during the pelagic larval stage through the sea current. This article also provided the specific habitat for both species which has not been stated. In addition, this article will contribute to strengthening Indonesia as a mega biodiversity country with initiate compiling the database of Brachyura in Indonesian waters.

Occurrence of the whitetip reef shark Triaenodon obesus at the Kermadec Islands, Southwest Pacific Ocean

2017 ◽  
Vol 44 (4) ◽  
pp. 354-360 ◽  
Author(s):  
C. A. J. Duffy ◽  
N. D. Forrester ◽  
T. K. Gibson ◽  
S. Hathaway
Keyword(s):  
Pacific Ocean ◽  
Reef Shark ◽  
Southwest Pacific ◽  
Triaenodon Obesus

scholarly journals Relationship between the biomass of reef shark and fish in South Morotai Waters, North Maluku, Indonesia

2020 ◽  
Vol 21 (12) ◽  
Author(s):  
JIBRIEL FIRMAN SOFYAN ◽  
AMBARIYANTO AMBARIYANTO ◽  
KEN SUWARTIMAH ◽  
Abdul Hamid A. Toha
Keyword(s):  
Regression Analysis ◽  
Positive Relationship ◽  
Biomass Estimation ◽  
Functional Composition ◽  
Visual Census ◽  
Underwater Visual Census ◽  
Reef Shark ◽  
Triaenodon Obesus ◽  
Reef Sharks ◽  
Carcharhinus Melanopterus

Abstract. Sofyan JF, Ambariyanto A, Suwartimah K, Toha AHA. 2020. Relationship between the biomass of reef shark and fish in South Morotai Waters, North Maluku, Indonesia. Biodiversitas 21: 5605-5613. This study aims to determine the biomass of reef shark and fish in South Morotai Waters in North Maluku, Indonesia. The Audible Stationary Count and Underwater Visual Census method were used to collect the data of reef sharks and fish. Seven and one site locations of coral reef and shark ecosystems were surveyed and, the data were analyzed using regression analysis to obtain a correlation between the variables. The three reef sharks found were Carcharhinus melanopterus, Triaenodon obesus, and Carcharhinus amblyrhynchos. Biomass estimation of reef sharks and fish ranged from 0.59 to 19.97 kg/ha and 30.95 kg/ha to 49.92 kg/ha, consisting of 8 families. In the area of aggregations, both species were found in 7 sites, and the population of reef shark amounted to 86.96 kg/ha and fish was around 55.705 kg/ha, consisting of 9 families. There was a positive relationship between the biomass of reef shark and fish in South Morotai waters, and the index of determination was 0.8043, showing that the biomass of reef shark was influenced by that of fish. These results indicated the importance of biomass in determining the functional composition and diversity of reef shark and fish.

scholarly journals Reproductive Output and Duration of the Pelagic Larval Stage Determine Seascape-Wide Connectivity of Marine Populations

2012 ◽  
Vol 52 (4) ◽  
pp. 525-537 ◽  
Author(s):  
Eric A. Treml ◽  
Jason J. Roberts ◽  
Yi Chao ◽  
Patrick N. Halpin ◽  
Hugh P. Possingham ◽  
...  
Keyword(s):  
Larval Stage ◽  
Reproductive Output ◽  
Pelagic Larval Stage

Group courtship, mating behaviour and siphon sac function in the whitetip reef shark, Triaenodon obesus

2004 ◽  
Vol 68 (6) ◽  
pp. 1435-1442 ◽  
Author(s):  
Nicholas M. Whitney ◽  
Harold L. Pratt ◽  
Jeffrey C. Carrier
Keyword(s):  
Mating Behaviour ◽  
Reef Shark ◽  
Triaenodon Obesus

scholarly journals The Later Larval Life of Arenicola Marina L

1949 ◽  
Vol 28 (3) ◽  
pp. 635-639 ◽  
Author(s):  
G. E. Newell
Keyword(s):  
Life History ◽  
Larval Stage ◽  
Larval Life ◽  
Arenicola Marina ◽  
Pelagic Larval Stage ◽  
New Habitats

Larvae with three and four chaetigerous segments and also an early post-larval stage of Arenicola marina are described with figures. These are all bottomdwelling stages enclosed in mucous tubes and were collected from the pebble and Fucus zone at Whitstable.The rinding of these larvae furnishes additional evidence for the view that, except when migrating in the water to new habitats, the lugworm possesses no pelagic larval stage in its life history.

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