89
The Anguilliform Eels
90
ȱ ȱ ȱ ¢ȱ ȱ ȱ ȱ ȱ ȱ ȱ ¡ȱ
ȱȱ¢ȱȱȱ¡ȱȱŗşŖŝȱȱŗşŗŖȱǻȱ ǭȱǰȱŗşşşǼǯȱ
ȱȱȱȱȱŗşşŖǰȱȱ ȱȱȱȱȱȱ
ȱ ȱ ȱ ęȱ ȱ ȱ ȱ ȱ ǻǰȱ ŗşşŞǰȱ ŘŖŗŖDzȱ
ȱ ǭȱ ǰȱ ŗşşşDzȱ ãǰȱ ŘŖŖŖDzȱ ãȱ ǭȱ ǰȱ ŘŖŖŘDzȱ ȱ ǭȱ ¢ǰȱ ŘŖŖřǼǯȱ ȱ ȱ ȱ ȱ ȱ ȱ
ȱ¢ȱȱ ȱȱȱ ȱȱȱ
ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ¡ȱ
ȱǻǯ ǯȱȱǭȱǯǯȱǰȱǯȱǯǼǯȱȱ¡ǰȱȱ
¢ȱ ȱAnguilla huangiȱ ǻA. luzonensisǼȱ ȱ ȱ ȱ
ȱȱȱ ȱȱ ȱA. celebesensisȱȱȱȱ
ȱȱȱǻǰȱȱǭȱ£ǰȱŘŖŖşǼǯȱ
ȱȱȱȱȱȱȱȱȱȱȱȱȱȱ
ȱ ȱȱȱǰȱȱȱȱȱ ǯȱ
MATERIALS AND METHODS
ȱȱȱȱȱ¢ȱȱȱȱȱȱ
ȱȱǰȱȱȱǻȱŗǼȱȱȱ¢ȱȱȱ
ȱ ȱgarabȱ ǻȱ ȱ Ǽǰȱ ǰȱ ęȬȱ ȱ ȱ
Figure 1. Map showing the Bago River in Negros Occidental.
ANGUILLIFORM EELS IN BAGO RIVER
91
ǯȱȱȱȱ¢ȱȱȱęȱȱ
ȱęȱȱȱȱȱ ȱȱȱȱȱ
¢ǯ
ȱ ȱ ¢ȱ ę¡ȱ ȱ ŗŖƖȱ ȱ ȱ ȱ ȱ ŝŖƖȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱȱ ȱ ȱ ǯǯȱ £ȱ ȱ ȱ ȱ ¢ȱ ȱ ȱ ¢ǰȱ
ȱ¢ǯȱ
ȱ ǰȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ
ȱȱ ȱȱȱȱȱȱȱȱ¢ȱ
ȱȱȱȱȱȱǻǼȱȱ ȱ¡ȱ
¢ȱȱȱȱȱřŖȱȱŘŖŖşȱ ȱȱǯȱȱ
ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱȱȱȱȱȱǯ
ȱ ęǰȱ ȱ ȱ ȱ ȱ ȱ ǰȱ
ȱȱȱȱȱȱǻǯ ǯȱȱȱȱȱȱǰȱ
ȱ ȱ ȱ ȱ ȱ ȱ ¢ǰȱ ȱ
ȱȱǰȱǯǯȱȱȱȱ¢ȱȱǰȱ Ǽǯȱȱȱ ȱȱȱȱȱȱȱ
ǯȱ ěȱ ǯȱ ȱ ȱ ȱ ęȱ ȱ ȱ ȱ ¢ȱ
ȱȱǰȱ ȱȱȱ£ȱȱ ȱDZȱȱ
ȱȱǻŗşşşǼȱȱȱǻŘŖŗŖǼȱȱDzȱãǰȱ
ȱ ǭȱ ȱ ǻŗşşşǼȱ ȱ ǰȱ ȱ ȱ ǻŗşşşǼȱ ȱ
ȱȱǯ
RESULTS AND DISCUSSION List of species
ȱȱȱȱȱȱȱŘŗȱȱȱȱ
ȱȱȱȱȱȱȱ ȱȱȱȱȱ ȱǯȱ¢ȱȱ ȱ ȱȱȱ
ȱȱȱȱȱǻŗŖȱǼȱȱȱǻȱ
Ǽȱ ǯȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ¡ȱ
ĴDzȱȱȱȱȱȱĚ¢ȱǯ
ORDER ANGUILLIFORMES
FAMILY ANGUILLIDAE (Freshwater Eels)
Anguilla marmorataȱ¢ȱȱ ȱŗŞŘŚȱǻȱŘǼ A. BUCOL, C. MENES, J. LINAUGO, & J.O. PACALIOGA
92
Specimens:ȱ ȱŗŖŖśŗȬŗŖŖśŘ
Remarks:ȱȱ¢ȱȱȱAnguillaȱ¢ȱȱĴȱȱ
ȱȱȱęȱ ȱȱȱȱȱȱȱȱȱ
ȱǻȱŗşşşǼǯȱȱȱȱȱ ȱȱǻȱŗȱȱ
ȱȱǼȱȱȱŘȱȱ ȱŗŚȱǯȱ
Figure 2. Giant Mottled Eel Anguilla marmorata from Bago River (weight = 14 Kg).
Figure 3. The worm eel Moringua raitaborua from Bago River estuary.
ANGUILLIFORM EELS IN BAGO RIVER
93 ȱ ȱǻĴȱǼ
Moringua raitaboruaȱȱŗŞŘŘȱǻȱřǼ
Specimens:ȱ ȱŗŖŖřŖȬśŖDzȱȱȱ¢DzȱDZȱǯȱǰȱǯȱ
ǰȱǯȱǰȱȱǯȱDzȱǯȱŗśǰȱŘŖŖşǯ
Remarks:ȱȱȱ¡ȱȱǻȱǭȱǰȱŗşŝŘDzȱ
ǰȱ ŗşşşǼȱ ȱ ȱ ¡ȱ ȱ ȱ ȱ ȱ Moringuaǯȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ¢ȱ ȱ
ěȱȱȱǯȱȱȱȱȱMoringua were
ȱ¢ȱ ȱȱ ȱ ȱ ȱApthalmichthys, Stilbiscus,
ȱAnguillichthysȱǻ ȱǭȱǰȱŗşśŜDzȱ ǰȱŗşśŚDzȱǰȱ ŗşŜŞDzȱȱǭȱǰȱŗşŝŘǼǯȱ
ȱ ȱ ȱ ȱ ȱ ȱMoringuaȱ ȱ ȱ ¢ȱ ȱ
ǯȱ ȱ ȱ ǻȱ řŞǼȱ ȱ ȱ ȱ ȱ
ȱȱǻȱǰȱŗşŜŞǼǰȱȱȱȱȱȱȱȱ
¢ȱȱǻǰȱŗşşşǰȱŘŖŗŖȱǯȱǼǯȱȱǻŗşŘŚǼȱȱ
ȱȱȱȱMoringua cagayanaȱȱM. robustaǯȱȱȱ that M. robustaȱȱȱȱȱȱȱM. raitaboruaǯȱ ǰȱ
ȱȱȱȱȱȱȱ ȱȱȱ ȱ
ȱ ȱ ǯȱ ȱ ¡ȱ ȱ ȱ ¢ȱ ǰȱ
ȱ ǰȱ ȱ ȱ ȱ ¡ȱ ȱ
ȱȱȱ ȱȱȱMoringua raitaborua.
ȱ ȱ ȱMoringuaȱ ȱ ¢ȱ ȱ ȱ ȱ ǰȱ ȱ ȱ ȱ ȱ ȱ ȱ ¡ȱ ǯȱȱ
ȱȱȱȱ¢ȱǯȱȱȱǯȱȱŗşşśȱȱ ȱ ǻȱ řŚřşŞŞǼȱ ȱ ȱ ǰȱ ȱ ȱ ǻȱ řŚřşŞŝǼǰȱ
¢ȱ ǯȱ ȱ ȱ ŗşŘşȱ ȱ ȱ ǯǯȱ ¢ȱ ȱ ¡ȱ ȱ
ǰȱ ȱ ȱ ǻȱ ŗŗŘŝŝřǼǰȱ ¢ȱ ȱ ȱ
ȱ¡ȱǻŗşŖŝȬŗşŗŖǼȱȱŗşŖŞȱȱȱǯǰȱ¢ȱǻȱ ŗřśŗŖŚǼȱȱȱȱȱȱŗşŖşȱǻȱŗřśŗŖŞǼǯȱȱȱ Moringuaȱ ȱ ȱ ȱ ȱ ŗŝŖȱ ȱ ǻǼȱ ȱ ¢ȱ
ȱȱǯȱȱ¢ȱŗşŝśȱȱȱǰȱȬ¢ǰȱǰȱ ȱȱȱGymnothoraxȱȱǻȱŗŖŝśŖǼǯ
ȱ ǻŗşŘřǼȱ ȱ Apthalmichthys macrocephalusȱ ǰȱ
¢ȱȱȱȱȱMoringua raitaboruaǰȱȱȱ
ǰȱǯȱȱȱȱ
FAMILY CONGRIDAE (Conger Eels) Bathymyrus ǯ
Specimen:ȱ ȱŗŖŖŜśDzȱȱȱDzȱǯȱ
A. BUCOL, C. MENES, J. LINAUGO, & J.O. PACALIOGA
94
Uroconger lepturusȱǻǰȱŗŞŚśǼ
Specimens:ȱ ȱ ŗŖŖśřDzȱ ȱ ȱ ǰȱ ȱ
DzȱDZȱǯȱǯȱ
Remarks:ȱǯȱȱȱȱȱȱȱȱȱȱ
ȱ ǯȱ ŘŖŖşǯȱ ȱ ǻŗşŘřǼȱ ȱ ȱ ȱ ȱ ȱ
ǰȱǯȱ
ȱȱûǰȱŗŞŘŞ
Specimens:ȱȱȱȱȱȱǻŗŖŜŜŜǼȱȱȱ
ȱǰȱȬ¢ǰȱǰȱ¢ȱȱ¢ȱŗşŝśǯȱ Remarks:ȱ¢ȱȱȱ ȱǯ
FAMILY MURAENESOCIDAE (Pike Congers) Muraenesox cinereusȱǻªǰȱŗŝŝśǼȱǻȱŚǼ
Specimens:ȱ¢ȱȱȱ¢Ȭȱȱęȱǯ
Remarks:ȱȱȱ¢ȱęȱȱȱȱȱȱȱ
ȱǯ
Muraenesox bagioȱǻǰȱŗŞŘŘǼȱǻȱśǼ
Specimens:ȱ ȱŗŖŖśŚȱǻ ȱǼDzȱȱȱ¢
Figure 4. Head region of the Pike-conger eel Muraenesox cinereus.
ANGUILLIFORM EELS IN BAGO RIVER
95
FAMILY OPHICHTHIDAE (Snake or Worm Eels) Subfamily Myrophinae
Neenchelys ǯȱ
Specimens:ȱ ȱŗŖŖśś
Remarks:ȱȱ ȱȱȱȱȱȱȱȱǯȱ
ȱȱȱȱ¡¢ȱǰȱęȱȱȱ
ȱȱȱǯȱȱ
Muraenichthys thompsoniȱȱȱǰȱŗşŖŞȱǻȱŜǼ
Figure 5. Muraenesox bagio (dorso-lateral view).
Figure 6. Muraenichthys cf thompsoni.
A. BUCOL, C. MENES, J. LINAUGO, & J.O. PACALIOGA
96
Specimens:ȱ ȱŗŖŖśŜ
Remarks:ȱȱ ȱȱ ȱȱȱȱȱȱ ȱ
ȱȱȱȱȱȱȱgarabǯȱȱǻŗşŝŖǼȱȱM.
malabonensisȱȱȱ¢¢ȱȱM. thompsoni.
Benthenchelys cartieriȱ ǰȱŗşřŚ
Remarks:ȱȱ ȱȱ ȱȱȱȱǻŗşşŚǼǯȱ¢DZȱ ȱ şŘřśŜȱ ǻŗŗśȱ ǰȱ ȱ ŚŜȦśŖȦŗŜŝǼǯȱ ęǰȱ ȱ ǯDzȱ
ȱ¢ȱȱǰȱȱǰȱȱŘřǚȱǰȱŘśǯśŖȱȱǻŚŗȱǼDzȱ ŗŖǚŖśȇŚśȈǰȱŗŘŘǚŗŞȇřŖȈDzȱŜřŞȱȱǻŗŗŜŞȱǼDzȱřŖȱȱŗşŖŞDzȱAlbatrossȱśŗŞśDzȱ ŗŝŘŜȱǯȱ¢DZȱȱşřřŚşȱǻŚǰȱşŝȬŗŖśȱǼǯȱ
Scolecenchelysȱ¢ǰȱŗŞŜŝȱǻȱŝǼ Specimen:ȱŗȱȱȱȱȱȱ
Remarks:ȱȱȱȱȱMuraenichthysȱ¢ȱȱȱ
ȱȱȱǰȱ¡ȱȱ¢ȱǻǰȱŗşŝŖǼǯȱȱ
¢ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ
ȱȱȱȱȱǰȱ ȱȱȱęȱȱȱ
ȱȱǯȱ
Figure 7. The worm eel Scolecenchelys from Bago River.
¢¢ȱ£ȱȱȱǰȱŗşşş
Specimens:ȱȱŗŚŞśŝŚDzȱǯǯȱǰȱŘŖȱȱŗşŘşȱ
Remarks:ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ¢ȱ ȱ ȱ
ȱ ǻŗşşşǼǰȱ ȱ ȱ ȱ ȱ ǻȱ ŗŚŞśŝŚǼȱ
ȱěȱǰȱ¢
ANGUILLIFORM EELS IN BAGO RIVER
97
ȱȱǰȱŗŞśŜȱǻȱŞǼ Specimens:ȱ ȱŗŖŖśŝ
Remarks:ȱ ęȱ ¢ȱ ȱ ȱ ȱ ȱ ȱ
ȱǻǰȱǯȱǯȱǯǼǯȱ Bascanichthys sp.ȱǻȱşǼ
Specimens:ȱ ȱŗŖŖśŞDzȱȱȱȱȱȱȱ¢ȱ
¢ȱȱȱȱ¢ȱȱȱDzȱDZȱǯȱȱȱ
¢ǯȱȱ
Figure 8. Cirrhimuraena cf chinensis.
Figure 9. Bascanicthys sp., an uncommon estuarine eel in Negros Occidental.
A. BUCOL, C. MENES, J. LINAUGO, & J.O. PACALIOGA
98
ȱȱ ǰȱŗŞŝŘȱǻȱŗŖǼ Specimens:ȱ ȱŗŖŖśş
Remarks:ȱ ȱ ȱ ȱLamnostomaȱ ǻȱ ǭȱ ǰȱ ŗşşŞDzȱ ȱ ǭȱ ǰȱ ŗşşşDzȱ ȱ ǭȱ ǰȱ ŘŖŖřǼȱ ȱ ȱ
¡ȱȱȱȱȱȱ¢ȱȱȱȱȱ
ȱȱȱȱŗŜŖȬŗŜŘǯȱĴȱȱ ȱȱȱ¢ȱ
ȱȱŗŘȱȱȱȱǯȱȱȱȱȱȱȱ
ȱ ȱ ǻęȱ ¢ȱ ǯǯȱ £Ǽȱ ȱ ¢ȱ ȃǯǯȱ Ȅȱȱȱȱȱȱȱǰȱȱǰȱ¢ȱ
ȱŗŖȱȱȱȱřǰȱŗşŚŞǯȱȱ Ophichthus grandoculisȱǻǼ
Specimens:ȱ ȱŗŖŖŜŖDzȱȱȱ¢Dzȱǯȱȱȱ¢ǯ
Figure 10. The worm eel (Yirrkala misolensis) from Bago River.
ANGUILLIFORM EELS IN BAGO RIVER
99
DZȱȱ¢ȱ ȱȱȱȱęȱȱȱǯ Pisodonophis boroȱǻǰȱŗŞŘŘǼ
Specimens:ȱȱȱȱȱȱȱȱȱŘŖŖşǯȱ
FAMILY MURAENIDAE (Morays)
Strophidon satheteȱǰȱŗŞŘŘȱǻȱŗŗǼ Specimens:ȱ ȱŗŖŖŜŗ
Remarks:ȱȱȱ ȱȱȱȱ¢ȱ¢ȱ ȱ
ȱȱȱȱ ȱȱȱȱȱȱȱȱ
ǯȱ ȱ ǻŗşŘřǼȱ ȱ ȱ ȱ ȱ Evenchelys macrurus ǻǼȱȱǯȱ
ȱȱȱȱȱȱȱȱȱȱ
ȱǻŗşşśǼǰȱȱǻŗŞŜřǼȱ¢ȱȱȱsatheteȱ ȱ
ȱ ȱbrummeriǰȱ ȱ ȱ ȱ ȱ ȱ ȱ
ȱȱǻȱȱȱȱǰȱȱȱȱȬȱ
ȱȬęȱ¢Ǽǯ
Figure 11. The moray eel Strophidon sathete from Bago River estuary.
A. BUCOL, C. MENES, J. LINAUGO, & J.O. PACALIOGA
100
Gymnothorax polyuranodonȱǻǰȱŗŞśřǼȱǻȱŗŘǼ
Specimen:ȱŗȱȱǻ¢ȱȱȱȱȱȬ
ǼDzȱDZȱǯȱȱȱ¢ǯȱ
Remarks:ȱȱǻŗşŘřǼȱȱȱȱȱȱȱȱȱȱȱ
ȱǰȱ ȱ ȱǯ Gymnothorax tileȱǻǰȱŗŞŘŘǼ
Specimens:ȱȱȱ¢ȱęȱȱȱǯȱȱȱ
ȱ¢ȱȱȱȱȱǯȱ Gymnothorax pictusȱǻǰȱŗŝŞşǼ
Specimens:ȱŗŘȱȱȱȱȱ¢ȱȱȱǯȱȱ¢ȱ ŗşŝśȱȱȱǰȱȬ¢ǰȱǯȱ
Remarks:ȱȱȱȱȱǯȱ
Figure 12. The moray eel Gymnothorax polyuranodon.
ANGUILLIFORM EELS IN BAGO RIVER
101 ACKNOWLEDGMENTS
ȱ ȱȱ ȱȱȱȱȱȱǻǼȱȱȱ
ȱȱȱȃ¢¢ȱȱ¢ȱȱȱȱǯȄȱǯȱȱǯȱȱ ǻȱȱȬȱȱȱǼȱȱȱǯȱȱȱȱ
ȱȱȱȱȱȱȱȱȱȱ¢ǯȱȱȱ
ȱȱ¡ȱęȱȱ¢ȱǯȱȱ ǯȱȱǻǼȱȱǯȱǯȱ ǯȱȱǻȱ¢ȱȱǼȱȱȱǯȱǯ ǯȱȱȱ
ȱȱȱȱȱȱȱȱ¢ǯȱǯȱǯȱȱȱ
ȱȱȱȱȱȱȱȱ ȱȱȱȱȱ
¡ȱȱǯ
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