(DRAFT) - Taxonomy
                                 Species drum, black
                                 Species Id M010025
                                   Date 27 AUG 96



TAXONOMY

NAME - drum, black OTHER COMMON NAMES - sea drum, gray drum, oyster cracker, drum fish, banded drum, striped drum, puppy drum and butterfly drum ELEMENT CODE - CATEGORY - Fish PHYLUM AND SUBPHYLUM - Vertebrata, CLASS AND SUBCLASS - Osteichthyes, ORDER AND SUBORDER - Perciformes, FAMILY AND SUBFAMILY - Sciaenidae, GENUS AND SUBGENUS - Pogonias, SPECIES AND SSP - cromis, SCIENTIFIC NAME - Pogonias cromis AUTHORITY - Linnaeus TAXONOMY REFERENCES - 21 COMMENTS ON TAXONOMY - Other common names include sea drum, gray drum, oyster cracker, drum fish, banded drum, striped drum, puppy drum, and butterfly drum *21*. Taxonomy - 1
                                  (DRAFT) - Status
                                 Species drum, black
                                 Species Id M010025
                                   Date 27 AUG 96



STATUS

Coded Status Sport Fish Commercial Commercial/consumption REFERENCES FOR STATUS - 21 COMMENTS ON STATUS - The black drum is a valuable recreational and commercial species along the gulf of Mexico. Commercial landing of black drum in Texas from 1977 to 1982 averaged 593,200 kg annually, with a mean value of $550,900 per year. Black drum have been identified as the most important fish in the winter sport fishery in Biloxi Bay, Mississippi *21*. Status - 1
                               (DRAFT) - Distribution
                                 Species drum, black
                                 Species Id M010025
                                   Date 27 AUG 96



DISTRIBUTION

Distribution - 1
     

HABITAT ASSOCIATIONS

NATIONAL WETLAND INVENTORY CODES NWI NWICLS NWIMOD NWISPEC Estuarine FL2 V 4 Estuarine FL3 V 4 Estuarine RF2 V 4 Estuarine FL3 V 4 Estuarine FL3 V 5 Estuarine FL2 V 4 REFERENCES FOR NWI - 21 COMMENTS ON HABITAT ASSOCIATIONS - Black drum inhabit nearshore waters and estuaries. Adults are most common over sand or soft bottoms and over oyster reefs and clam shell deposits. Adults have been taken in gulf waters off Texas at depths of 5-27 m from December to June. Adults have also been caught in the deeper gulf waters off Texas at depths of up to 37 m, but the majority of fish were caught in the 20-27 m zone. Spawning occurs in or near passes into the Gulf of Mexico and in open bays and estuaries. Juvenile black drum prefer shallow, nutrient rich and relatively muddy waters (e.g., tidal creeks and channels) along the Gulf of Mexico. While juveniles utilize the estuary environment, they can tolerate a wide range of salinities and water temperatures. Young black drum have even been taken in freshwater. Most black drum stay in the shallow bay areas until they reach sexual maturity *21*. Habitat Associations - 1
                                (DRAFT) - Food Habits
                                 Species drum, black
                                 Species Id M010025
                                   Date 27 AUG 96



FOOD HABITS

TROPHIC LEVEL - CARNIVORE REFERENCES FOR TROPHIC LEVEL - 21 LIFESTAGE FOOD FOOD PART Larva Zooplankton Not Applicable Juvenile Annelids Not Specified Juvenile Crustaceans Not Specified Juvenile Polychaetes Not Specified Juvenile Copepods Not Specified Juvenile Osteichthyes Not Specified Adult Molluscs Not Specified Adult Crustaceans Not Specified Adult Other Plant Species Not Specified General Osteichthyes Not Specified General Clupeiformes Not Specified General Molluscs Not Specified Important Molluscs Not Specified REFERENCES FOR GENERAL FOOD - 21 REFERENCES FOR IMPORTANT FOOD - 21 REFERENCES FOR ADULT FOOD - 21 REFERENCES FOR JUVENILE FOOD - 21 REFERENCES FOR LARVAE FOOD - 21 COMMENTS ON FOOD - Black drum larvae feed largely on zooplankton. Food of the young consists chiefly of marine annelids, soft crustaceans, and small fishes. Young black drum were found to eat small fish (36%) and polychaetes (32%). It was also reported that young fed mainly on small invertebrates such as copepods, anneilds (including polychaetes), and amphipods. In Texas estuaries, the dominent food of black drum longer than 20 cm was the mollusk Mulinia transversa corbuloides, an inhabitant of muddy waters. This mollusk made up about 33% of the diet of black drum 21-50 cm long; larger drum ate mostly mollusks (74%) and crabs (16%). It was reported that larger fish fed on mollusks and shrimp, while another study reported that black drum in Aransas Bay, Texas, fed heavily on shrimp, mollusks, and aquatic vegetation. Moderate to large captive drum reportedly were capable of consuming more than two oysters of commercial size per kilogram of body weight each day. Black drum are known to destroy large numbers of oysters on seed reefs and oyster lease areas in Louisiana and Mississippi *21*. COMMENTS ON ADULT FOOD - In Texas estuaries, the dominant food of black drum longer than 20 cm was Food Habits - 1 (DRAFT) - Food Habits Species drum, black Species Id M010025 Date 27 AUG 96 the mollusk Mulinia transversa corbuloides, an inhabitant of muddy waters. This mollusk made up about 33% of the diet of black drum 21-50 cm long; larger drum ate mostly mollusks (74%) and crabs (16%). It was reported that larger fish fed on mollusks and shrimp, while another study reported that black drum in Aransas Bay, Texas, fed heavily on shrimp, mollusks, and aquatic vegetation. Moderate to large captive drum reportedly were capable of consuming more than two oysters of commercial size per kilogram of body weight each day. Black drum are known to destroy large numbers of oysters on seed reefs and oyster lease areas in Louisiana and Mississippi *21*. COMMENTS ON JUVENILE FOOD - Food of the young consists chiefly of marine annelids, soft crustaceans, and small fishes. Young black drum were found to eat small fish (36%) and polychaetes (32%). It was also reported that young fed mainly on small invertebrates such as copepods, anneilds (including polychaetes), and amphipods *21*. COMMENTS ON LARVAE FOOD - Black drum larvae feed largely on zooplankton *21*. Food Habits - 2
                         (DRAFT) - Environment Associations
                                 Species drum, black
                                 Species Id M010025
                                   Date 27 AUG 96



ENVIRONMENTAL ASSOCIATIONS

G = General A = Adult LIM = Limiting RA = Resting Adult J = Juvenile FA = Feeding Adult RJ = Resting Juvenile BA = Breeding Adult FJ = Feeding Juvenile P = Pupae L = Larvae E = Egg RL = Resting Larvae FL = Feeding Larvae
LIFESTAGE ENVIRONMENTAL ASSOCIATIONS G Water Temperature: Specified in Comments G Relation to Substrate: Unattached - normally free living G Bottom Type [Aquatic]: Mud or silt G G Water Depth Preference: Specified in Comments G Aquatic Features: Silt bottom streams G Coastal Wetlands: Regularly flooded salt marshes G Coastal Wetlands: Sounds and bays G Estuarine habitat zone: bay G Estuarine habitat zone: sound A Water Depth Preference: Specified in Comments A Bottom Type [Aquatic]: Sand J Water Depth Preference: Specified in Comments J J Bottom Type [Aquatic]: Mud or silt REFERENCES FOR ENVIRONMENTAL ASSOC_ - 21 REFERENCES FOR RESTING ADULT ENVIRONMENTAL ASSOC_ - 21 REFERENCES FOR BREEDING ADULT ENVIRONMENTAL ASSOC_ - 21 REFERENCES FOR RESTING JUVENILE ENVIRONMENTAL ASSOC_ - 21 COMMENTS ON ENVIRONMENTAL ASSOCIATIONS - WATER TEMPERATURE: Sudden drops in temperature have caused black drum to move from the shallow waters of the upper Laguna Madre, Texas, to the deeper waters of nearby Baffin Bay and Corpus Christi Bay. Mass mortality is relatively common when water temperatures drop sharply and are sustained for extended periods. In coastal waters and estuaries of the Gulf of Mexico, black drum are common in water temperatures of 12 to 33 deg C. SALINITY: In coastal waters and estuaries of the Gulf of Mexico, black drum are common in salinities ranging from 9 to 26 ppt. They can tolerate salinity extremes of 0 ppt and rarely 80 ppt. DEPTH: Black drum have been taken in gulf waters off Texas at depths of 5-27 m from December to June. Adults have also been caught in the deeper gulfs waters off Texas at depths of up to 37 m, but the majority of fish were caught in the 20-27 m zone *21*. Environment Associations - 1 (DRAFT) - Environment Associations Species drum, black Species Id M010025 Date 27 AUG 96 COMMENTS ON RESTING ADULT ENVIRONMENTAL ASSOC_ - SUBSTRATE: Adult black drum are most common over sand or soft bottoms or over oyster reefs and clam shell deposits. DEPTH: Adult black drum have been taken in the deeper gulf waters off Texas at depths of up to 37 m, but the majority of fish were caught in the 20-27 m zone *21*. COMMENTS ON BREEDING ADULT ENVIRONMENTAL ASSOC_ - DEPTH: In Texas, ripe black drum were observed in water as deep as 27 m *21*. COMMENTS ON RESTING JUVENILE ENVIRONMENTAL ASSOC_ - SUBSTRATE: Juvenile black drum are most common over muddy bottoms in estuary systems. SALINITY: Juvenile black drum can tolerate a wide range of salinities and have even been taken in freshwater. TEMPERATURE: Juveniles can tolerate a wide range of temperatures *21*. Environment Associations - 2
                               (DRAFT) - Life History
                                 Species drum, black
                                 Species Id M010025
                                   Date 27 AUG 96



LIFE HISTORY

MORPHOLOGY/IDENTIFICATION AIDS: Dorsal fin X-I, 19-23; anal fin II, 5-7; caudal fin, 9+8, procurrent rays 8-9+8; pelvic fin I, 5; scales 41-45 in a lateral series; vertebrae 10+14; gill rakers 4-6+12-16; branchiostegals 7; teeth in jaws small, set in broad bands, not especially enlarged; no teeth in vomer, palatines, or tongue; lower pharyngeals large, completely united with many blunt molars at the middle and surrounded with strong conical teeth. Head 2.9-3.4, body depth 2.3-2.8, pectoral fin 3.3-3.6 in standard length (SL); snout 2.8-3.7, eye 2.8-3.9, interorbital 3.0-4.0, maxillary 2.5-3.3 in head length. Body oblong, moderately compressed, back much elevated; ventral outline nearly straight; head moderately short, snout blunt; mouth horizontal, inferior, lower jaw included; maxillary scarcely reaching below middle of eye; chin with 5 pores and 12 to 13 pairs of barbels along inner edges of lower jaw (LNC), the series usually extending back to below middle of eye. Scales firm, ctenoid. Dorsal fin continuous, with a deep notch between the spinous and soft portions (LNC); dorsal spines stiff and slender, the third longest; anal fin short, the second spine much enlarged; caudal fin subtruncate; pectoral fins about as long as head. Live adults are silvery or blackish with a brassy luster, and the fins have a black or dusky color. Coloration may change with habitat or age. Young black drum usually have 4 to 6 vertical black bars on their sides. In the Gulf of Mexico, black drum are almost uniformly silvery, losing vertical crossbars early in life. Fish occupying bays and lagoons are darker in color, often bronze along the back and dirty white on the side and belly. SPAWNING: Black drum mature at the end of their second year of life at standard lengths (SL) of 285-330 mm. They spawn in or near passes into the Gulf of Mexico and in open bays and estuaries. In Texas, ripe black drum were observed in water as deep as 27 m. Gravid and spent fish were collected most frequently in water 20-27 m deep. Actual spawning in the Gulf has not been directly observed; however, ripe and spent fish have been taken in the same location and during the same period as black drum larvae. Spawning time depends somewhat on geographic location. In Texas waters, about 90% of the spawning occurs in February and March, but some spawning activity occurs as late as June and July. The gonad-somatic index (GSI, used as an indication of reproductive readiness) of black drum from Alazan Bay, Texas, increased in late winter and early spring, and included a secondary rise during the fall. In deeper gulf waters off Texas, spawning occurs during November through April. EGGS AND FECUNDITY: The eggs of black drum are 0.8 to 1 mm in diamter and pelagic; they contain 2 to 6 oil globules in the early stages (average is 2 to 3), which coalesce into a single globule prior to hatching. Black drum eggs are reported to hatch in less than 24 hr at 20 deg C. Little is known about the fecundity of black drum, but a ripe female 1.1 m in total length (TL) contained an estimated 6,000,000 eggs. LARVAE: Black drum larvae are 1.9-2.4 mm in total length (TL) at hatching. When the larvae are about 2.8 mm long, the yolk sac is almost completely absorbed. The general adult shape is acheived when they reach a length of Life History - 1 (DRAFT) - Life History Species drum, black Species Id M010025 Date 27 AUG 96 15 mm TL. After hatching larvae are transported by tidal currents into estuaries. In Texas, larval and post-larval black drum were first caught in February and March, and were most frequently taken in or near the main channel of Corpus Christi Pass. Collection of larval black drum continued through March and April. Postlarval black drum are also taken in March and April in Alabama waters, near Dauphin Island. JUVENILES: Juvenile black drum prefer shallow, nutrient rich and relatively muddy waters (i.e., tidal creeks and channels) along the Gulf of Mexico. While juveniles utilize the estuarine environment, they can tolerate a wide range of salinities and water temperatures. Young black drum have even been taken in freshwater. Most black drum stay in the shallow bay areas until they reach sexual maturity. ADULTS: Adult black drum are predominently an estuarine species, and are common in shallow estuaries throughout the Gulf of Mexico. Black drum tagged near Baffin Bay (Laguna Madre), Texas, showed little intra-bay movement, and 60% were captured less than 5 mi from where they were marked. Little movement was also reported in Florida fish. Little movement was found in young black drum (3 years or younger) along the Texas coast from several bay systems to the gulf. Larger (older) fish were taken in gulf waters off Texas at depths of 5-27 m from December to June. Adult black drum were also caught in the deeper waters off Texas at depths of up to 37 m, but the majority of fish were caught in the 20-27 m zone. A quasi-permanent movement of black drum from the bay to the gulf may take place at age 4 or older, making the bay systems the primary area of recruitment to the spawning stocks of older black drum. GROWTH CHARACTERISTICS: Information on growth of black drum in the Gulf of Mexico is relatively scarce. Length-frequency analysis was used to determine that drum in Texas waters were about 250 mm TL at the end of the first year of life, and about 370 mm long by the end of their second year. It was reported that the large size and heavy calcification of drum scales made age determination difficult and unreliable after the fourth or fifth year of life, when drum were about 600 mm long. It was concluded from length-frequency analysis and tag return data that black drum in Texas waters attained a standard length of 160 mm at the end of their first year, 310 mm at the end of the second, and 415 mm by the end of the third year of life. Older drum grew about 50 mm SL/year. On the basis of 14 taken from gulf waters off Texas, the following length-weight relation was calculated: log W = -4.98107 + 3.16465 log L (W = weight in grams and L = standard length in millimeters). Black drum larvae feed largely on zooplankton. Food of the young consists chiefly of marine annelids, soft crustaceans, and small fishes. Young black drum were found to eat small fish (36%) and polychaetes (32%). It was also reported that young fed mainly on small invertebrates such as copepods, anneilds (including polychaetes), and amphipods. In Texas estuaries, the dominent food of black drum longer than 20 cm was the mollusk Mulinia transversa corbuloides, an inhabitant of muddy waters. This mollusk made up about 33% of the diet of black drum 21-50 cm long; larger drum ate mostly mollusks (74%) and crabs (16%). It was reported that larger fish fed on mollusks and shrimp, while another study reported that black drum in Aransas Bay, Texas, fed heavily on shrimp, mollusks, and Life History - 2 (DRAFT) - Life History Species drum, black Species Id M010025 Date 27 AUG 96 aquatic vegetation. Moderate to large captive drum reportedly were capable of consuming more than two oysters of commercial size per kilogram of body weight each day. Black drum are known to destroy large numbers of oysters on seed reefs and oyster lease areas in Louisiana and Mississippi. FEEDING BEHAVIOR: Black drum are primarily bottom feeders, although they sometimes feed on the bottom in a vertical position so that their tails stick out of the water. They are well-adapted for bottom feeding; their mouth and sensitive chin barbels aid in searching for food, and their strong pharyngeal teeth crush the shells of mollusks and crabs. COMPETITORS: Interactions between black drum and other species have not been extensively studied. Because of its strong pharyngeal teeth, this species probably has few competitors for mollusks (e.g., oysters); however, they may compete with the red drum and other bottom feeders for other benthic resources *21*. LIFE HISTORY CODES - Breeding/Spawning Season: January Breeding/Spawning Season: February Breeding/Spawning Season: March Breeding Spawning Season: April Breeding/Spawning Season: May Breeding/Spawning Season: June Breeding/Spawning Season: July Breeding/Spawning Season: November Breeding/Spawning Season: December Spawning Site: Standing Water Average Number of Offspring/Reproductive Effort: Grea REFERENCES FOR LIFE HISTORY- 21 Life History - 3
                           (DRAFT) - Management Practices
                                 Species drum, black
                                 Species Id M010025
                                   Date 27 AUG 96



MANAGEMENT PRACTICES

COMMENTS ON MANAGEMENT PRACTICES - Black drum are harvested with a variety of gear. The sport fishery is more important than the commercial fishery, and in Alabama, most drum in the commercial fishery are caught incidentally with other species *21*. Management Practices - 1
                                   (DRAFT) - References
                                   Species drum, black
                                    Species Id M010025
                                      Date 27 AUG 96



     

References

21* Sutter, F.C., R.S. Waller, and T.D. McIlwain. 1986. Species profiles: life histories and environmental requirements of coastal fishes and invertebrates (Gulf of Mexico)--black drum. U.S. Fish Wildl. Serv. Biol. Rep. 82(11.51). U.S. Army Corps of Engineers, TR EL-82-4. 10 pp. References - 1