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MORPHOLOGICAL FEATURES OF FAMILY APOGONIDAE, SCIAENIDAE and SPARIDAE SUZETTE B. BARCOMA.

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Presentation on theme: "MORPHOLOGICAL FEATURES OF FAMILY APOGONIDAE, SCIAENIDAE and SPARIDAE SUZETTE B. BARCOMA."— Presentation transcript:

1 MORPHOLOGICAL FEATURES OF FAMILY APOGONIDAE, SCIAENIDAE and SPARIDAE SUZETTE B. BARCOMA

2 MORPHOLOGICAL FEATURES OF FAMILY APOGONIDAE

3 Family:Apogonidae (Cardinalfishes) Order:Perciformes (perch-likes) Class: Actinopterygii (ray-finned fishes) Subfamily:Apogoninae Biology: Inhabits coastal reefs, in sandy or weedy areas. Juveniles often occur with sea anemones Other Info: Cardinal Fishes includes a wide variety of larval types in both in appearance and development consist of two subfamilies, containing a total of 122 species and 22 genera (Nelson 1994). Apogonids are small (most species, usually nocturnal predatory residents of reefs and shallow coastal waters in all warm seas. Apogonidae

4 Family: Apogonidae Sampling Location: Andaman Sea Sampling Gear: Bongo net Stage: Post Flexion stage Measurements: Body Length6.97 mm Head Length2.37mm ED.72mm SnL.79mm PAL4.0mm BD2.25mm Counts:D VI+ I,9 A: II,8 P1: 12P2: I,5 C: 9+8 Myomeres: 24

5 Larval sample caught from Andaman Sea last 23/02/05

6 Apogonidae illustration. Pigmentation: External stellate melanophore dorsally on the head External stellate melanophore dorsally on the head pigmentation along the dorsal part of the body pigmentation along the dorsal part of the body Internal stellate melanophore on the ventral gut and on the anterior surface of the gut Internal stellate melanophore on the ventral gut and on the anterior surface of the gut Dense pigment patch on ventro lateral surface of caudal peduncle Dense pigment patch on ventro lateral surface of caudal peduncle

7 Morphological Features Two dorsal fins well separated composed of spines and rays Two dorsal fins well separated composed of spines and rays Large eye and large mouth Large eye and large mouth Body shape is laterally compressed and deep bodied Body shape is laterally compressed and deep bodied Gut is deeply coiled and extends to the midbody Gut is deeply coiled and extends to the midbody Head shape is large deep, laterally compressed with a short snout length Head shape is large deep, laterally compressed with a short snout length Large mouth reaches to about mideye and nearly horizontal to very oblique Large mouth reaches to about mideye and nearly horizontal to very oblique 9 to 10 number of myomers counts present in the posteriorside of the anal fin 9 to 10 number of myomers counts present in the posteriorside of the anal fin No branchiostegal membrane pigment No branchiostegal membrane pigment

8 Similar families of Apogonidae: Similar families of Apogonidae:  Opistognathid species * heavily pigmented branchiostegal membranes * heavily pigmented branchiostegal membranes * no of myomeres is * no of myomeres is  Carangids species because of longitudinal melanophore series *more rays by midflexion for the dorsal and fin ray counts *more rays by midflexion for the dorsal and fin ray counts * develop supraoccipital crest early in the preflex stage in most species * develop supraoccipital crest early in the preflex stage in most species * develop early preopercular spines in the preflex stage * develop early preopercular spines in the preflex stage Apogon species can easily be distiguised from one another primarily by pigment pattern, eye diameter, caudal peduncle depth Apogon species can easily be distiguised from one another primarily by pigment pattern, eye diameter, caudal peduncle depth Some species of Family Apogonidae are utilized in aquarium trade. Some species of Family Apogonidae are utilized in aquarium trade.

9  Additional similar familes:  ambassids,berycids, carangids, serranids lactariids, kyposids, lethrinids, leptobramids etc, Prominent, anteriorly –located gas bladder, (can be observe during the day only)a typical myomere count of 24 and 2 dorsal fins. Prominent, anteriorly –located gas bladder, (can be observe during the day only)a typical myomere count of 24 and 2 dorsal fins. can’t be confused with gobiid interms of fins dev’t generally have a longer coiled gut can’t be confused with gobiid interms of fins dev’t generally have a longer coiled gut  Acropomatids,

10 Family: (Drums or croakers) Order:Perciformes (perch-likes) Class: Actinopterygii (ray-finned fishes) Biology: Found in coastal waters. Feeds on invertebrates and small fishes Marketed fresh, dried salted. Climate Zone: tropical Family:Sciaenidae (Drums or croakers) Order:Perciformes (perch-likes) Class: Actinopterygii (ray-finned fishes) Biology: Found in coastal waters. Feeds on invertebrates and small fishes Marketed fresh, dried salted. Climate Zone: tropicalSciaenidae

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12 Stage: Flexion stage Measurements:Body Length5.4 mm Head Length1.8 mm ED 0.4 mm SnL 0.6 mm PAL 3.0 mm BD 1.6 mm PDL 2.0 mm Counts:D: __, 15 A: (II, 12) P1: __ P2: ___ C: 9,8 Myomeres: Family: Sciaenidae Sampling Location: Andaman Sea Sampling Gear: Bongo net Stage: Flexion stage Genus Otolithini ptertolithus

13 PIGMENTATION: PIGMENTATION: Highly variable, in large nos. of species Highly variable, in large nos. of species Initially light to moderate but increase markedly to the juvenile stage gradually Initially light to moderate but increase markedly to the juvenile stage gradually Internal pigment on hindgut Internal pigment on hindgut Pigment anterior to cleitral symphysis Pigment anterior to cleitral symphysis

14 MORPHOLOGICAL FEATURES: MORPHOLOGICAL FEATURES: Robust body Robust body Triangular gut, weak spination Triangular gut, weak spination Distinct characteristics along dorsal fins and short anal fins Distinct characteristics along dorsal fins and short anal fins Absence of barbels at tip of lower jaw Absence of barbels at tip of lower jaw Shape of caudal fin is round Shape of caudal fin is round

15 SIMILAR FAMILIES: SIMILAR FAMILIES: Stromateidae, Gerreids, Haemulids and Sparids.etc Stromateidae, Gerreids, Haemulids and Sparids.etc Gerridae- distinct melanophores on dorsal midline posterior to 2 nd dorsal fins, slimmer bodied,fin rays counts differ and usually exhibit greater space b/w succesive fin rays Gerridae- distinct melanophores on dorsal midline posterior to 2 nd dorsal fins, slimmer bodied,fin rays counts differ and usually exhibit greater space b/w succesive fin rays Haemulidae bases of 2 nd dorsal and anal fins are equal, slim bodied, w/ less deeening on the pectoral region, head spines is very weak, usual weak to preopercle,pigment prominent on posterior midline Haemulidae bases of 2 nd dorsal and anal fins are equal, slim bodied, w/ less deeening on the pectoral region, head spines is very weak, usual weak to preopercle,pigment prominent on posterior midline Stromateidae- early stages high myomere counts less than 30, no gap b/w anus n anal fin origin and nos. of anal and 2 nd dorsal about equal Stromateidae- early stages high myomere counts less than 30, no gap b/w anus n anal fin origin and nos. of anal and 2 nd dorsal about equal

16 Family:Sparidae (Porgies) Order:Perciformes (perch-likes) Class: Actinopterygii (ray-finned fishes) Biology: Found over rock, rubble, or sand bottoms (young frequently found on seagrass beds and the continental shelf down to about 250 m depth, often above 150 m). Feeds on crustaceans, fishes, and mollusks. Marketed fresh and frozen. Climate Zone: subtropical

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18 Stage:Pre flexion Measurements:Body Length3.45 mm Head Length1.65 mm ED 0.33 mm SnL 0.46 mm PAL 1.81 mm BD 1.25 mm PDL 1.78 mm Counts:D: __, 13 A: 14 P1: can’t be countedP2: cant be C: 9, 8Myomeres: 24 Family: Sparidae Sampling Location: Gutob Bay, Palawan Sampling Gear: Rectangular net Stage: Pre-Flexion stage

19 PIGMENTATION: PIGMENTATION: Melanophore along the base of caudal fin Melanophore along the base of caudal fin external melanophore series along pigmented ventral finbase external melanophore series along pigmented ventral finbase Internal pigment on hindgut and stellate pigment over anterior surface of gut Internal pigment on hindgut and stellate pigment over anterior surface of gut Internal melanophore on the midbrain Internal melanophore on the midbrain Includes 1 to 2 spots anterior to the anus Includes 1 to 2 spots anterior to the anus

20 Morphological Features: Morphological Features: Sparids are compressed Sparids are compressed Position of mouth is subterminal Position of mouth is subterminal Body shape is moderately deep bodied Body shape is moderately deep bodied Head is Large Head is Large A supra occipital crest A supra occipital crest Caudal fin formation is truncate Caudal fin formation is truncate Forked Caudal fin Forked Caudal fin Continous dorsal fin Continous dorsal fin Coiled gut Coiled gut

21 mouth small barely reaching anterior edge of the eye mouth small barely reaching anterior edge of the eye Body depth to anus increases Body depth to anus increases Preopercular weak spine Preopercular weak spine Weak head spination Weak head spination Later larva have series of unevenly spaced melanophores along venter beginning over gut &extending on notochord tip Later larva have series of unevenly spaced melanophores along venter beginning over gut &extending on notochord tip Pre anus length is about 45 to 50% of the BL. Pre anus length is about 45 to 50% of the BL. * about equal no of finrays in D2 * about equal no of finrays in D2 & A fins

22 Similar families: Similar families:

23 Sparids are moderately large, deep compressed, carnivorous fishes Sparids are moderately large, deep compressed, carnivorous fishes Support major commercial and recreational fisheries. Support major commercial and recreational fisheries.

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