Reproductive traits and spawning activity of striped eel catfish (Plotosidae) in Kolono Bay, Indonesia

Abstract. Asriyana A, Halili H. 2021. Reproductive traits and spawning activity of striped eel catfish (Plotosidae) in Kolono Bay, Indonesia. Biodiversitas 22: 3020-3028. Reproduction is a natural process for a species to ensure its sustainability in nature. This study aimed to investigate the reproductive traits and spawning activity of the striped eel catfish in Kolono Bay, South Konawe District, Southeast Sulawesi, Indonesia. A total of 965 individuals were collected monthly from June 2020 to May 2021 by using bottom experimental gillnets. Spent/spawning stages of the male and female fish were found during the East season (June-August). The proportions of the spent/spawning stages of male and female fish were 60% and 55.56% and the values of the gonadal somatic index were 1.19 ± 0.53 and 2.19 ± 3.47, respectively during the East season, indicate occurring the peak spawning in this season. Females matured gonads more rapidly at 198.3 mm compared to males at 224.5 mm. Female fecundity was 1,730 ± 390 eggs, with an egg diameter of about 0.11-1.35 mm. Striped eel catfish is a total spawner fish that has one mode of egg distribution pattern. During the East season, it needs protection for spawning. The findings will help in designing effective management and developmental strategies to conserve the striped eel catfish population in the future.

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BIOLOGI REPRODUKSI IKAN BETOK (Anabas testudineus) DI PAPARAN BANJIRAN LUBUK LAMPAM,KABUPATEN OGAN KOMERING ILIR

BAWAL Widya Riset Perikanan Tangkap ◽

10.15578/bawal.6.3.2014.137-146 ◽

2015 ◽

Vol 6 (3) ◽

pp. 137

Author(s):

Eko Prianto ◽

Mohammad Mukhlis Kamal ◽

Ismudi Muchsin ◽

Endi Setiadi Kartamihardja

Keyword(s):

Sex Ratio ◽

Anabas Testudineus ◽

Commercial Fish ◽

Male And Female ◽

Climbing Perch ◽

Male Sex ◽

First Maturity ◽

Egg Diameter ◽

Floodplain Area ◽

Somatic Index

Ikan betok (Anabas testudineus) adalah salah satu jenis ikan ekonomis penting yang dihasilkan dari perairan paparan banjiran. Penelitian yang bertujuan untuk mengkaji beberapa aspek biologi reproduksi ikan betok di paparan banjiran Lubuk Lampam, Kabupaten Ogan Komering Ilir dilakukan pada bulan Nopember 2012-Oktober 2013. Sampel ikan ditangkap setiap bulanmenggunakan alat tangkap jaring dan bengkirai.Analisis data meliputi sebaran frekuensi ukuran panjang, nisbah kelamin, tingkat kematangan gonad, indeks kematangan gonad, ukuran pertamakali matang gonad, potensi reproduksi dan pola reproduksi. Jumlah sampel ikan betok yang diperoleh sebanyak 540 ekor, terdiri dari 187 ekor ikan jantan dan 353 ekor ikan betina, dengan kisaran panjang ikan betina antara 27-224 mm dan ikan jantan antara 48-243 mm. Rasio kelamin ikan jantan dan betina adalah 0,53 : 1. Tingkat kematangan gonad (TKG) ikan jantan dan betina yang paling banyak ditemui adalah TKG I dengan frekuensi tertinggi pada ukuran 116-132 mm dan 114-129 mmmasing-masing berjumlah 34 dan 33 ekor. Perkembangan tingkat kematangan gonad ikan betok dipengaruhi oleh perubahan tinggimuka air secara musiman. Indek kematangan gonad ikan jantan pada TKGIV berkisar 1,3-15,0%dan ikan betina berkisar antara 1,2 17,1%. Ukuran pertama kali matang gonad ikan betina adalah pada panjang total 160 mm dan ikan jantan pada panjang total 177 mm. Fekunditas ikan betok berkisar antara 224–182.736 butir dengan diameter telur berkisar antara 0,465-1,026 mmdengan pola pemijahan secara sebagian. Climbing perch, Anabas testudineus is a dominant commercial fish inhabit floodplain area of Lubuk Lampam, Ogan Komering Ilir Regency. A study aimed to investigate some aspects of the reproductive biology of climbing perch has been conducted at floodplain of Lubuk Lampam, Ogan Komering Ilir regency from November 2012 to October 2013. Fish sampling was conducted every month using nets and bamboo trap. The data analysis includes lenght frequency distribution, sex ratio, the gonado maturity, gonado somatic index, the size at first maturity, fecundity and reproductive patterns. Climbing perch sample amounted of 540 specimen compose of 187 males and 353 females, with the lenght frequency between 27-224 mm (female) and 48-243 mm (male). Sex ratio of the male and female of the climbing perch was 0,53 : 1. The gonado maturity of male and female are mostly at the first level with the highest frequency between 116-132 mm and 114-129 mm, equivalent to 34 and 33 specimen, respectively. The development of gonado maturity of climbing perch was influenced by seasonally of water level fluctuation. Gonado somatic index of maturity of male and female range 1.3-15.0% and 1.2 -17.1%, respectively. The size at the first maturity of the female was 160 mm lenght and of the male was 177 mm lenght. The fecundity ranges 224 to182,736 eggs with the egg diameter ranges 0.465-1.026 mm and the climbing perch was classified into partially spawner.

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Comparative Study of Reproductive Traits in Gangetic Hairfin Anchovy, Setipinna phasa (Hamilton, 1822) from Estuarine and Freshwater Ecosystems

Turkish Journal of Fisheries and Aquatic Sciences ◽

10.4194/1303-2712-v21_04_03 ◽

2021 ◽

Vol 21 (04) ◽

pp. 179-189

Author(s):

Brijesh Kumar Chaubey ◽

Farah Bano ◽

Mohammad Serajuddin

Keyword(s):

Reproductive Traits ◽

Freshwater Ecosystems ◽

Hooghly Estuary ◽

River Ganga ◽

Males And Females ◽

Positive Correlations ◽

Egg Diameter ◽

First Time ◽

Management And Conservation ◽

Somatic Index

The Gangetic hairfin anchovy, Setipinna phasa (Hamilton, 1822) were collected from river Ganga (Kanpur) and Hooghly estuary (Kolkata) to study the comparative reproductive traits (sex ratio, spawning season, gonado-somatic index, fecundity and egg diameter). Female outnumbered the male in the population of river Ganga but it was non-significant in the population of the estuary. Five maturity stages were identified in males and females of the fish of both ecosystems. Occurrence of multimodal (immature, maturing and mature) and uni-modal (matured) type of ova in the ovary of the fish of Hooghly estuary and river Ganga respectively and the values of gonado-somatic index confirmed the double and single spawning in a year in the fish in estuary and river respectively. The absolute fecundity was found to be higher in the fish of river Ganga compared to that of the estuary (P < 0.05). Linear and positive correlations between fecundity and the total length, body weight, ovary length and ovary weight were noted in the fish of both ecosystems (R2 > 0.90). The present study provides the comparative account of the reproductive and spawning strategies of S. phasa for the first time in favour of the proper management and conservation of the fish.

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BIOCHEMICAL STUDIES ON SOCKEYE SALMON DURING SPAWNING MIGRATION: IV. THE NON-PROTEIN NITROGENOUS CONSTITUENTS OF THE MUSCLE

Canadian Journal of Biochemistry and Physiology ◽

10.1139/o58-089 ◽

1958 ◽

Vol 36 (8) ◽

pp. 833-838 ◽

Cited By ~ 17

Author(s):

J. D. Wood

Keyword(s):

Sockeye Salmon ◽

The Other ◽

Spawning Migration ◽

Female Fish ◽

Male And Female ◽

Low Level ◽

Early Stages ◽

Biochemical Studies

The non-protein nitrogenous constituents of muscle of migrating sockeye salmon were investigated. These constituents were found to be the same in both male and female fish and were present in approximately the same amounts in both sexes. The histidine content of the muscle in all fish decreased to one fifth of the original value during the early stages of the migratory journey and remained at the low level thereafter. Some of the other constituents changed to a smaller extent, usually increasing in the later stages of the migration. This was especially noticeable in female fish. However, the increase in the concentration of these constituents in the muscle was due to a decrease in the amount of muscle in the fish rather than to an increase in the amounts of the compounds themselves.

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Selective depletion of dopamine in the goldfish pituitary caused by domperidone

Canadian Journal of Physiology and Pharmacology ◽

10.1139/y91-116 ◽

1991 ◽

Vol 69 (6) ◽

pp. 776-781 ◽

Cited By ~ 17

Author(s):

B. D. Sloley ◽

V. L. Trudeau ◽

J. G. Dulka ◽

R. E. Peter

Keyword(s):

Sch 23390 ◽

Female Fish ◽

Antagonist Activity ◽

Male And Female ◽

Selective Depletion ◽

Serum Gonadotropin ◽

Mouse Pituitary ◽

Dose Dependent

The effects of the dopamine type-2 receptor (D-2) antagonist domperidone on pituitary and brain amine concentrations and serum gonadotropin levels in the goldfish were investigated. Domperidone caused a long-lasting, dose-dependent depletion of dopamine in the goldfish pituitary. Pituitary concentrations of 5-hydroxytryptamine (5HT) were unaffected by domperidone treatment. Concentrations of noradenaline, dopamine, and 5HT in the hypothalamus and telencephalon were also unaffected by domperidone treatment. In contrast to the goldfish, dopamine levels in both mouse pituitary and hypothalamus were unaffected by domperidone treatment. The depletion of dopamine was observed in both sexually regressed and recrudescent male and female fish, but elevation of serum gonadotropin levels in response to domperidone treatment occurred only in sexually recrudescent fish. Treatment of sexually recrudescent fish with the D-2 antagonists pimozide, (−)-sulpiride and eticlopride and the dopamine type-1 (D-1) antagonists SKF 83566 and SCH 23390 failed to elicit a depletion of pituitary dopamine or elevation of serum gonadotropin. Treatment of sexually recrudescent fish with domperidone, α-methyl-p-tyrosine or carbidopa elicited comparable depletions of pituitary dopamine and elevations of serum gonadotropin. The results suggest that in addition to D-2 receptor antagonist activity, domperidone has some other neuropharmacological action on dopaminergic neurones in the goldfish pituitary.Key words: domperidone, dopamine, noradrenaline, 5-hydroxytryptamine, pituitary, hypothalamus, telencephalon, gonadotropin, goldfish.

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BEHAVIORAL IMPLICATIONS OF ADAPTION INNOVATION: I. MANAGERIAL EFFECTIVENESS AS A FUNCTION OF SEX DIFFERENCES IN ADAPTION-INNOVATION

Social Behavior and Personality An International Journal ◽

10.2224/sbp.1989.17.1.51 ◽

1989 ◽

Vol 17 (1) ◽

pp. 51-55 ◽

Cited By ~ 6

Author(s):

Nicholas F. Skinner

Keyword(s):

Sex Differences ◽

Cognitive Style ◽

Management Style ◽

Effective Management ◽

Managerial Effectiveness ◽

Male And Female ◽

Female Managers ◽

The Relationship

Three studies investigated the relationship between effective management and the positions of male and female managers on Kirton's cognitive style dimension of adaption (doing things better) vs. innovation (doing things differently). Both sexes equated innovation with effective male management and adaption with effective female management. The role in management style of characteristic sex-specific differences in adaption-innovation is discussed.

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Fertility Variation and its Impact on Effective Population Size in Seed Stands of Tamarindus indica and Azadirachta indica

Silvae Genetica ◽

10.1515/sg-2015-0008 ◽

2015 ◽

Vol 64 (1-6) ◽

pp. 91-99 ◽

Cited By ~ 1

Author(s):

R. Kamalakannan ◽

M. Varghese ◽

J.-M. Park ◽

S.-H. Kwon ◽

J.-H. Song ◽

...

Keyword(s):

Azadirachta Indica ◽

Male Fertility ◽

Reproductive Traits ◽

Fruit Production ◽

Female Fertility ◽

Tamarindus Indica ◽

Individual Tree ◽

Male And Female ◽

Fertility Variation ◽

Status Number

Abstract Growth and reproductive traits were assessed in seed stands of two native Indian tree species Tamarindus indica and Azadirachta indica. Positive correlation between growth (height and GBH) and reproductive traits (male and female contribution) were found in both species. Fertility was estimated from the flower and fruit production of individuals. Based on the fertility variation among individuals, parental balance, femaleness index and status number (Ns) were determined. The option of equal seed collection among individuals was also considered for estimating Ns. The percentage of fertile trees was higher in the high flowering year in both species. The best male contributing individuals also showed high female contribution (fruit production). The parental contribution in seed stands showed high deviation from expectation; 20% individuals contributed about 70% of male and female gametes in both species. Femaleness index showed that female and male contribution of individual tree was more balanced in the good flowering year, compared to the poor year. Coefficient of variation in male and female fertility was higher in the low flowering year resulting in high fertility variation among individuals and low status number. In T. indica, the female contribution was less variable compared to that of male fertility whereas in A. indica the female fertility variation was higher than that of male fertility. The relative status number (Nr = Ns/N) of the stands was lower for male and female fertility compared to the combined (male and female) fertility of individual trees.

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