Author: tmg

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The Sea of Marmara is home to more monk seals than expected

Cem Orkun Kıraç and Nesimi Ozan Veryeri SAD-AFAG, Ankara, Turkey afag@sad.org.tr – www.sadafag.org

The existence of the Mediterranean monk seal in the Sea of Marmara was first mentioned by Mursaloğlu (1964) and then confirmed by Berkes et al (1979), Savaş and Kıraç (1992), Güçlüsoy et al. (2004), Kıraç and Güçlüsoy (2008), İnanmaz et al. (2014), Kıraç and Veryeri (2016). However, the exact status of the Mediterranean monk seal population in the Sea of Marmara has been a vague issue. The above studies could not provide detailed analysis on the status of the species, including its distribution and population estimates, as well as the threats in the whole of the Sea of Marmara.

The Sea of Marmara and the indicative locations: 1- Çanakkale, 2- Şahmelek (Aksaz Village), 3- Karabiga, 4- Marmara Islands Archipelagos, 5- Marmara Island, 6- Kapidağ Peninsula, 7- Mudanya, 8- Armutlu Peninsula, 9- Esenköy, 10- İstanbul, 11- Büyükçekmece and 12- Tekirdağ.

Continue reading “The Sea of Marmara is home to more monk seals than expected”

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Occurrence and impact of interactions between small-scale fisheries and predators, with focus on Mediterranean monk seals (Monachus monachus Hermann 1779), around Lipsi Island complex, Aegean Sea, Greece

Recent Publications

Non-open access journalsNoelia Ríos, Matija Drakulic, Iosu Paradinasb, Anastasia Milliou, Ruth Cox. 2017. Occurrence and impact of interactions between small-scale fisheries and predators, with focus on Mediterranean monk seals (Monachus monachus Hermann 1779), around Lipsi Island complex, Aegean Sea, Greece. Fisheries Research 187: 1-10. https://dx.doi.org/10.1016/j.fishres.2016.10.013

Abstract
Antagonistic interaction between Mediterranean marine mammals, including the endangered monk seal (Monachus monachus), and small-scale fisheries is a growing problem in the Aegean Sea. Effective management measures are needed to ensure both the survival of the monk seal population, and its coexistence with the small-scale fisheries. In this study, data from 371 fishing journeys by 8 different boats was collected between March and November 2014. Evidence of depredation by monk seals was recorded in 19.1% of fishing journeys, by cetaceans in 5%, and by other predators in 16.5%. Analysis of landings data showed that gear and depth were the variables most likely to influence the occurrence of depredation. There was a significant decrease in the catch per unit effort (CPUE) of four of the nine targeted fish species when depredation by monk seals occurred. The total cost of monk seal depredation was estimated to be 21.33% of the mean annual income of fishermen in the Aegean Sea. We discuss how the implementation of marine protected areas and the use of specific fishing gear could reduce the frequency of interactions, and thus mitigate the loss experienced by the fisheries as well as contribute to the conservation of an endangered species.

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Amendment of the regulation on disturbance of monk seals in sea caves in Turkey

Cem O. Kıraç and N. Ozan Veryeri, SAD-AFAG
Tourist boats in front of monk seal caves…
Tourist boats in front of monk seal caves…

The existing regulation on disturbance of Mediterranean monk seals in caves along the Turkish coast was amended exactly as proposed by SAD-AFAG in January this year and published by the DG Fisheries & Aqua Products in the Official Gazette on 13 August 2016. The amended regulation reads as follows: “It is forbidden to use any light source inside, dive by any means into, enter by swimming or any other way into, wait or anchor in front of either underwater or surface entrances to caves used by Mediterranean monk seals”. The amended version of the related article was published in both, the Professional Aqua Product Fishery Circular No 2016/35 and the Recreational Aqua Products Fishery Circular No 2016/36. Continue reading “Amendment of the regulation on disturbance of monk seals in sea caves in Turkey”

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Recent sightings of the Mediterranean monk seal Monachus monachus and evaluation of anthropogenic activities with recommended conservation implications in Antalya Bay, Turkey

by Aylin Akkaya Bas*, Nicola Piludu, João Lagoa and Elizabeth Atchoi, Marine Mammals Research Association, Antalya, Turkey**

Introduction
Mediterranean monk seals (Hermann, 1779) were once widely and continuously distributed in the Mediterranean Sea, Black Sea and North Atlantic waters (Aguilar 1999). The species is considered to be one of the world’s most endangered pinnipeds, with the global population estimated to be around 500 individuals (Karamanlidis & Dendrinos 2015), only 50-100 of which are left in Turkey (Güçlüsoy et al. 2004; Öztürk et al. 1991). Antalya Bay is subjected to high marine traffic year-round, and especially during summer months, when tourism activities peak. We report the most recent sightings of Mediterranean monk seals in Antalya Bay and investigate the impact of boat traffic on the species. Considering that the population in the Turkish Mediterranean is estimated at around 40 individuals (Güçlüsoy et al., 2004), the recent sightings in Antalya are of vital importance for the knowledge of the overall Turkish population, and provide great insight for conservation plans and consequently for the species’ survival in the region. Continue reading “Recent sightings of the Mediterranean monk seal Monachus monachus and evaluation of anthropogenic activities with recommended conservation implications in Antalya Bay, Turkey”

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The stomach content of a Mediterranean Monk Seal (Monachus monachus): finding of Green Turtle (Chelonia mydas) remains

Recent Publications

Non-open access journalsTonay, A.M., E. Danyer, A. Dede, B. Öztürk and A.A. Öztürk. 2016. The stomach content of a Mediterranean Monk Seal (Monachus monachus): finding of Green Turtle (Chelonia mydas) remains. Zoology in the Middle East. http://dx.doi.org/10.1080/09397140.2016.1202947

Abstract
The stomach contents of an adult Mediterranean Monk Seal (Monachus monachus) found stranded on the Turkish eastern Mediterranean coast near Antalya in May 2013 were analysed. In total, 69 individual food items were counted and nine taxa were identified to species or family level. Of the identified taxa, Sparidae was the most highly represented family of prey fish, and one cephalopod species, Octopus vulgaris, was found. Ariosoma balearicum and Argyrosomus regius were encountered for the first time in the diet of a Monk Seal in the Mediterranean. Several body parts (three heads, six forelimbs, neck bones and fractured upper forelimb bones) of Green Turtles (Chelonia mydas) were also identified, which is the first record of this species in the Monk Seal’s diet.

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Shaping species conservation strategies using mtDNA analysis: The case of the elusive Mediterranean monk seal (Monachus monachus)

Recent Publications

Non-open access journalsKaramanlidis, A.A., S. Gaughran, A. Aguilar, P. Dendrinos, D. Huber, R. Pires, J. Schultz, T. Skrbinšek and G. Amato. 2016. Shaping species conservation strategies using mtDNA analysis: The case of the elusive Mediterranean monk seal (Monachus monachus). Biological Conservation 193: 71–79. doi: 10.1016/j.biocon.2015.11.014

Abstract
Halting biodiversity loss is one of the major conservation challenges of our time and science-based conservation actions are required to safeguard the survival of endangered species. However the establishment of effective conservation strategies may be hampered by inherent difficulties of studying elusive animals. We used analysis of control region sequences to obtain baseline information on the genetic diversity and population structure and history of the elusive and critically endangered Mediterranean monk seal that will help define an effective conservation strategy for the species. We analyzed 165 samples collected throughout the entire extant range of the species and identified 5 haplotypes. Based on levels of genetic diversity (haplotypic diversity: 0.03; variable sites: 0.6%) the Mediterranean monk seal appears to be one of the most genetically depauperate mammals on Earth. We identified three genetically distinct monk seal subpopulations: one in the north Atlantic [Cabo Blanco vs. Aegean Sea (FST = 0.733; P = 0.000); Cabo Blanco vs. Ionian Sea (FST = 0.925; P = 0.000)] and two in the Mediterranean, one in the Ionian and another one in the Aegean Sea (Ionian vs. Aegean Sea FST = 0.577; P = 0.000). Results indicate a recent divergence and short evolutionary history of the extant Mediterranean monk seal subpopulations. Based on the results we recommend continuation of the monitoring efforts for the species and systematic collection of genetic samples and storage in dedicated sample banks. On a management level we argue that, based on genetic evidence, it is justified to manage the Atlantic and Mediterranean monk seal subpopulations as two separate management units. In Greece, the existence of two subpopulations should guide efforts for the establishment of a network of protected areas and identify the monitoring of habitat availability and suitability as an important conservation priority.